Abstract
The steady-state local heat transfer characteristics for air flowing turbulently inside an electrically heated pipe have been determined experimentally over a range of Reynolds numbers from 12000 to 56000. A surface-boundary heating condition of uniform heat flux was employed. The entrance configuration of the heat transfer pipe was either a similar pipe of L D = 50, 30, 15 ; or a sharp edge (i.e. L D = 0 ). Based on the obtained experimental data, a correlation for predicting the rate of heat transfer was developed.
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