Abstract
About a single tube thermosyphon, we performed numerical analysis about a heat transfer characteristic of the condenser section. And we examined it about temperature distribution of condenser section heat transfer surface and influence of distribution of a wall surface heat-transfer coefficient by comparing an analysis result with experimental value of the past. As a result, at the time of charge ratio 90% and coolant temperature 50℃, we got the analysis result that was near to experimental result. We were able to confirm that condenser wall temperature lowered when changed a local heat-transfer coefficient and analyzed it. There was not most of the influence to an average heat-transfer coefficient then.
