Efficiency and Economy Research of a Tunnel Kiln's Flue Gas Heat Exchanger

摘要

In order to obtain efficiency and economy of a ceramic tunnel kiln's flue gas heat exchanger, firstly, the exchanger's sizes and thermal parameters on operative conditions were measured. Secondly, flow field and temperature field in the operative exchanger were numerically simulated by using FLUENT, a computational fluid dynamics soft ware. Finally, on base of the simulation, the exchanger's efficiency and economy were calculated. The calculation results are listed as the following: (1) Energy savings in per unit time for utilizing the heat exchanger to recycle and reuse the flue gas's waste heat is 112.2kW. (2) Efficiency of the heat exchanger equals 77%.