Experimental and numerical analysis of an air-cooled double-lift NH3-H2O absorption refrigeration system

被引：31

作者：

Aprile, Marcello ^{[1
]}

Toppi, Tommaso ^{[1
]}

Guerra, Marco ^{[1
]}

Motta, Mario ^{[1
]}

机构：

[1] Politecn Milan, Dept Energy, I-20156 Milan, Italy

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2015年 / 50卷

关键词：

Absorption cooling; Ammonia-water absorption cycle; Experimental data; Modelling;

D O I：

10.1016/j.ijrefrig.2014.10.018

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The prototype of an air-cooled double-lift NH3-H2O absorption chiller driven by hot water at low temperature is presented. The main objective of the study is to illustrate the experimental performances of the prototype under different operating conditions. A mathematical model of the cycle is developed, along with a procedure for the identification of otherwise difficult to measure data, with the purpose of providing the complete picture of the internal thermodynamic cycle. The combined experimental and numerical data allowed assessing the effects on the thermodynamic cycle with varying operating conditions. The unit operated steadily with chilled water inlet 12 degrees C, outlet 7 degrees C, air temperature between 22 degrees C and 38 degrees C, and hot water driving temperatures between 80 degrees C and 90 degrees C. The reference cooling capacity at air temperature of 30 degrees C is 2.5 kW, with thermal COP about 0.3 and electrical COP about 10. (C) 2014 Elsevier Ltd and IIR. All rights reserved.

引用

页码：57 / 68

页数：12

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