Abstract
In this paper a 2kWe small scale Organic Rankine Cycle system coupled with a concentrated solar linear Fresnel lens collector is investigated using a simulation analysis. Coupling small scale solar technologies with ORC system is a well-known solution in low temperature ranges. Efforts exist to achieve higher temperatures and overall efficiencies but at present such systems represent a challenge at small scale. This work is part of the EU funded Innova MicroSolar project about development and optimization of a solar linear Fresnel lens concentrator coupled with 2kWe Organic Rankine Cycle plant and with a PCM thermal storage system for residential applications. In this paper a preliminary assessment of the performance of two of the main components of such system (i.e. solar linear Fresnel lens collector and ORC) is presented. A dynamic analysis of the system is performed by varying the operating conditions. In particular the influence of the system configuration and working temperatures on the ORC overall efficiency is evaluated. The final aim of the work indeed is to assess the best working conditions for such micro-CHP to be integrated in residential buildings.
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