Micro Gas Turbine and Solar Parabolic Dish for distributed generation

M.J. Santos, E. Vega-Lozano, R.P. Merchán, J. García-Ferrero, A. Medina and A. Calvo Hernández




A thermodynamic model for a Brayton-like microturbine in combination with a solar parabolic dish is analyzed in order to evaluate its efficiency under any ambient condition. The thermodynamic cycle is a recuperative Brayton cycle with internal irreversibilities in the recuperator, compressor and turbine and external losses associated to the heat transfers in the solar receiver, the combustion chamber, and the environment. All the irreversibilities have been taken into account in the model with home-software elaborated using Mathematica®. The model validation is done by comparison with results
provided by Semprini et al. [1]. An analysis of hybrid and sunless performance is carried out for four different microturbine power outlets (30, 23, 15 and 7 kWe) and for four days of the year (corresponding to each season). The greenhouse emissions are also calculated for both off-design performance and for the four power output levels.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 16)
Pages: 438-443 Date of Publication: 2018/04/20
ISSN: 2172-038X Date of Current Version:2018/03/23
REF: 340-18 Issue Date: April 2018
DOI:10.24084/repqj16.340 Publisher: EA4EPQ

Authors and affiliations

M.J. Santos, E. Vega-Lozano, R.P. Merchán, J. García-Ferrero, A. Medina and A. Calvo Hernández
Department of Applied Physics. University of Salamanca. (Spain)

Key words

Solar Parabolic Dish, distributed generation, Brayton cycle, micro gas turbine, thermodynamic model.


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