工艺排风系统风管压力损失计算与风机压头选择
Pressure loss calculation of air ducts and fan pressure selection for process exhaust systems
摘要：
对于排风系统而言，风机压头计算对风机选择十分重要。风机的设计压头与系统阻力是否匹配直接影响系统运行的可靠性和经济性。而对于工艺排风系统，需要额外考虑废气处理设备的压力损失。结合工程实例，介绍了工艺排风系统的风管压力损失计算和风机压头选择。
关键词：工艺排风,风管,沿程阻力损失,局部阻力损失,压头选择,风机
Abstract：
For exhaust system, the calculation of fan pressure is very important to selection of fan. The matching degree of the design pressure of fans and the system resistance affects the system reliability and efficiency. For process exhaust system, the pressure loss of the waste gas treatment equipment must be considered. With an engineering example, presents the pressure loss calculation of air ducts and fan pressure selection for the process exhaust system.
Keywords:process exhaust, air duct, frictional head loss, local resistance loss, pressure selection, fan