HEAT TRANSFER TUBE FOR ZEOTROPIC REFRIGERANT MIXTURE, HEAT EXCHANGER WITH THE HEAT TRANSFER TUBES, METHOD OF ASSEMBLING THE HEAT EXCHANGER, AND REFRIGERATOR AND AIR CONDITIONER WITH THE HEAT EXCHANGERS

摘要

IN A HEAT TRANSFER TUBE FOR A ZEOTROPIC REFRIGERANT MIXTURE, THE INNER SURFACE OF THE TUBE IN WHICH THE ZEOTROPIC REFRIGERANT MIXTURE FLOWS IS FORMED WITH GROOVES HAVING CROSS PORTIONS WHERE THE GROOVES INTERSECT WITH EACH OTHER, OR THE INNER SURFACE OF THE TUBE IS FORMED WITH A PLURALITY OF INDEPENDENT PROJECTIONS. THUS, CONCENTRATION BOUNDARY LAYERS GENERATED IN THE ZEOTROPIC REFRIGERANT MIXTURE ARE STIRRED TO REDUCE THE THICKNESS OF THE CONCENTRATION BOUNDARY LAYERS, THEREBY DECREASING THE DIFFUSION RESISTANCE AND PROMOTING THE STIRRING EFFECT. CONSEQUENTLY, THERE CAN BE PROVIDED A HEAT TRANSFER TUBE FOR A ZEOTROPIC REFRIGERANT MIXTURE WHICH EXHIBITS A HIGH HEAT TRANSFER PERFOMANCE, AND A HEAT EXCHANGER OF A CROSS-FIN TUBE TYPE, A REFRIGERATOR AND AN AIR CONDITIONER WHICH INCLUDE SUCH HEAT TRANSFER TUBES.(FIG 1)