Performance and application of combined system of liquid desiccant and R718 centrifugal heat pump

Hajime Yabase, Seiichi Yamaguchi, Kiyoshi Saito, Hiroshi Hasuike, Hayato Sakamoto, Satoru Matsumoto, Masatoshi Harada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The air-conditioning system for buildings and facilities is required that the room temperature and the humidity are kept in a predetermined range for comfortable air-conditioning. For achieving the above only by a heat pump, the room condition should be heated till the preset temperature after cooling till the temperature from which the request humidity is obtained, and this operation is inefficient. To overcome such inefficiency, separation of latent heat and sensible heat has been proposed. This is a two-step process in which temperature and humidity are adjusted separately in two steps by combining desiccant dehumidifier and heat pump. Theoretically, the system is known to be effective in reducing energy consumption, but in practical application, this technology can be further improved. In this research, we combined the liquid desiccant equipment which can perform low temperature regeneration and R718 centrifugal heat pump suitable for high efficiency for this application. Based on this concept, we have developed a highly efficient air-conditioning system by improving element equipment and optimizing operating conditions. The performance of this system is reported here.

    Original languageEnglish
    Title of host publication10th International Meeting of Advances in Thermofluids, IMAT 2018 - Smart City
    Subtitle of host publicationAdvances in Thermofluid Technology in Tropical Urban Development
    EditorsArdiyansyah Yatim, Nasruddin, Muhammad Arif Budiyanto, Nyayu Aisyah, Muhamad Idrus Alhamid
    PublisherAmerican Institute of Physics Inc.
    Volume2062
    ISBN (Electronic)9780735417908
    DOIs
    Publication statusPublished - 2019 Jan 25
    Event10th International Meeting of Advances in Thermofluids - Smart City: Advances in Thermofluid Technology in Tropical Urban Development, IMAT 2018 - Kuta, Bali, Indonesia
    Duration: 2018 Nov 162018 Nov 17

    Other

    Other10th International Meeting of Advances in Thermofluids - Smart City: Advances in Thermofluid Technology in Tropical Urban Development, IMAT 2018
    CountryIndonesia
    CityKuta, Bali
    Period18/11/1618/11/17

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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  • Cite this

    Yabase, H., Yamaguchi, S., Saito, K., Hasuike, H., Sakamoto, H., Matsumoto, S., & Harada, M. (2019). Performance and application of combined system of liquid desiccant and R718 centrifugal heat pump. In A. Yatim, Nasruddin, M. A. Budiyanto, N. Aisyah, & M. I. Alhamid (Eds.), 10th International Meeting of Advances in Thermofluids, IMAT 2018 - Smart City: Advances in Thermofluid Technology in Tropical Urban Development (Vol. 2062). [020060] American Institute of Physics Inc.. https://doi.org/10.1063/1.5086607