Thermodynamic analysis of novel refrigeration cycle based on physicochemical thermal effect

ZHOU Jie; YIN Yonggao

doi:10.11949/j.issn.0438-1157.20181300

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Thermodynamic analysis of novel refrigeration cycle based on physicochemical thermal effect

更新时间：2025-12-10

- Thermodynamic analysis of novel refrigeration cycle based on physicochemical thermal effect
- CIESC Journal Issue S2, Pages: 408-412(2018)
- 作者机构：
  
  东南大学能源与环境学院,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181300
  CLC： Q025.3
- Online First：31 December 2018，
  
  Published：31 December 2018
- 稿件说明：
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ZHOU Jie, YIN Yonggao. Thermodynamic analysis of novel refrigeration cycle based on physicochemical thermal effect[J]. CIESC Journal, 2018, (S2): 408-412.
DOI：

ZHOU Jie, YIN Yonggao. Thermodynamic analysis of novel refrigeration cycle based on physicochemical thermal effect[J]. CIESC Journal, 2018, (S2): 408-412. DOI： 10.11949/j.issn.0438-1157.20181300.

摘要

提出一种基于物化热效应的制冷新循环，该循环利用氨基甲酸铵分解反应以及反应产物汽化的吸热效应进行制冷，利用该反应的逆反应实现放热。对不同运行工况下循环的热力性能进行了理论计算与分析，结果表明，吸、放热过程温差不宜高于40℃，中间压力、中间温度对循环热力性能影响显著，存在最佳的中间压力使循环热力性能达到最大，同时确定了该循环的最佳中间压力，且最佳中间温度为该压力下的平衡温度。与单级蒸汽压缩式制冷的理论循环相比，该循环的性能系数提高约20%，与液体汽化相变制冷循环相比，具有更高的能效。

Abstract

A novel refrigeration cycle based on physicochemical thermal effect was proposed. This cycle utilizes the endothermic effects of the decomposition reaction of ammonium carbamate as well as the vaporization of the reaction product to refrigerate

and releases heat through the reverse reaction. The thermodynamic performance of the cycle was investigated and evaluated under different operating conditions. The results show that the temperature difference between endothermic and exothermic reaction should not be higher than 40℃. The intermediate pressure has a significant influence on the coefficient of performance (COP) of the system and there is an optimal intermediate pressure to achieve the maximum COP. The optimal intermediate pressure is determined

and the optimal intermediate temperature is the equilibrium temperature at this pressure. Besides

the novel cycle has a higher COP than the theoretical cycle of the single-stage vapor compression refrigeration system by about 20%. Compared with the cycle utilizing the phase change of the material to refrigerate

this novel cycle has better prospects for development.

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