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Techno-economic analysis of a PV/T waste heat–driven compound ejector-heat pump for simultaneous data centre cooling and district heating using low global warming potential refrigerants

Author

Listed:
  • Ali Khalid Shaker Al-Sayyab

    (Universitat Jaume I
    Southern Technical University)

  • Joaquín Navarro-Esbrí

    (Universitat Jaume I)

  • Angel Barragán-Cervera

    (Universitat Jaume I)

  • Adrián Mota-Babiloni

    (Universitat Jaume I)

Abstract

A comprehensive techno-economic evaluation is evaluated based on an innovative compound ejector-heat pump system with PV/T (photovoltaic thermal) waste heat-driven. The aim of the system is simultaneous data centre cooling and waste heat recovery for district heating to reduce residential greenhouse gas emissions. The new system avoids the ejector pump by combining PV/T waste heat with an evaporative-condenser as an ejector driving force, considering several low global warming potential alternatives to R134a. The simulation indicates that the proposed system presents a remarkable difference in all investigated refrigerants’ overall system coefficient of performance (COP). Particularly, R515B presents the highest increase in COP, 54% and 49% in cooling and heating modes, respectively. It also provides the highest electricity consumption reduction, 84.1 MWh yearly. Moreover, the system improves the data centre power usage effectiveness (PUE) index from 10 to 19%. In financial terms, the shortest payback period (6.3 years) is obtained with R515B, followed by R515A and R1234ze(E).

Suggested Citation

  • Ali Khalid Shaker Al-Sayyab & Joaquín Navarro-Esbrí & Angel Barragán-Cervera & Adrián Mota-Babiloni, 2022. "Techno-economic analysis of a PV/T waste heat–driven compound ejector-heat pump for simultaneous data centre cooling and district heating using low global warming potential refrigerants," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 27(7), pages 1-24, October.
    • Handle: RePEc:spr:masfgc:v:27:y:2022:i:7:d:10.1007_s11027-022-10017-6
    DOI: 10.1007/s11027-022-10017-6
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    References listed on IDEAS

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