furnace cavity

However, because the calcinatory reaction of the limestone happens in the furnace cavity, the thermal equilibration of the boiler will be changed.

但是由于石灰石在炉膛内存在煅烧反应，锅炉的热平衡将发生变化。

The utility model is provided with separate isolating valve, aeration valve, vacuum valve and thief rod mating the sampling cavity to keep the air in the furnace cavity and realize on-line sampling.

本实用新型设置了独立的隔离、充气、真空阀门以及与取样腔配套的取样杆，使取样过程中的炉腔内气氛不变，达到在线取样的目的。

Applications show that the temperature difference of furnace cavity is 23~ 31 ℃, the temperature of furnace casing is 57~ 69 ℃ and heat efficiency reaches to above 40%.

应用表明，炉膛温差为23～31℃，炉体外壳温度为57～69℃，热效率达40%以上。