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Experimental and Thermoeconomic Analysis of Small-Scale Solar Organic Rankine Cycle (SORC) System

School of Mechanical Engineering, Pusan National University, Busan 609–735, Korea
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Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Entropy 2015, 17(4), 2039-2061; https://doi.org/10.3390/e17042039
Received: 31 January 2015 / Revised: 19 March 2015 / Accepted: 31 March 2015 / Published: 7 April 2015
(This article belongs to the Special Issue Exergy: Analysis and Applications)
A small-scale solar organic Rankine cycle (ORC) is a promising renewable energy-driven power generation technology that can be used in the rural areas of developing countries. A prototype was developed and tested for its performance characteristics under a range of solar source temperatures. The solar ORC system power output was calculated based on the thermal and solar collector efficiency. The maximum solar power output was observed in April. The solar ORC unit power output ranged from 0.4 kW to 1.38 kW during the year. The highest power output was obtained when the expander inlet pressure was 13 bar and the solar source temperature was 120 °C. The area of the collector for the investigation was calculated based on the meteorological conditions of Busan City (South Korea). In the second part, economic and thermoeconomic analyses were carried out to determine the cost of energy per kWh from the solar ORC. The selling price of electricity generation was found to be $0.68/kWh and $0.39/kWh for the prototype and low cost solar ORC, respectively. The sensitivity analysis was carried out in order to find the influencing economic parameters for the change in NPV. Finally, the sustainability index was calculated to assess the sustainable development of the solar ORC system. View Full-Text
Keywords: SORC; ORC; solar energy; exergy; thermoeconomic; sustainable development; economic analysis; sensitivity analysis SORC; ORC; solar energy; exergy; thermoeconomic; sustainable development; economic analysis; sensitivity analysis
MDPI and ACS Style

Baral, S.; Kim, D.; Yun, E.; Kim, K.C. Experimental and Thermoeconomic Analysis of Small-Scale Solar Organic Rankine Cycle (SORC) System. Entropy 2015, 17, 2039-2061.

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