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Performance Optimization of Solar-Assisted Heat Pump System for Water Heating Applications

Author

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  • Chandan Swaroop Meena

    (CSIR—Central Building Research Institute, Roorkee 247667, India
    Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India)

  • Binju P Raj

    (CSIR—Central Building Research Institute, Roorkee 247667, India
    Thapar Institute of Engineering and Technology, Patiala 147001, India)

  • Lohit Saini

    (CSIR—Central Building Research Institute, Roorkee 247667, India
    Thapar Institute of Engineering and Technology, Patiala 147001, India)

  • Nehul Agarwal

    (CSIR—Central Building Research Institute, Roorkee 247667, India
    Thapar Institute of Engineering and Technology, Patiala 147001, India)

  • Aritra Ghosh

    (College of Engineering, Mathematics and Physical Sciences, Renewable Energy, University of Exeter, Penryn, Cornwall TR10 9FE, UK)

Abstract

The use of solar energy in water heating applications, such as in solar-assisted heat pump systems, has great benefits, such as reductions in heat transfer losses, control over incident solar heat, and generation of environmentally benign water heat. In the present study, we performed parametric optimization based on an experimental model of a solar-assisted heat pump system for water heating (SAHPSWH) in the context of colder climatic regions receiving minimal solar radiation. Various parameters were investigated, such as the different glazing arrangements, the distances between fluid-circulating tubes, and the absorber sheet arrangement. The results showed that double glazing was more efficient than single glazing, with average COP values of 3.37 and 2.69, respectively, and with similar heat gain rates. When the evaporator tube was soldered below the absorber plate, the COP was 1.19 times greater than when the tube was soldered above the absorber plate. We also analyzed whether the collector efficiency factor F′ has an inverse relationship with the tube distance and a direct relationship with the absorber plate thickness. Through this experimental study, we verified that the SAHPSWH is reliable if designed judiciously. This promising energy-saving system is particularly suitable for areas abundant in solar radiation, such as in India, where the needs for space conditioning and water heating are constant.

Suggested Citation

  • Chandan Swaroop Meena & Binju P Raj & Lohit Saini & Nehul Agarwal & Aritra Ghosh, 2021. "Performance Optimization of Solar-Assisted Heat Pump System for Water Heating Applications," Energies, MDPI, vol. 14(12), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:12:p:3534-:d:574655
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    References listed on IDEAS

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    Cited by:

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    3. Varun Pratap Singh & Siddharth Jain & Ashish Karn & Ashwani Kumar & Gaurav Dwivedi & Chandan Swaroop Meena & Nitesh Dutt & Aritra Ghosh, 2022. "Recent Developments and Advancements in Solar Air Heaters: A Detailed Review," Sustainability, MDPI, vol. 14(19), pages 1-55, September.
    4. Stephen Tangwe & Patrick Mukumba & Golden Makaka, 2023. "An Installed Hybrid Direct Expansion Solar Assisted Heat Pump Water Heater to Monitor and Modeled the Energy Factor of a University Students’ Accommodation," Energies, MDPI, vol. 16(3), pages 1-30, January.
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    6. Varun Pratap Singh & Siddharth Jain & Ashish Karn & Ashwani Kumar & Gaurav Dwivedi & Chandan Swaroop Meena & Raffaello Cozzolino, 2022. "Mathematical Modeling of Efficiency Evaluation of Double-Pass Parallel Flow Solar Air Heater," Sustainability, MDPI, vol. 14(17), pages 1-22, August.
    7. Zhang, Tianhu & Wang, Fuxi & Gao, Yi & Liu, Yuanjun & Guo, Qiang & Zhao, Qingxin, 2023. "Optimization of a solar-air source heat pump system in the high-cold and high-altitude area of China," Energy, Elsevier, vol. 268(C).
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