期刊
SOLAR ENERGY
卷 139, 期 -, 页码 337-354出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2016.10.001
关键词
Renewable energy; Solar energy; Concentrating Solar Power; Parabolic dish; Micro gas turbine
This paper investigates the coupling of parabolic dish concentrator with air micro gas turbine engine (net power output equal to 32.9 kW(el)). With the aim of increasing the conversion efficiency of the incoming solar radiation, a high temperature system (up to 1100 degrees C) has been considered: this solution implies the adoption of a ceramic expander coupled with a high temperature indirectly-irradiated solar receiver. A flexible Matlab (R) suite has been developed for the plant sizing and for the part-load simulation; in addition, the model is able to handle general solar field configurations through the computation of reciprocal shading effect. The obtained yearly sun-to-electric efficiency (26.48%) reveals the energetic advantage over other CSP technologies that can mitigate the technological issues and consequently higher investment cost, related to high operating temperatures. The potential of a hybrid version of the dish is also discussed. (C) 2016 Elsevier Ltd. All rights reserved.
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