Power Efficiency of the Gas Turbine Drive of an AI-336 set with the Spraying-Type Cycle Air Cooling System
DOI:
https://doi.org/10.20998/2078-774X.2017.11.09Анотація
One of the main drawbacks of any gas turbine drive (GTD) is a decrease in its power and the effective efficiency with an increase in the ambient temperature. The air cooling eliminates to a great extent the above negative consequences. Spraying-type cooling systems (SCS) are considered to be the most promising choice from the available range of cooling systems, especially for the seasonaloperation with regard to capital expenditures and operating costs. Pneumatic nozzles have certain advantages for them. An important condition for the realization of the SCS for many gas turbine drives including those of D-336 and AI-336 sets is the absence of any structural changes in their flow part. Therefore, this scientific paper studies the preliminary cycle air cooling system. At the same time "the wet compression" in the compressor is also possible for the drops sprayed prior to entering the gas turbine drive, when the conditions for their full evaporation have not been provided yet. The margins for the appropriate use of such modes of the evaporation cooling and their effect on the efficiency indices of the GTD cannot be defined carrying out no integrated rig tests. The values achieved for the gain in power and effective efficiency of the GTD, the influence of shield grids of complex air scrubber (CAS) on these indices and the contribution of air moistening to a reduction in the emission of nitrogen oxides were defined experimentally. The advantages and the areas for the use of SCS with the full evaporation of drops prior to entering the compressor have been substantiated.Посилання
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