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Energy Savings of Simultaneous Heating and Cooling System According to Indoor Set Temperature Changes in the Comfort Range

Author

Listed:
  • Dae-Uk Shin

    (Department of Architecture & Building Engineering, Kunsan National University, Gunsan 54150, Korea)

  • Chang-Ho Jeong

    (Division of Architecture for Urban Planning & Real Estate Development, The University of Suwon, Hwaseong 18323, Korea)

Abstract

This study was conducted to derive the amount of energy savings when applying the method of making the load similar by changing the set temperature of the room in the building to which the simultaneous heating and cooling (SHC) system is applied. Energy savings were derived through theoretical analysis and comparisons through static simulations were performed to verify the proposed method. As a result, the energy savings are proportional to the energy limit that can be additionally input to the SHC and is proportional to the ratio of the coefficient of performance (COP) difference between the SHC and auxiliary heat source and the auxiliary heat source COP. That is, to increase the amount of energy savings, the maximum possible energy should be input for the SHC, or the SHC COP must be greater than the auxiliary heat source COP. In addition, comfort can be achieved stably by varying the set room temperature in a room with a small load. When a heat storage tank is installed or changing the indoor set temperature of both the hot and cold zones in real time by predicting the indoor load is possible, more energy can be saved.

Suggested Citation

  • Dae-Uk Shin & Chang-Ho Jeong, 2021. "Energy Savings of Simultaneous Heating and Cooling System According to Indoor Set Temperature Changes in the Comfort Range," Energies, MDPI, vol. 14(22), pages 1-19, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7691-:d:681069
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    References listed on IDEAS

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    1. Byrne, Paul & Miriel, Jacques & Lenat, Yves, 2011. "Experimental study of an air-source heat pump for simultaneous heating and cooling – Part 2: Dynamic behaviour and two-phase thermosiphon defrosting technique," Applied Energy, Elsevier, vol. 88(9), pages 3072-3078.
    2. Byrne, Paul & Miriel, Jacques & Lenat, Yves, 2011. "Experimental study of an air-source heat pump for simultaneous heating and cooling - Part 1: Basic concepts and performance verification," Applied Energy, Elsevier, vol. 88(5), pages 1841-1847, May.
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    Cited by:

    1. Paul Byrne, 2022. "Research Summary and Literature Review on Modelling and Simulation of Heat Pumps for Simultaneous Heating and Cooling for Buildings," Energies, MDPI, vol. 15(10), pages 1-43, May.
    2. Filip Bartyzel & Tomasz Wegiel & Magdalena Kozień-Woźniak & Marek Czamara, 2022. "Numerical Simulation of Operating Parameters of the Ground Source Heat Pump," Energies, MDPI, vol. 15(1), pages 1-13, January.
    3. Paul Byrne, 2022. "Modelling and Simulation of Heat Pumps for Simultaneous Heating and Cooling, a Special Issue," Energies, MDPI, vol. 15(16), pages 1-2, August.

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