HTF series fire temperature exhaust fan system state-level "Spark" project product kitchen exhaust fan, exhaust fan roof with excellent performance, high temperature performance, high efficiency, covering less than the centrifugal fan, convenient installation. 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), the 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. Kitchen exhaust fan, air conditioning Rui Xincheng (certified), exhaust fan provided by Rui Xincheng Air Conditioning Equipment Co., Texas. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Rui Xincheng conditioning in leadership with the staff warmly welcome all inquiries negotiations to create a better future Rui Xincheng air conditioning.