Journal of Guangdong University of Technology ›› 2012, Vol. 29 ›› Issue (3): 92-95.doi: 10.3969/j.issn.1007-7162.2012.03.018

• Comprehensive Studies • Previous Articles     Next Articles

Experimental Study of Heat Convection in Tubes with Big Temperature Difference

Chen Guansheng, Li Wenfeng, Du Wenjie, Yang Jingquan, Zhang Li, Mai Zhihao   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2012-03-28 Online:2012-09-20 Published:2012-09-20

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Abstract: In view of little research into heat convection in tubes with big temperature difference, which were used in the high temperature solar thermal system, an experimental apparatus with big temperature difference was built up, and a lot of experimental studies were conducted. The experimental data were tested at different heating temperatures (temperature difference), heat transfer fluids, HTFs flow rates and tube diameters, which influence the process of heat convection. The relationship equation has been obtained, which can be used for the design of similar heat transfer equipment.

Key words: big temperature difference; heat convection; heat transfer; solar energy

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