To calculate gas consumption of industrial heaters, you need to know the heater's thermal output, the fuel's calorific value, and the system efficiency. The basic formula is:
Gas Consumption (m³/h) = Output (kW) ÷ (Calorific Value × Efficiency)
Natural gas typically has a calorific value of 8.6–10.5 kWh/m³. Efficiency varies between 70–95% depending on the heater design. Accurate sizing and operational estimates are essential for cost and performance optimization.