Vibration Performance Evaluation of Economizer Tubes by Rapping Force Using FEA Approach Akshaykumar D. Divate 1 ,Dr. Sanjay S. Lakade 2 , 1,2 Mechanical Engineering Department Pimpri Chinchwad college of engineering, Pune, India. akshay.divate0@gmail.com,sslakade65@gmail.com May 23, 2018 Abstract Economizers are mechanical devices intended to perform useful functions such as preheating a fluid. Usually preheat- ing of fluid is done by burning different air fuel mixtures. The burnt gases contain suspended soot particles. These soot particles are collected on economizer tube. So the ef- fectiveness of economizer is affected. Periodic cleaning of tubes plays a major role. Soot gets deposited on tubes and dislodged by means of vibration of economizer tubes. These vibrations are given by externally applied force i.e. rapping force. The rapping force is produced by rapping mechanism at different location. So the vibration analysis will be done by FEA. The results of FEA are discussed to formulate the relation between rapping force and geometrical variables for economizer tubes of boiler. Key Words :Economiser tubes, Rapper, Vibration anal- ysis, FEA. 1 International Journal of Pure and Applied Mathematics Volume 118 No. 24 2018 ISSN: 1314-3395 (on-line version) url: http://www.acadpubl.eu/hub/ Special Issue http://www.acadpubl.eu/hub/