Performance analysis of a new heat pump driven multi-stage fresh air handler using solid desiccant plates
Performance analysis of a new heat pump driven multi-stage fresh air handler using solid desiccant plates
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DOI：
10.1016/j.applthermaleng.2017.02.005
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发表时间：
2017-05
影响因子：
6.4
通讯作者：
Rang Tu;Y. Hwang;Fei Ma
中科院分区：
文献类型：
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作者：
Rang Tu;Y. Hwang;Fei Ma
本文提出了一种使用固体干燥剂板的热泵驱动的多级新风处理器。该系统可根据室外空气温度和湿度比在四种模式下运行。本文讨论了固体除湿模式下系统的性能，该系统通过根据工艺空气入口温度和湿度调节激活级数，以较低的功耗实现所需的送风湿度比。首先，在北京夏季工况下分析了干燥板总厚度、总级数和切换周期对系统性能的影响。在考虑压缩机和风扇的功耗后，建议采用四级系统，干燥剂板的总厚度为 240 毫米。接下来，基于建议系统讨论了北京夏季降温四种典型工况下的最佳启动级数。研究发现，当室外空气湿度低于14 g·kg−1时，建议的活性阶段数为2~3。
A heat pump driven multi-stage fresh air handler using solid desiccant plates is proposed in this paper. This system can be operated under four modes depending on the outdoor air temperature and humidity ratio. This paper discusses the performances of the system under the solid desiccant dehumidification mode, which realizes a desired supply air humidity ratio with lower power consumption by adjusting the activated stage number according to the process air inlet temperature and humidity. First, influences of the total thickness of desiccant plates, the total stage number and the switching period on performances of this system were analyzed under Beijing summer condition. After the power consumption of both the compressor and the fans considered, a four-stage system with the total thickness of desiccant plates being 240 mm was suggested. Next, the optimal activated stage number under four typical working conditions of Beijing summer cooling period were discussed based on the suggested system. It was found that when the outdoor air humidity ratio were lower than 14 g·kg−1, the suggested active stage number was 2–3.