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Numerical Study on the Performance of a Fin-and-Tube Condenser with Non-Uniform Air Distribution and Different Tube Types

불균일 공기분포와 관의 종류에 따른 핀-관 응축기의 성능 특성에 관한 해석적 연구

  • Cho, Da Young (Department of Mechanical System Design Engineering) ;
  • Hahm, Hyung Chang (Graduate School of NID Fusion Technology, Seoul National University of Science and Technology) ;
  • Park, Chang Yong (Department of Mechanical System Design Engineering)
  • 조다영 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 함형창 (서울과학기술대학교 NID융합기술대학원) ;
  • 박창용 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2012年08月10日
  • Published : 2012年12月10日

Abstract

A numerical study was performed to predict the performance of a fin-and-tube condenser. A condenser model was developed and verified by comparing the simulation results with experimental data for a R410A condenser in a residential air-conditioning system. The prediction error was 0.07% and -5.77% for the condenser capacity and pressure drop, respectively. In simulation results, the capacity and pressure drop of the condenser with even air velocity distribution were 0.67% and 12.93% higher than those with uneven distribution of air velocity. It was predicted by the model that the refrigerant distribution at the condenser inlet to the two first passes was not significantly influenced by the air distribution. The simulation results presented that the 1.49% of capacity and 64.6% of pressure drop were reduced by replacing helical microfin tubes with smooth tubes for the condenser.

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