What is the calculation standard of boiler feedwater enthalpy value?

With the continuous development of economy, as the main heat energy equipment, industrial boilers are widely used. This article discusses the calculation standard of boiler feedwater enthalpy value.

To know how to calculate the enthalpy value of boiler feed water, first of all, we must know what enthalpy means. Enthalpy, that is, the amount of heat contained in steam or water per kilogram, in units of J(kJ)/g(Kg) and kcal/kg.

The boiler feed water enthalpy can be calculated according to the feed water temperature (℃bai)×4.18(kJ/kg.℃), for example, if the feed water temperature is 30℃, the enthalpy is 30×4.18≈125.4 kJ/kg, and the error will not exceed 2%.