Refrigeration system using enthalpy converting liquid turbines

Details Refrigeration system using enthalpy converting liquid turbines Refrigeration system using enthalpy converting liquid turbines

1976-04-23

1977-04-26

King, Lloyd L.

Refrigeration

Refrigeration producer

Compressor-condenser-evaporator circuit

F25B 110

Patent

active

040193438

ABSTRACT:
A refrigeration system in which refrigerant liquid is cooled by self-evaporation and is used for refrigerating in the liquid form, in which the self-evaporation is in stages, each having a vapor compressor, the expansion taking place in enthalpy converting liquid turbines instead of permitting partial vaporization through valves into vapor separators. The enthalpy converting liquid turbines are much more efficient than the adiabatic liquid expansion which is customarily used in refrigeration systems in which a cold liquid cooled by the expansion is evaporated to absorb heat and thus to provide cooling. There is much less irreversibility and hence increase in entropy is reduced, especially when removal of super heat from the compressed vapors in each stage is effected by quenching with a small portion of the refrigerant liquid. A good portion of this heat is recovered as mechanical energy in the enthalpy converting turbines. With ammonia as the refrigerant, improvements of efficiency of 15% and more are achieved. Other refrigerants may be used instead of ammonia and the choice of refrigerant used is based on the conditions of operation. The type of refrigeration system is normally used for fairly large scale refrigeration plants and is not suitable for home refrigerators.

REFERENCES:
patent: 2966047 (1960-12-01), De Paravicni
patent: 3527059 (1970-09-01), Rust et al.
patent: 3668884 (1972-06-01), Nebgen
patent: 3954430 (1976-05-01), Curtis et al.

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