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Heat pump control method based on direct measurement of evaporation pressure to improve energy efficiency and indoor air temperature stability at a low cooling load condition

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  • Park, Young Sung
  • Jeong, Ji Hwan
  • Ahn, Byoung Ha

Abstract

The control systems of conventional heat pumps have an input of refrigerant temperature at the evaporator outlet to maintain superheat at proper level. In order to develop a control method that can be used to achieve better indoor thermal comfort and energy efficiency at a low cooling load condition than the current control method, a new method of the evaporation pressure control based on the evaporator outlet pressure reading (EPCP) was developed. The changes in the stability of indoor air temperature and power consumption were measured while changing the compressor frequency in accordance with the new control method. Compared with the evaporation pressure control based on the evaporator outlet temperature reading, the EPCP control method appeared to improve the stability of room air temperature or occupant thermal comfort significantly.

Suggested Citation

  • Park, Young Sung & Jeong, Ji Hwan & Ahn, Byoung Ha, 2014. "Heat pump control method based on direct measurement of evaporation pressure to improve energy efficiency and indoor air temperature stability at a low cooling load condition," Applied Energy, Elsevier, vol. 132(C), pages 99-107.
    • Handle: RePEc:eee:appene:v:132:y:2014:i:c:p:99-107
    DOI: 10.1016/j.apenergy.2014.07.011
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Jianwu Xiong & Linlin Chen & Yin Zhang, 2023. "Building Energy Saving for Indoor Cooling and Heating: Mechanism and Comparison on Temperature Difference," Sustainability, MDPI, vol. 15(14), pages 1-20, July.
    2. Kofi Owura Amoabeng & Jong Min Choi, 2018. "Performance Analysis on the Optimum Control of a Calorimeter with a Heat Recovery Unit for a Heat Pump," Energies, MDPI, vol. 11(9), pages 1-20, August.
    3. Sim, Jaehoon & Lee, Hyoin & Jeong, Ji Hwan, 2021. "Optimal design of variable-path heat exchanger for energy efficiency improvement of air-source heat pump system," Applied Energy, Elsevier, vol. 290(C).
    4. Lim, Dae Kyu & Ahn, Byoung Ha & Jeong, Ji Hwan, 2018. "Method to control an air conditioner by directly measuring the relative humidity of indoor air to improve the comfort and energy efficiency," Applied Energy, Elsevier, vol. 215(C), pages 290-299.
    5. Poulet, P. & Outbib, R., 2015. "Energy production for dwellings by using hybrid systems based on heat pump variable input power," Applied Energy, Elsevier, vol. 147(C), pages 413-429.
    6. Kofi Owura Amoabeng & Kwang Ho Lee & Jong Min Choi, 2019. "Modeling and Simulation Performance Evaluation of a Proposed Calorimeter for Testing a Heat Pump System," Energies, MDPI, vol. 12(23), pages 1-22, December.
    7. Bianchi, Giuseppe & Cipollone, Roberto, 2015. "Theoretical modeling and experimental investigations for the improvement of the mechanical efficiency in sliding vane rotary compressors," Applied Energy, Elsevier, vol. 142(C), pages 95-107.
    8. Arun Shankar, Vishnu Kalaiselvan & Umashankar, Subramaniam & Paramasivam, Shanmugam & Hanigovszki, Norbert, 2016. "A comprehensive review on energy efficiency enhancement initiatives in centrifugal pumping system," Applied Energy, Elsevier, vol. 181(C), pages 495-513.
    9. Kim, Dongwoo & Chung, Hyun Joon & Jeon, Yongseok & Jang, Dong Soo & Kim, Yongchan, 2017. "Optimization of the injection-port geometries of a vapor injection scroll compressor based on SCOP under various climatic conditions," Energy, Elsevier, vol. 135(C), pages 442-454.

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