how much can the gas boiler exhaust temperature

Industrial Boiler Efficiency Calculation & Factors ...

The flue gas temperature is the temperature of the combustion gases as they exit the boiler. If the flue gas temperature is high then it is often associated with heat being lost. Flue gas economizers can be installed to recover heat and enhance the overall boiler efficiency.

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Exhaust Temperature - an overview | ScienceDirect Topics

Fig. 4.11 takes exhaust gas temperature up to 1650°C. So much high-temperature energy is now available to evaporate superheat and reheat steam that some high-level energy must be reserved to fully economize all of the steam being generated. The solution to this problem is to add feedwater heaters as shown in Fig. 4.12. Now instead of reserving high-temperature exhaust energy to economize much

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What's the best temperature for a condensing boiler to be ...

Jan 22 2019 · For natural gas boilers the dew point is around 55C. In other words the water in the return pipe needs to be 55C or lower or your boiler will not operate at maximum efficiency and potentially...

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Exhaust Temperature - an overview | ScienceDirect Topics

Fig. 4.11 takes exhaust gas temperature up to 1650°C. So much high-temperature energy is now available to evaporate superheat and reheat steam that some high-level energy must be reserved to fully economize all of the steam being generated. The solution to this problem is to add feedwater heaters as shown in Fig. 4.12. Now instead of reserving high-temperature exhaust energy to economize much

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Flue Gas Waste Heat Boiler Thermal Efficiency Calculation

Its size is related to the amount of smoke the smoke exhaust and the reference temperature and the sensible heat of the water vapor in the flue gas. q2 can be used as a simplified calculation formula: q2 = (3.55py +0.44) (tpy-t0) / 100 In the formula py - exhaust air excess coefficient tpy - exhaust gas temperature ()

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The Temperature in Your Boiler and the Dangers of ...

Mar 12 2014 · The average setting for a gas-powered hot water boiler is 180°F. This provides the appropriate level needed for most cold weather temperatures. If you can raise the temperature manually do not set it any higher than 210°F (which is often the limit) and

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