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Enhancing the Energy Efficiency—COP of the Heat Pump Heating System by Energy Optimization and a Case Study

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  • Arpad Nyers

    (Faculty of Engineering and Information Technology, University of Pécs, Boszorkány utca 2, 7624 Pécs, Hungary)

  • Jozsef Nyers

    (Doctoral School of Applied Informatics and Applied Mathematics, Óbuda University, Bécsi út 96, 1034 Budapest, Hungary)

Abstract

This article deals with the degrees of freedom and possible optimums, specifically with the energy optimums of the heat pump heating system. The authors developed an multi objective optimization procedure that allows for the determination of the optimal motor power for the circulation and well pumps in order to achieve the maximum C O P . Upon selecting the type and size of the water-to-water heat pump, based on the heating demand of the buildings, the proper power of the circulation and well pumps must be determined. There are several procedures used for determining the pump’s power. However, none of those methods ensures the optimum power, i.e., the maximum coefficient of performance, C O P of the heating system. In this study, a multi objective analytical-numerical dimensioning procedure was developed for the determination of the optimal mass flow rate of warm and well water. Based on the flow rate values, the optimum power of the circulation and well pumps can be calculated. Due to the wide scope of the topic, the application of the optimization procedure is presented in a case study, but only for determining the optimum power of the circulation pump. The validity of the procedure was confirmed by measurements. The results obtained with the optimization showed that through the energy optimization of the circulation pump power, the C O P of the system increased by 5.34%.

Suggested Citation

  • Arpad Nyers & Jozsef Nyers, 2023. "Enhancing the Energy Efficiency—COP of the Heat Pump Heating System by Energy Optimization and a Case Study," Energies, MDPI, vol. 16(7), pages 1-20, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:7:p:2981-:d:1106666
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    References listed on IDEAS

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    4. Edwards, K.C. & Finn, D.P., 2015. "Generalised water flow rate control strategy for optimal part load operation of ground source heat pump systems," Applied Energy, Elsevier, vol. 150(C), pages 50-60.
    5. Hosseinnia, Seyed Mojtaba & Sorin, Mikhail, 2022. "Energy targeting approach for optimum solar assisted ground source heat pump integration in buildings," Energy, Elsevier, vol. 248(C).
    6. Nordgård-Hansen, Ellen & Kishor, Nand & Midttømme, Kirsti & Risinggård, Vetle Kjær & Kocbach, Jan, 2022. "Case study on optimal design and operation of detached house energy system: Solar, battery, and ground source heat pump," Applied Energy, Elsevier, vol. 308(C).
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    Cited by:

    1. Tamás Storcz & Géza Várady & István Kistelegdi & Zsolt Ercsey, 2023. "Regression Models and Shape Descriptors for Building Energy Demand and Comfort Estimation," Energies, MDPI, vol. 16(16), pages 1-20, August.

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