2025 - Sustainable Industrial Processing Summit
SIPS2025 Volume 10. Intl. Symp on Energy, Carbon, Battery, Biochar and Agroforestry
| Editors: | F. Kongoli, S.M. Atnaw, H. Dodds, T. Turna, J. Antrekowitsch, G. Hanke, K. Aifantis, Z. Bakenov, C. Capiglia, V. Kumar, A.U.H. Qurashi, A. Tressaud, R. Yazami, M. Giorcelli |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2025 |
| Pages: | 316 pages |
| ISBN: | 978-1-998384-56-3 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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A STUDY ON PERFORMANCE IMPROVEMENT OF ENGINE-DRIVEN HEAT PUMP USING LOW GWP REFRIGERANT THROUGH WASTE HEAT UTILIZATION UNDER LOW TEMPERATURE CONDITION
Hyun Joon Chung1;1HOSEO UNIVERSITY, Asan, South Korea;
Type of Paper: Regular
Id Paper: 244
Topic: 17
Abstract:
As interest in environmental issues grows, regulations on the Global Warming Potential (GWP) of refrigerants are becoming increasingly stringent [1], driving the demand for Low GWP alternatives. [2] Engine-driven heat pumps are also gaining attention as an effective technology to mitigate winter power peaks due to their lower electricity consumption compared to electricity-driven heat pumps. [3]
This study analyzes the performance improvement of an engine-driven heat pump using low-GWP refrigerants by adopting waste heat recovery mode and evaluates the applicability of alternative refrigerants. A cycle simulation program was developed to obtain the performance characteristic data of the engine-driven heat pump. R32, R452B and R466A were selected as Low GWP refrigerants for comparison with R410A, which was used as the baseline refrigerant.
The design parameters of engine-driven heat pump were determined to deliver the same heating capacity at identical evaporating and condensing temperature conditions without waste heat utilization. Performance simulations were conducted by varying the amount of waste heat recovered from the engine, while maintaining a constant heating capacity.
As the amount of waste heat increased, compressor power consumption decreased. The power consumption decrease was most significant in the order of R466A, R452B, R410A,and R32A. Furthermore, with 10 kW of waste heat, the coefficient of performance (COP) of engine driven heat pumps were improved by 1.2% and 2.3% using R452B and R466A compared to the COP using R410A. On the other hand, the COP using R32 was decreased by 2.6%.