Thermodynamic performance of a hybrid air cycle refrigeration system using a desiccant rotor

Kyudae Hwang, Chan Ho Song, Sung Ki Kim, Kiyoshi Saito, Sunao Kawai

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Due to the concern on global warming, the demand for a system using natural refrigerant is increasing and many researches have been devoted to develop systems with natural refrigerants. Among natural refrigerant systems, an air cycle system has emerged as one of alternatives of Freon gas system due to environmentally friendly feature in spite of the inherent low efficiency. To overcome the technical barrier, this study proposed combination of multiple systems as a hybrid cycle to achieve higher efficiency of an air cycle system. The hybrid air cycle adopts a humidity control units such as an adsorber and a desorber to obtain the cooling effect from latent heat as well as sensible heat. To investigate the efficacy of the hybrid air cycle, the cooling performance of a hybrid air cycle is investigated analytically and experimentally. From the simulation result, it is found that COP of the hybrid air cycle is two times higher than that of the conventional air cycle. The experiments are conducted on the performance of the desiccant system according to the rotation speed in the system and displayed the feasibility of the key element in the hybrid air cycle system. From the results, it is shown that the system efficiency can be enhanced by utilization of the exhausted heat through the ambient heat exchanger with advantage of controlling the humidity by the desiccant rotor.

    Original languageEnglish
    Pages (from-to)359-367
    Number of pages9
    JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
    Volume49
    Issue number3
    DOIs
    Publication statusPublished - 2013 Mar

    Fingerprint

    Hygroscopic Agents
    desiccants
    Refrigeration
    rotors
    Rotors
    Thermodynamics
    thermodynamics
    cycles
    air
    Air
    Refrigerants
    refrigerants
    humidity
    Chlorofluorocarbons
    Humidity control
    Cooling
    cooling
    freon
    heat
    Latent heat

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Fluid Flow and Transfer Processes

    Cite this

    Thermodynamic performance of a hybrid air cycle refrigeration system using a desiccant rotor. / Hwang, Kyudae; Song, Chan Ho; Kim, Sung Ki; Saito, Kiyoshi; Kawai, Sunao.

    In: Heat and Mass Transfer/Waerme- und Stoffuebertragung, Vol. 49, No. 3, 03.2013, p. 359-367.

    Research output: Contribution to journalArticle

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