Issues with turbine power and efficiency – experts, please help
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How is the power efficiency of a turbine calculated? Is there a specific formula? Seek expert guidance... If the steam inlet parameters are known to be: 130°C, 0.2 Mpa ； Steam exhaust: 0.1Mpa 105℃ ； If the turbine speed is 4000 r/min, how can its power be calculated? Are there any other parameters needed? For example: Steam volume. If the steam volume is known, how can the power of the turbine be calculated? How is the power of the motor converted into the amount of steam? I searched on the forum and found a post related to turbine power at http://bbs.hcbbs.com/viewthread.php?tid=352338&highlight=%C6%FB%C2%D6%BB%FA%B9%A6%C2%CA. It states that \"once the power of the motor is known, it can be converted into the amount of steam, after which a turbine can be selected.\" How is the power of the motor converted into the amount of steam? And what parameters relate to this steam? Are there any specific formulas? I haven’t read many books, so I have many questions. Please don’t laugh at my mistakes, experts; I hope those who are more knowledgeable can give me some guidance. Thank you very much.
The efficiency is approximately 34.6%; the steam consumption rate is 87.45 kg/kWh. To determine the power, the amount of steam is needed – power is obtained by dividing the steam volume by the steam consumption rate.
The enthalpy values of the steam entering and leaving the turbine are determined; their difference, multiplied by the mass flow rate and then by the mechanical efficiency, gives the power of the turbine