Effect of the thermal insulation on generator and micro gas turbine system

Jun Su Park, Sehjin Park, Kyung Min Kim, Beom Seok Choi, Hyung Hee Cho

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The efficiency of micro gas turbine generator is affected significantly by the temperature level in the micro gas turbine system. If the operation temperature of generator and compressor increases, the efficiency of generator and compressor decreases, greatly. This study investigates the heat transfer and temperature distribution in a micro gas turbine system. In addition, the temperature levels on the substrates are controlled using the different thermal insulation materials. The thermal conductivity of insulation is changed from 0.1 to 100 to evaluate the effect of the thermal conductivity on generator and micro gas turbine. A conjugate heat transfer method has been used for this purpose. We conducted a CFD analysis in the compressor and turbine flow domains using CFX v.12 to obtain the boundary conditions for conduction calculation. The conduction analysis, using ANSYS v.12, was calculated on the solid part domain. The conduction heat transfer calculation considered the heat generation induced by the Joule heating in the generator. The results show that the most heat flux from the turbine and generator is removed by the inlet flow induced by the compressor. The conductivity of thermal insulation material has a little effect on the temperature distributions of the generator.

Original languageEnglish
Pages (from-to)581-589
Number of pages9
JournalEnergy
Volume59
DOIs
Publication statusPublished - 2013 Sep 15

Fingerprint

Thermal insulation
Gas turbines
Compressors
Thermal conductivity
Temperature distribution
Turbines
Heat transfer
Gas generators
Inlet flow
Joule heating
Heat generation
Turbogenerators
Heat conduction
Temperature
Heat flux
Insulation
Computational fluid dynamics
Boundary conditions
Substrates

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Park, Jun Su ; Park, Sehjin ; Kim, Kyung Min ; Choi, Beom Seok ; Cho, Hyung Hee. / Effect of the thermal insulation on generator and micro gas turbine system. In: Energy. 2013 ; Vol. 59. pp. 581-589.
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Effect of the thermal insulation on generator and micro gas turbine system. / Park, Jun Su; Park, Sehjin; Kim, Kyung Min; Choi, Beom Seok; Cho, Hyung Hee.

In: Energy, Vol. 59, 15.09.2013, p. 581-589.

Research output: Contribution to journalArticle

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N2 - The efficiency of micro gas turbine generator is affected significantly by the temperature level in the micro gas turbine system. If the operation temperature of generator and compressor increases, the efficiency of generator and compressor decreases, greatly. This study investigates the heat transfer and temperature distribution in a micro gas turbine system. In addition, the temperature levels on the substrates are controlled using the different thermal insulation materials. The thermal conductivity of insulation is changed from 0.1 to 100 to evaluate the effect of the thermal conductivity on generator and micro gas turbine. A conjugate heat transfer method has been used for this purpose. We conducted a CFD analysis in the compressor and turbine flow domains using CFX v.12 to obtain the boundary conditions for conduction calculation. The conduction analysis, using ANSYS v.12, was calculated on the solid part domain. The conduction heat transfer calculation considered the heat generation induced by the Joule heating in the generator. The results show that the most heat flux from the turbine and generator is removed by the inlet flow induced by the compressor. The conductivity of thermal insulation material has a little effect on the temperature distributions of the generator.

AB - The efficiency of micro gas turbine generator is affected significantly by the temperature level in the micro gas turbine system. If the operation temperature of generator and compressor increases, the efficiency of generator and compressor decreases, greatly. This study investigates the heat transfer and temperature distribution in a micro gas turbine system. In addition, the temperature levels on the substrates are controlled using the different thermal insulation materials. The thermal conductivity of insulation is changed from 0.1 to 100 to evaluate the effect of the thermal conductivity on generator and micro gas turbine. A conjugate heat transfer method has been used for this purpose. We conducted a CFD analysis in the compressor and turbine flow domains using CFX v.12 to obtain the boundary conditions for conduction calculation. The conduction analysis, using ANSYS v.12, was calculated on the solid part domain. The conduction heat transfer calculation considered the heat generation induced by the Joule heating in the generator. The results show that the most heat flux from the turbine and generator is removed by the inlet flow induced by the compressor. The conductivity of thermal insulation material has a little effect on the temperature distributions of the generator.

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