Optimum generator temperature to couple different diffusion absorption solar cooling systems

被引：6

作者：

Acuna, A. ^{[1
]}

Lara, F. ^{[1
]}

Velazquez, N. ^{[2
]}

Cerezo, J. ^{[2
]}

机构：

[1] Univ Politecn Baja California, Mexicali, Baja California, Mexico

[2] Univ Autonoma Baja California, Inst Ingn, Mexicali 21100, Baja California, Mexico

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2014年 / 45卷

关键词：

Solar cooling system; Diffusion absorption; Solar collector; NH3-NaSCN; NH3-LiNO3; WATER;

D O I：

10.1016/j.ijrefrig.2014.05.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents the generator temperatures to achieve the highest efficiency in different solar diffusion absorption cooling systems. Ammonia-lithium nitrate (NH3-LiNO3) and sodium ammonia-thiocyanate (NH3-NaSCN) were examined as the working mixtures, and the flat-plate collector (FPC), the flat-plate collector improved (FPCI), the evacuated-tube collector (ETC) and the compound parabolic concentrator (CPC) were the thermal energy sources. The study was conducted with a simulation in steady-state conditions. The effects of the generator temperature on the global efficiency of each solar cooling system were studied. The results show that the FPC and the FPCI cannot activate the cooling system at evaporator temperatures below 0 degrees C and the ambient temperature is at 40 degrees C. At evaporator temperatures above 5 degrees C with an ambient temperature of 30 degrees C, all solar collector technologies activated different working mixtures. The optimum coupling temperatures were between 70 and 150 degrees C. The ETC/NH3-LiNO3 was between 5 and 54% relatively better than other technologies. (C) 2014 Elsevier Ltd and IIR. All rights reserved.

引用

页码：128 / 135

页数：8

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