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上海交通大学 制冷与低温工程研究所, 上海 200240
收稿日期:
2020-01-16出版日期:
2021-04-28发布日期:
2021-04-30通讯作者:
徐震原E-mail:xuzhy@sjtu.edu.cn作者简介:
安美燕(1996-),女,山东省烟台市人,硕士生,现主要从事工业余热回收方面的研究基金资助:
国家自然科学基金资助项目(51606124)A Hybrid Compression-Absorption High Temperature Heat Pump Cycles for Industrial Waste Heat Recovery
AN Meiyan, ZHAO Xinrui, XU Zhenyuan(![](http://xuebao.sjtu.edu.cn/images/email.png)
Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China
Received:
2020-01-16Online:
2021-04-28Published:
2021-04-30Contact:
XU Zhenyuan E-mail:xuzhy@sjtu.edu.cn摘要/Abstract
摘要: 针对常规吸收式热泵和压缩式热泵无法兼顾温升与效率的问题,本文提出采用热耦合压缩-吸收式热泵来达到高效高温输出的目的,并根据不同场景需求构建大温升型循环和高温输出型循环.采用R245fa和溴化锂-水溶液作为工质,针对100 ℃以上输出温度,利用Aspen Plus软件建立数学模型并对循环性能进行计算.研究结果显示:在采用大温升型循环回收30~40 ℃余热时,循环最优能效比(COP)可以达到2.58以上;在采用高温输出型循环回收60~70 ℃余热时,循环最优COP可以达到2.83;两种新循环在温升、输出温度和效率上比R245fa压缩式循环均有明显提升.
关键词: 工业余热, 热泵, 压缩, 吸收, 回收, Aspen Plus软件
Abstract: Aimed at the problem that the conventional absorption heat pumps and compression heat pumps cannot take into account the temperature rise and efficiency, this paper proposes the use of a thermally-coupled hybrid compression-absorption heat pump to achieve high-efficiency and high-temperature output. To meet the demands of different scenarios, a large-temperature-lift cycle and a high-temperature-output cycle are constructed. R245fa and lithium bromide aqueous solution are used as working substance. For output temperature above 100℃, Aspen Plus software is used to establish a mathematical model to predict the cycle performance for calculation. The results show that the optimized coefficient of performance(COP) can be 2.58 or higher when the large-temperature-lift cycle is used to recover the waste heat at 30-40℃. When the high-temperature-output cycle is used to recycle waste heat at 60-70℃, the optimized COP of the cycle can reach 2.83. The cycles proposed are more advantageous than the R245fa compression cycle on temperature lift, output temperature, and efficiency.
Key words: waste heat, heat pump, compression, absorption, recovery, Aspen Plus software
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