Cascade system using both trough system and dish system for power generation

Zhang, C. ; Zhang, Y. ; Arauzo, I. (Universidad de Zaragoza) ; Gao, W. ; Zou, C.

Resumen: This paper represents a novel solar thermal cascade system using both trough and dish systems for power generation. An effective structure using the condensed fluid of Rankine cycle to cool the Stirling engines to use the heat released by Stirling engines was proposed. The cascade system model with different fluid circuits was developed. The models of some important components of the system, such as dish collector, trough collector and Stirling engine array, are presented with detail explanation in this paper. Corresponding stand-alone systems were also developed for comparison. Simulations were conducted with the models to find out efficiency difference between cascade system and corresponding stand-alone systems. The directions to increase the efficiency difference were also considered. Results show that the cascade system can achieve a higher efficiency with a high solar irradiance (>550 W/m2). The flow type of fluids between heating and cooling Stirling engine array is also required to concern on designing a cascade system with Stirling engine array.

Idioma: Inglés

DOI: 10.1016/j.enconman.2017.03.073

Año: 2017

Publicado en: Energy Conversion and Management 142 (2017), 494-503
ISSN: 0196-8904

Factor impacto JCR: 6.377 (2017)

Categ. JCR: ENERGY & FUELS rank: 11 / 97 = 0.113 (2017) - Q1 - T1
Categ. JCR: THERMODYNAMICS rank: 2 / 59 = 0.034 (2017) - Q1 - T1
Categ. JCR: MECHANICS rank: 3 / 134 = 0.022 (2017) - Q1 - T1

Factor impacto SCIMAGO: 2.537 - Energy Engineering and Power Technology (Q1) - Renewable Energy, Sustainability and the Environment (Q1) - Nuclear Energy and Engineering (Q1) - Fuel Technology (Q1)

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Máquinas y Motores Térmi. (Dpto. Ingeniería Mecánica)