采用冷冻除湿的温湿分控户式空调系统的送风分析

韩　星,张　旭,李魁山,隋学敏(同济大学机械工程学院暖通空调及燃气研究所,上海200092)
[摘　要] 采用冷冻除湿的温湿分控户式空调系统,可将室内显热负荷与湿负荷分开处理,采用辐射方式处理显热负荷,送风承担湿负荷,同时也承担一部分室内显热负荷。因此,如何选定合理的送风温度和送风量是需要解决的问题。本文首先以送风承担室内显热负荷最小为目标,计算最佳的送风量及送风温度;然后,研究在不同的室内湿负荷条件下,送风量对送风承担室内负荷以及空调系统能耗的影响,考虑室内人员对新风的要求后,得到合理的送风温度;最后,计算了采用冷冻除湿的温湿分控空调系统的能耗,与常规温度控制空调系统的能耗进行比较,得到了在合理的送风温度下,如果采用新风处理室内湿负荷,温湿分控空调系统比常规温度控制空调系统节能11 %～46 % ,如果采用回风处理室内湿负荷,则温湿分控空调比常规温度控制空调系统节能21 %～46 %。
[关键词] 空调;温湿分控;送风温度;节能
[中图分类号] TU83115 ;TU83419 　　　[文献标识码] A
Analysis on Air Supply of Freezing Dehumidification2based Independent
Temperature2humidity Control of Residential Air2conditioning System
HAN Xing , ZHANG Xu ,LI Kui2shan , SUI Xue2min
( Institute of HVAC & Gas Engineering , College of Mechanical Engineering , Tongji University , Shanghai 200092 , China)[Abstract ] The sensible and latent heat loads could be treated separately in the independent temperature2humidity control system ,in which supply air was used to remove the moisture and a part of sensible heat load generated from the indoor space ,while a radiation panel was used to remove the sensible heat load. Therefore ,supply air temperature and air flow rate of this system should be carefully considered. In this paper ,the supply air temperature and air flow rate were firstly studied to make the supply air deal with the least sensible heat load. Secondly , the influences of air flow rate on energy consumption and cooling load that removed by the supply air were studied under different indoor latent load conditions ,also the reasonable supply air temperature was obtained when the fresh air requirements were considered. Finally ,the energy consumption of this systemwas investigated ,when it was compared with the traditional air2conditioning system ,the energy of 11 %～46 % could be saved when fresh air was used to remove the moisture ,on the other hand ,when the return air was used to remove the moisture , the corresponding value was 21 %～46 %.
[ Keywords ] air2conditioning system ,independent temperature2humidity control ,supply air temperature ,energy conservation

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