Study of a novel solar-driven internally cooled liquid desiccant system for hot and humid climates

IF 1.7 4区工程技术 Q3 MECHANICS

Heat and Mass Transfer Pub Date : 2024-03-08 DOI:10.1007/s00231-024-03462-3

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引用次数: 0

Abstract

The current paper experimentally studied the performance of solar-driven internally cooled liquid desiccant system for hot and humid climates using CaCl₂ as a liquid desiccant. The system is designed to investigate the input conditions of the room by adjusting various air and solution variables. This internally cooled liquid desiccant system consists of the dehumidifier and regenerator in a single module and the regeneration of the solution is done by solar energy. The present study analyzes the effect of solution concentration, air mass flow rate and solution volume flow rate using different performance indices such as humidity reduction, moisture effectiveness, enthalpy effectiveness, and COP. The results demonstrate that the maximum moisture reduction of 4.2 g/kg d.a. is found at an airflow rate of 0.03195 kg/s, a solution volume flow rate of 12.5 LPM, and a solution concentration of 37%, while the maximum COP of 0.274 is obtained at an airflow rate of 0.0715 kg/s, a solution volume flow rate of 12.5 LPM, and a solution concentration of 37%. The maximum moisture and enthalpy effectiveness are obtained as 24.1% and 26.2%, respectively. The paper also presents the correlations for moisture and enthalpy effectiveness based on findings from experiments.

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针对湿热气候的新型太阳能驱动内部冷却液体干燥剂系统研究

摘要本文通过实验研究了在湿热气候条件下使用 CaCl2 作为液体干燥剂的太阳能驱动内部冷却液体干燥剂系统的性能。该系统旨在通过调整各种空气和溶液变量来研究房间的输入条件。这种内部冷却的液体干燥剂系统由除湿器和再生器组成一个模块，溶液的再生由太阳能完成。本研究利用不同的性能指标，如湿度降低率、湿度效率、焓效率和 COP，分析了溶液浓度、空气质量流量和溶液体积流量的影响。结果表明，在空气流速为 0.03195 kg/s、溶液体积流量为 12.5 LPM、溶液浓度为 37% 时，最大降湿量为 4.2 g/kg d.a.；在空气流速为 0.0715 kg/s、溶液体积流量为 12.5 LPM、溶液浓度为 37% 时，最大 COP 为 0.274。最大湿度和焓效率分别为 24.1% 和 26.2%。本文还介绍了基于实验结果的湿度和焓效率相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Heat and Mass Transfer 工程技术-力学

CiteScore

4.80

自引率

4.50%

发文量

148

审稿时长

8.0 months

期刊介绍： This journal serves the circulation of new developments in the field of basic research of heat and mass transfer phenomena, as well as related material properties and their measurements. Thereby applications to engineering problems are promoted. The journal is the traditional "Wärme- und Stoffübertragung" which was changed to "Heat and Mass Transfer" back in 1995.