基于风机盘管串联的大温差空调末端研究

Study on Large Temperature Difference Terminals based on Serially Combined FCU

风机盘管串联运行能够实现冷水15℃大温差运行,是一个潜在的大温差末端方案。运用工程上常用的表冷器计算方法对这一方案进行了系列设计计算和研究,计算结果与常规5℃温差风机盘管机组进行了各项参数的对比分析。结果表明:在相同供冷量的条件下,串联风机盘管机组可降低冷水流量62%左右,水泵功耗可降低49%左右,潜热和显热等指标可以满足使用要求,具有较好的可行性。

Serially combined Fan Coil Unit(FCU)is proposed as solution for 15℃large temperature difference terminal.Design and study on the serially combined FCU is conducted and compared with the conventional 5℃temperature difference FCU at the same cooling capacity.The results show that the serially combined FCU can reduce the chilled water flow rate at about 62%and the power consumption of the pump at about 49%,latent and sensible cooling capacity can match the need of air-conditioning requirement,which validate the feasibility of the solution.