Influence of reference temperature on exergy and exergoeconomic performance of a natural gas fired thermal power plant Online publication date: Thu, 08-Aug-2013
by Ambrose N. Anozie; Oludare J. Odejobi
International Journal of Exergy (IJEX), Vol. 13, No. 1, 2013
Abstract: The influence of reference temperature on exergy and exergoeconomic performance parameters of a thermal plant was investigated. The plant was simulated using HYSYS (2003) process simulator software and the exergy and exergoeconomic analyses were done using Microsoft EXCEL spreadsheet. As reference temperature increased from 15°C to 35°C, exergy efficiency decreased from 11.7% to 11.5% and irreversibility increased from 1790 MW to 1812 MW. Also, overall exergy cost decreased from 6650.78 MW to 6055.40 MW and monetary cost from $75,343.84/h to $68,430.19/h. The optimum (base case) reference temperature, where the exergy and the monetary exergy loss costs were at minimum, was found to be 30°C. At this temperature both the condenser and boiler units made significant contributions to the process exergy and monetary exergy loss costs. The study concluded that the performance of the thermal plant depends on reference temperature, efficiencies of condenser and boiler units.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Exergy (IJEX):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook