Design and testing of a novel 3-fluid liquid-to-air membrane energy exchanger (3-fluid LAMEE)
Design and testing of a novel 3-fluid liquid-to-air membrane energy exchanger (3-fluid LAMEE)
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DOI：
10.1016/j.ijheatmasstransfer.2015.08.075
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发表时间：
2016
影响因子：
5.2
通讯作者：
M. Abdel-Salam;R. Besant;C. Simonson
中科院分区：
文献类型：
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作者：
M. Abdel-Salam;R. Besant;C. Simonson
液膜能量交换器是由微孔半透膜构成，在两种不同的流体(空气和液体干燥剂)之间传递热量和水蒸气。在过去的十年里，研究表明，LAMES可以显著降低暖通空调系统的能耗。本文设计了一种新型的三流体层压样机，并对其进行了试验。拟议的3流体LAME的主要目标是提高常规2流体LAME的性能(即显性、潜伏性和总有效性、水分去除率和显性冷却能力)。所提出的3流体LAME与2流体平板LAME的主要区别在于，在除湿溶液通道内放置制冷管，以提高制冷能力，并沿3流体LAME的长度控制除湿溶液的温度。在目前的工作中，使用水作为制冷剂。本文的主要贡献在于研究表明，冷却水进口温度和质量流量对三流体膜的稳态性能有显著影响。与相同设计参数的2流体LAME相比，随着冷却水进口温度和质量流量的变化，3流体LAME的显热效率、潜热效率、总效率、吸湿率和显冷能力分别提高了69%、28%、39%、54%和140%。
Liquid-to-air-membrane energy exchangers (LAMEEs) are constructed with micro-porous semi-permeable membranes and transfer heat and water vapor between two separate fluids (air and liquid desiccant). Over the last decade, research has shown that LAMEEs can significantly reduce the energy consumption of HVAC systems. In this paper, a novel 3-fluid LAMEE prototype is designed and tested. The main objective of the proposed 3-fluid LAMEE is to enhance the performance (i.e. sensible, latent, and total effectivenesses, moisture removal rate, and sensible cooling capacity) of regular 2-fluid LAMEEs. The major difference between the proposed 3-fluid LAMEE and a 2-fluid flat-plate LAMEE is that, refrigeration tubes are placed inside the desiccant solution channels to enhance the cooling capacity and control the temperature of the desiccant solution along the length of the 3-fluid LAMEE. Water is used as the refrigerant in the current work. The main contribution of this paper is that it shows that the inlet temperature and mass flow rate of the cooling water have significant influences on the steady-state performance of the 3-fluid LAMEE. Compared to a 2-fluid LAMEE with the same design parameters, the sensible, latent, and total effectivenesses, moisture removal rate, and sensible cooling capacity of the 3-fluid LAMEE are improved by up to 69%, 28%, 39%, 54%, and 140% respectively, depending on the inlet temperature and mass flow rate of the cooling water.