Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Heat Transfer Enhancement with Surfactants in Horizontal Bundle Tubes on Absorber

계면활성제를 이용한 수평관군 흡수기의 전열촉진

  • 설원실 (부경대학교 대학원 냉동공조공학과) ;
  • 권오경 (부경대학교 대학원 냉동공조공학과) ;
  • 문춘근 (부경대학교 대학원 냉동공조공학과) ;
  • 윤정인 (부경대학교 냉동공조공학과)
  • Published : 2000.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

This research was concerned with the enhancement of heat transfer by surfactant added to the aqueous solution of LiBr. Different horizontal tubes were tested with and without an additive of normal octyl alcohol. The test tubes were a bare tube, floral tube and hydrophilic tube. The additive mass concentration was about 0.05${\sim}$5.5%. The heat transfer coefficient was measured as a function of solution flow rate for the range of 0.01${\sim}$0.034 kg/ms. The experimental results were compared with cases without surfactant. The enhancement of heat transfer by Marangoni convection effect generated by the addition of the surfactant is observed in each test tube. The increase of heat transfer coefficient by surfactant addition is about 35${\sim}$90% for bare tube, 40${\sim}$70% for the floral tube, 30${\sim}$50% for the hydrophilic tube and was higher for the cases with smaller a little solution flow rates.

Keywords

References

  1. Inoue, N.U., 1988, 'Practical Studies on Absorbers in Japan,' Refrigeration Engineering Division EBARA Corporation, pp. 18-19
  2. 川又治, 大谷忠男, 石塚伸明, 宮內德雄, 1985, '吸收冷凍機の吸收器用高性能？熱管の開發,' 日本電線, No.8, p. 577
  3. 古川雅裕, 佐木直榮, 金子敏之, 野世溪精, 1993, '吸收冷溫水機の吸收器用？熱促進管,' 日本冷凍協會論文集, Vol. 10, No. 2, pp. 219-226
  4. 永岡義一, 西山敎之, ?坂和浩, 中村誠, 1987 '吸收冷溫水機の高性能に關すゐ硏究開發(第3報),' Vol. 10, No.2, pp. 219-226
  5. Hoffmann, L., 1996, 'Experimental Investigation of Heat Transfer in Horizontal Tube Falling Film Absorber with Aqueous Solutions of LiBr Solution Without Surfactants,' Int J. Refrig, Vol 19, No.5, pp. 331 -341
  6. Yoon, J. I., et al., 1999, 'The Effect of Surfactant in the Absorptive and Generative Processes,' KSME International Journal, Vol. 13, No.3, pp. 264-272
  7. 윤정인, 柏木孝夫, 1994, '스프링 삽입형 유하액막식 흡수기의 열 및 물질전달 특성,' 대한기계학회논문집, 제19권, 제1호, pp. 1501-1509
  8. 설원설, 권오경, 윤정인, 1998, 'LiBr/$H_2O$<\TEX>계 흡수기의 흡수촉진에 관한 실험적 연구,' 공기조화.냉동공학논문집, Vol. 10, No.5, pp. 581-588
  9. 김병주, 이찬우, 1998, '수직관내 리튬브로마이드 수용액막의 흡수과정에 대한 비흡수가스의 영향(1) -실험적 연구-,' 대한기계학회논문집 B권, 제22권, 제4호, pp. 489-498
  10. Kashiwagi, T., 1985, 'The Activity of Surfactant in High-Performance Absorber and Absorption Enhancement,' Refrigeration, Vol. 60, No. 687, pp. 72 -79
  11. Kim, K. J., Berman, N. S., and Wood, B. D., 1993, 'Experimental Investigation of Enhanced Heat and Mass Transfer Mechanisms Using Additives for Vertical Falling Film Absorber,' International Absorption Heat Pump Conference, ASME, pp. 41-47