Experimental research on heat and mass transfer characteristics of cross-flow closed-type heat-source tower

被引：30

作者：

Song, Pengyuan ^{[1
]}

Wang, Baolong ^{[1
]}

Li, Xianting ^{[1
]}

Shi, Wenxing ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab Indoor Air Qual Evaluat & Control, Dept Bldg Sci, Beijing 100084, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2018年 / 135卷

基金：

中国国家自然科学基金;

关键词：

Closed-type heat-source tower; Low ambient temperature; Low concentration; Heat and mass transfer; Frost-free; LIQUID DESICCANT; AIR DEHUMIDIFICATION; PACKED-COLUMN; PERFORMANCE; SYSTEM; DEHUMIDIFIER/REGENERATOR; REGENERATOR;

D O I：

10.1016/j.applthermaleng.2018.02.053

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A heat-source tower heat pump (HTHP) is a potential heating source for space heating due to frost-free characteristic. The heat and mass transfer between the antifreeze solution and air at low ambient temperatures is a key issue for performance enhancement. In this study, a test bench for evaluating the cross-flow closed-type heat-source tower (CCHT) is fabricated to investigate its performance under variable working conditions. Based on the experimental results, correlations of heat and mass transfer coefficients are developed, which can be used to predict the performance of the CCHT. As a result, the mass transfer coefficient between the solution and the air of the CCHT is 0.015-0.051 kgm(-2)s(-1), while that of the liquid desiccant dehumidifier is 0.0037-0.015kgm(-2)s(-1). However, the latent heat ratio of the CCHT is 6-31%, while that of the liquid desiccant dehumidifier is 42-124%.

引用

页码：289 / 303

页数：15