IJSRSET20510125 | Received : 05 May 2019 | Accepted : 20 May 2019 | May-June-2019 [ 6 (3) : 405-413] © 2019 IJSRSET | Volume 6 | Issue 3 | Print ISSN: 2395-1990 | Online ISSN : 2394-4099 Themed Section : Engineering and Technology DOI : https://doi.org/10.32628/IJSRSET20510125 405 Exergy Analysis of Captive Power Plant Dr. Rakesh Patel 1 , Dr. P. V. Ramana 2 1 Head, B & B Institute of Technology, Vallabh Vidyanagar, Gujarat, India 2 Head & Professor, Sardar Vallabhbhai Patel Institute of Technology, Vasad, Gujarat, India ABSTRACT Energy sector is one of the important areas in the economic development of any country. Meeting the growing demands at acceptable costs in various sectors like industries, commercial, transport etc. is challenge to energy planner. The present work is an account of energy and exergy losses and distribution in Heat Exchanger of captive power plant of M/S Vardhaman Acrylics ltd, Jhagadia, Bharuch, Gujarat, India. This plant consists of 5.5 MW turbine-generator set with two extraction points which supply the heat energy to meet process demand. The steam is generated in 142 TPH capacity 45 kg/cm2 pressure, atmospheric pressure fluidized bed combustion boiler supplied by M/S Thermax Babcock & Wilcox Ltd,Pune ,India. The complete energy & exergy analysis of Heat Exchanger is carried out based on massive data collection over a period of three months. The energetic and exergetic losses of various components & suggestion for improving energetic & exergetic efficiency of the plant form core of this work. Keywords : Energy, Exergy, Heat Exchanger, Captive Power Plant, Sankey diagram, energetic efficiency, exergetic efficiency I. INTRODUCTION The realization that world’s energy resources are finite and depleting at fast rate, have simulated interest in the efficient use of existing resource. The renewed interest has led to greater emphasis on the concepts & principles of thermodynamics to improve industrial process efficiency. The energy analysis gives only energy consumption and energy losses of systems. It does not provide information about internal inefficiency of equipment. The exergy analysis, when applied to process or a whole plant tells us how much is the usable work potential or exergy supplied as input to the system & consumed by process or plant. The loss of exergy or irreversibility provides quantitative measure of process inefficiency. The concept of availability and exergy are concerned with a special type of system, the combined system made up of the control mass and its environment, and the maximum work which can be performed by it. When the control mass passes from its initial state to one in which it is in thermal and mechanical equilibrium with the environment, then there can be no spontaneous change within the control mass or within the environment is called the restricted dead state. Analysis of multicomponent plant (like combined cycle power plant, captive power plant) based on this concept indicates the total plant irreversibility distribution, pinpointing those components contributing most to overall plant inefficiency. Such an estimate can help in planning the future course of action in energy system design. The feasibility of