Performance analysis of a cascade lithium bromide absorption refrigeration/dehumidification process driven by low-grade waste heat for hot summer and cold winter climate area in China

被引：45

作者：

Xu, Aixiang ^{[1
]}

Xu, Mengjin ^{[1
]}

Xie, Nan ^{[2
]}

Liang, Jiawei ^{[1
]}

Zeng, Keman ^{[1
]}

Kou, Guangxiao ^{[1
]}

Liu, Zhiqiang ^{[2
]}

Yang, Sheng ^{[2
]}

机构：

[1] Hunan Univ Technol, Sch Civil Engn, Zhuzhou 412007, Hunan, Peoples R China

[2] Cent South Univ, Sch Energy Sci & Engn, Changsha 410083, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2021年 / 228卷

基金：

中国国家自然科学基金;

关键词：

Lithium bromide absorption refrigeration system; Lithium chloride liquid dehumidification system; Coefficient of performance; Low-grade waste heat; Hot summer and cold winter area; AIR-CONDITIONING SYSTEM; COMPRESSION REFRIGERATION SYSTEM; MASS-TRANSFER PROCESSES; LIQUID DESICCANT; THEORETICAL-ANALYSIS; LOW-TEMPERATURE; DEHUMIDIFICATION; RECOVERY; ENERGY; SIMULATION;

D O I：

10.1016/j.enconman.2020.113664

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Recovery of low-grade waste heat has great potential to reduce energy consumption around the world. In this paper, a novel cascade lithium bromide absorption refrigeration/dehumidification system is developed to recover low-grade waste heat with temperature range from 90 degrees C to 150 degrees C for dehumidification in hot summer and cold winter climate area of China. This system consists of two subsystems: lithium bromide absorption refrigeration system and lithium chloride liquid dehumidification system. The low-grade waste heat is applied by two subsystems in a cascade approach. The key parameters in terms of air temperature, air humidity, solution concentration, and solution temperature are investigated to obtain the optimization design of the proposed system. Performance of the proposed system is analyzed for different refrigeration temperatures. The results show that the max coefficient of performance for the proposed system is 0.6029. The moisture removal rate and the humidity efficiency are 20.20 g/kg and 0.9385. The novel coupling system develops a creative and efficient way to recover low-grade waste heat for dehumidification in hot summer and cold winter climate area of China.

引用

页数：14

共 25 条

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