Patent ID: 6044655
Filing Date: 2000-04-04
Classification: F25B,F28D,Y02B,Y10S

Abstract:
A refrigerating system comprising:a compressor for compressing the refrigerant;a heat emitter for cooling the refrigerant compressed at the compressor, the pressure in the heat emitter being higher than a critical pressure of the refrigerant;a pressure reducing means for reducing the pressure of the refrigerant from the heat emitter;an evaporator for evaporating the refrigerant from the pressure reducing means;means for operating said pressure reducing means such that the temperature and the pressure of the refrigerant at an outlet of the heat emitter are controlled along the optimum control line to maximize a coefficient of performance COP=.sub..DELTA. i/.sub..DELTA. L of the refrigerating cycle, and;means, in relation to said pressure reducing means, for additionally controlling a condition of the refrigerant, thereby obtaining a desired operation of the refrigerating system, comprising:an additional pressure reducing means arranged downstream from said pressure reducer, and;means for controlling the additional pressure reducing means for controlling a degree of a super heat at the inlet of the compressor.