Open AccessEnergy-Exergy Analysis of Combined Reheating-Regenerative Rankine Cycle using Entropy Generation Principle
Author(s) -
Kaushalendra Kr Dubey*,
R. S. Mishra
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.c5008.098319
Subject(s) - exergy , economizer , rankine cycle , process engineering , exergy efficiency , boiler (water heating) , organic rankine cycle , degree rankine , thermal efficiency , condenser (optics) , waste heat , electricity generation , combined cycle , waste heat recovery unit , environmental science , power station , feedwater heater , nuclear engineering , waste management , turbine , steam electric power station , engineering , mechanical engineering , thermodynamics , chemistry , power (physics) , heat exchanger , optics , combustion , light source , physics , organic chemistry , electrical engineering
The growing attention towards the exergy analysis of thermal systems is identifying the cause of losses, to scale the process, and rectifying the components. In this paper, the thermodynamic (energy-exergy) analysis of combined reheating and regeneration based Rankine Cycle is carried out. The energy-exergy analysis has been established for the boiler, turbines, Feed heaters, condenser and pump majorly. The result of thermodynamic analysis is estimeted in terms of 42% of plant thermal efficiency, 70 % of steam generation unit efficiency (Economizer. Super heater), Maximum heat absorbed by economizer of plant as 39% is achieved, with 40TPH of coal consumption. Boiler, High Pressure Turbine, Intermediate Pressure Turbine, Super Heater have found best performance in analysis and Reheating-Regenerative rankine method improves 6-8% in thermal efficiency also. This analysis concluded that energy efficiency is greater than exergy efficiency which identifies the power plant utilities and further improvement for efficient power generation opportunities like waste heat recovery technology employment.