IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 06 Issue: 07 | Jul-2017, Available @ http://www.ijret.org 38 EFFECT OF DIFFERENT NANOFLUIDS ON PERFORMANCE OF SHELL AND TUBE HEAT EXCHANGER: A REVIEW Swapnil S. Kamthe 1 , Shivprakash B. Barve 2 1 Post graduate student, Department of Mechanical Engineering, MAEER’s MITCOE, Pune 411038, Maharashtra 2 Professor, Department of Mechanical Engineering, MAEER’s MITCOE, Pune 411038, Maharashtra, India Abstract Shell and tube heat exchanger is widely used in many application. Increased performance and efficiency are the most demanding need in today’s world. Working fluid like nanofluid with high heat transfer coefficient can be a promising alternative to the existing system. Itshould possess the height thermal conductivity, low viscosity, high specific heat, and stability. This paper discusses the review work on the uses of the nanofluid to increase the performance of shell and tube heat exchanger. The effect of different material with different base fluid has been presented with different nanoparticle shape on the performance of exchanger and on the thermal properties of working fluid has been presented. Some of the literature shows contradictory results it is concluded that the combination of ZnO and W nanofluid gives the best performance among other which has presented due to its high thermal conductivity and low viscosity. Turbulence region shows best result compare with laminar and high-pressure drop compared with it. Cylinder shape shows the better performance among considered shapes in literature. Nanoparticle should be suspended in base fluid for the long term uses which is the biggest limitation of it in a real-time application. Keywords: Concentration, Heat transfer coefficient, Nanofluid, Pressure drop and Shell and tube heat exchanger etc. --------------------------------------------------------------------***---------------------------------------------------------------------- 1. INTRODUCTION In heat exchanger heat is transfer from the higher to lower temperature difference and transfer of heat is an important aspect of the heat transfer application. In shell and tube one fluid is passed through shell and one through shell. The efficiency is depending upon the amount of transfer heat and mode of heat transfer. Heat is transfer from hot to cold fluid through wall max heat can transfer based on the heat transfer coefficient of transferring medium and the thermal conductivity of material. Effectiveness shows the capability of maximum heat transfer for a given area. Increase in efficiency and effectiveness are the great concern in today’s scenario. To increase efficiency heat transfer between small temperature should be increased this can be done by increasing the efficiency of the working fluid. Efficient fluid possesses properties like high convection coefficient on which the heat transfer of fluid is depend, low viscosity and high thermal conductivity. Number of experimental investigation has been done on the enhancement of the thermal properties of working fluid [1, 2]. In heat exchanger working fluids main property for the heat transfer application as convection coefficient depends upon the thermal conductivity of that particular material. Number of research’s done to increase the conductivity by using additions of some additives in it [1]. Research also available for increase in heat transfer coefficient with minimum pressure drop for different baffles [3]. Suspended material particle having high conductivity in fluid is one of the enhancement technique. There are two types of particles are there like micro scale and nano scale. Micro scale particle having limitation like suspension problem and clogging of flow channel. Particle can be metallic or non-metallic depends upon its application and property. Nanoparticle size particle is first studied by Argonne National Laboratory [4]. Nanoparticle have better thermos physical property than micro sized particle use of it in heat transfer application would be a great advantage. Generally, it having size 100nm below of it [5]. Fluid which contain nano sized particle in it is called as nanofluid, due to its properties it enhanced the property of base fluid also overcome the clogging effect. If we compare it with conventional fluid it having high surface area and better thermal properties. Keblinski presented the review of nanofluids properties and its future challenges, due to its ability to suspend and stability in liquid it can be a promising way to use in heat transfer application [6]. In this paper, different nanofluids are reviewed based on literature and available data and its use in shell and tube heat exchanger specifically, also effect of different parameter on performance of fluid. 2. DIFFERENT NANOFLUIDS In this different nanoparticle materials review is done separately. Nanofluid with same material and different base fluid can have different property based on base fluid. 2.1 Aluminum Oxide Aluminum oxide (Al2O3) having density 3690 kg/m 3 and specific heat of 880 J/kg k. different study are available on the use of this in shell and tube exchanger. One of this presented by Ramtin Barzegarian. In this base fluid as a water is used. Experimental investigation is done with segmentally operated baffle in heat exchanger.15 nm and