MICRO-CHANNEL INTEGRATED TYPE LAMINATED STRUCTURE HEAT EXCHANGER FOR SUPER CRITICAL REFRIGERANT

摘要

PROBLEM TO BE SOLVED: To materialize a heat exchanger comprising micro scale minute channels for super critical refrigerant having pressure resistance against CO₂ getting under a super critical condition at 80 atmospheres or higher or chlorofluorocarbon refrigerant getting under a super critical condition at 40 atmospheres or higher, materializing high overall heat transfer coefficient, and having short start time as a heat exchanger without increasing friction loss.;SOLUTION: Many metal plates 6 having minute channels 3, 5 formed on a surface thereof are joined by using diffused junction to form the heat exchanger having an integrated structure having many minute channels laminated. Consequently, the heat exchanger has a high pressure resistant structure enduring against high pressure, and enables the super critical CO₂ refrigerant to flow at high speed by that, and become a compact structure having heat transfer quantity exceeding that of a former type heat exchanger as the result.;COPYRIGHT: (C)2008,JPO&INPIT