{"id":1535,"date":"2026-11-06T09:40:11","date_gmt":"2026-11-06T01:40:11","guid":{"rendered":"https:\/\/chinasensair.com\/?post_type=news&#038;p=1535"},"modified":"2026-11-04T09:56:29","modified_gmt":"2026-11-04T01:56:29","slug":"dust-extraction-pipe-sizing-velocity-diameter-layout","status":"publish","type":"news","link":"https:\/\/chinasensair.com\/ar\/%d8%a7%d9%84%d8%a3%d8%ae%d8%a8%d8%a7%d8%b1\/dust-extraction-pipe-sizing-velocity-diameter-layout\/","title":{"rendered":"Dust Extraction Pipe Sizing: Velocity, Diameter, Layout"},"content":{"rendered":"<p>\u062d\u062f\u062f \u0645\u0642\u0627\u0633 \u0623\u0646\u0628\u0648\u0628 \u0634\u0641\u0637 \u0627\u0644\u063a\u0628\u0627\u0631 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0648\u0633\u0631\u0639\u0629 \u0627\u0644\u0646\u0642\u0644\u060c \u0648\u0644\u064a\u0633 \u0642\u062f\u0631\u0629 \u0627\u0644\u0645\u0631\u0648\u062d\u0629. \u0642\u0633\u0651\u0645 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0643\u0644 \u0646\u0642\u0637\u0629 \u0633\u062d\u0628 \u0639\u0644\u0649 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u064a \u062a\u0628\u0642\u064a \u0627\u0644\u063a\u0628\u0627\u0631 \u0639\u0627\u0644\u0642\u0627\u064b \u0641\u064a \u0627\u0644\u0647\u0648\u0627\u0621\u060c \u062b\u0645 \u062d\u0648\u0651\u0644 \u062a\u0644\u0643 \u0627\u0644\u0645\u0633\u0627\u062d\u0629 \u0625\u0644\u0649 \u0642\u0637\u0631\u060c \u0648\u0642\u0631\u0651\u0628 \u0644\u0644\u0623\u0633\u0641\u0644 \u0625\u0644\u0649 \u062d\u062c\u0645 \u0642\u064a\u0627\u0633\u064a. \u062d\u062f\u062f \u062d\u062c\u0645 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0628\u062f\u0621\u0627\u064b \u0645\u0646 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0623\u0628\u0639\u062f\u060c \u0645\u0639 \u062a\u0643\u0628\u064a\u0631\u0647 \u0641\u0642\u0637 \u0639\u0646\u062f \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0642\u0627\u0621 \u0627\u0644\u0641\u0631\u0648\u0639.<\/p>\n<h2>\u0644\u0645\u0627\u0630\u0627 \u062a\u062d\u062f\u062f \u0627\u0644\u0633\u0631\u0639\u0629 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u063a\u0628\u0627\u0631 \u0633\u064a\u062a\u0631\u0633\u0628 \u0623\u0645 \u0644\u0627<\/h2>\n<p>\u0633\u0631\u0639\u0629 \u0627\u0644\u0647\u0648\u0627\u0621 \u0641\u064a \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0647\u064a \u062d\u0627\u0635\u0644 \u0642\u0633\u0645\u0629 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0639\u0644\u0649 \u0645\u0633\u0627\u062d\u0629 \u0627\u0644\u0645\u0642\u0637\u0639 \u0627\u0644\u0639\u0631\u0636\u064a \u0644\u0644\u0645\u062c\u0631\u0649\u060c \u0648\u062a\u0644\u0643 \u0647\u064a \u0627\u0644\u0639\u0644\u0627\u0642\u0629 \u0628\u0623\u0643\u0645\u0644\u0647\u0627. \u0641\u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0628\u0645\u0642\u0627\u0633 315 \u0645\u0645 \u0627\u0644\u0630\u064a \u064a\u0646\u0642\u0644 5,600 \u0645\u00b3\/\u0633\u0627\u0639\u0629 \u064a\u062d\u0631\u0643 \u0627\u0644\u0647\u0648\u0627\u0621 \u0628\u0633\u0631\u0639\u0629 \u062a\u0642\u0627\u0631\u0628 20 \u0645\/\u062b\u060c \u0628\u064a\u0646\u0645\u0627 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0646\u0641\u0633\u0647 \u0639\u0646\u062f \u0646\u0642\u0644 1,500 \u0645\u00b3\/\u0633\u0627\u0639\u0629 \u064a\u062d\u0631\u0643\u0647 \u0628\u0633\u0631\u0639\u0629 \u0646\u062d\u0648 5 \u0645\/\u062b\u060c \u0645\u0645\u0627 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0631\u0633\u0628 \u0627\u0644\u063a\u0628\u0627\u0631 \u0641\u064a \u0642\u0627\u0639 \u0627\u0644\u0623\u0646\u0628\u0648\u0628.<\/p>\n<p>Fan power enters the picture only through airflow. A larger fan raises velocity if it actually pushes more air through the same pipe. It cannot rescue a duct that is too wide for the airflow that really flows through it, and that situation is common: the main was sized for every station running, but on most shifts half the blast gates are closed.<\/p>\n<p>\u0645\u0642\u0627\u0631\u0646\u0629\u064b \u0628\u0627\u0644\u0623\u0633\u0644\u0648\u0628 \u0627\u0644\u0645\u062e\u062a\u0635\u0631 \u0627\u0644\u0634\u0627\u0626\u0639 \u0627\u0644\u0645\u062a\u0645\u062b\u0644 \u0641\u064a \u062a\u062d\u062f\u064a\u062f \u0623\u0628\u0639\u0627\u062f \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u062a\u0637\u0627\u0628\u0642 \u0645\u062f\u062e\u0644 \u0627\u0644\u0645\u062c\u0645\u0639\u060c \u0641\u0625\u0646 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0642\u0627\u0626\u0645 \u0639\u0644\u0649 \u0627\u0644\u0633\u0631\u0639\u0629 \u064a\u0646\u062a\u062c \u0639\u0646\u0647 \u0639\u0627\u062f\u0629\u064b \u0641\u0631\u0648\u0639 \u0623\u0635\u063a\u0631 \u0648\u0645\u062c\u0631\u0649 \u0631\u0626\u064a\u0633\u064a \u064a\u062a\u062f\u0631\u062c \u0642\u0637\u0631\u0647 \u0628\u0627\u0644\u0632\u064a\u0627\u062f\u0629 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0645\u0633\u0627\u0631\u0647. \u0648\u0647\u0630\u0627 \u0627\u0644\u0634\u0643\u0644 \u0647\u0648 \u0627\u0644\u0639\u0644\u0627\u0645\u0629 \u0627\u0644\u0645\u0631\u0626\u064a\u0629 \u0644\u0634\u0628\u0643\u0629 \u0635\u064f\u0645\u0645\u062a \u0645\u0646 \u0623\u062c\u0644 \u0627\u0644\u0646\u0642\u0644 \u0627\u0644\u0641\u0639\u0627\u0644 \u0644\u0627 \u0644\u0645\u062c\u0631\u062f \u0627\u0644\u0633\u0647\u0648\u0644\u0629.<\/p>\n<p>Settled dust is not only a performance problem. It reduces the effective pipe area, raises resistance, and in combustible dusts creates fuel inside the duct. NFPA 660, Standard for Combustible Dusts and Particulate Solids (2025 Edition) addresses combustible-dust hazards in dust collection systems, and OSHA provides combustible-dust guidance for U.S. general industry.<\/p>\n<h2>\u0646\u0642\u0627\u0637 \u0627\u0644\u0628\u062f\u0627\u064a\u0629 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u0646\u0642\u0644<\/h2>\n<table border=\"1\">\n<tbody>\n<tr>\n<td><strong><b>\u0646\u0648\u0639 \u0627\u0644\u063a\u0628\u0627\u0631<\/b><\/strong><\/td>\n<td><strong><b>\u0633\u0631\u0639\u0629 \u0627\u0644\u0641\u0631\u0639<\/b><\/strong><\/td>\n<td><strong><b>Main velocity<\/b><\/strong><\/td>\n<td><strong><b>\u0645\u0644\u0627\u062d\u0638\u0627\u062a<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u063a\u0628\u0627\u0631 \u0648\u0646\u0634\u0627\u0631\u0629 \u0627\u0644\u0623\u0639\u0645\u0627\u0644 \u0627\u0644\u062e\u0634\u0628\u064a\u0629<\/td>\n<td>~20 \u0645\/\u062b (\u22484,000 \u0642\u062f\u0645\/\u062f\u0642\u064a\u0642\u0629)<\/td>\n<td>~18 \u0645\/\u062b (\u22483,500 \u0642\u062f\u0645\/\u062f\u0642\u064a\u0642\u0629)<\/td>\n<td>Long chips and shavings need the upper end<\/td>\n<\/tr>\n<tr>\n<td>\u063a\u0628\u0627\u0631 \u0646\u0627\u0639\u0645 \u0648\u062c\u0627\u0641 \u0648\u062e\u0641\u064a\u0641 (\u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0633\u0627\u062d\u064a\u0642)<\/td>\n<td>~18\u201320 m\/s<\/td>\n<td>~18 m\/s<\/td>\n<td>\u062a\u062d\u0642\u0642 \u0645\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0645\u0633\u062d\u0648\u0642 \u0645\u0645\u062a\u0635\u0627\u064b \u0644\u0644\u0631\u0637\u0648\u0628\u0629<\/td>\n<\/tr>\n<tr>\n<td>\u063a\u0628\u0627\u0631 \u0623\u0634\u063a\u0627\u0644 \u0627\u0644\u0645\u0639\u0627\u062f\u0646 \u0648\u0627\u0644\u062c\u0644\u062e<\/td>\n<td>~23 \u0645\/\u062b (\u22484,500 \u0642\u062f\u0645\/\u062f\u0642\u064a\u0642\u0629)<\/td>\n<td>~20 \u0645\/\u062b (\u22484,000 \u0642\u062f\u0645\/\u062f\u0642\u064a\u0642\u0629)<\/td>\n<td>\u062c\u0633\u064a\u0645\u0627\u062a \u0643\u062b\u064a\u0641\u0629\u061b \u062a\u0648\u0642\u0639 \u062a\u0622\u0643\u0644 \u0627\u0644\u0623\u0643\u0648\u0627\u0639<\/td>\n<\/tr>\n<tr>\n<td>Heavy, moist or sticky dust (e.g. cement)<\/td>\n<td>25 \u0645\/\u062b \u0641\u0623\u0643\u062b\u0631 (\u22485,000+ \u0642\u062f\u0645\/\u062f\u0642\u064a\u0642\u0629)<\/td>\n<td>Same or close to branch<\/td>\n<td>Sticky dust can build up even at high velocity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0627\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u0623\u0639\u0644\u0649 \u0644\u064a\u0633\u062a \u0628\u0627\u0644\u0636\u0631\u0648\u0631\u0629 \u0623\u0641\u0636\u0644. \u064a\u0632\u062f\u0627\u062f \u0641\u0642\u062f\u0627\u0646 \u0627\u0644\u0636\u063a\u0637 \u062a\u0642\u0631\u064a\u0628\u0627\u064b \u0645\u0639 \u0645\u0631\u0628\u0639 \u0627\u0644\u0633\u0631\u0639\u0629\u060c \u0644\u0630\u0627 \u0641\u0625\u0646 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0628\u0633\u0631\u0639\u0629 28 \u0645\/\u062b \u062d\u064a\u062b \u062a\u0643\u0641\u064a 20 \u0645\/\u062b \u064a\u0633\u062a\u0647\u0644\u0643 \u0637\u0627\u0642\u0629 \u0625\u0636\u0627\u0641\u064a\u0629 \u0645\u0646 \u0627\u0644\u0645\u0631\u0648\u062d\u0629 \u0637\u0648\u0627\u0644 \u0633\u0627\u0639\u0627\u062a \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0646\u0638\u0627\u0645\u060c \u0648\u064a\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u0636\u0648\u0636\u0627\u0621\u060c \u0648\u064a\u0633\u0631\u0651\u0639 \u0645\u0646 \u062a\u0622\u0643\u0644 \u0627\u0644\u0623\u0643\u0648\u0627\u0639 \u0628\u0641\u0639\u0644 \u0627\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u0643\u0627\u0634\u0637. \u0648\u0627\u0644\u0647\u062f\u0641 \u0647\u0648 \u0627\u0644\u0628\u0642\u0627\u0621 \u0623\u0639\u0644\u0649 \u0645\u0646 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0628\u0647\u0627\u0645\u0634 \u0645\u0639\u0642\u0648\u0644\u060c \u0648\u0644\u064a\u0633 \u0631\u0641\u0639 \u0627\u0644\u0633\u0631\u0639\u0629 \u0625\u0644\u0649 \u0623\u0642\u0635\u0649 \u062d\u062f.<\/p>\n<h2>\u0643\u064a\u0641\u064a\u0629 \u062a\u062d\u062f\u064a\u062f \u0645\u0642\u0627\u0633 \u0623\u0646\u0628\u0648\u0628 \u0634\u0641\u0637 \u0627\u0644\u063a\u0628\u0627\u0631 \u0641\u064a 8 \u062e\u0637\u0648\u0627\u062a<\/h2>\n<p>\u064a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0645\u062b\u0627\u0644 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u064a \u062e\u0637 \u0646\u062c\u0627\u0631\u0629 \u064a\u0636\u0645 \u0623\u0631\u0628\u0639 \u0645\u062d\u0637\u0627\u062a\u060c \u062d\u064a\u062b \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0629 A \u0647\u064a \u0627\u0644\u0623\u0628\u0639\u062f \u0639\u0646 \u0648\u062d\u062f\u0629 \u0627\u0644\u062a\u062c\u0645\u064a\u0639\u060c \u0648\u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0629 D \u0647\u064a \u0627\u0644\u0623\u0642\u0631\u0628.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 1: \u062a\u0633\u062c\u064a\u0644 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0630\u064a \u064a\u062d\u062a\u0627\u062c\u0647 \u0643\u0644 \u0646\u0642\u0637\u0629 \u0633\u062d\u0628<\/strong><\/p>\n<p>\u0627\u062d\u0635\u0644 \u0639\u0644\u0649 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0637\u0644\u0648\u0628 \u0645\u0646 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629 \u0644\u0644\u0645\u0627\u0643\u064a\u0646\u0629 \u0623\u0648 \u0645\u0646 \u062d\u0633\u0627\u0628\u0627\u062a \u063a\u0637\u0627\u0621 \u0627\u0644\u0633\u062d\u0628. \u0648\u0644\u0627 \u062a\u0633\u062a\u062e\u062f\u0645 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0648\u062d\u062f\u0629 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0645\u0642\u0633\u0648\u0645\u0627\u064b \u0639\u0644\u0649 \u0639\u062f\u062f \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0627\u062a.<\/p>\n<table border=\"1\">\n<tbody>\n<tr>\n<td><strong><b>\u0627\u0644\u0645\u062d\u0637\u0629<\/b><\/strong><\/td>\n<td><strong><b>\u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0637\u0644\u0648\u0628<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>A (\u0627\u0644\u0623\u0628\u0639\u062f)<\/td>\n<td>1,500 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>1,200 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>900 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<\/tr>\n<tr>\n<td>D (\u0627\u0644\u0623\u0642\u0631\u0628)<\/td>\n<td>2,000 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Done when: every pickup point has a documented airflow figure and its source.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 2: \u0627\u062e\u062a\u064a\u0627\u0631 \u0633\u0631\u0639\u0627\u062a \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0644\u0644\u0641\u0631\u0648\u0639 \u0648\u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a<\/strong><\/p>\n<p>\u0627\u0633\u062a\u0646\u0627\u062f\u0627\u064b \u0625\u0644\u0649 \u0627\u0644\u062c\u062f\u0648\u0644 \u0623\u0639\u0644\u0627\u0647\u060c \u064a\u0639\u062a\u0645\u062f \u0647\u0630\u0627 \u0627\u0644\u0645\u062b\u0627\u0644 \u0644\u0644\u0623\u0639\u0645\u0627\u0644 \u0627\u0644\u062e\u0634\u0628\u064a\u0629 \u0633\u0631\u0639\u0629 20 \u0645\/\u062b \u0641\u064a \u0627\u0644\u0641\u0631\u0648\u0639 \u064818 \u0645\/\u062b \u0641\u064a \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a.<\/p>\n<p>\u062a\u0643\u062a\u0645\u0644 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0646\u062f: \u062a\u062d\u062f\u064a\u062f \u0633\u0631\u0639\u0629 \u0648\u0627\u062d\u062f\u0629 \u0644\u0644\u0641\u0631\u0639 \u0648\u0633\u0631\u0639\u0629 \u0648\u0627\u062d\u062f\u0629 \u0644\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u060c \u0645\u0639 \u062a\u0648\u062b\u064a\u0642 \u0633\u0628\u0628 \u0627\u062e\u062a\u064a\u0627\u0631\u0647\u0645\u0627.<\/p>\n<p><strong>Step 3: Calculate each branch diameter<\/strong><\/p>\n<p>Use:<\/p>\n<ul>\n<li>\u0627\u0644\u0645\u0633\u0627\u062d\u0629 (\u0645\u00b2) = \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 (\u0645\u00b3\/\u0633\u0627\u0639\u0629) \u00f7 (3,600 \u00d7 \u0627\u0644\u0633\u0631\u0639\u0629 \u0628\u0648\u062d\u062f\u0629 \u0645\/\u062b)<\/li>\n<li>\u0627\u0644\u0642\u0637\u0631 (\u0645\u0645) = 1,000 \u00d7 \u221a(4 \u00d7 \u0627\u0644\u0645\u0633\u0627\u062d\u0629 \u00f7 \u03c0)<\/li>\n<\/ul>\n<p>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u062d\u0637\u0629 A: \u200f1,500 \u00f7 (3,600 \u00d7 20) = 0.0208 \u0645\u00b2\u060c \u0645\u0627 \u064a\u0639\u0637\u064a 163 \u0645\u0645.<\/p>\n<p>\u062a\u0643\u062a\u0645\u0644 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0646\u062f: \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0645\u062d\u0633\u0648\u0628 \u0644\u0643\u0644 \u0641\u0631\u0639.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 4: \u0627\u0644\u062a\u0642\u0631\u064a\u0628 \u0644\u0644\u0623\u0633\u0641\u0644 \u0625\u0644\u0649 \u062d\u062c\u0645 \u0642\u064a\u0627\u0633\u064a\u060c \u062b\u0645 \u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u0633\u0631\u0639\u0629<\/strong><\/p>\n<p>\u0625\u0630\u0627 \u0644\u0645 \u064a\u0643\u0646 \u0645\u0642\u0627\u0633 163 \u0645\u0645 \u0645\u062a\u0648\u0641\u0631\u0627\u064b \u0641\u064a \u0627\u0644\u0645\u062e\u0632\u0648\u0646\u060c \u0641\u0627\u062e\u062a\u0631 \u0627\u0644\u0645\u0642\u0627\u0633 \u0627\u0644\u0623\u0635\u063a\u0631 \u0627\u0644\u062a\u0627\u0644\u064a\u060c \u0648\u0644\u064a\u0633 \u0627\u0644\u0623\u0643\u0628\u0631. \u0641\u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0628\u0645\u0642\u0627\u0633 160 \u0645\u0645 \u0627\u0644\u0630\u064a \u064a\u0646\u0642\u0644 1,500 \u0645\u00b3\/\u0633\u0627\u0639\u0629 \u064a\u0639\u0645\u0644 \u0628\u0633\u0631\u0639\u0629 \u062a\u0642\u0627\u0631\u0628 20.7 \u0645\/\u062b. \u0623\u0645\u0627 \u0627\u0644\u062a\u0642\u0631\u064a\u0628 \u0644\u0644\u0623\u0639\u0644\u0649 \u0625\u0644\u0649 180 \u0645\u0645 \u0641\u064a\u062e\u0641\u0636 \u0627\u0644\u0633\u0631\u0639\u0629 \u0625\u0644\u0649 \u0646\u062d\u0648 16.4 \u0645\/\u062b\u060c \u0648\u0647\u0648 \u0645\u0627 \u064a\u0642\u0644 \u0639\u0646 \u0627\u0644\u0647\u062f\u0641 \u0627\u0644\u0645\u0637\u0644\u0648\u0628.<\/p>\n<table border=\"1\">\n<tbody>\n<tr>\n<td><strong><b>\u0627\u0644\u0645\u062d\u0637\u0629<\/b><\/strong><\/td>\n<td><strong><b>Calculated<\/b><\/strong><\/td>\n<td><strong><b>\u0627\u0644\u0645\u064f\u062e\u062a\u0627\u0631<\/b><\/strong><\/td>\n<td><strong><b>Actual velocity<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u0623<\/td>\n<td>163 mm<\/td>\n<td>160 mm<\/td>\n<td>20.7 m\/s<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>146 mm<\/td>\n<td>140 mm<\/td>\n<td>21.7 m\/s<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>126 mm<\/td>\n<td>125 mm<\/td>\n<td>20.4 m\/s<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>188 mm<\/td>\n<td>180 mm<\/td>\n<td>21.8 m\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u062a\u0643\u062a\u0645\u0644 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0646\u062f: \u0639\u0645\u0644 \u0643\u0644 \u0645\u0642\u0627\u0633 \u0645\u064f\u062e\u062a\u0627\u0631 \u0628\u0633\u0631\u0639\u0629 \u062a\u0639\u0627\u062f\u0644 \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0623\u0648 \u062a\u0641\u0648\u0642\u0647\u0627.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 5: \u062a\u062d\u062f\u064a\u062f \u0623\u0628\u0639\u0627\u062f \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0628\u062f\u0621\u064b\u0627 \u0645\u0646 \u0623\u0628\u0639\u062f \u0645\u062d\u0637\u0629 \u0648\u0646\u062d\u0648 \u0627\u0644\u062e\u0627\u0631\u062c<\/strong><\/p>\n<p>\u0627\u0628\u062f\u0623 \u0645\u0646 \u0627\u0644\u0646\u0642\u0637\u0629 A \u0648\u0623\u0636\u0641 \u062a\u062f\u0641\u0642 \u0647\u0648\u0627\u0621 \u0643\u0644 \u0641\u0631\u0639 \u0639\u0646\u062f \u0646\u0642\u0637\u0629 \u0627\u062a\u0635\u0627\u0644\u0647. \u0648\u0644\u0627 \u062a\u0642\u0645 \u0628\u0632\u064a\u0627\u062f\u0629 \u0642\u0637\u0631 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0625\u0644\u0627 \u0639\u0646\u062f \u0646\u0642\u0627\u0637 \u0627\u0644\u0627\u0644\u062a\u0642\u0627\u0621\u060c \u0648\u0644\u0627 \u062a\u0635\u063a\u0631\u0647 \u0623\u0628\u062f\u0627\u064b \u0628\u0627\u062a\u062c\u0627\u0647 \u0648\u062d\u062f\u0629 \u0627\u0644\u062a\u062c\u0645\u064a\u0639.<\/p>\n<table border=\"1\">\n<tbody>\n<tr>\n<td><strong><b>\u0645\u0642\u0637\u0639 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a<\/b><\/strong><\/td>\n<td><strong><b>\u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u062a\u0631\u0627\u0643\u0645\u064a<\/b><\/strong><\/td>\n<td><strong><b>Selected diameter<\/b><\/strong><\/td>\n<td><strong><b>Actual velocity<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u0648\u0635\u0644\u0629 \u0645\u0646 A \u0625\u0644\u0649 B<\/td>\n<td>1,500 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<td>160 mm<\/td>\n<td>20.7 m\/s<\/td>\n<\/tr>\n<tr>\n<td>\u0645\u0646 \u0627\u0644\u0648\u0635\u0644\u0629 B \u0625\u0644\u0649 C<\/td>\n<td>2,700 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<td>224 mm<\/td>\n<td>19.0 m\/s<\/td>\n<\/tr>\n<tr>\n<td>\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u0642\u0627\u0621 C \u0625\u0644\u0649 D<\/td>\n<td>3,600 \u0645\u00b3\/\u0633\u0627\u0639\u0629<\/td>\n<td>250 mm<\/td>\n<td>20.4 m\/s<\/td>\n<\/tr>\n<tr>\n<td>D to collector<\/td>\n<td>5,600 m\u00b3\/h<\/td>\n<td>315 mm<\/td>\n<td>20.0 m\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>If 224 mm is not in your supplier&#8217;s range, the next size down (200 mm) runs at about 23.9 m\/s. That works, at a higher pressure cost on that section.<\/p>\n<p>\u062a\u0643\u062a\u0645\u0644 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0646\u062f: \u0632\u064a\u0627\u062f\u0629 \u0642\u0637\u0631 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0639\u0646\u062f \u0643\u0644 \u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u0642\u0627\u0621 \u0648\u0628\u0642\u0627\u0621 \u0627\u0644\u0633\u0631\u0639\u0629 \u0641\u064a \u0643\u0644 \u0645\u0642\u0637\u0639 \u0623\u0639\u0644\u0649 \u0645\u0646 18 \u0645\/\u062b.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 6: \u062a\u062e\u0637\u064a\u0637 \u0642\u0637\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644<\/strong><\/p>\n<p>\u064a\u062d\u062f\u062b \u0645\u0639\u0638\u0645 \u0641\u0642\u062f\u0627\u0646 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0630\u064a \u064a\u0645\u0643\u0646 \u062a\u0641\u0627\u062f\u064a\u0647 \u0641\u064a \u0642\u0637\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u060c \u0648\u0644\u064a\u0633 \u0641\u064a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u0633\u062a\u0642\u064a\u0645\u0629.<\/p>\n<ul>\n<li>Elbows: use long-radius elbows. A centerline radius of at least 1.5 times the diameter is a common minimum, and 2 times is better where space allows.<\/li>\n<li>\u0645\u062f\u0627\u062e\u0644 \u0627\u0644\u0641\u0631\u0648\u0639: \u0627\u0631\u0628\u0637 \u0627\u0644\u0641\u0631\u0648\u0639 \u0628\u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0628\u0648\u0635\u0644\u0629 \u062a\u0641\u0631\u064a\u0639 \u0645\u0627\u0626\u0644\u0629 \u062c\u0627\u0646\u0628\u064a\u0629 (\u0639\u0627\u062f\u0629\u064b \u0628\u0632\u0627\u0648\u064a\u0629 30\u00b0 \u0623\u0648 45\u00b0) \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0648\u0635\u0644\u0629 \u062a\u064a \u0628\u0632\u0627\u0648\u064a\u0629 90\u00b0\u060c \u062d\u062a\u0649 \u064a\u0646\u062f\u0645\u062c \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0648\u0627\u0631\u062f \u0645\u0639 \u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u062f\u0641\u0642 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0627\u0635\u0637\u062f\u0627\u0645 \u0628\u0647.<\/li>\n<li>\u0644\u0627 \u064a\u0644\u062a\u0642\u064a \u0641\u0631\u0639\u0627\u0646 \u0623\u0628\u062f\u064b\u0627 \u0639\u0646\u062f \u0627\u0644\u0646\u0642\u0637\u0629 \u0646\u0641\u0633\u0647\u0627 \u0645\u0646 \u062c\u0627\u0646\u0628\u064a\u0646 \u0645\u062a\u0642\u0627\u0628\u0644\u064a\u0646 \u0641\u064a \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a.<\/li>\n<li>\u0627\u0644\u062e\u0631\u0637\u0648\u0645 \u0627\u0644\u0645\u0631\u0646: \u0627\u0642\u062a\u0635\u0631 \u0641\u064a \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0639\u0644\u0649 \u0627\u0644\u0648\u0635\u0644\u0629 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629 \u0627\u0644\u0642\u0635\u064a\u0631\u0629 \u0639\u0646\u062f \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0629\u061b \u0641\u0627\u0644\u062e\u0631\u0637\u0648\u0645 \u0627\u0644\u0645\u0645\u0648\u062c \u064a\u062a\u0645\u064a\u0632 \u0628\u0645\u0642\u0627\u0648\u0645\u0629 \u0623\u0639\u0644\u0649 \u0628\u0643\u062b\u064a\u0631 \u0644\u0643\u0644 \u0645\u062a\u0631 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0623\u0645\u0644\u0633.<\/li>\n<li>\u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a: \u0636\u0639 \u0628\u0648\u0627\u0628\u0629 \u062a\u0641\u0631\u064a\u063a \u0647\u0648\u0627\u0621 (Blast Gate) \u064a\u062f\u0648\u064a\u0629 \u0623\u0648 \u0623\u0648\u062a\u0648\u0645\u0627\u062a\u064a\u0643\u064a\u0629 \u0639\u0644\u0649 \u0643\u0644 \u0641\u0631\u0639 \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u060c \u062d\u062a\u0649 \u0644\u0627 \u062a\u062a\u0631\u0643 \u0627\u0644\u0641\u0631\u0648\u0639 \u0627\u0644\u0645\u063a\u0644\u0642\u0629 \u0633\u0648\u0649 \u0645\u0633\u0627\u0641\u0629 \u0642\u0635\u064a\u0631\u0629 \u062c\u062f\u064b\u0627 \u0645\u0646 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0631\u0627\u0643\u062f\u0629 \u0627\u0644\u062a\u064a \u0642\u062f \u064a\u0633\u062a\u0642\u0631 \u0641\u064a\u0647\u0627 \u0627\u0644\u063a\u0628\u0627\u0631.<\/li>\n<li>\u0625\u0645\u0643\u0627\u0646\u064a\u0629 \u0627\u0644\u0648\u0635\u0648\u0644 \u0644\u0644\u062a\u0646\u0638\u064a\u0641: \u0623\u0636\u0641 \u0641\u062a\u062d\u0627\u062a \u0641\u062d\u0635 \u0641\u064a \u0627\u0644\u0645\u0633\u0627\u0631\u0627\u062a \u0627\u0644\u0623\u0641\u0642\u064a\u0629 \u0627\u0644\u0637\u0648\u064a\u0644\u0629 \u0648\u0642\u0628\u0644 \u0627\u0644\u062a\u063a\u064a\u064a\u0631\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0641\u064a \u0627\u0644\u0627\u062a\u062c\u0627\u0647.<\/li>\n<\/ul>\n<p>Done when: a layout drawing shows every fitting type, its angle and its location.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 7: \u062d\u0633\u0627\u0628 \u0641\u0642\u062f \u0627\u0644\u0636\u063a\u0637 \u0641\u064a \u0627\u0644\u0646\u0638\u0627\u0645 \u0648\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0631\u0648\u062d\u0629<\/strong><\/p>\n<p>Add the losses for the longest or highest-resistance path: straight pipe, each fitting converted to an equivalent length or loss coefficient, the hood entry, the filter at its expected dirty condition, and any spark arrestor or silencer. Select the fan where its curve meets that total pressure at the required airflow.<\/p>\n<p>\u062a\u0643\u062a\u0645\u0644 \u0647\u0630\u0647 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0646\u062f: \u062a\u062d\u062f\u064a\u062f \u0646\u0642\u0637\u0629 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0631\u0648\u062d\u0629 \u0639\u0644\u0649 \u0627\u0644\u0631\u0633\u0645 \u0627\u0644\u0628\u064a\u0627\u0646\u064a \u0639\u0646\u062f \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u062a\u0635\u0645\u064a\u0645\u064a \u0648\u0636\u063a\u0637 \u0627\u0644\u0641\u0644\u062a\u0631 \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0627\u062a\u0633\u0627\u062e\u060c \u0648\u0644\u064a\u0633 \u0641\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u0641\u0644\u062a\u0631 \u0627\u0644\u0646\u0638\u064a\u0641.<\/p>\n<p><strong>\u0627\u0644\u062e\u0637\u0648\u0629 8: \u0627\u0644\u0642\u064a\u0627\u0633 \u0628\u0639\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u062a\u062c\u0631\u064a\u0628\u064a<\/strong><\/p>\n<p>\u0642\u0650\u0633 \u0627\u0644\u0633\u0631\u0639\u0629 \u0641\u064a \u0643\u0644 \u0641\u0631\u0639 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0646\u0628\u0648\u0628 \u0628\u064a\u062a\u0648 \u0623\u0648 \u0645\u0642\u064a\u0627\u0633 \u0631\u064a\u0627\u062d \u0645\u0646\u0627\u0633\u0628\u060c \u0648\u0633\u062c\u0651\u0644 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0633\u0627\u0643\u0646 \u0639\u0646\u062f \u0645\u062f\u062e\u0644 \u0627\u0644\u0645\u062c\u0645\u0639. \u062a\u0645\u062b\u0644 \u0647\u0630\u0647 \u0627\u0644\u0642\u0631\u0627\u0621\u0627\u062a \u062e\u0637 \u0627\u0644\u0623\u0633\u0627\u0633 \u0644\u0639\u0645\u0644\u0643. \u0648\u064a\u0634\u064a\u0631 \u0627\u0644\u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u062a\u062f\u0631\u064a\u062c\u064a \u0641\u064a \u0633\u0631\u0639\u0629 \u0627\u0644\u0641\u0631\u0639 \u0644\u0627\u062d\u0642\u0627\u064b \u0625\u0644\u0649 \u0627\u0646\u0633\u062f\u0627\u062f \u0627\u0644\u0641\u0644\u062a\u0631\u060c \u0623\u0648 \u0648\u062c\u0648\u062f \u062a\u0633\u0631\u064a\u0628 \u0641\u064a \u0625\u062d\u062f\u0649 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a\u060c \u0623\u0648 \u062a\u0631\u0627\u0643\u0645 \u0644\u0644\u0631\u0648\u0627\u0633\u0628 \u0641\u064a \u0627\u0644\u0623\u0646\u0628\u0648\u0628.<\/p>\n<p>\u062a\u0643\u062a\u0645\u0644 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0646\u062f: \u062a\u0648\u062b\u064a\u0642 \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u0642\u0627\u0633\u0629 \u0644\u0643\u0644 \u0641\u0631\u0639 \u0648\u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0627\u0633\u062a\u0627\u062a\u064a\u0643\u064a \u0627\u0644\u0645\u0631\u062c\u0639\u064a \u0641\u064a \u0648\u0631\u0642\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u062a\u062c\u0631\u064a\u0628\u064a.<\/p>\n<h2>\u0645\u0627\u0630\u0627 \u064a\u062d\u062f\u062b \u0639\u0646\u062f \u0625\u0636\u0627\u0641\u0629 \u0645\u062d\u0637\u0627\u062a \u0639\u0645\u0644 \u0623\u0648 \u0625\u063a\u0644\u0627\u0642\u0647\u0627\u061f<\/h2>\n<p>\u0647\u0646\u0627 \u062a\u0628\u062f\u0623 \u0627\u0644\u0634\u0628\u0643\u0627\u062a \u0627\u0644\u062a\u064a \u0643\u0627\u0646\u062a \u062a\u0639\u0645\u0644 \u0628\u0646\u062c\u0627\u062d \u0641\u064a \u064a\u0648\u0645 \u0628\u062f\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0628\u0627\u0644\u062a\u0639\u0637\u0644.<\/p>\n<p>Adding a station. Suppose station E (1,500 m\u00b3\/h) joins near the collector two years later. The last main section now needs to carry 7,100 m\u00b3\/h through the same 315 mm pipe, about 25.3 m\/s. Pressure loss on that section climbs, and unless the fan has spare capacity, total system airflow falls short of the new demand. The shortfall does not spread evenly. The far branches, with the longest path and the highest resistance, lose the most airflow, so station A drifts below transport velocity first. The symptom reported from the floor is &#8220;weak suction at the end of the line,&#8221; while the collector itself looks fine.<\/p>\n<p>\u0625\u063a\u0644\u0627\u0642 \u0627\u0644\u0645\u062d\u0637\u0627\u062a. \u0645\u0639 \u0645\u0631\u0648\u062d\u0629 \u062b\u0627\u0628\u062a\u0629 \u0627\u0644\u0633\u0631\u0639\u0629 \u0648\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u062d\u0637\u0629 A \u0641\u0642\u0637\u060c \u064a\u0646\u0642\u0644 \u0627\u0644\u0645\u0642\u0637\u0639 \u0630\u0648 \u0627\u0644\u0642\u0637\u0631 315 \u0645\u0645 \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0645\u062c\u0645\u0639 \u0627\u0644\u063a\u0628\u0627\u0631 \u062a\u062f\u0641\u0642\u064b\u0627 \u0642\u062f\u0631\u0647 1,500 \u0645\u00b3\/\u0633\u0627\u0639\u0629 \u0628\u0633\u0631\u0639\u0629 \u062a\u0628\u0644\u063a 5 \u0645\/\u062b \u062a\u0642\u0631\u064a\u0628\u064b\u0627. \u064a\u0646\u062a\u0642\u0644 \u0627\u0644\u063a\u0628\u0627\u0631 \u0645\u0646 \u0627\u0644\u0645\u062d\u0637\u0629 A \u0628\u0633\u0644\u0627\u0633\u0629 \u0639\u0628\u0631 \u0641\u0631\u0639\u0647\u0627 \u0627\u0644\u062e\u0627\u0635\u060c \u062b\u0645 \u064a\u0633\u062a\u0642\u0631 \u0641\u064a \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0627\u0644\u0623\u0643\u0628\u0631 \u0645\u0646 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0645\u0646\u0627\u0633\u0628.<\/p>\n<p>\u0623\u0631\u0628\u0639 \u0637\u0631\u0642 \u0644\u0644\u062a\u062e\u0637\u064a\u0637 \u0644\u0630\u0644\u0643:<\/p>\n<ul>\n<li>\u0635\u0645\u0651\u0645 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0627\u0644\u062a\u0632\u0627\u0645\u0646 \u0627\u0644\u0648\u0627\u0642\u0639\u064a. \u062d\u062f\u062f \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u062d\u0648\u0644 \u0627\u0644\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0645\u0639\u0627\u064b \u0628\u0627\u0644\u0641\u0639\u0644\u060c \u0648\u0648\u062b\u0651\u0642 \u0647\u0630\u0647 \u0627\u0644\u0641\u0631\u0636\u064a\u0629 \u0641\u064a \u0627\u0644\u0645\u062e\u0637\u0637\u0627\u062a.<\/li>\n<li>\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0645\u0631\u0648\u062d\u0629. \u064a\u062a\u064a\u062d \u0645\u062d\u0631\u0643 \u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u0633\u0631\u0639\u0629 \u064a\u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a\u0647 \u0648\u0641\u0642\u0627\u064b \u0644\u0646\u0642\u0637\u0629 \u0636\u0628\u0637 \u0644\u0644\u0636\u063a\u0637 \u0627\u0644\u0633\u0627\u0643\u0646 \u0627\u0633\u062a\u062c\u0627\u0628\u0629 \u0627\u0644\u0645\u0631\u0648\u062d\u0629 \u0639\u0646\u062f \u0641\u062a\u062d \u0627\u0644\u0628\u0648\u0627\u0628\u0627\u062a \u0648\u0625\u063a\u0644\u0627\u0642\u0647\u0627. \u0648\u062a\u062d\u0642\u0642 \u0648\u062d\u062f\u0627\u062a \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0645\u0631\u0627\u0648\u062d \u062a\u0623\u062b\u064a\u0631\u0627\u064b \u0645\u0634\u0627\u0628\u0647\u0627\u064b \u0645\u0646 \u062e\u0644\u0627\u0644 \u062a\u0634\u063a\u064a\u0644 \u0639\u062f\u062f \u0627\u0644\u0645\u0631\u0627\u0648\u062d \u0627\u0644\u0630\u064a \u064a\u062a\u0637\u0644\u0628\u0647 \u0627\u0644\u0637\u0644\u0628 \u0627\u0644\u062d\u0627\u0644\u064a \u0641\u0642\u0637.<\/li>\n<li>\u0623\u0636\u0641 \u062a\u0646\u0641\u064a\u0633\u0627\u064b \u0645\u062d\u0643\u0648\u0645\u0627\u064b \u0644\u0644\u0647\u0648\u0627\u0621. \u062d\u064a\u062b \u064a\u0633\u0645\u062d \u0635\u0645\u0627\u0645 \u0633\u062d\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0627\u0644\u0637\u0631\u0641 \u0627\u0644\u0628\u0639\u064a\u062f \u0644\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0628\u062f\u062e\u0648\u0644 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u062d\u064a\u0637 \u0644\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0633\u0631\u0639\u0629 \u0627\u0644\u0647\u0648\u0627\u0621 \u0641\u064a \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0639\u0646\u062f \u0641\u062a\u062d \u0639\u062f\u062f \u0642\u0644\u064a\u0644 \u0645\u0646 \u0627\u0644\u0645\u062d\u0637\u0627\u062a. \u064a\u0633\u062a\u0647\u0644\u0643 \u0630\u0644\u0643 \u0637\u0627\u0642\u0629 \u0645\u0646 \u0627\u0644\u0645\u0631\u0648\u062d\u0629\u060c \u0644\u0630\u0627 \u0641\u0647\u0648 \u062d\u0644 \u0644\u062d\u0627\u0644\u0629 \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0637\u0644\u0628 \u0627\u0644\u0645\u0639\u0631\u0648\u0641\u0629\u060c \u0648\u0644\u064a\u0633 \u062e\u064a\u0627\u0631\u0627\u064b \u0627\u0641\u062a\u0631\u0627\u0636\u064a\u0627\u064b.<\/li>\n<li>Recalculate before adding branches. Any new pickup point means rerunning steps 3 to 7 for the affected path. Do it before the tee is cut into the main.<\/li>\n<\/ul>\n<h2>\u0623\u062e\u0637\u0627\u0621 \u0634\u0627\u0626\u0639\u0629 \u0641\u064a \u062a\u062d\u062f\u064a\u062f \u0645\u0642\u0627\u0633\u0627\u062a \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0633\u062a\u062e\u0644\u0627\u0635 \u0627\u0644\u063a\u0628\u0627\u0631<\/h2>\n<ul>\n<li>\u0645\u0637\u0627\u0628\u0642\u0629 \u062d\u062c\u0645 \u0627\u0644\u0641\u0631\u0639 \u0645\u0639 \u0645\u062e\u0631\u062c \u0627\u0644\u0622\u0644\u0629. \u0641\u0627\u0644\u0622\u0644\u0629 \u0627\u0644\u0645\u0632\u0648\u062f\u0629 \u0628\u0641\u062a\u062d\u0629 \u0642\u0637\u0631\u0647\u0627 200 \u0645\u0645 \u0648\u0644\u0627 \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0627 \u0625\u0644\u0649 1,500 \u0645\u00b3\/\u0633\u0627\u0639\u0629 \u064a\u062c\u0628 \u062a\u0632\u0648\u064a\u062f\u0647\u0627 \u0628\u0645\u062d\u0648\u0644 \u062a\u0635\u063a\u064a\u0631 (\u0645\u062e\u0641\u0651\u0636) \u0644\u0641\u0631\u0639 \u0628\u0642\u0637\u0631 160 \u0645\u0645\u060c \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0646\u0628\u0648\u0628 \u0628\u0642\u0637\u0631 200 \u0645\u0645 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0627\u0644\u0645\u0633\u0627\u0631.<\/li>\n<li>\u0627\u0644\u062a\u0642\u0631\u064a\u0628 \u0644\u0644\u0623\u0639\u0644\u0649 \"\u0645\u0646 \u0623\u062c\u0644 \u0627\u0644\u0623\u0645\u0627\u0646\". \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0623\u0643\u0628\u0631 \u064a\u0642\u0644\u0644 \u0645\u0646 \u0627\u0644\u0633\u0631\u0639\u0629\u060c \u0648\u0627\u0644\u0627\u062a\u062c\u0627\u0647 \u0627\u0644\u0622\u0645\u0646 \u0639\u0627\u062f\u0629 \u0645\u0627 \u064a\u0643\u0648\u0646 \u0646\u062d\u0648 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0623\u0635\u063a\u0631.<\/li>\n<li>\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0648\u0635\u0644\u0627\u062a \u0627\u0644\u062a\u062f\u0641\u0626\u0629 \u0648\u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0648\u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0647\u0648\u0627\u0621 (HVAC). \u0623\u0643\u0648\u0627\u0639 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0630\u0627\u062a \u0646\u0635\u0641 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0642\u0635\u064a\u0631 \u0648\u0627\u0644\u0648\u0635\u0644\u0627\u062a \u0630\u0627\u062a \u0627\u0644\u062c\u062f\u0631\u0627\u0646 \u0627\u0644\u0631\u0642\u064a\u0642\u0629 \u0644\u064a\u0633\u062a \u0645\u0635\u0645\u0645\u0629 \u0644\u062a\u062d\u0645\u0644 \u0627\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u0643\u0627\u0634\u0637 \u0639\u0646\u062f \u0633\u0631\u0639\u0629 \u0627\u0644\u0646\u0642\u0644.<\/li>\n<li>\u062a\u062c\u0627\u0647\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0621 \u0627\u0644\u0633\u0627\u0643\u0646\u0629. \u064a\u0645\u0643\u0646 \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643\u064a\u0629 \u0648\u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u063a\u064a\u0631 \u0627\u0644\u0645\u0624\u0631\u0636\u0629 \u0623\u0646 \u062a\u0648\u0644\u062f \u0634\u062d\u0646\u0627\u062a \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0645\u0639 \u0627\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u062c\u0627\u0641. \u0627\u0633\u062a\u062e\u062f\u0645 \u0645\u062c\u0627\u0631\u064a \u0647\u0648\u0627\u0621 \u0645\u0648\u0635\u0644\u0629 \u0648\u0645\u0624\u0631\u0636\u0629 \u0641\u064a \u062d\u0627\u0644 \u0648\u062c\u0648\u062f \u063a\u0628\u0627\u0631 \u0642\u0627\u0628\u0644 \u0644\u0644\u0627\u0634\u062a\u0639\u0627\u0644\u060c \u0648\u0627\u062a\u0628\u0639 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0645\u0639\u0645\u0648\u0644 \u0628\u0647\u0627 \u0644\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u0642\u0627\u0628\u0644 \u0644\u0644\u0627\u0634\u062a\u0639\u0627\u0644.<\/li>\n<li>\u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u0644\u0632\u062c \u0623\u0648 \u0627\u0644\u0644\u064a\u0641\u064a \u0643\u0645\u0633\u062d\u0648\u0642 \u062c\u0627\u0641. \u064a\u0645\u0643\u0646 \u0644\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0631\u0637\u0628\u0629 \u0623\u0648 \u0627\u0644\u0632\u064a\u062a\u064a\u0629 \u0623\u0648 \u0627\u0644\u0644\u064a\u0641\u064a\u0629 \u0623\u0646 \u062a\u062a\u0631\u0627\u0643\u0645 \u062d\u062a\u0649 \u0639\u0646\u062f \u0633\u0631\u0639\u0627\u062a \u0646\u0642\u0644 \u0623\u0639\u0644\u0649 \u0645\u0646 \u0627\u0644\u0645\u0639\u062a\u0627\u062f. \u0648\u062a\u062a\u0637\u0644\u0628 \u0647\u0630\u0647 \u0627\u0644\u062d\u0627\u0644\u0627\u062a \u062a\u0635\u0645\u064a\u0645\u064b\u0627 \u0645\u062e\u0635\u0635\u064b\u0627 \u0644\u0644\u062a\u0637\u0628\u064a\u0642 \u0648\u0641\u062d\u0648\u0635\u0627\u062a \u062f\u0648\u0631\u064a\u0629 \u0623\u0643\u062b\u0631 \u062a\u0643\u0631\u0627\u0631\u064b\u0627.<\/li>\n<\/ul>\n<h2>\u0645\u0643\u0648\u0646\u0627\u062a \u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u063a\u0628\u0627\u0631 \u0645\u0646 Senserui<\/h2>\n<p><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/chinasensair.com\/ar\/%d8%a7%d9%84%d9%81%d8%a6%d8%a9\/%d8%a7%d9%84%d8%ad%d8%a7%d8%b3%d9%88%d8%a8-%d8%a7%d9%84%d8%b1%d8%a6%d9%8a%d8%b3%d9%8a-%d9%84%d9%84%d8%aa%d8%ad%d9%83%d9%85-%d9%81%d9%8a-%d8%a7%d9%84%d8%ba%d8%a8%d8%a7%d8%b1\/\">\u0633\u064a\u0646\u0633\u064a\u0631\u0648\u064a<\/a><\/span> \u062a\u0648\u0641\u0631 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0628\u0646\u0627\u0621 \u0634\u0628\u0643\u0629 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0648\u0627\u0644\u062a\u0641\u0631\u064a\u0639\u0627\u062a \u0627\u0644\u0645\u0648\u0636\u062d\u0629 \u0623\u0639\u0644\u0627\u0647\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643:<\/p>\n<ul>\n<li>\u0648\u0635\u0644\u0627\u062a \u062a\u064a (Tee) \u0644\u0631\u0628\u0637 \u0627\u0644\u0641\u0631\u0648\u0639 \u0628\u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a<\/li>\n<li><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/chinasensair.com\/ar\/%d8%b5%d9%85%d8%a7%d9%85-%d9%8a%d8%af%d9%88%d9%8a\/\">Manual valves<\/a><\/span> \u0644\u0644\u0641\u0631\u0648\u0639 \u0627\u0644\u062a\u064a \u062a\u064f\u0641\u062a\u062d \u0648\u062a\u064f\u063a\u0644\u0642 \u064a\u062f\u0648\u064a\u0627\u064b<\/li>\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0623\u0648\u062a\u0648\u0645\u0627\u062a\u064a\u0643\u064a\u0629 \u0644\u0644\u0641\u0631\u0648\u0639 \u062a\u0641\u062a\u062d \u0639\u0646\u062f \u0628\u062f\u0621 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0629\u060c \u0648\u062a\u062a\u0648\u0627\u0641\u0642 \u0645\u0639 \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u0633\u0631\u0639\u0629 \u0623\u0648 \u0627\u0644\u0645\u0631\u0627\u0648\u062d \u0627\u0644\u0645\u062a\u0639\u062f\u062f\u0629<\/li>\n<li><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/chinasensair.com\/ar\/%d9%81%d8%aa%d8%ad%d8%a9-%d8%aa%d9%86%d9%81%d9%8a%d8%b3-%d8%a7%d9%84%d8%a7%d9%86%d9%81%d8%ac%d8%a7%d8%b1\/\">\u0641\u062a\u062d\u0627\u062a \u062a\u0641\u0631\u064a\u063a \u0627\u0644\u0627\u0646\u0641\u062c\u0627\u0631<\/a><\/span> \u0644\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u0642\u0627\u0628\u0644 \u0644\u0644\u0627\u0634\u062a\u0639\u0627\u0644 \u0641\u064a \u0627\u0644\u0646\u0638\u0627\u0645<\/li>\n<li>Filter cartridges and related ducting accessories<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/chinasensair.com\/wp-content\/uploads\/2025\/11\/Manual-Valve-4.webp\" alt=\"\u0635\u0645\u0627\u0645 \u064a\u062f\u0648\u064a\" width=\"499\" height=\"508\" \/><\/p>\n<p>\u062a\u062e\u062a\u0644\u0641 \u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0628\u0627\u062e\u062a\u0644\u0627\u0641 \u0627\u0644\u0645\u0643\u0648\u0646 \u0648\u0627\u0644\u062d\u062c\u0645\u060c \u0648\u0644\u0627 \u064a\u0646\u0637\u0628\u0642 \u0646\u0637\u0627\u0642 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0645\u0648\u062d\u062f \u0639\u0644\u0649 \u0627\u0644\u0641\u0626\u0629 \u0628\u0623\u0643\u0645\u0644\u0647\u0627. \u064a\u062c\u0628 \u062a\u0623\u0643\u064a\u062f \u0627\u0644\u0623\u0642\u0637\u0627\u0631 \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0648\u062e\u064a\u0627\u0631\u0627\u062a \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0644\u0645\u0634\u0631\u0648\u0639\u0643 \u0623\u062b\u0646\u0627\u0621 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0646\u0638\u0627\u0645. \u0623\u0633\u0639\u0627\u0631 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0648 <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/chinasensair.com\/ar\/%d8%a7%d9%84%d9%81%d8%a6%d8%a9\/%d8%a7%d9%84%d9%85%d9%83%d9%88%d9%86%d8%a7%d8%aa\/\">\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a<\/a><\/span> \u0645\u062a\u0627\u062d \u0641\u064a<span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/chinasensair.com\/ar\/%d8%a7%d8%aa%d8%b5%d9%84-%d8%a8%d9%86%d8%a7\/\"> \u0627\u0644\u0637\u0644\u0628<\/a> <\/span>\u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0646\u0638\u0627\u0645 \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0639\u060c \u0646\u0638\u0631\u0627\u064b \u0644\u0623\u0646\u0647 \u064a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0637\u0648\u0644 \u0627\u0644\u0634\u0628\u0643\u0629\u060c \u0648\u0627\u0644\u0623\u0642\u0637\u0627\u0631\u060c \u0648\u0639\u062f\u062f \u0627\u0644\u0648\u0635\u0644\u0627\u062a\u060c \u0648\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0633\u0644\u0627\u0645\u0629.<\/p>\n<p>The Senserui Engineering Team supports airflow calculation, duct-network design and safety planning as part of project assessment.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/chinasensair.com\/wp-content\/uploads\/2025\/11\/Explosion-Vent-1.jpg\" alt=\"\u0641\u062a\u062d\u0629 \u062a\u0646\u0641\u064a\u0633 \u0627\u0644\u0627\u0646\u0641\u062c\u0627\u0631\" width=\"557\" height=\"567\" \/><\/p>\n<h2>\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/h2>\n<p><strong>\u0633: \u0645\u0627 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0633\u062a\u062e\u0644\u0627\u0635 \u0627\u0644\u063a\u0628\u0627\u0631\u061f<\/strong><\/p>\n<p>\u062c: \u0644\u0627 \u064a\u0648\u062c\u062f \u0642\u0637\u0631 \u0648\u0627\u062d\u062f \u0635\u062d\u064a\u062d. \u0641\u0627\u0644\u0623\u0645\u0631 \u064a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0639\u0646\u062f \u062a\u0644\u0643 \u0627\u0644\u0646\u0642\u0637\u0629 \u0641\u064a \u0627\u0644\u0634\u0628\u0643\u0629 \u0648\u0639\u0644\u0649 \u0633\u0631\u0639\u0629 \u0627\u0644\u0646\u0642\u0644 \u0627\u0644\u062a\u064a \u064a\u062a\u0637\u0644\u0628\u0647\u0627 \u0646\u0648\u0639 \u0627\u0644\u063a\u0628\u0627\u0631 \u0644\u062f\u064a\u0643. \u0627\u062d\u0633\u0628 \u0627\u0644\u0645\u0633\u0627\u062d\u0629 \u0628\u0642\u0633\u0645\u0629 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0639\u0644\u0649 \u0627\u0644\u0633\u0631\u0639\u0629\u060c \u062b\u0645 \u062d\u0648\u0651\u0644\u0647\u0627 \u0625\u0644\u0649 \u0642\u0637\u0631\u060c \u0648\u0642\u0631\u0651\u0628\u0647 \u0644\u0644\u0623\u0642\u0644 \u0625\u0644\u0649 \u0645\u0642\u0627\u0633 \u0642\u064a\u0627\u0633\u064a.<\/p>\n<p><strong>Q: Will a more powerful fan fix poor suction at the far end of the line?<\/strong><\/p>\n<p>\u062c: \u0641\u064a \u0628\u0639\u0636 \u0627\u0644\u0623\u062d\u064a\u0627\u0646\u060c \u0648\u0644\u0643\u0646 \u063a\u0627\u0644\u0628\u064b\u0627 \u0644\u0627. \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0633\u0628\u0628 \u0647\u0648 \u0639\u062f\u0645 \u0643\u0641\u0627\u064a\u0629 \u0633\u0639\u0629 \u0627\u0644\u0645\u0631\u0648\u062d\u0629 \u0628\u0639\u062f \u0625\u0636\u0627\u0641\u0629 \u0645\u062d\u0637\u0627\u062a\u060c \u0641\u0625\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0631\u0648\u062d\u0629 \u0623\u0643\u0628\u0631 \u0633\u064a\u0641\u064a\u062f. \u0623\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0633\u0628\u0628 \u062e\u0637\u064b\u0627 \u0631\u0626\u064a\u0633\u064a\u064b\u0627 \u0623\u0643\u0628\u0631 \u0645\u0646 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u060c \u0623\u0648 \u0648\u062c\u0648\u062f \u062a\u0633\u0631\u064a\u0628\u0627\u062a\u060c \u0623\u0648 \u063a\u0628\u0627\u0631\u064b\u0627 \u0645\u062a\u0631\u0633\u0628\u064b\u0627\u060c \u0641\u0625\u0646 \u0632\u064a\u0627\u062f\u0629 \u0642\u062f\u0631\u0629 \u0627\u0644\u0645\u0631\u0648\u062d\u0629 \u0633\u062a\u0631\u0641\u0639 \u0627\u0633\u062a\u0647\u0644\u0627\u0643 \u0627\u0644\u0637\u0627\u0642\u0629 \u062f\u0648\u0646 \u0627\u0633\u062a\u0639\u0627\u062f\u0629 \u0627\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0641\u064a \u0627\u0644\u0623\u0645\u0627\u0643\u0646 \u0627\u0644\u062a\u064a \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u064a\u0647\u0627.<\/p>\n<p><strong>Q: Is round pipe better than rectangular duct for dust extraction?<\/strong><\/p>\n<p>A: For conveying dust, round pipe is generally preferred. It holds velocity more evenly across its section, leaves no corners for dust to collect, and is easier to seal.<\/p>\n<p><strong>Q: How often should dust extraction pipes be inspected?<\/strong><\/p>\n<p>A: Base it on your dust and your measurements. Compare branch velocity and static pressure against the commissioning baseline, and inspect sections where readings change. Combustible-dust facilities should follow the inspection requirements in the standard that applies to them, such as NFPA 660.<\/p>\n<p><strong>\u0633: \u0647\u0644 \u064a\u0645\u0643\u0646\u0646\u064a \u0625\u0636\u0627\u0641\u0629 \u0645\u0627\u0643\u064a\u0646\u0629 \u062c\u062f\u064a\u062f\u0629 \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u0631\u0643\u064a\u0628 \u0648\u0635\u0644\u0629 \u062a\u064a (Tee) \u0641\u064a \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0627\u0644\u062d\u0627\u0644\u064a\u061f<\/strong><\/p>\n<p>\u062c: \u0641\u0642\u0637 \u0628\u0639\u062f \u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062d\u0633\u0627\u0628. \u064a\u0624\u062f\u064a \u0625\u0636\u0627\u0641\u0629 \u0641\u0631\u0639 \u062c\u062f\u064a\u062f \u0625\u0644\u0649 \u062a\u063a\u064a\u064a\u0631 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0648\u0627\u0644\u0636\u063a\u0637 \u0648\u0627\u0644\u0633\u0631\u0639\u0629 \u0641\u064a \u062c\u0645\u064a\u0639 \u0623\u0646\u062d\u0627\u0621 \u0627\u0644\u0634\u0628\u0643\u0629\u060c \u0648\u0639\u0627\u062f\u0629 \u0645\u0627 \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u0628\u0639\u064a\u062f\u0629 \u0647\u064a \u0623\u0648\u0644 \u0645\u0646 \u064a\u062a\u0623\u062b\u0631 \u0628\u0630\u0644\u0643.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u062d\u062f\u062f \u0645\u0642\u0627\u0633 \u0623\u0646\u0628\u0648\u0628 \u0634\u0641\u0637 \u0627\u0644\u063a\u0628\u0627\u0631 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0648\u0633\u0631\u0639\u0629 \u0627\u0644\u0646\u0642\u0644\u060c \u0648\u0644\u064a\u0633 \u0642\u062f\u0631\u0629 \u0627\u0644\u0645\u0631\u0648\u062d\u0629. \u0642\u0633\u0651\u0645 \u062a\u062f\u0641\u0642 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0643\u0644 \u0646\u0642\u0637\u0629 \u0633\u062d\u0628 \u0639\u0644\u0649 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u064a \u062a\u0628\u0642\u064a \u0627\u0644\u063a\u0628\u0627\u0631 \u0639\u0627\u0644\u0642\u0627\u064b \u0641\u064a \u0627\u0644\u0647\u0648\u0627\u0621\u060c \u062b\u0645 \u062d\u0648\u0651\u0644 \u062a\u0644\u0643 \u0627\u0644\u0645\u0633\u0627\u062d\u0629 \u0625\u0644\u0649 \u0642\u0637\u0631\u060c \u0648\u0642\u0631\u0651\u0628 \u0644\u0644\u0623\u0633\u0641\u0644 \u0625\u0644\u0649 \u062d\u062c\u0645 \u0642\u064a\u0627\u0633\u064a. \u062d\u062f\u062f \u062d\u062c\u0645 \u0627\u0644\u062e\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0628\u062f\u0621\u0627\u064b \u0645\u0646 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0623\u0628\u0639\u062f\u060c \u0645\u0639 \u062a\u0643\u0628\u064a\u0631\u0647 \u0641\u0642\u0637 \u0639\u0646\u062f \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0642\u0627\u0621 \u0627\u0644\u0641\u0631\u0648\u0639.<\/p>","protected":false},"featured_media":863,"comment_status":"closed","ping_status":"closed","template":"","class_list":["post-1535","news","type-news","status-publish","has-post-thumbnail","hentry","news_category-industry-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/chinasensair.com\/ar\/wp-json\/wp\/v2\/news\/1535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chinasensair.com\/ar\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/chinasensair.com\/ar\/wp-json\/wp\/v2\/types\/news"}],"replies":[{"embeddable":true,"href":"https:\/\/chinasensair.com\/ar\/wp-json\/wp\/v2\/comments?post=1535"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chinasensair.com\/ar\/wp-json\/wp\/v2\/media\/863"}],"wp:attachment":[{"href":"https:\/\/chinasensair.com\/ar\/wp-json\/wp\/v2\/media?parent=1535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}