制冷技术2025，Vol.45Issue(1)：1-6,12,7.DOI:10.3969/j.issn.2095-4468.2025.01.101
基于可逆化学反应的选择性吸收-压缩复合热泵循环
Selective Absorption-Compression Hybrid Heat Pump Cycle Based on Reversible Chemical Reaction
摘要
Abstract
In order to improve the heat recovery efficiency,a heat pump system based on ammonium carbamate(AC)reversible chemical reaction combined with absorption is proposed,in which AC decomposes to recover waste heat.The reaction heat of AC(2 010 kJ/kg)is around 13.4 times and 1.8 times that of R134a and NH3,respectively.A steady-state thermodynamic model is established and results show that as the temperature difference of reaction increases,coefficient of performance(COP)decreases.For every 5℃increase in temperature difference of reaction,the COP decreases by approximately 4.22%,and the reaction temperature difference should not exceed 35℃.While the greater the concentration of AC and conversion rate are,the greater the COP is.Compared with the conventional absorption heat pump cycles,the COP of AC heat pump is about 1.4 times of that of LiBr/H2O absorption heat pump and 1.8 times of NH3/H2O absorption heat pump,demonstrating significant performance advantages.关键词
氨基甲酸铵/化学反应/热力分析/吸收式热泵Key words
Ammonium carbamate/Chemical reaction/Thermodynamic analysis/Absorption heat pump分类
通用工业技术引用本文复制引用
李伟格,殷勇高,戴苏洲..基于可逆化学反应的选择性吸收-压缩复合热泵循环[J].制冷技术,2025,45(1):1-6,12,7.基金项目
国家重点研发计划(No.2018YFC0705306),国家自然科学基金(No.52076039). （No.2018YFC0705306）
