Alternative energy storage using a domestic hot water solar-assisted heat pump with PV collector/evaporator and HC refrigerant

C. A. Isaza-Roldan, William Quitiaquez, César Nieto-Londoño, Luis Toapanta, Isaac Simbaña

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Scopus citations

    Abstract

    This work presents the thermodynamic analysis of a direct-expansion solar-assisted heat pump to provide domestic hot water. An aluminum bare collector/evaporator and a compressor that uses refrigerant R600a as working fluid compose the system. Boiling and condensation temperatures are -8 and 54.4 °C, respectively. The system test is conducted under different weather conditions (i.e. rainy, cloudy and clear day), obtaining a variation of the coefficient of performance between 4.07 and 6.72 for an average solar radiation in the range of 451.6 and 721.5 W·m-2. The water final temperature attains a value between 47.7 and 58.6 °C. The system works with solar energy, both thermal and photovoltaic, to replace conventional energy sources conducing to decrease the carbon reduction factor (CFC) in 89.5 % being lower than the 1977.2 kg of annual CO2 emissions produced by an electric shower.

    Original languageEnglish
    Title of host publicationICR 2019 - 25th IIR International Congress of Refrigeration
    EditorsVasile Minea
    PublisherInternational Institute of Refrigeration
    Pages4827-4839
    Number of pages13
    ISBN (Electronic)9782362150357
    DOIs
    StatePublished - 2019
    Event25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada
    Duration: 24 Aug 201930 Aug 2019

    Publication series

    NameRefrigeration Science and Technology
    Volume2019-August
    ISSN (Print)0151-1637

    Conference

    Conference25th IIR International Congress of Refrigeration, ICR 2019
    Country/TerritoryCanada
    CityMontreal
    Period24/08/1930/08/19

    Bibliographical note

    Funding Information:
    The authors want to express a deep gratitude to the Renewable Energies and Mechanical Implementation of SMEs Research Group of the Universidad Politécnica Salesiana in Ecuador and the Energy and Thermodynamic Research Group of the Universidad Pontificia Bolivariana in Colombia, for supporting the accomplishment of this research.

    Publisher Copyright:
    © 2019 International Institute of Refrigeration. All rights reserved.

    Keywords

    • Direct Expansion
    • Heat Pump
    • Solar Energy

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