Home Service FAQs FAQ of gas-fired(oil-fired) boilers What is the maximum temperature of gas-fired boiler?

What is the maximum temperature of gas-fired boiler?

26 Nov 2021

Different steam pressures correspond to different steam temperatures.

The steam temperature of low-pressure boiler is mostly saturation temperature or not higher than 400℃.

The outlet pressure of medium-pressure boiler is 3.8 ~ 5.4 MPa, and the common steam temperature is 450℃.

The outlet pressure of sub-high pressure boiler is 5.4 ~ 9.8 MPa, and the common steam temperature is 540℃.

The outlet pressure of high-pressure boiler is 9.8～13.7MPa, and the common steam temperature is 540℃.

The outlet pressure of ultra-high pressure boiler is 13.7 ~ 16.7 MPa, and the outlet steam temperature is mostly 540℃, in some cases is 555℃.

The outlet pressure of subcritical pressure boiler is 16.7 ~ 22.1 MPa, and the common steam temperature is 538℃.

The outlet pressure of supercritical pressure boiler is 22.1 ~ 27.0 MPa, and the common steam temperature is 538 ~ 543℃ or 538 ~ 566℃.

The ultra-supercritical pressure boiler pressure is ≧27.0 MPa, and the rated outlet steam temperature is ≧590℃.

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What is the maximum temperature of gas-fired boiler?

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