A novel variable effect LiBr-water absorption refrigeration cycle

被引：58

作者：

Xu, Z. Y. ^{[1
]}

Wang, R. Z. ^{[1
]}

Xia, Z. Z. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China

来源：

ENERGY | 2013年 / 60卷

关键词：

Variable effect; LiBr-Water; Absorption refrigeration; Simulation; SYSTEM; PERFORMANCE; SIMULATION;

D O I：

10.1016/j.energy.2013.08.033

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Generation temperatures from 110 degrees C to 140 degrees C are not enough to drive a double effect LiBr-water absorption cycle but too high for a single effect cycle under typical operating conditions. A novel LiBr-water absorption cycle which contains an AGX (absorber generator heat exchanger) is introduced for this. The AGX absorption cycle is able to make use of the high pressure condensation heats of different temperature, and get different amounts of extra refrigeration thus obtains 1.n effect refrigeration. The novel cycle can work under generation temperatures from 85 degrees C to 150 degrees C with evaporation temperature of 5 degrees C, absorption temperature of 35 degrees C and condensation temperature of 40 degrees C. The results of simulation show that the novel cycle can work in single effect mode, 1.n effect mode and double effect mode when the generation temperatures are in the ranges of 85 degrees C-93 degrees C, 93oC-140 degrees C and 140 degrees C-150 degrees C, and reach a COP (coefficient of performance) of 0.75, 0.75-1.08 and 1.08-1.25 respectively. Comparison between this novel cycle and existing cycle working under similar generation temperature range shows that the novel cycle has a better performance. The large working range also makes the cycle suitable for solar cooling utilizing medium temperature solar collector. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：457 / 463

页数：7

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