«Proceedings of Gubkin University»

Methodology of determining air temperature at inlet branch pipe of axial compressor of gas turbine plant

UDC: 621.438:697.922.25
DOI: -

Authors:

¹ National University of Oil and Gas “Gubkin University”, Moscow, Russian Federation

Keywords: gas turbine plant, axial compressor, inlet air filter unit, air inlet path, air-duct, sound noise attenuator, cycle air, "harmful" local heating of the air, cooling system

Annotation:

The problem of reducing the output characteristics of gas turbine units operating at elevated ambient temperatures remains very relevant for compressor stations located in the southern regions of the Russian Federation. To calculate and select an effective cyclic air-cooling system it is necessary, first of all, to have data on the required final temperature of the cooled air and the parameters of the air entering the suction device of the axial compressor. The authors of the article have proven that the temperature of the cycle air entering the suction pipe of an axial compressor depends not only on the climatic and physical-geographical conditions of the area where gas turbine units are operated. When determining the actual air temperature, one should take into account such factors as the design and installation features of the air supply system, the relative position of the suction and exhaust ducts of the gas turbine unit at the production site of the compressor station. A calculation method is proposed that considers the influence of “harmful” local air heating on the air supply temperature, as well as total pressure losses in the main elements of the air intake tract: filters of an integrated air purification device, an anti-icing system, a silencer, vertical and horizontal sections, and air duct outlets. The presented methodology is recommended by the authors of the article for use in the design and selection of cycle air cooling systems for gas turbine units.

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