METHOD OF FORMING REFRIGERANT SYSTEMS
    64.
    发明公开

    公开(公告)号:US20240278362A1

    公开(公告)日:2024-08-22

    申请号:US18444805

    申请日:2024-02-19

    CPC classification number: B23P15/26 F25B45/00 F25B1/00

    Abstract: Methods for forming an improved refrigeration system comprising: (a) providing an existing refrigeration circuit comprising an existing refrigerant having a GWP of greater than 1200, a plurality of evaporators in a refrigerated space containing products accessible to consumers, a rack of compressors and at least one condenser located remotely from the areas accessible to consumers; (b) disconnecting the fluid connection between the existing liquid refrigerant from said condenser and said evaporators; (c) disconnecting the fluid connection between said existing refrigerant vapor from said evaporators in step (b) and said suction of said compressor or compressor rack; and (d) establishing a new first refrigeration circuit comprising the compressor rack and said condenser; (e) establishing a new second refrigeration circuit comprising at least one of the evaporators by steps comprising: (i) removing the existing refrigerant from the evaporators and at least a portion of said conduits which have been disconnected in steps (b) and (c); and (ii) replacing the removed existing refrigerant with a second refrigerant comprising: (1) from about 30 to about 70% by weight of CF3I; (2) from about 9% to about 58% by weight of HFO-1234yf; (3) from 1% to about 21.5% by weight of HFC-32; and optionally (4) from 0.5% to 4% by weight of HFC-125, CO2 or a combination of HFC-125 and CO2.

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