Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Effect of Vapor Flow Direction on Falling Film Heat Transfer in a Coiled Tube Absorber (Part 1: Experiments with Pure Water)

코일형 흡수기에서 증기 유동 방향이 유하액막 열전달에 미치는 영향 (제1부: 물을 이용한 실험)

  • 박경진 (서강대학교 기계공학과 대학원) ;
  • 권경민 (서강대학교 기계공학과 대학원) ;
  • 정시영 (서강대학교 기계공학과) ;
  • 김병주 (홍익대학교 기계시스템디자인공학과)
  • Published : 2001.08.01
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Abstract

The effect of vapor flow direction on falling film heat transfer was experimentally investigated by using water. Parallel flow (both water and vapor downwards) showed higher heat exchange performance than counterflow(downward water and upward vapor). The difference became significant as the vapor flow rate was increased. It is supposed that the uprising vapor disturbs the solution film flow and heat transfer is reduced by uneven distribution or detachment of water film.

Keywords

References

  1. Natural Working Fluids '98 Natural Working Fluids in a Historical Perspective Steimle,F.
  2. Natural Working Fluids '98 Study on the Characteristics of Ammonia-Water Absorption Refrigeration Saito,K.(et al.)
  3. Sorptions-Kaeltema-schinen Niebergall,W.
  4. International Absorption Heat Pump Conference Development of a Counter Current Model for a Vertical Fluted Tube GAX-Absorber Kang, Y. T.;Christensen, R. N.
  5. International Ab-Sorption Heat Pump Conference Design of a Combined Component in GAX Heat Pump Systems: Absorber/Desorber Kang, Y. T.;Vittel, M.;Christensen, R. N.
  6. International Sorption Heat Pump Conference Numerical Model of Ammonia-Water Absorption inside a Vertical Tube Gommed,K.;Grossman,G.;Koenig,M.
  7. International Sorption Heat Pump Conference Miniaturized Heat and Mass Transfer Technology for Absorption Heat Pumps Garimella,S.
  8. Ab-Sorption Heat Pump Conference Experimental Investigation of Heat and Mass Transfer with Aqueous Ammonia Hoffmann,L;Ziegler,F.
  9. International Ab-Sorption Heat Pump Conference Experimental Investigation and Model Verification for a GAX Absorber Palmer, S. C.;Christensen, R. N.
  10. International Sorption Heat Pump Conference Thermodynamic Data in a Falling Film Absorber Operating on Ammonia/Water Solutions Romero,R.J.(et al.)
  11. ASHRAE Transactions v.104 Heat Transfer Performance of a Coiled Tube Absorber with Working Fluid of Ammonia/Water Jeong, S.;Lee, S. K.;Koo, K. K.
  12. VDI, Gc 1-2 VDI Heat Atlas VDI-GVC
  13. VDI Heat Atlas, VDI, Ja 6 VDI-GVC