[Katkade, 3(12): December, 2014] ISSN: 2277-9655 Scientific Journal Impact Factor: 3.449 (ISRA), Impact Factor: 2.114 http: // www.ijesrt.com © International Journal of Engineering Sciences & Research Technology [165] IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY A Review: Fin and Tube Heat Exchanger Performance with different Fin Pattern S D Katkade*, J H Bhangale, D D Palande *ME Student Mechanical Engineering Dept, MCERC, Nasik, India Associate Prof. & HOD Mechanical Engineering Dept, MCERC, Nasik, India Associate Prof. , Mechanical Engineering Dept, MCERC, Nasik, India Abstract Various methods are used to increase rate of heat transfer without affecting much the overall performance of the system. These techniques are used in heat exchangers. Heat exchangers are used in various applications in day to day life. Some of the applications of heat exchangers are-in process industries, thermal Power plants, air- conditioning equipments, refrigerators, radiators for space vehicles, automobiles etc. The present paper is a review of the various methods used to increase the heat transfer performance by using different types of fins. The performance of different fin types is evaluated at different Reynolds number, fin pitch, number of tube rows etc. Keywords: heat exchanger, fins, friction factor, pressure drop. Introduction Heat exchanger is a basic component in industrial system involving the process of heat transfer Improved design fins are used as a effective way to improve the performance of heat exchanger. Heat exchangers are widely used in air-conditioning, refrigeration, processing industry. Compact heat exchangers are also used in automobile industries, radiators, evaporators, condensers, and charge air coolers. In these applications, the heat transfer performance is normally limited by the thermal resistance on the air side of the heat exchangers. Fins are also used in cooling of electronic components and gas turbine blades. In these applications, fins are used in simple designs such as rectangular, triangular, parabolic, annular, and pin rod fins or complicated designs such as spiral fins. The objective of this study is to investigate the characteristics of air-side heat transfer for fin-tube heat exchangers with different types of fins. The j- factors of the spiral-type circular fin-tube heat exchangers were measured by varying the fin pitch, number of tube rows, and fin alignment. In addition, the present study aims to propose air-side heat transfer correlations(j-factors) for spiral-type circular fin tube heat exchangers based on a very reliable database as a function of the Reynolds number, number of tube rows, and dimensionless fin pitch normalized by the hydraulic diameter. Review of work carried out L.H. Tang, M. Zeng, Q.W. Wang [1] have investigated characteristics of air-side heat transfer and friction of five kinds of fin-and-tube heat exchangers (crimped spiral fin, plain fin, slit fin, fin with delta-wing longitudinal vortex generators and mixed fin), with the 12 number of rows and the diameter of tubes 18 mm ,with Reynolds number ranging from 4000- 10000. It was found that crimped spiral fin shows the excellent results for heat transfer compared to other fins. Fig 1.Crimped spiral fin[1] Fig 2.Plain fin[1]