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Design and Parametric Investigation of an Efficient Heating System, an Effort to Obtain a Higher Seasonal Performance Factor

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  • Trond Thorgeir Harsem

    (Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden
    Norconsult AS, 1338 Sandvika, Norway)

  • Behrouz Nourozi

    (Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden)

  • Amirmohammad Behzadi

    (Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden)

  • Sasan Sadrizadeh

    (Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden)

Abstract

The present work introduces an innovative yet feasible heating system consisting of a ground source heat pump, borehole thermal energy storage, an auxiliary heater, radiators, and ventilation coils. The concept is developed by designing a new piping configuration monitored by a smart control system to reduce the return flow temperature and increase the temperature differential between the supply and return flows. The radiators and ventilation heating circuits are connected in series to provide the heat loads with the same demand. The investigation of the proposed model is performed through developed Python code considering a case study hospital located in Norway. The article presents, after validation of the primary heating system installed in the hospital, a parametric investigation to evaluate the effect of main operational parameters on the performance metrics of both the heat pump and the total system. According to the results, the evaporator temperature is a significant parameter that considerably impacts the system performance. The parametric study findings show that the heat pumps with a thermal capacity of 400 kW and 600 kW lead to the highest heat pump and total seasonal performance factors, respectively. It is also observed that increasing the heat pump capacity does not affect the performance indicators when the condensation temperature is 40 °C and the heat recovery is 50%. Moreover, choosing a heat pump with a smaller capacity at the heat recovery of 75% (or higher) would be an appropriate option because the seasonal performance values are not varied by changing the heat pump capacity. The results reveal that reducing return temperature under a proper parameters selection results in substantially higher seasonal performance factors of the heat pump and total system. These outcomes are in-line with the United Nations sustainable development goals including Sustainable Cities and Communities.

Suggested Citation

  • Trond Thorgeir Harsem & Behrouz Nourozi & Amirmohammad Behzadi & Sasan Sadrizadeh, 2021. "Design and Parametric Investigation of an Efficient Heating System, an Effort to Obtain a Higher Seasonal Performance Factor," Energies, MDPI, vol. 14(24), pages 1-13, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:24:p:8475-:d:703213
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    References listed on IDEAS

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    Cited by:

    1. Fredrik Skaug Fadnes & Reyhaneh Banihabib & Mohsen Assadi, 2023. "Using Artificial Neural Networks to Gather Intelligence on a Fully Operational Heat Pump System in an Existing Building Cluster," Energies, MDPI, vol. 16(9), pages 1-33, May.
    2. Ahmad Taki & Bilal Alsheglawi, 2022. "Toward Energy-Efficient Houses Considering Social Cultural Needs in Bahrain: A New Framework Approach," Sustainability, MDPI, vol. 14(11), pages 1-30, June.
    3. Stylianos A. Papazis, 2022. "Integrated Economic Optimization of Hybrid Thermosolar Concentrating System Based on Exact Mathematical Method," Energies, MDPI, vol. 15(19), pages 1-22, September.
    4. Liu, Xin & Zuo, Yuning & Yin, Zekai & Liang, Chuanzhi & Feng, Guohui & Yang, Xiaodan, 2023. "Research on an evaluation system of the application effect of ground source heat pump systems for green buildings in China," Energy, Elsevier, vol. 262(PA).
    5. Piotr Michalak, 2023. "Simulation and Experimental Study on the Use of Ventilation Air for Space Heating of a Room in a Low-Energy Building," Energies, MDPI, vol. 16(8), pages 1-17, April.

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