평관과 촉진관에서 R123/R134a의 풀비등 연구

초록

Heat transfer coefficients in nucleate pool boiling of the R134a/R123 mixture was studied experimentally under saturated temperature of 7℃. An ordinary smooth tube and an enhanced surface tube(26fpi, Turbo-B, Thermoexcel-E) were tested. The measured increment of the mixture boiling heat transfer coefficients were similar to those obtained for the single component liquids, even though the mixture system has a large change in GTD with composition. The smooth surface boiling data were accurately predicted by the proposed new correlation over a wide range of compositions and heat fluxes.