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Licensed Unlicensed Requires Authentication Published by De Gruyter June 30, 2011

Numerical and Experimental Study on Temperature Crossover in Shell and Tube Heat Exchangers

  • Fuhua Jiang and Xianhe Deng

Experimental and numerical studies were conducted to investigate the heat transfer characteristics of five shell and tube heat exchangers (STHXs) with ratio of the length to width (L/W) at the range of 1.85 to 9.23. Temperature crossover in counter flow STHXs is meaningful in food processing industry. The relationship between temperature crossover and L/W is proposed for the first time. Both the experimental and numerical results show that temperature crossover can be achieved in STHXs with L/W?4.62 and can’t be achieved any more in STHXs with L/W?3.08. The results also indicate that heat transfer performance decreases with L/W decreasing. The inherent reason of this phenomenon is analyzed by computational fluid dynamics method.

Published Online: 2011-6-30

©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston

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