Design of a 400 KW Gas Turbine Prototype

Ahti Jaatinen-Varri, Janne Nerg, Antti Uusitalo, Behnam Ghalamchi, Nikita Uzhegov, Alexander Smirnov, Eerik Sikanen, Aki Grönman, Jari Backman, Matti Malkamäki

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

9 Citations (Scopus)


Decentralized power and heat generation is a growing trend throughout the world. In smaller applications, electrical power output less than few megawatts, reciprocating engines have dominated the market. In recent years, small sized gas turbines have emerged as challengers for the reciprocating engines. The small gas turbines have a growing share of the decentralized energy market, which itself is rapidly growing. Hence, improvements in small gas turbine efficiency have a significant impact from the economic and environmental perspective. In this paper, the design of a high efficiency 400 kW gas turbine prototype is described and discussed. The prototype is a two-spool, recuperated and intercooled gas turbine where both spools comprise of a radial compressor and turbine, a permanent magnet electric generator, an axial and two radial active magnetic bearings and two safety bearings. The prototype design was divided into five categories and each of the categories are discussed. The categories were: The process design, the turbomachinery design, the generator and electrical design, bearing design and rotor dynamic analysis, and mechanical design. The design of recuperator, intercooler, and combustion chamber were outsourced. Hence, they are not discussed in this paper. The prototype design process showed the readiness of the chosen technological selections, as well it showed that the type of machine under discussion can be designed and manufactured.

Original languageEnglish
Title of host publicationMicroturbines, Turbochargers and Small Turbomachines; Steam Turbines
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791849866
Publication statusPublished - 1 Jan 2016
MoE publication typeA4 Article in a conference publication
EventASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, GT 2016 - Seoul, Korea, Republic of
Duration: 13 Jun 201617 Jun 2016


ConferenceASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, GT 2016
Country/TerritoryKorea, Republic of


Dive into the research topics of 'Design of a 400 KW Gas Turbine Prototype'. Together they form a unique fingerprint.

Cite this