REFRIGERATION SYSTEMS IMPROVED ENERGY EFFICIENCY AND COOLING EFFICIENCY.

摘要

The present invention relates to a refrigeration system for improving the efficiencies of a condenser and an evaporator. At present, the basic cycle of an existing refrigeration system comprises compression, condensation, expansion, and evaporation which are repetitively performed. For the efficient operation of the existing refrigeration system above, thermal energy for the condensation of a refrigerant gas is required to be sufficiently discharged, and a refrigerant flowing to the evaporator through an expansion valve is required to be supplied as a liquid refrigerant which is formed by removing a gaseous refrigerant from the refrigerant as much as possible. However, when the efficiency of the condenser is deteriorated by the unsuccessful heat radiation through the condenser in a hot and humid external environment in summer, a large amount of the refrigerant gas is mixed in the refrigerant supplied to the expansion valve, so that the efficiency of the evaporator is deteriorated, and, as a result, the problems of refrigeration efficiency deterioration and failures occur. The refrigeration system for improving the efficiencies of the condenser and the evaporator according to the present invention for solving the problems above is applied with two methods. One of the methods is to resupply the gaseous refrigerant to the expansion valve after condensing the gaseous refrigerant after separating the gaseous refrigerant from the liquid-gas mixed refrigerant supplied to the expansion valve using a density difference between the gaseous refrigerant and the liquid refrigerant, thereby maximally supplying only the liquid refrigerant to the expansion valve. The other of the methods is to connect the line of a low-temperature and low-pressure refrigerant supplied from a liquid separator to a compressor and the line of a high-temperature and high-pressure refrigerant flowing from the compressor into the condenser, thereby improving the efficiency of the compressor by raising a low-temperature refrigerant gas flowing into the compressor, and preventing the deterioration of the efficiency of the condenser in the hot and humid external environment in summer by lowering the temperature of a high-temperature and high-pressure refrigerant gas flowing into the condenser.