Engineering Mechanics

Proceedings Vol. 20 (2014)

ENGINEERING MECHANICS 2014

Copyright © 2014 Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics

 

Havlík J., Dlouhý T.
pages 241 - 244, full text

This paper experimentally verifies the validity of theoretical models to calculate the heat transfer coefficient in shell-and-tube heat exchangers. Determination of the HTC is a complex problem, as a large deviation in the comparison of theoretical models and experiments commonly occurs. The methods by Kern, Bell-Delaware and Flow-stream analysis method for the evaluation of HTC in a vertical shell and tube condenser are compared with the results of measurements in the range of Reynolds number from 1200 to 6300. The HTC values by the Kern method reach the top boundary of the experimental results while the results of the Bell-Delaware method and the Stream-flow analysis method are at the bottom. Therefore, usage of the Bell-Delaware method and the Stream-flow analysis method is suitable in accordance with the design assurance.

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