Use the effect of aluminum and steel impeller wheel is the same hood fan selection, use the occasion to look at the general decided to use what impeller. 1. The proportion of steel is 7.85 fan plenum, while the proportion of aluminum about 2.7 (usually with aluminum, aluminum can not be used for low intensity), nearly three times the weight difference. Because of its light weight aluminum, power consumption can be reduced accordingly, to play to save energy. 2. The melting point of about 1500 degrees steel, aluminum is 660 degrees. At high temperatures, aluminum impeller must not be used. 3. steel easily oxidized in the air (absence of anti-corrosion treatment before, such as zinc, etc.), and aluminum in the oxide surface to form a dense oxide film, making it impossible to continue the oxidation. In the case of a slight corrosive atmosphere aluminum impeller than steel impeller. 4. strength greater than steel aluminum, due to the strength of the restrictions centrifugal fan muffler, large fan impeller generally used steel impeller. Energy-efficient fan speed mode: Frequency energy-efficient fan for AC induction motor, its performance far exceeds any previous AC and DC speed control mode. Simple structure, wide speed range, speed and high precision, easy to use installation, protection function, stable and reliable, energy-saving effect is remarkable, have become the latest trend AC motor speed. Welcome customers to inquire, we wholeheartedly for your service. Fan plenum, Wuhai fans, air-conditioning equipment provided by Hao Yang Hao Yang Air Conditioning Equipment Co., Texas. Air Conditioning Equipment Co., Texas Hao Yang (www.dzapjt.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 Hao Yang air conditioning and you hand into the brilliant, for a better future!