Abstract
Internal combustion engines are affected in their performance by varying atmospheric conditions, namely the atmospheric temperature, pressure and humidity. For gas turbines, however, performance correction formulae are not available as they are for gasoline engines. The purpose of this paper is to analyze the effects of atmospheric conditions on the performance of gas turbines, and to develop a theoretical correction formula by which gas turbine performance can be corrected from arbitrary atmospheric conditions to standard atmospheric conditions. In this paper, first, as a standard for comparision, the author shows the performance characteristics of three types of gas turbines under standard conditions at standard atmospheric temperature, pressure and humidity. Then he considers the performance of gas turbines under varying atmospheric conditions and, from the thermodynamic point of view, analyzes the effects of various atmospheric factors. Finally, the theoretical values obtained are compared with practical gas turbine performance data.
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