Standard blower fan manufacturing and detection based mainly GB / T 1236-2000 "industrial fan duct standardized performance tests", JB / T 9068-1999 "to the multi-blade centrifugal fan before", JB / T 8932-1999 "Wind chassis", GB 10080-2001 "air conditioning fan safety requirements", JB / T 9069-2000 "roof ventilator", GB 10178-2006 "industrial fan site performance test", JB / T 10281-2001 "Fire exhaust fan technical conditions ", GB / T 13933-2008" Small cross flow fan ", JB / T 6411-1992" HVAC, air conditioning with axial fan ", JB / T 7258-2006" General Purpose centrifugal blower ", JB / T 10562-2006" general purposes technical conditions ", JB / T 10563-2006" general purpose centrifugal fan technical conditions ", GB 19761-2009" fan energy efficiency limit value and energy efficiency evaluation value ", JG / T 259-2009" Jet induction unit ", JB / T 7221-1994" unit air conditioning units with double inlet centrifugal fan ", JB / T 8932-1999" air box ", GBT 19075 -2003 "Industrial Fan vocabulary definitions and types", etc. Centrifugal fan is essentially a constant flow device changed. When the constant speed of the high-pressure suction blower, centrifugal fan pressure - flow theory curve should be a straight line losses due to internal axial fan selection, the actual curve is curved. Pressure generated by the centrifugal fan in severely affected the intake air temperature or density changes. Minimum pressure for a given amount of intake air fan, produced the highest intake air temperature (air density minimum). For a given pressure and flow characteristics fan model, there is a power and flow characteristics. When the blower to constant speed for a given flow, reducing the power required with intake air temperature rises multi-blade centrifugal fan |. Hao Yang air conditioning equipment (certified) | Fan Yang Hao provided by the Texas Air Conditioning Equipment Co., Ltd. . Air Conditioning Equipment Co., Texas Hao Yang (www.dzhykt.com) is Dezhou, chemical fiber fabric, lining leaders, 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.