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Influence of Spring on The Absorption Performance of a Vertical Absorber Tube  

김정국 (성균관대학교 기계공학부)
조금남 (성균관대학교 대학원)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.14, no.10, 2002 , pp. 825-832 More about this Journal
Abstract
The present study investigated the enhancement of the absorption performance by the spring wrapped around the outer surface of the vertical falling film absorber tube. Heat and mass transfer enhancements were experimentally investigated, and flow visualization was performed to observe the wettability and flow pattern of the solution. The key experimental parameters were spring diameter (0.5, 1.0 mm) and spring pitch (1, 3, 10 mm), film Reynolds number (50~150), and concentration of LiBr-$H_2O$ solution (55, 60, 65 wt%). As the spring diameter was increased, the absorption mass flux, Sherwood number, Nusselt number, heat flux, and heat transfer coefficient were increased The Nusselt and Sherwood numbers showed the maximum at the spring pitch of 3mm, and the ratio of pitch to diameter of approximately 3 and 6 for the spring diamter of 0.5 mm, respectively.
Keywords
Spring; Vertical falling film absorber; LiBr-$H_2O$ solution;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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[ Hur, K. J.;Jeong, E. S.;Jeong, S. Y. ] / Korean Journal of Air-Conditioning and Refrigeration Engineering   과학기술학회마을
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[ Kim, D. H.;Kim, J. K.;Cho, K. N. ] / Proceeding of the SAREK Winter Annual Conference
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[ Kweon, T. H. ] / M. S. Thesis, Dpt. Mech. Eng.
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[ Hijikata, K.;Lee, S. K.;Nagasaki, T. ] / Transaction of JSME
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11 Using uncertainty analysis in the planning of an experiment /
[ Moffat, R. J. ] / Trans. of the ASME: J. of Fluid Engineering
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[ Kim, B. J.;Moon, H. S. ] / Korean Journal of Air-Conditioning and Refrigeration Engineering   과학기술학회마을
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[ Seo, J. H.;Cho, K. N.;Choi, K. B. ] / Korean Journal of Air-Conditioning and Refrigeration Engineering   과학기술학회마을