Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E)

Sho Fukuda, Chieko Kondou, Nobuo Takata, Shigeru Koyama

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

    2 Citations (Scopus)

    Abstract

    Cycle performance of a vapor compression loop using low GWP refrigerant mixtures are experimentally assessed in this study. The coefficient of performance (COP) of typical heating and cooling mode of air conditioning conditions are measured for R-32/1234ze(E) and R-744/32/1234ze(E). The COP of R-32/1234ze(E)(43/57 mass%) and R-744/32/1234ze(E) (4/43/53 mass%) of GWP = 300 slightly excesses that of the conventional refrigerant R410A. The COP of R-32/1234ze(E)(28/72 mass%) and R-744/32/1234ze(E) (9/29/62 mass%) of GWP = 200 is however lower than that of R410A. The characteristics in COP are explained by the analysis on irreversible loss. The insufficiency of volumetric capacity in the mixtures of GWP = 200 significantly increases the loss related to pressure drop. The less subcooling interfered with the large temperature glide of mixtures cause large throttling loss. The unmatched temperature glide to the temperature change of heat source and/or heat sink fluid increases the irreversible loss in heat exchangers.

    Original languageEnglish
    Title of host publicationACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning
    PublisherSociety of Air-conditioning and Refrigerating Engineers of Korea, SAREK
    Publication statusPublished - 2014
    Event7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014 - Jeju Island, Korea, Republic of
    Duration: May 18 2014May 21 2014

    Other

    Other7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014
    CountryKorea, Republic of
    CityJeju Island
    Period5/18/145/21/14

    Fingerprint

    refrigerants
    Refrigerants
    cycles
    coefficients
    throttling
    Heat sinks
    air conditioning
    Air conditioning
    Temperature
    Pressure drop
    Heat exchangers
    heat sinks
    heat exchangers
    heat sources
    pressure drop
    Compaction
    Vapors
    temperature
    Cooling
    Heating

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering
    • Condensed Matter Physics
    • Control and Systems Engineering
    • Mechanical Engineering

    Cite this

    Fukuda, S., Kondou, C., Takata, N., & Koyama, S. (2014). Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E). In ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning Society of Air-conditioning and Refrigerating Engineers of Korea, SAREK.

    Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E). / Fukuda, Sho; Kondou, Chieko; Takata, Nobuo; Koyama, Shigeru.

    ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning. Society of Air-conditioning and Refrigerating Engineers of Korea, SAREK, 2014.

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

    Fukuda, S, Kondou, C, Takata, N & Koyama, S 2014, Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E). in ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning. Society of Air-conditioning and Refrigerating Engineers of Korea, SAREK, 7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014, Jeju Island, Korea, Republic of, 5/18/14.
    Fukuda S, Kondou C, Takata N, Koyama S. Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E). In ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning. Society of Air-conditioning and Refrigerating Engineers of Korea, SAREK. 2014
    Fukuda, Sho ; Kondou, Chieko ; Takata, Nobuo ; Koyama, Shigeru. / Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E). ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning. Society of Air-conditioning and Refrigerating Engineers of Korea, SAREK, 2014.
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    abstract = "Cycle performance of a vapor compression loop using low GWP refrigerant mixtures are experimentally assessed in this study. The coefficient of performance (COP) of typical heating and cooling mode of air conditioning conditions are measured for R-32/1234ze(E) and R-744/32/1234ze(E). The COP of R-32/1234ze(E)(43/57 mass{\%}) and R-744/32/1234ze(E) (4/43/53 mass{\%}) of GWP = 300 slightly excesses that of the conventional refrigerant R410A. The COP of R-32/1234ze(E)(28/72 mass{\%}) and R-744/32/1234ze(E) (9/29/62 mass{\%}) of GWP = 200 is however lower than that of R410A. The characteristics in COP are explained by the analysis on irreversible loss. The insufficiency of volumetric capacity in the mixtures of GWP = 200 significantly increases the loss related to pressure drop. The less subcooling interfered with the large temperature glide of mixtures cause large throttling loss. The unmatched temperature glide to the temperature change of heat source and/or heat sink fluid increases the irreversible loss in heat exchangers.",
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    AU - Kondou, Chieko

    AU - Takata, Nobuo

    AU - Koyama, Shigeru

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    N2 - Cycle performance of a vapor compression loop using low GWP refrigerant mixtures are experimentally assessed in this study. The coefficient of performance (COP) of typical heating and cooling mode of air conditioning conditions are measured for R-32/1234ze(E) and R-744/32/1234ze(E). The COP of R-32/1234ze(E)(43/57 mass%) and R-744/32/1234ze(E) (4/43/53 mass%) of GWP = 300 slightly excesses that of the conventional refrigerant R410A. The COP of R-32/1234ze(E)(28/72 mass%) and R-744/32/1234ze(E) (9/29/62 mass%) of GWP = 200 is however lower than that of R410A. The characteristics in COP are explained by the analysis on irreversible loss. The insufficiency of volumetric capacity in the mixtures of GWP = 200 significantly increases the loss related to pressure drop. The less subcooling interfered with the large temperature glide of mixtures cause large throttling loss. The unmatched temperature glide to the temperature change of heat source and/or heat sink fluid increases the irreversible loss in heat exchangers.

    AB - Cycle performance of a vapor compression loop using low GWP refrigerant mixtures are experimentally assessed in this study. The coefficient of performance (COP) of typical heating and cooling mode of air conditioning conditions are measured for R-32/1234ze(E) and R-744/32/1234ze(E). The COP of R-32/1234ze(E)(43/57 mass%) and R-744/32/1234ze(E) (4/43/53 mass%) of GWP = 300 slightly excesses that of the conventional refrigerant R410A. The COP of R-32/1234ze(E)(28/72 mass%) and R-744/32/1234ze(E) (9/29/62 mass%) of GWP = 200 is however lower than that of R410A. The characteristics in COP are explained by the analysis on irreversible loss. The insufficiency of volumetric capacity in the mixtures of GWP = 200 significantly increases the loss related to pressure drop. The less subcooling interfered with the large temperature glide of mixtures cause large throttling loss. The unmatched temperature glide to the temperature change of heat source and/or heat sink fluid increases the irreversible loss in heat exchangers.

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