excellent course in gas turbine (part 2) -TECHNICAL PRINCIPLES OF GAS TURBINES.
TECHNICAL PRINCIPLES OF GAS TURBINES FIRST: WORKING PRINCIPLES OF GAS TURBINES SECOND: TURBINE OPERATION FIRST WORKING PRINCIPLES OF GAS TURBINES INTRODUCTION: Gas turbines are considered as a heat engine working according to thermodynamic cycle of constant pressure. Air is used as the working medium in the majority of practical applications, where it is compressed and heated up then expanded. From thermodynamic point of view, it is possible to prove that the work taken from air or exerted on it, at high temperature levels, is higher than that at low temperature levels. Therefore, it is possible to obtain a quantity of work from the turbine during expansion stage of the cycle higher than the work exerted during compression. The difference is sufficient to overcome all different sources of losses in addition to a huge quantity as output power used in different purposes. As it is possible to add heat to the cycle by burning the fuel internally in the working medium...