Thermodynamic Data for the Calculation of Gas Turbine Performance

摘要

The essential features of a practical method of determining gas turbine performance are that it shall be suitable for accurate routine calculation, and that it is capable of simple modification in order to deal with a range of fuels or with complex cycles. It is the opinion of the authors that the exactitude of the method should also be demonstrable, within the limits imposed by the scales employed, and that it should require only the use of parameters physically intelligible to the average engineer, and a sequence of operations which can be followed by a computer. The calculation should not, moreover, be onerous, involving the use of large or complex charts, or interpolation in tables.nExperience has shown that cycle analysis is most efficiently carried out by numerical evaluation of the energy change involved in each stage of the process, so that corrections for plant efficiency and for losses due to friction, to imperfect combustion, to the use of air for cooling, etc., may be applied as they occur, and the data presented are selected with this in mind.