Abstract
One of the promising trends to increase the fuel and energy efficiency of gas turbines is contact cooling of cyclic air by using a twophase jet apparatus – an aerothermopressor. The rational parameters of work processes of the aerothermopressor were studied. The experimental setup was designed to simulate the aerothermopressor operation in the cooling air cycle of the gas turbine and to determine pressure losses in the aerothermopressor flow part. Based on the obtained experimental data, an empirical equation was proposed to determine the hydraulic resistance coefficient of the aerothermopressor flow part, depending on the initial pressure and the amount of water injected. The deviation of the calculated hydraulic resistance coefficient from the experimental ones is ± 25 %. The obtained results can be used in the practice of designing the aerothermopressor for gas turbine cyclic air cooling.
Highlights
To bring the process of compressing air in gas turbine compressors closer to isothermal ones the complex schemes with cyclic air cooling are usually used [1, 2]
The installation of the aerothermopressor in the gas turbine cyclic air cooling system is proposed in accordance with the scheme (Fig. 1) [11]
With an increase in water flow rate gw, pressure losses increase by 2-4%, and when the initial pressure decreases from 300 to 150 kPa, the effect of the amount of injected water gradually decreases
Summary
To bring the process of compressing air in gas turbine compressors closer to isothermal ones the complex schemes with cyclic air cooling are usually used [1, 2]. It results in increasing the fuel and energy efficiency [3, 4]. One of the promising trends is contact cooling of cyclic air [5, 6]. An effective water dispersed atomization in the air flow occurs in the aerothermopressor This ensures efficient evaporation of the water dispersed flow in the flow part of the gas turbine compressor bringing the compression process closer to isothermal
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