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25 September 2023 Performance comparison of single-stage/cascade heat pump for waste heat recovery of printing-dyeing industry
Danhong Gu, Yurui Yang, Yude Wu, Wei Yan, Bin Hu, Lixin Shi, Chaolun Shen, Meng Chen, Can Zheng, Yizhen Cai, Wen Li
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Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 127880D (2023) https://doi.org/10.1117/12.3004469
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia
Abstract
Aiming at solving the problem integrating the low-grade heat recovery from waste water and the high-temperature hot water demand for the printing and dyeing industry, the single-stage heat pump model and cascade heat pump system model are built and analysed. Two refrigerants, including R134a and R152a, are selected separately as the working fluids of single-stage heat pump. Meanwhile, these refrigerants are used in the cascade heat pump for two joint systems. For different heat pump systems, the performance parameters are calculated and compared through the simulation of thermodynamic process, with the help of EES and MATLAB. The results show that COP of cascade heat pump is generally greater than that of single-stage heat pump system, for various evaporation temperature and condensation temperature. For the heating power and exergy, the performance of the cascade heat pump is between the single-stage heat pumps with corresponding different refrigerants chosen. Considering the compression process of heat pump system, the compression ratio in the single-stage heat pump cycle is far greater than that of the corresponding cascade heat pump. In order to ensure the practicability and safety of the system, the performance of the cascade heat pump is better.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Danhong Gu, Yurui Yang, Yude Wu, Wei Yan, Bin Hu, Lixin Shi, Chaolun Shen, Meng Chen, Can Zheng, Yizhen Cai, and Wen Li "Performance comparison of single-stage/cascade heat pump for waste heat recovery of printing-dyeing industry", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 127880D (25 September 2023); https://doi.org/10.1117/12.3004469
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KEYWORDS
Industry
Printing
Thermodynamics
Systems modeling
Industrial applications
Temperature metrology
MATLAB
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