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首页> 外文期刊>International Journal of Heat and Mass Transfer >Experimental and theoretical analysis of heat and mass transfer in a packed column dehumidifier/regenerator with liquid desiccant
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Experimental and theoretical analysis of heat and mass transfer in a packed column dehumidifier/regenerator with liquid desiccant

机译：装有液体干燥剂的填充塔除湿机/蓄热室中传热和传质的实验和理论分析

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摘要

This paper presents the experimental tests and the theoretical analysis on the chemical dehumidification of air by a liquid desiccant and desiccant regeneration in an absorption/desorption column with random packing. The experimental set-up is fully described together with measurements, procedures, data reduction and accuracy. The experimental tests include dehumidification and desiccant regeneration runs carried out with the traditional hygroscopic salt solutions H_2O/LiCl and H_2O/LiBr and the new salt solution H_2O/KCOOH in the typical operative ranges of air conditioning applications. A theoretical model of the packed column and the relative simulation computer code was developed to predict the performance of the system and to analyse the system sensitivity to the main operating parameters. A fair agreement was found between the experimental tests and the simulation computer code. The experimental tests and the theoretical analysis show that the chemical dehumidification of air by hygroscopic salt solutions ensures consistent reduction in humidity ratio, which is suitable for applications to air conditioning or drying processes. Moreover, desiccant regeneration requires a temperature level around 40-50℃ which can be easily obtained by using solar energy or heat recovered from an industrial process or from a thermal engine.
机译：本文介绍了无规填充吸收/解吸塔中液体干燥剂对空气进行化学除湿和干燥剂再生的实验测试和理论分析。实验设置以及测量，过程，数据减少和准确性都得到了充分描述。实验测试包括在典型的空调应用范围内，使用传统的吸湿盐溶液H_2O / LiCl和H_2O / LiBr以及新的盐溶液H_2O / KCOOH进行除湿和干燥剂再生。建立了填充塔的理论模型和相关的模拟计算机代码，以预测系统的性能并分析系统对主要操作参数的敏感性。在实验测试和模拟计算机代码之间找到了公平的协议。实验测试和理论分析表明，用吸湿盐溶液对空气进行化学除湿可确保始终如一地降低湿度比，适用于空调或干燥过程。此外，干燥剂的再生需要40-50℃左右的温度水平，这可以通过使用太阳能或从工业过程或热力发动机回收的热量轻松获得。

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