India is a nation with a diverse economy that requires tremendous resources to completely meet the desires of its compatriots in various sectors. In terms of energy resources and requirements, coal-based power plants can fulfill the bulk of these electricity needs. India is very reliant on coal, which is used in power plants as a primary energy source. However, the usage of coal energy at a higher level continuously pollutes the atmosphere. The Indian power market alone accounts for half of the country’s CO2 emissions, which implies that significant action is needed to contain environmental pollution. Carbon Capture and Storage (CCS) is a bridging technique and feasible alternative for the carbon fired plant processing of CO2. However, the application of CCS in coal-fired power stations is still uncommon in the nation. At the UNFCCC Paris Summit, India committed to reduce its carbon emission intensity by approximately 30–33% by 2030. In this work, several CCS systems, possible CO2 origins, and emission levels in India are discussed. Various advanced methods for CO2 capture and separation are also highlighted. Furthermore, the current work discusses CCS situations and the applications of CCS in India along with its manifold challenges.
Increasing the performance of a Heat Recovery Steam Generator (HRSG) through efficient utilization of energy associated with flue gases coming out of gas turbines in combined cycle power plants is finding a significant place in research. Amongst different approaches the second law analysis is well suited for finding out the loss of exergy at various locations, its type, and magnitude. Such information is of use in the design of new HRSG technologies and to reduce the inefficiencies in existing HRSGs. This paper presents the exergy analysis of the HRSG for calculating exergy losses, heat transfer and pressure losses for different physical components. Study indicates that various sub sections of heat recovery steam generator having different physical parameters like fin density, fin thickness, fin height, tube diameter and fin spacing show a noticeable effect on exergy loss minimization.
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