TY - JOUR
T1 - Experimental analysis and numerical validation of the solar Dish/Stirling system connected to the electric grid
AU - Mendoza Castellanos, Luis Sebastián
AU - Galindo Noguera, Ana Lisbeth
AU - Carrillo Caballero, Gaylord Enrique
AU - De Souza, André Leandro
AU - Melian Cobas, Vladimir Rafael
AU - Silva Lora, Electo Eduardo
AU - Venturini, Osvaldo José
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/5
Y1 - 2019/5
N2 - The use of solar-powered Stirling engines to convert thermal energy into electricity is a promising and renewable technological solution that can contribute to reducing dependence on fossil fuels for electricity generation. Unfortunately, the lack of experimental performance data and operating parameters for this type of technology limits its detailed characterization, difficult its modeling and design and consequently its utilization. This paper aims to validate the mathematical model of the Dish/Stirling system previously published by Mendoza et al. (2017) with the TRINUM system, installed at the Federal University of Itajubá-Brazil. For nominal conditions, the Dish/Stirling system generates an electric power of 1.00 kW at a solar irradiation of 725 W/m2 with a system overall efficiency of 17.6%. The results show that for solar irradiance values between 520 and 950 W/m2 the experimental tests and the results of the mathematical modeling do not present considerable differences, obtaining an electric power of 1089 kWe and an efficiency of 17.98%, which represents deviations in the range of 2%–12%.
AB - The use of solar-powered Stirling engines to convert thermal energy into electricity is a promising and renewable technological solution that can contribute to reducing dependence on fossil fuels for electricity generation. Unfortunately, the lack of experimental performance data and operating parameters for this type of technology limits its detailed characterization, difficult its modeling and design and consequently its utilization. This paper aims to validate the mathematical model of the Dish/Stirling system previously published by Mendoza et al. (2017) with the TRINUM system, installed at the Federal University of Itajubá-Brazil. For nominal conditions, the Dish/Stirling system generates an electric power of 1.00 kW at a solar irradiation of 725 W/m2 with a system overall efficiency of 17.6%. The results show that for solar irradiance values between 520 and 950 W/m2 the experimental tests and the results of the mathematical modeling do not present considerable differences, obtaining an electric power of 1089 kWe and an efficiency of 17.98%, which represents deviations in the range of 2%–12%.
KW - Energy conversion
KW - Numerical validation
KW - Solar concentrator
KW - Solar energy
KW - Stirling engine
KW - Thermal analysis
UR - http://www.scopus.com/inward/record.url?scp=85059308465&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2018.11.095
DO - 10.1016/j.renene.2018.11.095
M3 - Artículo Científico
AN - SCOPUS:85059308465
SN - 0960-1481
VL - 135
SP - 259
EP - 265
JO - Renewable Energy
JF - Renewable Energy
ER -
