Exhaust fan blower fan selection options: Select the desired air volume exhaust fan is calculated according to the size and spatial arrangement of the kitchen exhaust hood as follows: 1, total exhaust volume, according to the kitchen space, 40-60 air changes per hour times. The total area of ??160 square meters, such as the kitchen, the height of three meters. Ventilation is required for 160X3X60 = 28800m3 / h. 2, local kitchen exhaust hood according to the windward side (exhaust hood perimeter minus the length of the wall) exhaust fan modules, wind speed of about 0.5 meters per second. Such as kitchen exhaust hood circumference of 25 meters, 10 meters in length where the wall. The ventilation rate required for the 3600X (25-10) X0.5 = 27000m3 / h two: calculate the required fan static pressure pipeline under the circumstances: 1, according to the amount of wind and wind speed (wind speed 10-15 m / s or so) to determine duct cross-sectional area. Duct aspect ratio should not exceed 2: 1 (in order to save material and reduce the drag). 2, according to the wind speed, the wind pipe cross-sectional area, elbows, reducers, etc. to calculate the drag (ie, the required fan static pressure). Three: According to the calculated air volume, static pressure. Select the appropriate fan. Unique design HTF series exhaust fan: high-temperature closed built-in exhaust fan motor, arranged a special motor cooling system that uses CAD software designed for multi-objective optimization of axial and mixed flow impeller structure, through a multi-speed drive in the form of two-speed exhaust fan reach one machine (ie, ventilation and fire used to send row when the trial temperature exhaust), arranged after the electrical control box remote automatic control, has good high temperature performance, high efficiency, small size, ease of installation (horizontal, vertical , lifting may be) and so on. Fire Code by GBJ500-45-95 test standard assay that can run continuously at 400 ℃ high temperature above 100 minutes kitchen exhaust fan, medium temperature 100 ℃ under the conditions of continuous operation 20 hours / times without damage, has been the major approved for use by the city fire department. Exhaust fan module, Xinyu exhaust fan, air conditioning provided by Rui Xincheng Rui Xincheng Air Conditioning Equipment Co., Texas. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Rui Xincheng air conditioning and you hand into the brilliant, for a better future!