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Comparison of the performance of capacity controlled and conventional on/off controlled heat pumps

Author

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  • Tassou, S.A.
  • Marquand, C.J.
  • Wilson, D.R.

Abstract

One aspect of heat pump design which has received considerable attention recently is capacity control. In this paper, the performance of a capacity controlled heat pump has been compared with that of a conventional fixed speed system. It has been found that the capacity modulated system, with a speed reduction limitation of half the rated compressor speed, can offer more than 10 per cent improvement in energy utilisation efficiency over the conventional system. An optimised microprocessor controlled unit, using a compressor with a wider speed variation capability, can offer improvements in efficiency as high as 30 per cent compared with on/off controlled systems.

Suggested Citation

  • Tassou, S.A. & Marquand, C.J. & Wilson, D.R., 1983. "Comparison of the performance of capacity controlled and conventional on/off controlled heat pumps," Applied Energy, Elsevier, vol. 14(4), pages 241-256.
    • Handle: RePEc:eee:appene:v:14:y:1983:i:4:p:241-256
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    Cited by:

    1. Muhammad Abid & Neil Hewitt & Ming-Jun Huang & Christopher Wilson & Donal Cotter, 2021. "Domestic Retrofit Assessment of the Heat Pump System Considering the Impact of Heat Supply Temperature and Operating Mode of Control—A Case Study," Sustainability, MDPI, vol. 13(19), pages 1-26, September.
    2. 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.
    3. 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.
    4. Muhammad Abid & Neil Hewitt & Ming-Jun Huang & Christopher Wilson & Donal Cotter, 2021. "Performance Analysis of the Developed Air Source Heat Pump System at Low-to-Medium and High Supply Temperatures for Irish Housing Stock Heat Load Applications," Sustainability, MDPI, vol. 13(21), pages 1-31, October.

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