Suscripción a Biblioteca: Guest

ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

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

HEAT TRANSFER AND PRESSURE DROP IN A GRAPHITE BLOCK HEAT EXCHANGER

Get access (open in a dialog) DOI: 10.1615/IHTC10.2140
pages 417-422

Sinopsis

A test rig has been assembled to investigate the thermodynamic and hydraulic performance of a cylindrical graphite block heat exchanger consisting of three graphite blocks and a steel shell. The flow pattern is triple cross-flow on the shell-side with one pass per block and single pass on the tube-side. Overall heat transfer coefficients and pressure drops have been measured for a range of operating conditions.
Additionally, accurate data have been obtained on the variation of the thermal conductivity of the graphite with orientation, manufacturing process and impregnant content. A three-dimensional finite element model has been set-up to determine the effective thermal resistance of the graphite matrix. This value was then used together with the calculated shell and tube-side heat transfer coefficients to predict the overall heat transfer coefficient.