对新风空调机组阀权度的探讨
Discussions on authority of a valve in fresh air handling units
摘要：
根据北京地区的全年气象参数，选择实际的新风机组，研究盘管的“冷量-流量”特性，并由此选取合理的控制阀阀权度。结果表明，对于集中空调水系统中的新风机组，采用阀权度Pv=0.3可以满足调节精度的要求，与常用的Pv=0.5相比，减小了水泵设计扬程，降低了输送能耗。
关键词：阀权度 工作特性 表冷器
Abstract：
According to the annual climatic parameters in Beijing, selects an actual fresh air handling unit and studies the characteristics of cooling capacity with water flow rate for coils. Obtains a rational valve authority. As a result, a valve authority of 0.3 is satisfactory and is more economical in design pump head and transporting energy consumption compared with that of 0.5.
Keywords:authority of valve, working characteristic, surface air cooler