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A theoretical study of the effects of different heating loads on the exergy performance of water-based and air-based space heating systems in buildings

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  • Kazanci, Ongun B.
  • Shukuya, Masanori

Abstract

The present study investigated theoretically the exergy performance of floor heating, radiators, and air heating under three different space heating loads of 10, 30 and 50 W/m2. The effects of different supply and return water temperatures were studied for the radiators, and the effects of different supply air temperatures were studied for the air heating system. All systems were assumed to be connected to a boiler. The floor heating system was further analyzed assuming an air-to-water heat pump, and a ground-source heat pump.

Suggested Citation

  • Kazanci, Ongun B. & Shukuya, Masanori, 2022. "A theoretical study of the effects of different heating loads on the exergy performance of water-based and air-based space heating systems in buildings," Energy, Elsevier, vol. 238(PC).
    • Handle: RePEc:eee:energy:v:238:y:2022:i:pc:s036054422102257x
    DOI: 10.1016/j.energy.2021.122009
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    References listed on IDEAS

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    1. Lohani, S.P. & Schmidt, D., 2010. "Comparison of energy and exergy analysis of fossil plant, ground and air source heat pump building heating system," Renewable Energy, Elsevier, vol. 35(6), pages 1275-1282.
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    4. Lohani, S.P., 2010. "Energy and exergy analysis of fossil plant and heat pump building heating system at two different dead-state temperatures," Energy, Elsevier, vol. 35(8), pages 3323-3331.
    5. Razmara, M. & Maasoumy, M. & Shahbakhti, M. & Robinett, R.D., 2015. "Optimal exergy control of building HVAC system," Applied Energy, Elsevier, vol. 156(C), pages 555-565.
    6. Du, Zhimin & Jin, Xinqiao & Fan, Bo, 2015. "Evaluation of operation and control in HVAC (heating, ventilation and air conditioning) system using exergy analysis method," Energy, Elsevier, vol. 89(C), pages 372-381.
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    Cited by:

    1. Kilkis, Birol, 2022. "Net-zero buildings, what are they and what they should be?," Energy, Elsevier, vol. 256(C).
    2. Luo, Lulin & Lu, Lidi & Shen, Xuelian & Chen, Jinhua & Pan, Yang & Wang, Yuchen & Luo, Qing, 2023. "Energy, exergy and economic analysis of an integrated ground source heat pump and anaerobic digestion system for Co-generation of heating, cooling and biogas," Energy, Elsevier, vol. 282(C).
    3. 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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