International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
Analysis of Heat Dissipation in Radiator of SI Engine Prashant Reddy Kasu[1], Narendra Babu Ganesh[2], Karri Sunil Kumar[3], Kandru Naga Siva[4], Shiva Kumar Goud[5], Dollu Bhaskar[6]. [1,2,3,4,5]B.Tech
student, Department of Mechanical Engineering, K L University Guntur, Andhra Pradesh, India Professor, Department of Mechanical Engineering, K L University Guntur, Andhra Pradesh, India ---------------------------------------------------------------------***--------------------------------------------------------------------In automobile due to combustion process power Abstract - In an automobile, fuel and air produce is developed, only some amount of power is used for power within the engine through combustion. Only a moving a vehicle but remaining power is wasted for the portion of the total generated power actually supplies process of removal of exhaust gases and for the pumping the automobile with power the rest is wasted in the form etc. due to the combustion process maximum amount of of exhaust and heat. If this waste heat is not removed , temperature is developed, if the excess heat is developed the engine will become more hot, that results in there will be damage to engine components. For the overheating and viscosity breakdown of the lubricating proper lubrication of the engine parts oil should flow oil, metal weakening of the overheated engine parts, and freely at the right viscosity and temperature. These high stress between engine parts resulting in quick wear of temperatures produced in the cylinders are transferred piston rings, connecting rod etc. through the cylinder wall liners, cylinder heads, pistons In the present work quick evaluation approach and valves to the coolant by convection, in discussing to internal combustion engine’s radiator cooling system such high temperatures exposing engine metal parts to analysis is presented. Calculation and analysis of engine such high temperatures will cause them to expand cooling parameters such as fluid flow rate, effective considerably, weaken them, result in high thermal cooling surface area, coolant passage tubes and rate of stresses with reduced strength, safety concerns in heat dissipation when the density and specific heat at overheated cylinders attaining flash temperature of the constant pressure vary due to changing temperature. fuel thereby likely leading to resignation, cause The performance and efficiency of water cooling lubricating oils to evaporate rapidly leading to sticking machine applied in automobiles relies on effective heat pistons, piston rings, cylinders and eventual seizure and exchange between surrounding medium. Efficiency of damage. So we need to have a radiator in order to radiator is increased by varying the geometrical remove excess heating. Mostly for cooling of engine parameters like diameter of tubes, by varying coolants, component involved are radiator, thermostat, electric by comparing the materials. We are going to design a cooling fan, water pump, pressure cap, jackets, and hoses radiator and perform CFD analysis, compare CFD for connection radiator to engine. Function of pressure analysis and experimental analysis cap is to whenever there is a more amount of pressure Key Words: Cooling system, Engine Cooling, Heat difference water will not go down, in order to prevent lost in Radiator, water properties. this pressure cap is used, electric fan for taking of air, water pump for circulation of water, thermostat for detection of temperature of coolant and give passage, I. INTRODUCTION radiator is for cooling of coolant coming from engine and the engine temperature is taken by coolant. Radiators also called as heat exchangers designed to cool the engine with the help of a coolant. The majority of radiators are made for engine cooling in automobiles. In radiator there are two types of process happening one is natural and the other is forced convection .Convection means having a contact between solid and the medium flowing. Depending on application we choose our radiator process. Radiators are used to transfer thermal energy from one medium to another for the purpose of cooling engine. Despite the name, most radiators transfer the bulk of their heat via convection instead of Most commonly made out of aluminum, automobile thermal radiation. radiators utilize a cross-flow heat exchanger design. The [6]Assistant
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