IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684, p-ISSN : 2320–334X PP 44-50 www.iosrjournals.org International Conference on Recent Innovations in Civil & Mechanical Engineering 44 | Page [i- CAM2K16] DOI: 10.9790/1684-16053034450 Investigation on Performance of Shell and Tube Heat Exchanger with Assorted Baffle Parameters Levicus John 1 , Khasim Sharif Sk 2, D.Jagadish 3 , K. Phaneendra Kumar 4 1 (Assistant professor, Mechanical Department, CMRTC/ JNTUH, India) 2 (Assistant professor Mechanical Department, CMRTC/ JNTUH, India) 3 (professor, Mechanical Department, VFSTR, India) 4 (professor& principal, Mechanical Department, VLITS, India) Abstract: Shell and Tube heat exchangers (STHXs) are extensively used in the ever growing process industry requirements. With the advancement in the technology used in the STHXs we have seen a tremendous use of the helical baffles to improve the heat transfer performance. From varying angles to sizes and shapes of the helical baffles our priority is mainly to compare and study the performance improvements from segmental baffles to helical baffles. In this paper an experimental setup has been made for both Shell and Tube heat exchangers with segmental baffles (STHXsSB) and Shell and Tube Heat exchangers with Helical Baffles (STHXsHB). The helical baffles used here are discontinuous-helical baffles. The widely used Bell-Delaware method is used to validate the experimental data. Keywords: Baffles, Blade Angle, Heat exchanger, helical baffles, pressure drop I. Introduction Ever since the industrial revolution in the Eighteenth century we have been ultimately dependent on Energy. Energy however comes in various forms broadly classified as high grade energy and low grade energy, high grade energy being Electricity and the low grade energy being other various forms of energy such as Heat energy. Low grade energy may be available to us and it is our responsibility to utilize it efficiently especially when energy sources are being depleted at a very high rate on this planet. Every bit of energy which is being wasted is without doubt useful to us. Keeping this in mind we see an important study in heat exchangers which deals with low grade energy that is heat energy or in other words Thermal energy[1]. Thermal energy loss in the process industry is a significant issue due to the high temperatures and multiple heat intensive processes involved. High-grade thermal energy is typically recovered within processes. However, lower grade heat is often rejected to the environment. The benefits of capturing and utilizing low grade thermal energy are highly dependent on the qualities and properties of the heat in the waste streams. The temperature of the low grade heat stream is the most important parameter, as the effective use of the residual heat or the efficiency of energy recovery from the low grade heat sources will mainly depend on the temperature difference between the source and a suitable sink [2]. 1.1. HEAT EXCHANGERS A heat exchanger is a device used to transfer heat between two or more fluids. The fluids can be single or two phase and, depending on the exchanger type, may be separated or in direct contact. Devices involving energy sources such as nuclear fuel pins or fired heaters are not normally regarded as heat exchangers although many of the principles involved in their design are the same. Figure-1.Heat exchanger  Front end–this is where the fluid enters the tube side of the exchanger.  Rear end–this is where the tube side fluid leaves the exchanger or where it is returned to the front header in exchangers with multiple tube side passes.  Tube bundle–this comprises of the tubes, tube sheets, baffles and tie rods etc. to hold the bundle together.  Shell—this contains the tube bundle.