Publication detail

CFD Designing of the micro turbine recuperator

HEJČÍK, J. JÍCHA, M.

Czech title

CFD návrh rekuperátoru spalin

English title

CFD Designing of the micro turbine recuperator

Type

conference paper

Language

en

Original abstract

For high-speed micro gas turbine plants for electrical power and heat generation, a recuperator is needed to obtain a high thermal efficiency. The recuperator receives heat from the exhaust gas and preheats the compressor discharge air before it enters the combustion chamber. Such plants contribute to an ecological and environmental-friendly energy production. (Muley, Sundén, 2003) This paper deals with the computer modelling of the recuperator where a commercial Computational Fluid Dynamics (CFD) code STAR-CD is being used for this purpose. The first part of the paper shows CFD ability to appreciate various heat transfer surfaces. Three different surfaces (cross corrugated surface, dimpled and rifled tube) are selected, modelled and compared. Next part of this paper describes the CFD evaluation of the required recuperator efficiency (92 percent). The last part of the paper considers simulations of the inlet/outlet manifolds where two construction variants are modelled and contrasted. Simulation results obtained are presented and discussed.

Czech abstract

Rekuperátor spalin je klíčovým kompentem malých turbínových zdrojů. Rekuperátor odebírá teplo spalinám a přivádí jej stlačenému vzduchu před jeho vstupem do spalovací komory. Tím dochází ke zvýšení účinnosti celého zařízení. Příspěvek se zabývá počítačovým návrhem teplosměnných ploch rekuperátoru spalin s využitím CFD kódu STAR-CD. V první části článku jsou prováděny srovnání vlastností tří rozdílných teplosměnných ploch. V další části článku jsou pomocí CFD metodiky porovnány různé konstrukce vstupních úseků rekuperátoru spalin. Poslední část článku popisuje způsob ověření návrhu rekuperátoru spalin s účinností 92%. Všechny publikované výsledky simulací jsou diskutovány.

English abstract

For high-speed micro gas turbine plants for electrical power and heat generation, a recuperator is needed to obtain a high thermal efficiency. The recuperator receives heat from the exhaust gas and preheats the compressor discharge air before it enters the combustion chamber. Such plants contribute to an ecological and environmental-friendly energy production. (Muley, Sundén, 2003) This paper deals with the computer modelling of the recuperator where a commercial Computational Fluid Dynamics (CFD) code STAR-CD is being used for this purpose. The first part of the paper shows CFD ability to appreciate various heat transfer surfaces. Three different surfaces (cross corrugated surface, dimpled and rifled tube) are selected, modelled and compared. Next part of this paper describes the CFD evaluation of the required recuperator efficiency (92 percent). The last part of the paper considers simulations of the inlet/outlet manifolds where two construction variants are modelled and contrasted. Simulation results obtained are presented and discussed.

Keywords in Czech

rekuperátor, CFD, mikroturbína, voštinový výměník

Keywords in English

Recuperator, CFD, Microturbine, cross corrugated duct

RIV year

2005

Released

01.01.2005

Publisher

CEA-Grenoble

Location

Grenoble, Francie

ISBN

2-9502555-0-7

Book

Heat Transfer in Components and Systems for Sustainable Energy Technologies, Proceedings of the Heat-SET 2005 conference

Volume

1

Pages count

8

BIBTEX


@inproceedings{BUT21231,
  author="Jiří {Hejčík} and Miroslav {Jícha},
  title="CFD Designing of the micro turbine recuperator",
  booktitle="Heat Transfer in Components and Systems for Sustainable Energy Technologies, Proceedings of the Heat-SET 2005 conference",
  year="2005",
  volume="1",
  month="January",
  publisher="CEA-Grenoble",
  address="Grenoble, Francie",
  isbn="2-9502555-0-7"
}