• 标题：Experimental investigation of a liquid desiccant dehumidification system integrated with shallow geothermal energy
• 关键词：Liquid desiccant,Dehumidification system,Shallow geothermal energy,Solution temperature,Energy savings
• 作者：Jyun-De Liang, Bo-Hao Huang, Yuan-Ching Chiang, Sih-Li Chen

This study proposes a liquid desiccant dehumidifification system combined with shallow geothermal energy. Calcium chloride solution is adopted as a desiccant that is sprayed directly on outdoor air for dehumidifification purposes. Shallow geothermal energy is a clean renewable energy that is located beneath the ground surface approximately 3e50 m deep. In this study, the shallow geothermal energy water is utilized as a substitute for chilled water or cooling water. Shallow geothermal energy water, at about 20e22 C, could precool outdoor air and cool the desiccant solution. Precooling outdoor air before it enters the dehumidififier can remove a sensible cooling load in advance and increase the performance of the dehumidififier. Moreover, the lower temperature solution is benefificial for enhancing sensible, latent, and total heat transfer rates. Based on the calculated results, under the same operating conditions, compared to the condensation system and the traditional liquid desiccant dehumidifification system, the proposed system saves 86% and 82%, respectively, on power consumption. Result shows that a liquid desiccant dehumidifification system integrated with shallow geothermal energy is an effective approach to enhance dehumidifification performance and cooling capacity.

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