Vapor compression cycle device with multi-component working flui

Refrigeration – Processes – Employing diverse materials or particular material in...

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Details

62115, 62502, 237 2B, F25B 100

Patent

active

042839190

ABSTRACT:
A vapor compression cycle device includes a multi-component working fluid, a compressor, a condensing heat exchanger, a high-pressure accumulator and an evaporating heat exchanger assembly comprising a plurality of evaporator stages and a low pressure accumulator to enable the modulation of the capacity of the device to transfer heat. Means are provided to enable a rapid switching from device operation at high capacity to a lower capacity including the locating of the low pressure accumulator before a last stage of the evaporating heat exchanger in the working fluid flow path. The disclosed arrangement also includes means for avoiding the depletion of lubricating oil at the compressor during normal operation, as well as means for controlling the superheating of the working fluid.

REFERENCES:
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patent: 2492725 (1949-12-01), Ashley
patent: 2794328 (1957-06-01), Herrick
patent: 4003215 (1977-01-01), Roach
patent: 4179898 (1979-12-01), Vakil
patent: 4217760 (1980-08-01), Vakil et al.
patent: 4218890 (1980-08-01), Vakil et al.

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