Sorohin F. The gas turbine drives based on converted aircraft engines efficiency improving by cycled air cooling

Object – processes of the cyclic air cooling at the entrance of the gas turbine drive; goal – gas turbine drives based on converted aircraft engines efficiency improving by substantiating the choice of the cycled air cooling system and its management during operation on the basis of the method for calculation of the gas turbine drive efficiency, which takes into account the performances of the gas turbine drive and other elements of a power plant, climatic conditions, cost of equipment and used resources; methods – methods of air breathing engines theory, methods of thermodynamics, methods of statistical processing of data, experimental methods for parameters determination; results – the proposed method made the usage of the spraying system with pneumatic atomizers for gas turbine drives on the basis of D-336 and AI-336 series at high temperature of atmospheric air possible the relation to determine flow boundary value of water through the spraying system of the preliminary cooling of the gas-path air of the gas turbine drive, which determine the mode of the system operating that in its turn corresponds to a simultaneous growth of power and fuel efficiency of the power plant was established; novelty – the method to calculate the efficiency of a gas turbine drive with preliminary cooling system of the gas path air was essentially improved by taking into account the performances of the gas turbine drive and other elements of a power plant, climatic conditions, cost of equipment and used resources, which as well allows subjecting the selection of type, main parameters of the cooling system on the basis of maintenance conditions of the power plant and determine the technical and economic indicators in these conditions, for the first time it was justified to use the specific reduction of air temperature at the inlet of a gas turbine drive as an indicator of the switch to the “wet” compression mode in the compressor, which in its turn makes the control of water injection in the system of the preliminary cooling of the gas-path air simpler and improves control quality; the degree of implementation – implemented in the JSC «Motor Sich» during the development of spray cooling system of the gas-path air for the test cell and the gas turbine electric station; field of application – power engineering.