Investigation on capacity matching in liquid desiccant and heat pump hybrid air-conditioning systems

被引:74
作者
Niu, Xiaofeng [1 ,2 ]
Xiao, Fu [1 ]
Ma, Zhenjun [1 ]
机构
[1] Hong Kong Polytech Univ, Dept Bldg Serv Engn, Kowloon, Hong Kong, Peoples R China
[2] Nanjing Univ Technol, Coll Urban Construct & Safety Engn, Nanjing 210009, Jiangsu, Peoples R China
来源
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2012年 / 35卷 / 01期
关键词
Desiccant system; Heat pump; Compression system; Heat balance; Simulation; PERFORMANCE ANALYSIS; MASS-TRANSFER; DEHUMIDIFICATION; COMBINATION; EQUIPMENT; LITHIUM;
D O I
10.1016/j.ijrefrig.2011.08.004
中图分类号
O414.1 [热力学];
学科分类号
摘要
Liquid desiccant and heat pump (LDHP) hybrid air-conditioning system provides a promising independent air dehumidification solution. Capacity matching among the four major heat and mass transfer components, i.e. dehumidifier, regenerator, evaporator and condenser, is essentially important for energy efficiency of the hybrid system. In this paper, the configuration of the hybrid system is firstly studied. Novel matching indices are proposed to evaluate the matching effect. The results show that a LDHP hybrid system with double-condenser, one solution-cooled and one air-cooled, is a feasible configuration for achieving capacity matching. To achieve dynamic capacity matching under real changing operating conditions, the effects of three critical operating variables, including solution flow rate, revolution of the compressor and air flow rate in the air-cooled condenser, on capacity matching and energy performance are studied. Simulation results show that dynamic capacity matching can only be achieved by regulating these three operating variables simultaneously. (C) 2011 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码:160 / 170
页数:11
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