Standard of boiler inlet water temperature and its influencing factors

I. Boiler In-Stream Temperature Standard

Under normal circumstances, the in-stream temperature of the boiler should be lower than the saturation temperature of the boiler steam. Generally speaking, the standard for the in-stream temperature of the boiler should be above 60℃, and it should not exceed 30℃ above the saturation temperature of the boiler steam. If the in-stream temperature of the boiler is too low, it will cause the boiler to be affected by the cold, thereby affecting the combustion efficiency and performance of the boiler; if the in-stream temperature of the boiler is too high, it will cause the boiler to expand due to heat, thereby affecting the safe operation of the boiler.

II. Factors Affecting Boiler In-Stream Temperature

1. Ambient Temperature

Ambient temperature is one of the most important factors affecting the in-stream temperature of the boiler. In winter, the ambient temperature is low, so the circulating water needs to be heated before entering the boiler, while in summer, the ambient temperature is high, so the circulating water needs to be cooled before entering the boiler. Therefore, the in-stream temperature of the boiler needs to be adjusted accordingly according to the changes in ambient temperature.

2. Circulating Water Temperature

Circulating water temperature is another important factor affecting the in-stream temperature of the boiler. If the circulating water temperature is high, then it needs to be cooled before entering the boiler; if the circulating water temperature is low, then it needs to be heated before entering the boiler. Therefore, the in-stream temperature of the boiler needs to be adjusted accordingly according to the changes in circulating water temperature.

3. Circulating Water Flow Rate

Circulating water flow rate is also an important factor affecting the in-stream temperature of the boiler. If the circulating water flow rate is small, due to the small amount of water, it may cause the in-stream temperature of the boiler to rise; if the circulating water flow rate is large, due to the large amount of water, it may cause the in-stream temperature of the boiler to decrease.

4. Boiler Load

Boiler load is another important factor affecting the in-stream temperature of the boiler. In low load conditions, since the steam output of the boiler is small, the heat required for the circulating water to enter the boiler before is relatively small, so the in-stream temperature is relatively low; in high load conditions, since the steam output of the boiler is large, the heat required for the circulating water to enter the boiler before is also relatively large, so the in-stream temperature is relatively high.

【Conclusion】

During the operation of the boiler, the in-stream temperature of the boiler is a very important parameter. The standard for the in-stream temperature of the boiler should be adjusted according to the specific conditions of the boiler, and the influencing factors of the in-stream temperature of the boiler also need to be fully considered and analyzed. Only by reasonably controlling the in-stream temperature of the boiler can the boiler operate normally, and achieve the goals of efficiency, safety, and energy conservation.