How many cubic meters of gas can a natural gas boiler use in a day? Is there a formula?

How many cubic meters of gas can a natural gas boiler use in a day? Is there a formula?


Here is a basic calculation formula for reference: the calorific value of one side of natural gas is 8000 kcal. Take the industrial steam of 1.0MPa, 270 ℃ as an example: the boiler with 10 tons / hour evaporation capacity needs 30 GJ of heat. The boiler efficiency is calculated by 60%, which needs to burn 50 GJ of coal. The calorific value of standard coal per kilogram is 7000 kcal * 4.186