Fan performance tables in the performance review, performance listed in the table is the most efficient performance within the range, according to the characteristics of the flow is divided into five, chosen according to the performance table when subject fan factory qualified performance at full rated flow pressure value does not exceed ± 5%. Performance selection table is a performance standard state, boring technical documents or performance requirements are standard in state orders, whichever exhaust fan where the good, the standard state atm = 101325Pa, t = 20 Ψ = 50% relative humidity of the air condition, when the actual conditions of use does not comply with the above formula when you press the relevant conversion, fan installation can be divided into vertical or horizontal, vertical installation in the order as stated in the largest exhaust fan manufacturers, such as flow, pressure and mounting dimensions Performance parameters have special requirements, the company will provide you with a separate design and production. SWF series mixed flow fan is characterized by mixed mainly by cross flow fan impeller, duct and the motor of three parts. Impeller material is generally aluminum or plastic. High-strength aluminum alloy wheel, light weight, high temperature, can maintain long-term stable operation without distortion; plastic impeller by mold injection Shandong exhaust fan, then welded together by ultrasound, generally used for low speed applications, a larger diameter . Duct sheet metal stamping generally be plastic or aluminum casting. Streamlined design chassis exhaust fan, which can effectively reduce the loss of air flow, so that greatly improved the efficiency of the fan. Is part of the cross flow fan motor power, the AC power supply can also be a DC power supply. There are shaded pole AC-powered electric motor and capacitor start motor, a DC power supply, compared with brushless DC motors. Drive motor and impeller for flexible installation is generally fixed to the duct. Shandong exhaust fan price, Hao Yang air conditioning equipment (certified), exhaust fan provided by the Texas Air Conditioning Equipment Co., Ltd. Hao Yang. Air Conditioning Equipment Co., Texas Hao Yang (www.dzapjt.com) is a leader in 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. Hao Yang air conditioning equipment in leadership with the staff warmly welcome all inquiries negotiations to create Hao Yang air conditioning equipment a better future.