| Title |
Condensing Performance Evaluation in Smooth and Micro-Fin Tubes for Natural Mixture Refrigerant(Propane/Butane) |
| Keywords |
Natural mixture refrigerant ; 혼합자연냉매 ; Propane/Butane ; 프로판/부탄 ; Condensation ; 응축 ; Smooth tube ; 평활관 ; Micro-fin tube ; 마이크로핀관 |
| Abstract |
This paper deals with the heat exchange performance prediction of a counter flow type double-tube condenser for natural refrigerant mixtures composed of Propane/n-Butane or Propane/i-Butane in a smooth tube and a micro-fin tube. The local characteristics of heat transfer, mass transfer and pressure drop are calculated using a prediction method developed by the authors. The total pressure drop and the overall heat transfer coefficient are also evaluated on various heat exchange conditions. The calculated results of the natural refrigerant mixtures are compared with HCFC22. In conclusion, natural refrigerant mixtures composed of Propane/n-Butane or Propane/i-Butane are appropriate candidates for alternative refrigerant from the viewpoint of heat transfer characteristics. |