LIQUID-GAS HEAT EXCHANGER FOR IMPROVING PERFORMANCE OF HEAT TRANSFER OF REFRIGERANT THROUGH AREA CONTACT BETWEEN INNER CORE AND TUBE

摘要

PURPOSE: A liquid-gas heat exchanger is provided to improve the performance of heat transfer of a refrigerant by combining a fan-shaped core with the inside of a tube in which gaseous refrigerant flows. CONSTITUTION: A first tube(110) has an inlet(111) and an outlet. Gaseous refrigerant of low temperature and pressure flows in the first tube. A second tube(120) has an inlet(121) and an outlet and is combined with the outside of the first tube, wherein a fluid of high temperature and pressure flows in the second tube in a counterflow type to transfer heat of the gaseous refrigerant. A core(130) formed in a fan shape is combined with the inside of the first tube. An expansion chamber(140) is inserted so that an outer end of the core is attached closely to an outer surface of the first tube in the center of the core.