A STUDY ON THE DESIGN OF RECUPERATIVE BURNER

Waste heat recovery from the exhaust gas of industrial furnaces and ki lns that are high energy-consuming equipment is one of the effective e nergy conservation methods because of its high sensible heat contents. The recuperative burner integrated with a recuperator and burner is o ne of the combustion equipments with many advantages of simple install ation, compactness and easy control which can be applied to various fi elds of industry. A recuperative burner with the capacity of 400 kW wa s designed using the design data from experimental results. Performanc e tests on this burner were made. The exhaust gas analysis, including NOx, the measurement of the flame temperature, velocity, heat flux and heat flux analysis on the recuperative burner were the main topics of hot combustion tests. Design data from the experimental results are g as velocity, air velocity, air velocity, the tip-location of gas nozzl e, the dimension of furnace suitable to burner capacity, the dimension of recuperator and the role of cross-shaped steel plate for increasin g the energy efficiency in the recuperator. For uniform temperature di stribution and good thermal efficiency, it is appropriate to maintain the furnace pressure at 2-3 mm Aq. (C) 1998 John Wiley & Sons, Ltd.