Aerodynamic performance test aerodynamic performance test fire exhaust fan in accordance with the provisions GB + T 1236 will be. Sound Test noise measurement method according to CB / r 2888 requirements. Noise limits should be consistent with the provisions of 7BIT 8690. High temperature test rod into the press GA211 regulations. High performance crystal playing field required to achieve the specified 4.42. Exhaust fan for the selection of the main control parameters temperature, air flow, total pressure, efficiency, noise, electrical power, speed and shaft power. Exhaust fan at a temperature not higher than 85 ℃ conditions should be long-term normal operation. Exhaust fan shall ensure that: When the transmission medium temperature at 280 ℃ continuous work 30min when production exhaust fan, and the temperature of the cooling medium to still continuous normal operation at ambient temperatures. At rated speed in the work area, fans of the measured pressure curve with the description given in the curve should meet the following requirements: the most affordable exhaust fan, Sheng clean air-conditioning (certified), Wuwei exhaust fan from the Texas Rising Air Conditioning Equipment Co., Ltd.-purification. Texas Air Conditioning Equipment Co., Ltd. Sheng-purification (www.dzhffj.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Sheng leader in clean air conditioning with the staff warmly welcome all inquiries negotiations to create clean air conditioning Sheng better future.