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A Study on the Heat Recovery from Boiler Exhaust Gas with Multi-stage Water-fluidized-bed Heat Exchanger
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 Title & Authors
A Study on the Heat Recovery from Boiler Exhaust Gas with Multi-stage Water-fluidized-bed Heat Exchanger
Kim, Dae-Gi; Park, Sang-Il; Kim, Han-Deok;
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 Abstract
Heat recovery from boiler exhaust gas with multi-stage water-fluidized-bed heat exchanger is analyzed in this study. The recovered energy here is not only sensible heat but also latent heat contained in the exhaust gas. In this system direct contact heat transfer occurs while exhaust gas passes through water bed and the thermal energy recovered this way is again delivered to the water circulating through heat exchanging pipes within the bed. Thus the thermal energy of exhaust gas can be recovered as a clean hot water. A computer program developed in this study can predict the heat transfer performance of the system. The results of experiments performed in this study agree well with the calculated ones. The heat and mass transfer coefficients can be fecund through these experiments. The performance increases as the number of stage increases. However at large number of stages the increasing rate becomes very low.
 Keywords
Water-Fluidized-Bed;Direct Contact Heat Exchange;Multi-Stage Heat Exchanger;
 Language
Korean
 Cited by
1.
물유동층 열교환기의 열회수성능 연구,김한덕;박상일;이세균;

설비공학논문집, 2003. vol.15. 8, pp.690-696
 References
1.
박영재, 1988, 직접 접촉식에 의한 보일러 페열 회수의 최적화, 한국과학기술원 석사학위논문

2.
한국에너지기술연구소, 1997, 저온 폐가스 청정 열 회수 이용기술개발 연구, 한국 에너지 기술연구소 보고서

3.
Ghazi, H. S., 'Direct-Contact Heat Transfer for Air Bubbling Through Water,' ASME Journal of Energy Resources Technology, Vol. 113, pp. 71-74

4.
Masabumi Nishikawa, Hideo Kato, and Kenji Hashimoto, 'Heat Transfer in Aerated Tower Filled with Non-Newtonian Liquid,' Chemical Engineering Science, Vol. 16, pp. 133 - 137 crossref(new window)

5.
Smith, R. C., Rohsenow, W. M., and Kazimi, M. S' 1982, 'Volumetric Heat- Transfer Coefficients for Direct-Contact Evaporation,' ASME Journal of Heat Transfer, Vol. 104, pp. 264-270

6.
Wilbert F. Stoecker and Jerold W. Jones, 1982, Refrigeration & Air Conditioning, Chap. 3. McGraw-Hill, Inc.

7.
Frank P. Incropera and David P. DeWitt, 1996, Fundamentals of Heat and Mass Transfer, Chap. 8. John Wiley & Sons. Toronto