화학공학소재연구정보센터
International Journal of Heat and Mass Transfer, Vol.48, No.18, 3763-3772, 2005
Enhancement of boiling heat transfer in a 5 x 3 tube bundle
The results of an experimental investigation on nucleate boiling heat transfer in an electrically heated 5 x 3 in-line horizontal tube bundle under pool and low cross-flow conditions of saturated water near atmospheric pressure are presented here. It is observed that the heat transfer coefficient is minimum on bottom row tubes and increases in the upward direction with maximum values on top row tubes. Also, heat transfer coefficient on central column tubes was found to be slightly higher than those on the corresponding side tubes. Further, a Chen-type relation has been used to determine the local boiling heat transfer coefficient on a tube in a heated tube bundle. (c) 2005 Elsevier Ltd. All rights reserved.