ZHANG Renping
(School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: Efficient heat pipe heat exchanger has application in the flue gas heat recovery. A mathematical model is developed for the heat transfer processes of heat pipe heat exchanger and solved numerically with the steady temperature field, pressure field and velocity field obtained. The results have shown that the frontal and rear half of the heat pipe give rise to the reversed flow and the gas temperature rise gradually from the inlet to outlet; the heat transfer capacity of the heat pipe heat exchanger increases with the increase of the inlet velocity, the coefficient of resistance decreases with the increase of the Reynolds number.
Key words: heat pipe; heat exchanger; kiln; numerical simulation