ISSN Online: 2377-424X
ISBN Print: 978-1-56700-474-8
ISBN Online: 978-1-56700-473-1
International Heat Transfer Conference 16
HEAT TRANSFER CHARACTERISTICS OF A GAS FLOW IN UNI-DIRECTIONAL POROUS COPPER PIPES
Résumé
Heat transfer and pressure loss characteristics of a gas flow in a uni-directional porous copper pipe are
experimentally evaluated. The porous copper pipe is fabricated by explosive welding technique and is expected
as a heat transfer promoter for heat exchangers, evaporators, heat sinks etc. In this study, the heat transfer and pressure loss characteristics of a gas flow in the porous pipes are evaluated by making use of a double-tube heat exchanger in which the porous copper pipe is used as an inner pipe. The porous copper pipe has the outer
diameter of 21 mm and the average pore diameter of approximately 4 mm. The heat transfer is evaluated in the
range of the inlet flow velocity from 1 m/s to 16 m/s. As a result, it is verified that the heat transfer of the porous
copper pipe is even much higher than that of a swirl flow and a ribbed pipe flow as well as that of the circular
pipe flow. From the view point of the pumping power, it is also proven that the uni-directional porous copper
pipe has more superior heat transfer performance though we have to make an effort to reduce the pressure loss.