After applying all-fiber lining in heat treating furnace, its heat loss of flue gases increases obviously, so that it is necessary for a heat exchanger to be equiped.
热处理炉采用全纤维炉衬后，排烟热损失有明显增加，显然有设置换热器的必要。
2
Heat efficiency of steam injection boiler is generally low in oilfields. Flue heat loss is the main factor affecting boiler heat efficiency and depends on flue gas temperature and volume.
The calandria arrangement in the furnace floor flue gas channel that is formed by the ondol pier bricks with circular sections greatly lowers the local resistance loss of flue gas.