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Research Papers: Gas Turbines: Microturbines and Small Turbomachinery

The Thermal Impact of Using Syngas as Fuel in the Regenerator of Regenerative Gas Turbine Engine

[+] Author and Article Information
Luciana M. Oliveira

Department of Mechanical Engineering, Itajubá Federal University (UNIFEI/NEST), 37500-903 Itajubá MG, Brazilluciana@unifei.edu.br

Marco A. R. Nascimento

Department of Mechanical Engineering, Itajubá Federal University (UNIFEI/NEST), 37500-903 Itajubá MG, Brazilmarcoantonio@unifei.edu.br

Genésio J. Menon

Department of Mechanical Engineering, Itajubá Federal University (UNIFEI/NEST), 37500-903 Itajubá MG, Brazil

J. Eng. Gas Turbines Power 132(6), 062301 (Mar 18, 2010) (8 pages) doi:10.1115/1.4000125 History: Received April 08, 2009; Revised April 24, 2009; Published March 18, 2010; Online March 18, 2010

Environment and energy are driven forces of human survival and development. Nowadays the use of primary energy comprises mostly mineral fuels, which have limited reserves and whose utilization may cause serious environmental impacts. Attention has been paid to discover clean and renewable resources such as syngas, which is an important renewable source of energy and is environment friendly. The use of syngas from biomass gasification process as fuel in regenerative gas turbine causes an increase in turbine exhaust mass flow and a change in the gas composition due to a low heat value. As a result, the regenerator changes its size, thermal characteristics, weight, and cost compared with the use of natural gas as fuel. The aim of this work is to assess the thermal performance, the size, and the cost of the recuperator of a 600 kW regenerative gas turbine engine when designed for syngas and natural gas. Two different types of surfaces, cross-corrugated and undulated-corrugated, are used for analysis. The results are shown, comparing heat-transfer coefficient, effectiveness, pressure loss, size, and cost for syngas and natural gas.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Cross-corrugated surfaces

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Figure 2

Cross-undulated surface

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Figure 3

Regenerative turbine arrangement

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Figure 4

Unitary cell (perspective view)

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Figure 5

Total relative pressure drop

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Figure 7

Cube-shaped recuperator concept (3)

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Figure 8

Recuperator size using the CC2.2–60 surface: (a) length and (b) width

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Figure 9

Recuperator size using the UCS–30 surface: : (a) length and (b) width

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Figure 10

Matrix recuperator weight

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Figure 11

Recuperator cost for CC2.2-60

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Figure 12

Recuperator cost for UCS-30 surface

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Figure 13

Overall heat-transfer coefficient

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