Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 124280, 10 pages
Research Article

Modeling Small Scale Solar Powered ORC Unit for Standalone Application

1Università degli Studi Guglielmo Marconi, Via Plinio 44, 00193 Roma, Italy
2Università degli Studi della Tuscia, Via Gradi n.4, 01100 Viterbo, Italy
3Enertecna s.r.l., Via della Polveriera 14, 00184 Roma, Italy

Received 17 October 2012; Accepted 15 November 2012

Academic Editor: Maurizio Carlini

Copyright © 2012 Enrico Bocci et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


When the electricity from the grid is not available, the generation of electricity in remote areas is an essential challenge to satisfy important needs. In many developing countries the power generation from Diesel engines is the applied technical solution. However the cost and supply of fuel make a strong dependency of the communities on the external support. Alternatives to fuel combustion can be found in photovoltaic generators, and, with suitable conditions, small wind turbines or microhydroplants. The aim of the paper is to simulate the power generation of a generating unit using the Rankine Cycle and using refrigerant R245fa as a working fluid. The generation unit has thermal solar panels as heat source and photovoltaic modules for the needs of the auxiliary items (pumps, electronics, etc.). The paper illustrates the modeling of the system using TRNSYS platform, highlighting standard and “ad hoc” developed components as well as the global system efficiency. In the future the results of the simulation will be compared with the data collected from the 3 kW prototype under construction in the Tuscia University in Italy.