SUPERCRITICAL FLUID HEAT EXCHANGER CONSIDERING PSEUDO-CRITICAL POINT AND METHOD EXCHANGING SUPERCRITICAL FLUID HEAT USING THE SAME

摘要

An embodiment of the present invention provides a supercritical fluid heat exchange device and method in which efficiency is increased by designing a heat exchanger in consideration of a working fluid whose properties change based on a pseudo-critical point. A supercritical fluid heat exchange device in consideration of a similar critical point according to an embodiment of the present invention, which is included in and used in a supercritical Rankine cycle system including a turbine, a recuperator, a condenser, and a pump, A first heat exchange unit through which a working fluid, which is a fluid flowing through the pump, and a thermal fluid, which is a fluid supplying thermal energy to the working fluid, passes through, and heat exchange between the two fluids is performed; And a second heat exchange unit formed between the first heat exchange unit and the turbine, through which the working fluid and the heat fluid passing through the first heat exchange unit pass to perform heat exchange between the two fluids.