Inscrição na biblioteca: Guest

ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

OPTIMAL TUBE BUNDLE GEOMETRIES

Get access (open in a dialog) DOI: 10.1615/IHTC10.5380
pages 19-24

Resumo

The designer of a shell-and-tube heat exchanger has to make a number of decisions relating to tube bundle geometry. Typically, he has to specify tube bundle layout, tube pitch, baffle spacing and baffle cut. Each of these factors influences the thermal hydraulic performance of the exchanger. In this paper we develop a means of setting these factors such that the area of the exchanger is minimised.
We start with the derivation of a performance index (St3/f) and demonstrate the higher the index the lower the required area of the exchanger.
Then, through the use of a commercial computer program we show that:
* bundle geometry has a marked effect on overall exchanger performance.
* there is an optimum bundle configuration which is independent of flow rate, fluid physical properties, shell diameter, tubesheet layout and pitch ratio.
* this configuration is: window area/crossflow area ratio of 1 .1 5.
* the optimum tube bundle layout is 45 degree.