Effect of steam boiler flue gas temperature and flow rate when the flue gas temperature and flow rate increase will make the convection superheater increases, so that the heat absorption of superheater steam temperature rise will increase, so.

4噸燃油鍋爐的爐膛出口煙氣溫度和流速的影響：當煙氣溫度和流速增大時將使過熱器的對流傳熱增大，因而使過熱器的吸熱量增加，所以蒸汽溫度將升高。

Many factors affect the flue gas temperature and velocity size, such as changes in the nature of change, the number of the furnace fuel combustion intensity, fuel itself (i.e. the various components contained in the coal percentage change) and decrease the amount of excess air, spray burner operation mode change, boiler water temperature, the heating factor clean degree, as long as any of these factors change, will have a series of chain reaction, will directly affect the change of the temperature and velocity of flue gas.

影響煙氣溫度高低和流速大小的因素很多，例如爐膛內燃料數量的增減、燃燒的強弱、燃料自身的性質變化(即煤中所含各種成分百分比的變化)、過剩空氣量的增減、噴燃器運行方式的改變、鍋爐進水溫度的高低、受熱面的清潔程度等因素中，只要其中任何一種因素發生了明顯的變化，都會發生一系列的連鎖反應，都將直接影響到煙氣溫度和流速的變化。

Influence of saturated steam temperature and flow at Superheater inlet of steam boiler: when the saturated steam temperature is low and the steam flow increases, superheater needs more heat. In this case, it will inevitably cause the fluctuation of superheater operating temperature, and thus directly affect the temperature of superheated steam. The factors affecting the temperature and flow rate of saturated steam are mainly the change of boiler load, that is to say, the increase or decrease of steam production and the pressure in the boiler. The change of water level in the boiler will also lead to the change of steam humidity, and the change of boiler inlet temperature and combustion condition will also result in the change of steam yield.

蒸汽鍋爐的過熱器入口飽和蒸汽溫度和流量的影響：當飽和蒸汽溫度偏低，蒸汽流量增大時，則需要過熱器提供更多的熱量。在這種情況下必然會引起過熱器工作溫度的波動，因而直接影響過熱蒸汽的溫度。影響飽和蒸汽溫度的高低和流量大小的因素主要是鍋爐負荷的變化，即產汽量的增減和鍋內壓力的高低。鍋內水位高低的變化也會引起蒸汽濕度的變化，鍋爐進水溫度及燃燒工況的變化也會造成產汽量的變化。

The influence of steam temperature and flow at the superheater entrance of a steam boiler: when the saturated steam temperature is low and the steam flow rate increases, the superheater needs to provide more heat. In this case, it will inevitably cause the fluctuation of superheater operating temperature, and thus directly affect the temperature of superheated steam. The factors affecting the temperature and flow rate of saturated steam are mainly the change of boiler load, that is to say, the increase or decrease of steam production and the pressure in the boiler. The change of water level in the boiler will also lead to the change of steam humidity, and the change of boiler inlet temperature and combustion condition will also result in the change of steam yield.

對于不同形式的過熱器，過熱器內蒸汽的溫度隨負荷的變化也不相同。輻射式過熱器的汽溫隨著負荷的增加而降低，對流式過熱器正好相反。鍋內水位高則蒸汽濕度大，該蒸汽在過熱器內需要的熱量也比較多，因而汽溫要下降。