Comparative exergo-environmental assessments of solar-based hydrogen production systems
by Tahir Abdul Hussain Ratlamwala; Ibrahim Dincer
International Journal of Global Warming (IJGW), Vol. 10, No. 4, 2016

Abstract: The present study focuses on a comparative exergo-environmental analysis of two solar-based integrated systems for hydrogen production. Two integrated systems, namely: a) solar heliostat field system integrated with Cu-Cl cycle and Kalina cycle (as system 1); b) solar heliostat field system integrated with Cu-Cl cycle, Kalina cycle and photocatalytic reactor (as system 2) are considered. A parametric study is carried out to investigate the effects of varying the selected operating parameters, such as solar light intensity and ambient air temperature on the exergo-environmental performances of these integrated systems. The results show that the environmental impact factors of systems 1 and 2 vary from 0.54 to 0.52 and 0.45 to 0.44, respectively with an increase in solar light intensity. The environmental impact indexes of systems 1 and 2 are obtained to be varying from 1.2 to 1.1 and 0.8 to 0.78, respectively, with a rise in ambient temperature. Furthermore, system 2 performs better than system 1 from an exergo-environmental perspective due to better utilisation of solar light intensity.

Online publication date: Fri, 14-Oct-2016

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