Before calculating the gas consumption of a gas-fired boiler, we should first understand how to calculate the gas consumption of the gas-fired boiler and what factors affect the gas consumption. The determinants of gas consumption of gas-fired boilers are: boiler heating area, fuel calorific value, fuel purity, boiler convective heating area, boiler radiant heating area and Stoker's skills.
Rated power of boiler and calorific value of gas. Use the formula: gas quantity = rated power of boiler * time / calorific value of gas / boiler efficiency.
Determine the specification of gas-fired boiler, such as 1t, 2T, etc., followed by the thermal resistance of boiler heating surface. According to these two conditions, we can determine the heat loss of gas-fired boiler. Through the obtained heat loss value, we can further obtain the thermal efficiency. Through the thermal efficiency, we can obtain the total enthalpy value according to the total capacity multiplied by the parameters, and then multiply the total enthalpy value of gas by the thermal efficiency, The obtained value is divided by the total enthalpy of the medium. This value is the gas consumption information of the gas boiler per unit time we need.
Calculate according to the heat formula.
The power of 2-ton gas-fired boiler is 1.4mw (1400kW), and the calorific value of fuel is 35.53mj/nm3 (known by Baidu). Generally, the calorific value utilization rate of gas-fired boiler is 88% - 90%. Therefore, we can get the formula: gas boiler gas consumption (per hour) = gas boiler work / boiler rate * time / fuel calorific value / gas boiler calorific value utilization rate = 1.4mw * 3600s / 35.53mj / Nm3 / 88% = 161m ³/ h。
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