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Evaluation of desiccant wheel and prime mover as combined cooling, heating, and power system
, Article International Journal of Green Energy ; Volume 16, Issue 3 , 2019 , Pages 256-268 ; 15435075 (ISSN) ; Saidi, M. H ; Najafi, M ; Aghanajafi, C ; Sharif University of Technology
Taylor and Francis Inc
2019
Abstract
In this research heating, cooling and electrical demands of a residential tower are evaluated for Iran various weather conditions. For this purpose, several cities are selected as the representative of the specific weather conditions. To meet the cooling demand, desiccant cooling system plus alternative systems are applied. To analyze desiccant wheel, outlet humidity and temperature have been modeled. Also, the effect of rotational speed and regeneration temperature on entropy generation of the desiccant wheel has been studied based on the obtained results. It is deduced that the entropy generation may be increased by increasing the regeneration temperature and the rotational speed. To...
Second law based analysis of supplementary firing effects on the Heat Recovery Steam Generator in a combined cycle power plant
, Article ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, ESDA2010, 12 July 2010 through 14 July 2010, Istanbul ; Volume 1 , 2010 , Pages 201-209 ; 9780791849156 (ISBN) ; Rasoulipour, S ; Sharif University of Technology
2010
Abstract
The supplementary firing is one of the techniques which are used to increase the output power of the combined cycle power plants (CCPP). The low construction cost per generated power encourages designers to consider it in the new CCPP. In this paper the thermal and exergy analyses of HRSG for various operating conditions in variation of loads and variation of ambient temperature carried out. They are based on the performance test data at different operating conditions. The objective of these analyses is to present the effects of supplementary firing on gross power output, combined cycle efficiency and the exergy loss in Heat Recovery Steam Generator (HRSG) devices at different ambient...