Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
Online ISSN : 2185-789X
Print ISSN : 1344-4905
ISSN-L : 1344-4905

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Experimental analysis of dehumidification and humidification performance of a desiccant module
Li ZHANGTomohiro HIGASHIMichiyuki SAIKAWAHiromi HASEGAWAEiji HIHARAChaobin DANG
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JOURNAL FREE ACCESS Advance online publication

Article ID: 19-39_OA_EM

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Abstract

For conventional air conditioning systems, the efficiency degradation caused by sub cooling dehumidification in summer and air drying due to no humidification function in winter are two important issues in terms of energy efficiency and thermal comfort. Desiccant is considered to be one of options to humidity control with high efficiency instead of sub cooling dehumidification method adopted in conventional air conditioning systems. In this study, experiments were conducted to measure the dehumidification and humidification performance of a desiccant module consisting of a desiccant-coated heat exchanger and a novel slide type air flow switching device. Experimental results show that the desiccant module under the size of 500 (Height) x 700 (Width) x 1100 (Length) mm can satisfy 90% of the dehumidification and humidification demand (1050 g·hour-1 for summer and 750 g·hour-1 for winter) of a detached house at the floor space of 90m2, ceiling height of 2.4m, ventilation frequency of 0.7 times per hour.

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