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Energy and exergy analysis and thermo-economic optimization of the ground source heat pump integrated with radiant wall panel and fan-coil unit with floor heating or radiator

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  • Kayaci, Nurullah

Abstract

Current study is aimed at making the most appropriate design considering the dynamic energy, exergy and economic analysis of Ground Source Heat Pumps (GSHP). The energy required to heat and to cool a 200 m2 office in Istanbul is determined, and based on these data, the entering and leaving water and soil temperatures of horizontal Ground Heat Exchanger (GHE) are obtained numerically for a ten-year period with realistic boundary conditions using meteorological data. The results obtained from the numerical study are confirmed by GHE experimental setup built in Yıldız Technical University. The variations of COP, second-law efficiency and exergy destruction of each component of GSHP at both seasons of the first, fifth and tenth years are obtained for Radiant Wall Panel Unit (RW-PU), Floor Heating + Fan-Coil Unit (FH-FCU) and Radiator + Fan-Coil Unit (R-FCU) systems. At the end of the 10-year dynamic simulation period of the GSHP system, the average values of COP and second law efficiency for RW-PU, FH-FCU and R-FCU are found as 4.01, 3.37, 3.01, and 39.29%, 38.04%, 36.63%, respectively. Furthermore, considering the initial investment and operational costs of RW-PU, FH-FCU and R-FCU systems integrated into the GSHP system, an objective function is defined as an optimization parameter.

Suggested Citation

  • Kayaci, Nurullah, 2020. "Energy and exergy analysis and thermo-economic optimization of the ground source heat pump integrated with radiant wall panel and fan-coil unit with floor heating or radiator," Renewable Energy, Elsevier, vol. 160(C), pages 333-349.
    • Handle: RePEc:eee:renene:v:160:y:2020:i:c:p:333-349
    DOI: 10.1016/j.renene.2020.06.150
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    2. Bulmez, A.M. & Ciofoaia, V. & Năstase, G. & Dragomir, G. & Brezeanu, A.I. & Şerban, A., 2022. "An experimental work on the performance of a solar-assisted ground-coupled heat pump using a horizontal ground heat exchanger," Renewable Energy, Elsevier, vol. 183(C), pages 849-865.
    3. Seker, Ufuk Emre & Efe, Sukran, 2023. "Comparative economic analysis of air conditioning system with groundwater source heat pump in general-purpose buildings: A case study for Kayseri," Renewable Energy, Elsevier, vol. 204(C), pages 372-381.
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    5. Sun, Hongli & Duan, Mengfan & Yang, Zixu & Ding, Pei & Wu, Yifan & Lin, Borong, 2023. "Evaluation of the intermittent performance of heating terminals based on exergy analysis: Discriminate the impacts of heat and electricity input," Applied Energy, Elsevier, vol. 346(C).

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