0
Research Papers: Power Engineering

Micro Gas-Turbine Design for Small-Scale Hybrid Solar Power Plants

[+] Author and Article Information
Lukas Aichmayer

e-mail: lukas.aichmayer@energy.kth.se

James Spelling

e-mail: james.spelling@energy.kth.se

Björn Laumert

e-mail: bjorn.laumert@energy.kth.se

Torsten Fransson

e-mail: torsten.fransson@energy.kth.se
Department of Energy Technology,
KTH Royal Institute of Technology,
Stockholm SE-100 44, Sweden

1Corresponding author.

Contributed by the Power Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 9, 2013; final manuscript received July 18, 2013; published online September 17, 2013. Editor: David Wisler.

J. Eng. Gas Turbines Power 135(11), 113001 (Sep 17, 2013) (11 pages) Paper No: GTP-13-1246; doi: 10.1115/1.4025077 History: Received July 09, 2013; Revised July 18, 2013

Hybrid solar micro gas-turbines are a promising technology for supplying controllable low-carbon electricity in off-grid regions. A thermoeconomic model of three different hybrid micro gas-turbine power plant layouts has been developed, allowing their environmental and economic performance to be analyzed. In terms of receiver design, it was shown that the pressure drop is a key criterion. However, for recuperated layouts, the combined pressure drop of the recuperator and receiver is more important. In terms of both electricity costs and carbon emissions, the internally-fired recuperated micro gas-turbine was shown to be the most promising solution of the three configurations evaluated. Compared to competing diesel generators, the electricity costs from hybrid solar units are between 10% and 43% lower, while specific CO2 emissions are reduced by 20–35%.

Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

First commercial hybrid solar micro gas-turbine power plant at Kibbutz Samar, Israel [9]

Grahic Jump Location
Fig. 2

Open-cycle hybrid solar MGT

Grahic Jump Location
Fig. 3

T–s diagram of the open-cycle hybrid solar MGT, pressure losses have been exaggerated for emphasis

Grahic Jump Location
Fig. 4

Internally-fired recuperated hybrid solar MGT cycle

Grahic Jump Location
Fig. 5

T–s diagram of the internally-fired recuperated hybrid solar MGT cycle

Grahic Jump Location
Fig. 6

Externally-fired recuperated hybrid solar MGT cycle

Grahic Jump Location
Fig. 7

T–s diagram of the externally-fired recuperated hybrid MGT cycle

Grahic Jump Location
Fig. 8

Flow sheet of initial hybrid solar MGT design strategy for selection of the pressure ratio

Grahic Jump Location
Fig. 9

Flow sheet of the sensitivity study for the solar component parameters

Grahic Jump Location
Fig. 10

Flow sheet of the modeling strategy used in the thermoeconomic analysis

Grahic Jump Location
Fig. 11

Heat transfer model of the closed volumetric solar receiver

Grahic Jump Location
Fig. 12

Effectively used thermal power in the receiver for different solar multiples

Grahic Jump Location
Fig. 13

LCoE and specific CO2 emissions as a function of the pressure ratio

Grahic Jump Location
Fig. 14

Conversion efficiency as a function of the pressure ratio

Grahic Jump Location
Fig. 15

Annual solar share as a function of the pressure ratio

Grahic Jump Location
Fig. 16

Investment cost breakdown for the MGT designs

Grahic Jump Location
Fig. 17

Relative conversion efficiency as a function of the combined absolute pressure drop

Grahic Jump Location
Fig. 18

LCoE and specific CO2 emissions as a function of the receiver outlet temperature and the fuel price

Grahic Jump Location
Fig. 19

Solar share as a function of the receiver outlet temperature

Grahic Jump Location
Fig. 20

Solar share as a function of the solar multiple

Grahic Jump Location
Fig. 21

LCoE and specific carbon dioxide emissions as a function of the solar multiple and the fuel price

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In