About half a century ago, the initial steam parameters of the smaller 30 MW Thermal Power - Generator Sets being manufactured then, in India. were kept low at 865 lbs./ sq. in, absolute or 61 ata pressure absolute approximately and 900 degrees Fahrenheit or 482.2 degrees centigrade temperature approximately. These initial steam pacameters were kept far below the critical steam parameters at 225.6 ata pressure and 374.15 degrees centigrade temperature. These parameters are known as the critical pressure and temperature,of the steam.
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