Calculation of energy losses in the steam transmission process
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I would like to ask everyone how to calculate the energy losses during the transportation of 3.82 MPa, 450°C superheated steam using 12Cr1MoV seamless steel pipes, with a steam flow rate of 20 T/hr, for power generation purposes. I seek help from experts to answer this question
Calculate the pipe resistance and temperature drop; based on the temperature drop, the pressure drop can be used to determine the enthalpy drop, and by knowing the enthalpy drop, the energy loss can be determined. This actually depends on the distance over which you transport steam through the pipes. If the pipe diameter is chosen to be larger and better insulation is used, the losses will be relatively small.
Thank you for your answer. Is there a specific formula for this?
20*1000*（steam enthalpy）-20*1000*（steam enthalpy at the user end）= available heat energy. To determine the steam enthalpy at the user end, it is first necessary to calculate the pressure drop due to the pipe diameter; once this is known, the pressure at the user end can be determined. As for the temperature, a rough estimate of a decrease of 5-10 degrees Celsius will suffice.