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The solution is: Enthalpy of steam * flow * 2.7E-7 = Energy in MWh The enthalpy of steam is calculated by our DCS using a function block with inputs: pressure and temperature. This allows the use of the temp, pressure and flow to calculate the energy in a steam process stream.

Thanks for the feedback! Since posting this I have contacted our site DCS guys who have made a block in fb cad for this purpose!

Hi All, I have been tasked to specify a function block for our control system that uses the pressure (bar a), temperature (degC) and flow (kg s-1) to obtain a Megawatt-hours (energy) value for steam exported. I have had a look at various research papers and cant find a straight cut answer. Any...