Flow Maps in the Boiling Process in Domestic Refrigerators

Fernando Toapanta-Ramos, César Nieto-Londoño, Elizabeth Suquillo-Goméz, William Quitiaquez

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

    Abstract

    Forced flow convection boiling and flow patterns are analytically investigated in this study to determine the behaviour of R600a within domestic refrigeration systems when copper oxide nanoparticles are added or not to this refrigerant. The flow maps are analysed, for this, the mass flows and the heat flows are of great importance since according to the numerical value of each of these the region where the flow will be found during the boiling process is established. Flow maps are presented using established correlations for halogenated refrigerants or zeotropic mixtures in the forced convection boiling process. The results showed that the heat transfer coefficient increased in mass flow while it decreased with increasing quality. On the other hand, when metallic nanoparticles are used, the heat transfer increases while maintaining the mass flow. In the same way, R600a has greater heat transfer when adding nanoparticles and decreases when oil is added, this is noticeable in the interface between intermittent and annular flow. Therefore, adding nanoparticles makes nanorefrigerants more convective compared to base fluids. All this generates an improvement in domestic refrigeration, despite having a flammable refrigerant (R600a).

    Original languageEnglish
    Title of host publicationCommunication, Smart Technologies and Innovation for Society - Proceedings of CITIS 2021
    EditorsÁlvaro Rocha, Paulo Carlos López-López, Juan Pablo Salgado-Guerrero
    PublisherSpringer Science and Business Media Deutschland GmbH
    Pages419-432
    Number of pages14
    ISBN (Print)9789811641251
    DOIs
    StatePublished - 2022
    Event7th International Conference on Science, Technology and Innovation for Society, CITIS 2021 - Virtual, Online
    Duration: 26 May 202128 May 2021

    Publication series

    NameSmart Innovation, Systems and Technologies
    Volume252
    ISSN (Print)2190-3018
    ISSN (Electronic)2190-3026

    Conference

    Conference7th International Conference on Science, Technology and Innovation for Society, CITIS 2021
    CityVirtual, Online
    Period26/05/2128/05/21

    Bibliographical note

    Funding Information:
    The authors of this research thank the mechanical engineering career of the Salesian Polytechnic University, the Research Group on Renewable Energies and Mechanical Implementation of SMEs GIERIMP, the Branch ASHRAE UPS-QUITO and the Universidad Pontificia Bolivariana, Medell?n-Colombia, for their generous contributions in this study.

    Publisher Copyright:
    © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

    Keywords

    • Flow Maps
    • R600a
    • Refrigerator domestic

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