What is the typical temperature at the economizer exit?

What is the typical temperature at the economizer exit?

• A. 380°C
• B. 600°C
• C. 540°C
• D. 280°C

Answer: (A)

The typical temperature at the economizer exit is around 380°C in many industrial applications. The economizer is a crucial component in a boiler system, designed to preheat the feedwater before it enters the boiler. By doing so, it increases the overall efficiency of the system, reducing fuel consumption and lowering emissions. At 380°C, the economizer effectively transfers heat from the exhaust gases, ensuring that the feedwater is sufficiently heated without reaching the boiling point. This temperature allows for optimal heat recovery while maintaining the integrity of the water to avoid excessive pressure or steam formation in the economizer itself. In contrast, the other temperature options mentioned are higher than what is typical for economizer exit temperatures. A temperature of 600°C exceeds the normal operating range, where structural integrity could be compromised and potential efficiency losses could occur. Additionally, 540°C can occur but is generally associated with superheater sections rather than economizers. Lastly, a temperature of 280°C is too low for a typical economizer exit, as it would not effectively preheat the water to achieve desired thermal efficiency. Therefore, 380°C is the most accurate representation of common operating conditions for an economizer exit temperature.

The typical temperature at the economizer exit is around 380°C in many industrial applications. The economizer is a crucial component in a boiler system, designed to preheat the feedwater before it enters the boiler. By doing so, it increases the overall efficiency of the system, reducing fuel consumption and lowering emissions.

At 380°C, the economizer effectively transfers heat from the exhaust gases, ensuring that the feedwater is sufficiently heated without reaching the boiling point. This temperature allows for optimal heat recovery while maintaining the integrity of the water to avoid excessive pressure or steam formation in the economizer itself.

In contrast, the other temperature options mentioned are higher than what is typical for economizer exit temperatures. A temperature of 600°C exceeds the normal operating range, where structural integrity could be compromised and potential efficiency losses could occur. Additionally, 540°C can occur but is generally associated with superheater sections rather than economizers. Lastly, a temperature of 280°C is too low for a typical economizer exit, as it would not effectively preheat the water to achieve desired thermal efficiency. Therefore, 380°C is the most accurate representation of common operating conditions for an economizer exit temperature.