| 摘要: |
| 本文提出一种新型吸收-压缩复叠制冷循环，该循环由内燃机余热驱动的高温级复合吸收-压缩制冷循环与动力驱动的低温级CO2亚临界压缩制冷循环复叠构成。对不同制冷工质对在此循环中的性能进行了对比分析；并进一步研究了关键参数对复叠制冷循环性能的影响规律；最后进行了经济性分析。结果表明：该循环的理论性能优于两级复叠制冷循环；在冷凝温度为40 ℃、蒸发温度为-35 ℃条件下，R124-DMAC/R744性能优异，COP可达2.864，是较为理想的工质对，且年总成本较低为15 150.14 美元。 |
| 关键词: 复叠制冷循环 余热回收 制冷剂 |
| DOI： |
| 投稿时间：2021-03-17 修订日期：2021-07-16
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| 基金项目:国家自然科学基金项目（51776115）资助项目；山东省自然科学基金（ZR2020QE208），海洋能源利用与节能教育部重点实验室（大连理工大学）开放基金资助。 |
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| Performance and Economic Analysis of Absorption-compression Cascade Refrigeration Cycle Driven by Waste Heat |
| Han Xiaolong,Li Jianbo,Kong Xiangqiang,Zhang Chen,Yin Li,Wang Zhihao |
| (College of mechanical and Electronic Engineering, Shandong University of Science and Technology) |
| Abstract: |
| This study proposes an absorption-compression cascade refrigeration cycle. The cycle consists of a high-temperature stage combined absorption-compression refrigeration cycle, which is driven by the waste heat of the internal combustion engine, and a low-temperature stage CO2 subcritical compression refrigeration cycle, which is driven by power. The performances of different refrigerant pairs in the cycle are compared, and the influence of key parameters on the performance of the cycle is further discussed. Finally, an economic analysis is performed. The results show that under the same condensation temperature of 40 °C and evaporation temperature of ?35 °C, R124-DMAC/R744 exhibits excellent performance with a coefficient of performance of 2.864. It is an ideal working pair, and the annual total cost of the system is 15 150.14 USD. |
| Key words: cascade refrigeration cycle waste heat recovery refrigerant |
