Refrigeration – Processes – Compressing – condensing and evaporating
Patent
1985-08-26
1986-12-30
Capossela, Ronald C.
Refrigeration
Processes
Compressing, condensing and evaporating
62174, 62504, F25B 100
Patent
active
046319263
ABSTRACT:
A method of obtaining low temperatures comprising pulse-feeding a refrigerant within a step-wise pressure range where boiling occurs, and its vapors are formed at a low pressure. The refrigerant vapors are subsequently compressed and condensed until the formation of a liquid refrigerant. The liquid refrigerant is subcooled and boiled at a low pressure and a temperature out of the boiling temperature step-wise range with the number of steps depending on the final temperature of the refrigerated medium. An apparatus for obtaining low temperatures comprises, successively interconnected in a closed path, an evaporator, a means to separate a liquid refrigerant, associated with at least two differential pressure relays through pressure transducers, a compressor, a condenser, a receiver, a means for pulse feeding of the liquid refrigerant, and a means for uniform distribution of the liquid refrigerant. The evaporator comprises interconnected suction header and at least two heat-exchange plates, one of which is associated with at least two temperature relays through temperature transducers.
REFERENCES:
patent: 3866439 (1975-02-01), Bussjager et al.
patent: 3977205 (1976-08-01), Dreisziger et al.
patent: 4262496 (1981-04-01), Bell, Jr.
Didenko Vladimir F.
Goldshtein Lev I.
Kalashov Valentin P.
Khaitin Boris S.
Pleshkanovsky Jury P.
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