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The effect of heat conduction resistances of tubes and shells on transient behaviour of heat exchangers.

Author(s) : ROETZEL W., XUAN Y.

Type of article: Article

Summary

With respect to radial heat conduction in tube and shell walls as well as heat loss from the shell to the environment, a predicting method for transient behaviour of counter and parallel heat exchangers is developed. Some parameters such as the Biot number and the Fourier number for estimating the effect of radial heat conduction are proposed. If Biot number is higher than 0.05, radial heat conduction will remarkably affect dynamic characteristic of heat exchangers and it should be taken into account. In addition, an approximate approach of considering radial heat conduction is presented, which reduces much of computing time. There exists satisfactory coincidence between accurate and approximate treatment of radial heat conduction.

Details

  • Original title: The effect of heat conduction resistances of tubes and shells on transient behaviour of heat exchangers.
  • Record ID : 1994-1517
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 36 - n. 16
  • Publication date: 1993/11

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