Experimental Study on Heat Transfer of Bellows

Abstract:

Heat transfer of condensation has been theoretically and experimentally studied.The calculation formula of heat transfer coefficient outside and inside of bellows was deduced, and corrected through experiment. The calculation results are accordant with the experimental ones, and the errors is less than 10%. The effect of bellows structure parameters and pipe diameter on the enhancement heat transfer has been investigated. It is found that in the steady flow region, the average heat transfer coefficient outside and inside of bellows is 3-5 times than that in a smooth tube under the same conditions, and when considering the increasing in heat transfer area, the effectiveness of enhancement heat transfer is 5-7 times than that in a smooth tube.At the same time, total heat transfer coefficient is 3-5 times and 5-7 times than that in a smooth tube.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 376-379
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.376
• Online since: November 2011
• Authors: Shao Feng Yan, Shi Hong Feng, Yue Qiu Sun
• Keywords: Bellows, Condensation Heat Transfer, Enhancement Heat Transfer, Formula for Heat Transfer

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