When purchasing a gas boiler, gas consumption is an important indicator for evaluating the quality of the gas boiler, and it is also an important issue that users are more concerned about. This data will directly determine the cost of the enterprise’s investment in boiler operation. So how should the gas consumption of a gas boiler be calculated? Today we will briefly explain how many cubic meters of natural gas is needed for a gas steam boiler to produce one ton of steam.
The known gas boiler gas consumption calculation formula is:
Hourly gas consumption of gas steam boiler = gas boiler output ÷ fuel calorific value ÷ boiler thermal efficiency
Taking the Nobeth membrane wall series as an example, the boiler thermal efficiency is 98%, and the fuel calorific value is 8,600 kcal per cubic meter. Normally, 1 ton of water needs to absorb 600,000 kcal of caloric value to turn into water vapor. Therefore, 1 ton of gas The boiler output is 600,000 kcal, which can be obtained according to the formula:
Gas consumption of 1 ton gas boiler per hour = 600,000 kcal ÷ 98% ÷ 8,600 kcal per cubic meter = 71.19m3
In other words, for every ton of water vapor produced, about 70-75 cubic meters of natural gas are consumed. Of course, this method only calculates the boiler gas consumption under ideal conditions. The boiler system may also produce certain losses, so only a rough estimate can be made. Although the results are not very accurate, they can basically reflect the performance of the boiler.
From the above formula, it can be found that the amount of steam produced by a gas boiler of the same tonnage per cubic meter of natural gas is mainly affected by the heat value and purity of the fuel, the thermal efficiency of the boiler, and is also closely related to the operating level of the stoker.
1. Fuel calorific value. Because the quality of natural gas supply in different regions is different, the quality of gas boilers is different, the amount of mixed air is different, and the low calorific value of gas is also different. The gas consumption calculation of a gas boiler should clearly define the thermal efficiency value of the gas boiler. If the thermal efficiency of the boiler is high, its gas consumption will be reduced, and vice versa.
2. Thermal efficiency of the boiler. When the calorific value of the fuel remains unchanged, the gas consumption of the boiler is inversely proportional to the thermal efficiency. The higher the thermal efficiency of the boiler, the less natural gas used and the lower the cost. The thermal efficiency of the boiler itself is mainly related to the boiler heating surface, boiler convection heating area, exhaust gas temperature, etc. Professional boiler suppliers will reasonably design according to the actual needs of users and increase the heating surface of each part of the boiler without increasing the resistance of the boiler. Reasonably control the exhaust gas temperature, reduce heat energy loss, and help users greatly reduce the daily operating costs of gas boilers.
3. The operating level of the stoker. The operating level of the boiler not only affects the gas consumption of the boiler system, but also determines whether the boiler can operate safely. Therefore, relevant national departments stipulate that all boilers must have a boiler certificate. This is responsible for users, boilers, and society. Performance.
For more questions related to gas boilers, please feel free to consult Nobeth, and professionals will provide you with one-on-one service.
Post time: Dec-13-2023
