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AssigneeGeneral Electric Company
InventorHimanshu B. Vakil
Estimating the term…
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.
A method of modulating the thermal transfer capacity and the evaporator superheat of a vapor compression cycle device which includes compressing a multi-component working fluid mixture, comprising at least two miscible refrigerants having different boiling points condensing a vapor portion of the mixture, storing a liquid portion of the mixture under high pressure, controlling the flow rate of the mixture from high pressure storage, evaporating a portion of the mixture liquid flowing from storage, storing the remaining unevaporated mixture under low pressure, combining at least a portion of the evaporated mixture and a controlled amount of the stored unevaporated mixture portion, evaporating the combined mixture, and controlling the flow rate of compression by the density of the working fluid mixture entering therein.
A vapor compression cycle device for circulating a multi-component working fluid comprising at least two miscible refrigerants having different boiling points in a closed working fluid circuit said device including;
A method of modulating the thermal transfer capacity and the evaporator superheat of a vapor compression cycle device which includes compressing a multi-component working fluid mixture, comprising at least two miscible refrigerants having different boiling points circulating the mixture to a condensing heat exchanger, circulating the condensed mixture from the condensing heat exchanger to a high pressure accumulator, circulating a portion of the mixture from the high pressure accumulator to a first evaporator stage, circulating the mixture from the first evaporator stage to a low pressure accumulator, controlling the circulation of mixture liquid from the low pressure accumulator to a second evaporator stage, circulating mixture vapor from the low pressure accumulator to the second evaporator stage, circulating the mixture from the second evaporator stage to a compressor, and controlling the flow rate of compression by density of the mixture entering therein.
A vapor compression cycle device for circulating a multi-component working fluid comprising at least two miscible refrigerants having different boiling points in a closed working fluid circuit said device including;
A method of modulating the thermal transfer capacity and evaporator superheat of a vapor compression cycle device in which a vapor phase of a working fluid mixture which comprises at least two miscible refrigerants having different boiling points is compressed and condensed, condensed mixture is selectively stored under high pressure, at least a portion of the condensed mixture is expanded, and in which the expanded mixture is recycled for compression by;
Dependencies are inferred from the claim text.