Exergy Analysis of a Subcritical Reheat Steam Power Plant with Regression Modeling and Optimization
Journal Title: Mehran University Research Journal of Engineering and Technology - Year 2016, Vol 35, Issue 3
Abstract
In this paper, exergy analysis of a 210 MW SPP (Steam Power Plant) is performed. Firstly, the plant is modeled and validated, followed by a parametric study to show the effects of various operating parameters on the performance parameters. The net power output, energy efficiency, and exergy efficiency are taken as the performance parameters, while the condenser pressure, main steam pressure, bled steam pressures, main steam temperature, and reheat steam temperature isnominated as the operating parameters. Moreover, multiple polynomial regression models are developed to correlate each performance parameter with the operating parameters. The performance is then optimizedby using Direct-searchmethod. According to the results, the net power output, energy efficiency, and exergy efficiency are calculated as 186.5 MW, 31.37 and 30.41%, respectively under normal operating conditions as a base case. The condenser is a major contributor towards the energy loss, followed by the boiler, whereas the highest irreversibilities occur in the boiler and turbine. According to the parametric study, variation in the operating parameters greatly influences the performance parameters. The regression models have appeared to be a good estimator of the performance parameters. The optimum net power output, energy efficiency and exergy efficiency are obtained as 227.6 MW, 37.4 and 36.4, respectively, which have been calculated along with optimal values of selected operating parameters.
Authors and Affiliations
Muhib Ali Rajper, Abdul Ghafoor Memon, Khanji Harijan
On (Non) Applicability of a Mode-Truncation of a Damped Traveling String
This study investigates a linear homogeneous initial-boundary value problem for a traveling string under linear viscous damping. The string is assumed to be traveling with constant speed, while it is fixed at both ends....
Bringing Shape to Textual Data – A Feasible Demonstration
The Internet has revolutionized the communication paradigm. This has led towards immense amount of unstructured data (i.e. textual data), which is a major source to get useful knowledge about people in several applicatio...
Cyber Threats/Attacks and a Defensive Model to Mitigate Cyber Activities
Nowadays, every internet user is part of cyber world. In this way, millions of users, knowledge seekers, and service provider organizations are connected to each other, a vast number of common people shifted their everyd...
Selective Leaching of Steel Pollutant Element from Dilband Iron Ore, Pakistan
Dilband Iron ore of Pakistan is lean grade ore which contains sufficient amount of phosphorous bearing mineral called fluorapatite. Since phosphorous is widely acknowledged as steel pollutant and disturbs the blast furna...
Assessment of Home made Liquor "Tharra" Quality by GC-FID and its Potential Impacts on Human Health
The unsafe use of alcohol causes many diseases that lead to social and economic burden in societies. In Pakistan due to limited access, inflated prices of standard alcohol and ban on use of alcoholic products for Muslims...