Life Cycle Exergy Analysis of Solar Energy Systems

Journal of Fundamentals of Renewable Energy and Applications

article

Mei Gong¹  Göran Wall² 

[1] School of Business and Engineering, Halmstad University;Oxbo gard

关键词: Exergy analysis;    Sustainable development;    Life cycleanalysis;   

DOI  :  10.4172/2090-4541.1000146

来源: Ashdin Publishing

【 摘 要 】

Exergy concepts and exergy based methods are applied to energy systems to evaluate their level of sustainability. Life Cycle Exergy Analysis (LCEA) is a method that combines LCA with exergy, and it is applied to solar energy systems. It offers an excellent visualization of the exergy flows involved over the complete life cycle of a product or service. The energy and exergy used in production, operation and destruction must be paid back during life time in order to be sustainable. The exergy of the material that is being engaged by the system will turn up as a product and available for recycling in the destruction stage. LCEA shows that solar thermal plants have much longer exergy payback time than energy payback time, 15.4 and 3.5 years respectively. Energy based analysis may lead to false assumptions in the evaluation of the sustainability of renewable energy systems. This concludes that LCEA is an effective tool for the design and evaluation of solar energy systems in order to be more sustainable.

【 授权许可】

Unknown