%0 Journal Article
%T Second Law Analysis of Super CritIcal Cycle
%A I.Satyanarayana
%A A.V.S.S.K.S. Gupta
%A K.Govinda Rajulu
%J International Journal of Engineering
%D 2010
%I Computer Science Journals
%X Coal is the key fuel for power generation in the Supercritical Rankine cycle. Exergy, auniversal measure has the work potential or quality of different forms of energy ofenergy in relation to a given environment. In this paper, an exergy analysis has carriedout to the supercritical power plant tells us how much useful work potential or exergy,supplied to the input to the system under consideration has been consumed by theprocess. A computer code has developed for exergy to analyses the supercritical cyclewithout reheat as well as with single reheat. The temperature and pressure inlet to theturbine and exhaust pressure from the turbine are identified as key parameters in thisanalysis. Both first law efficiency and exergetical efficiency have studied at varioustemperature and pressure inlet to the turbine. Irreversibility as well as Fractional exergyloss of all the components has also been studied. To decrease exergy loss ofsupercritical power plant, effects of pump discharge pressure increases, effects ofsteam turbine discharge pressure decreases and effects of steam temperatureincreases. First law efficiency is increases with increase in temperature at a givenpressure. Exergy efficiency is increases with increase in temperature and pressure. It isfound that both the efficiencies increases more in temperature rise than the pressurerise in the turbine inlet. Both Irreversibility and Fractional exergy losses in the boiler isreducing with increase in temperature.
%K Supercritical cycle
%K reheat
%K cycle efficiency
%K exergy efficiency and Fractional exergy loss
%U http://www.cscjournals.org/csc/manuscript/Journals/IJE/volume4/Issue1/IJE-137.pdf