Bachelor thesis of this study aims to compare the features of heat transfer of heat exchanger short rings installed valve back together with fins that heat mode by comparing the effect of temperature. The working substance air speed, the size of the fins on the heat transfer of the feature heat vibrating ring with back valve installation (CLOHP/CV), which is made of a heat pipe, copper has a diameter size 5 mm inside length length section evaporates. Best thermal and condensation is 20, 20 and 10 cm, respectively, the amount of bend, turn, bend, turn the valve number 24 is equal to the angle of 90° c 2 Kit with the horizontal level. Set of 4 set of heat exchange fins 3 ring installation size is 0.5, 1.0, 1.5 centimeter air defined speed is 0.5, 1.0, 1.5 meters per second, experimental batches heat heat heat coils. By using air as a heat exchanger. The working temperature of evaporation is made 60 70 80 0C, 0C and 0C, and the substance used is water, ethanol, and R134a by additives work rate is 50% of the total internal volume. From the comparison of the experimental results showed that heat vibrating ring installed valve back together (CLOHP/CV) is the rate of heat transfer and thermal maximum effectiveness at trial kits, Kit flanges on both sides. Size 1.5 cm 80 0C temperature when using R134a as working.Keywords: cooling fins; message; thermal efficiency of heat different modes;
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