Другие журналы

scientific edition of Bauman MSTU

SCIENCE & EDUCATION

Bauman Moscow State Technical University.   El № FS 77 - 48211.   ISSN 1994-0408

Analysing the Possible Ways for Short-Term Forcing Gas Turbine Engines in Auxiliary Power Unit

# 05, May 2016
DOI: 10.7463/0516.0840406
Article file: SE-BMSTU...o103.pdf (1182.63Kb)
authors: N.I. Trotskii1,*, Kh.Kh. Khakimov1



1 Bauman Moscow State Technical University, Moscow, Russia

Using a gas turbine energy unit as an example, the article discusses possible ways for forcing the short-term gas turbine engines (GTE). The introduction explains the need for forcing the air transport and marine GTE in specific driving conditions and offers the main methods. Then it analyzes the three main short-term forcing methods according to GTE power, namely: pre-compressor water injection, a short-term rise in temperature after the combustion chamber, and feeding an additional compressed air into combustion chamber from the reserve cylinders.
The analysis of the water injection method to force a GTE presents the main provisions and calculation results of the cycle, as a function of engine power on the amount of water injected into compressor inlet. It is shown that with water injection into compressor inlet in an amount of 1% of the total airflow there is a 17% power increase in the compressor. It also lists the main implementation problems of this method and makes a comparison with the results of other studies on the water injection into compressor.
Next, the article concerns the GTE short-term forcing method through the pre-turbine short-term increase in the gas temperature. The article presents the calculation results of the cycle as a function of the power and the fuel-flow rate on the gas temperature at the turbine inlet. It is shown that with increasing temperature by 80 degrees the engine power increases by 11.2% and requires 11% more fuel. In the analysis of this method arises an issue of thermal barrier coating on the blade surface. The article discusses the most common types of coatings and their main shortcomings. It lists the main challenges and some ways of their solving when using this method to implement the short-term forcing.
The last method under consideration is GTE short-term forcing by feeding the compressed air into the combustion chamber from the additional reserve cylinders. It should be noted that this method is applied only to small-sized and auxiliary gas turbines, operating as part of gas turbine power plants in vehicles, which comprise additional compressed air cylinders. Here are calculation results as a function of the engine power and forcing time on the amount of additional compressed air fed into the combustion chamber. The article shows that in feeding the additional compressed air in the amount of 15% of the airflow the engine power in the compressor is increased by 27%. It also describes the main implementation difficulties of this method.
In conclusion, the article presents data on the considered methods for short-term forcing the GTE and shows the main difficulties in their implementation. It also comes to conclusion that the electro-generator design strength and characteristics restrict the limits of these short-term forcing methods.

References
  1. Eliseev Yu.S., Manushin E.A., Mikhal'tsev V.E., et al. Teoriya i proektirovanie gazoturbinnykh i kombinirovannykh ustanovok[Theory and desighning of gas-turbine and combined plants]. Moscow, Bauman MSTU Publ., 2000. 640 p. (In Russian).
  2. Troitskiy N.I. Using energy accumulators is the radical way for improving efficiency of ground-based vehicles with gas-turbine Engines. Vestnik MGTU im. N.E. Baumana. Ser. Mashinostroenie = Ser. Mechanical Engineering, 2014, no. 3, pp. 110-118. (In Russian).
  3. Berkovich A.L., Polishchuk V.G., Nazarenko A.V. Boosting gas turbine power plants through optimal water injection into compressor. Nauchno-tekhnicheskie vedomosti SPbGPU, 2015, no. 2 (219), pp. 33-40. (In Russian).
  4. Chaker Mustapha, Meher-Homji Cyrus B., Mee Thomas (III). Inlet fogging of gas turbine engines. Trans. ASME. J. Eng. Gas Turbinesand Power, 2004, vol. 126, no. 3, pp. 545–580.
  5. Mikhal'tsev V.E., Molyakov V.D. Raschet parametrov tsikla pri proektirovanii gazoturbinnykh dvigateley i kombinirovannykh ustanovok[Cycle parameters calculation in designing of gas turbine engines and combined plants]. Moscow, Bauman MSTU Publ., 2014. 58 p. (In Russian).
  6. Tumashev R.Z., Molyakov V.D., Lavrent'yev Yu.L. Increasing the efficiency of compressor stations at main gas pipelines. Vestnik MGTU im. N.E. Baumana. Ser. Mashinostroenie = Ser. Mechanical Engineering, 2014, no. 1, pp. 68-79. (In Russian).
  7. Molyakov V.D., Kunikeev B.A. Designing efficient turbines taking into account radial clearance. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie, 2014, no. 9 (654), pp. 9-18. (In Russian). DOI: 10.18698/0536-1044-2014-9-9-18
  8. Artemenko N. I., Simonov V. N., Trusov B.G. Thermodynamic analysis of covering blades of gas-turbine engineы made of heatproof nickel alloys with protection diffusion coatings with tantalum undercoat. Nauka i obrazovanie MGTU im. N.E. Baumana = Science and Education of the Bauman MSTU, 2013, no. 7, pp. 337-344. (In Russian). DOI: 10.7463/0713.0583284
  9. Bob Rapp. Coatings improve efficiency. Materials Today, 2006, vol. 9, no. 7–8, pp. 6. DOI: 10.1016/S1369-7021(06)71555-3
Поделиться:
 
SEARCH
 
elibrary crossref ulrichsweb neicon rusycon
Photos
 
Events
 
News



Authors
Press-releases
Library
Conferences
About Project
Rambler's Top100
Phone: +7 (915) 336-07-65 (строго: среда; пятница c 11-00 до 17-00)
  RSS
© 2003-2017 «Наука и образование»
Перепечатка материалов журнала без согласования с редакцией запрещена
 Phone: +7 (915) 336-07-65 (строго: среда; пятница c 11-00 до 17-00)