基于R124/DMAC为工质的压缩吸收式制冷系统的性能分析

doi:10.16085/j.issn.1000-6613.2016-1922

化工进展 ›› 2017, Vol. 36 ›› Issue (07): 2436-2442.DOI: 10.16085/j.issn.1000-6613.2016-1922

基于R124/DMAC为工质的压缩吸收式制冷系统的性能分析

贾炯¹, 王辉涛¹, 刘泛函¹, 葛众²

1 昆明理工大学冶金与能源工程学院, 云南昆明 650032;
2 清华大学热科学与动力工程教育部重点实验室, 北京 100084

收稿日期:2016-10-20 修回日期:2017-02-23 出版日期:2017-07-05 发布日期:2017-07-05
通讯作者: 王辉涛,博士,教授,主要从事低温制冷和新能源方向的研究。
作者简介:贾炯(1989-),男,硕士研究生,研究方向为制冷、空调及节能。E-mail:67278396@qq.com。
基金资助:
国家自然科学基金项目（51366005）。

Performance study of compressive energy absorption refrigeration system based on R124/DMAC mixture

JIA Jiong¹, WANG Huitao¹, LIU Fanhan¹, GE Zhong²

1 Faculty of Metallurgical and Energy Engineering, Kunming University of science and technology, Kunming 650032, Yunnan, China;
2 Key Laboratory for Thermal Science and Power Engineering of MOE, Tsinghua University, Beijing 100084, China

Received:2016-10-20 Revised:2017-02-23 Online:2017-07-05 Published:2017-07-05

摘要/Abstract

摘要： 吸收式制冷能够利用工业余热进行制冷，但存在不能高效利用100℃以下废热的问题。本文以压缩吸收式制冷系统为研究对象，采用新型制冷工质对R124/DMAC，对不同发生压力、发生温度和冷凝温度下系统性能的变化规律进行研究，并与传统氨/水制冷系统的性能进行比较。结果表明影响系统制冷系数（COP）、（火用）损和（火用）效率的主要因素是发生温度和发生压力，在相同冷凝温度下，R124/DMAC制冷系统的最佳发生压力为600kPa，最佳发生温度为75℃；而氨/水制冷系统的最佳发生压力为1100kPa，最佳发生温度为100℃，采用新型制冷工质对能够有效地利用更低品位的热源进行制冷，同时系统的安全性更高。

关键词: 压缩吸收式制冷, （火用）, 热力学, 仿真, 模型

Abstract: Absorption refrigeration can recover industrial waste heat,but cannot effectively utilize waste heat below 100℃.Aiming at the problems of high pressure and temperature in the traditional ammonia absorption refrigeration system,the performance of compressive absorption refrigeration system was simulated with R124/DMAC as working fluids.Operating parameters were studied by changing operating temperatures,pressures and condensing temperatures.Operating temperature and pressure were the major factors influencing system COP,energy loss and efficiency.Compared with the traditional ammonia absorption refrigeration system,the results showed that at the same condensing temperature,the maximum COP of the two working fluid systems was the same.But the new system had a lower pressure of 600kPa (ammonia system of 1100kPa),a lower temperature of 75℃(ammonia system is 100℃).The irreversibility using the new refrigerant and the exergy efficiency were in a reasonable range.The main factors influencing the system of COP,exergy loss and exergy efficiency were pressure,temperature and condensing temperature.

Key words: absorption/compression refrigerator, exergy, thermodynamics, simulation, model

中图分类号:

TK124

贾炯, 王辉涛, 刘泛函, 葛众. 基于R124/DMAC为工质的压缩吸收式制冷系统的性能分析[J]. 化工进展, 2017, 36(07): 2436-2442.

JIA Jiong, WANG Huitao, LIU Fanhan, GE Zhong. Performance study of compressive energy absorption refrigeration system based on R124/DMAC mixture[J]. Chemical Industry and Engineering Progress, 2017, 36(07): 2436-2442.

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基于R124/DMAC为工质的压缩吸收式制冷系统的性能分析

Performance study of compressive energy absorption refrigeration system based on R124/DMAC mixture

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