A low-temperature (<120 °C) solar organic Rankine cycle (ORC) power generation experimental facility is designed and built. The influence of light intensity on the system performance is investigated using the experimental facility. The results indicate that the system efficiency can reach 2.2%. The temperature of heat transfer fluid (HTF) decreases linearly with light intensity (I). However, both system efficiency and thermoelectric efficiency first decrease linearly and then drop sharply as I decreases at working fluid flow rates (Vwf) of 200 and 160 L/hr, while they only decrease slightly with I at Vwf of 120 L/hr. The light intensity of the turning point is 824 W/m2 at Vwf of 200 L/hr, which corresponds to an HTF temperature of 75 °C. In addition, it is found that the influence of light intensity on the performance of ORC becomes stronger for higher working fluid flow rate. Moreover, the light intensity and HTF temperature at the turning point increase with working fluid flow rate. The experimental results are of great significance for the design and operation of low-temperature solar ORC power generation system.
Experimental Study of the Influence of Light Intensity on Solar Organic Rankine Cycle Power Generation System
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received August 17, 2015; final manuscript received May 3, 2016; published online May 25, 2016. Assoc. Editor: Mary Jane Hale.
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Wang, Y., Tang, L., and Weng, Y. (May 25, 2016). "Experimental Study of the Influence of Light Intensity on Solar Organic Rankine Cycle Power Generation System." ASME. J. Sol. Energy Eng. August 2016; 138(4): 044502. https://doi.org/10.1115/1.4033593
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