대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2009년도 하계학술발표대회 논문집
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- Pages.1443-1448
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- 2009
밀집형 열교환기 내 공기 측 대류열전달특성
Analysis for Air-Side Convective Heat Transfer Characteristics in Compact Heat Exchangers
- Moh, Jeong-Hah (Division of Mechanical and Automotive Engineering, Wonkwang University) ;
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Lee, Sang-Ho
(Division of Mechanical and Automotive Engineering, Wonkwang University)
- 발행 : 2009.06.25
초록
Numerical analysis has been carried out to investigate air-side convective heat transfer characteristics in compact heat exchangers with continuous plate fins. Simulation results such as air flow and temperature distributions are presented, and heat transfer characteristics are compared for various inlet conditions. Results from various turbulence models are also compared for applicability. There is large difference between the local heat transfer coefficient distributions along the cylinder wall for circular tubes. Colburn j factors from the calculated results of circular and flat tubes in the heat exchangers are compared for various Reynolds number. The predicted results in this study can be applied to the optimal design of air conditioning system. with compact heat exchanger.
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