Open AccessInfluence of cooling air selections on the efficiency of a gas turbine installation
Author(s) -
И. И. Мубараков,
А. Б. Шигапов
Publication year - 2020
Publication title -
izvestiâ vysših učebnyh zavedenij. problemy ènergetiki
Language(s) - English
Resource type - Journals
eISSN - 2658-5456
pISSN - 1998-9903
DOI - 10.30724/1998-9903-2020-22-4-16-23
Subject(s) - gas compressor , gas turbines , turbine , work (physics) , overall pressure ratio , thrust specific fuel consumption , combustion , power (physics) , compression ratio , mechanical engineering , automotive engineering , real gas , environmental science , idle , fuel efficiency , compression (physics) , nuclear engineering , computer science , mechanics , engineering , thermodynamics , internal combustion engine , physics , chemistry , organic chemistry , operating system
A gas turbine installation (GTI) consists of 5 main parts: an input device, a compressor, a combustion chamber, a gas turbine, and an output device. In this work, due to the lack of sufficiently extensive information about stationary GTI, data from the characteristics of aviation GTI were partially used. The GTI operation efficiency is influenced by many factors, among which, apparently, the determining factor is the degree of air compression in the compressor π К . Of course, the compression ratio depends on the design scheme of the gas turbine, the type of fuel, the climatic conditions of operation, and others. The most important operational parameter of the GTI is the effective power N P and specific fuel consumption b ud . The article provides a numerical analysis of the effect π К on N P and b ud under variations in the temperature of gases at the turbine inlet T 3 , as well as the influence of other factors, including the selection of part of the air for cooling high-temperature surfaces of the structure. The conclusions were made based on the calculations, the results of which are shown in the tables, and in the comparison graphs of obtained results.