31Jan 2017

STUDY ON COOLING OF AUTOMOBILES USING AIRJET IMPINGEMENT.

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Cooling has always been a difficulty faced in the automobile sector. High elevated temperatures have to be achieved and thus there is a requirement for high grade cooling in automobiles. In addition to that, other components in mechanical sector like, gas turbines, compressors, flywheels, etc all require an extensive cooling mechanism. The major contributing factor in any cooling system is the coolant fluid and the heat transfer surface area from which the heat is rejected. The general challenge when concerned with fabrication of any component is its surface finish. Not all surfaces have a smooth contour. Hence, in our project, we will be performing an experimental study on the cooling rate of a metallic component using air impingement cooling. Air impingement cooling is a procedure where, high pressure air is used as a coolant fluid over the whole surface to be cooled. Due to surface finish being a concern, the experiments will be carried out on a copper plate with a rough surface. The major advantage however with a rough surface is the increase in effective heat transfer surface area. The conventional cooling methods include-Air Cooling or Oil cooling at the domestic level. To improve on this, we would like to explore the more advanced process called Impingement cooling. Impingement cooling has the distinctive advantage of being more effective and provides with higher heat transfer rates. It is a common process that is used in the cooling of gas turbine blades and other high temperature, high precision components. Jet impingement is an attractive cooling mechanism due to the capability of achieving high heat transfer rates. This cooling method has been used in a wide range of industrial applications such as annealing of metals, cooling of gas turbine blades, cooling in grinding processes and cooling of photovoltaic cells. Jet impingement has also become a viable candidate for high-powered electronic and photonics thermal management solutions and numerous jet impingement studies have been aimed directly at electronics cooling.The set up includes a copper plate which acts as the metal body (Rough surface), an air compressor?s blow off which serves as the Air impinger. The copper plate contains equal spaced holes which makes it a rough surface. This rough surface is then heated using the furnace. Then, the experiment is then conducted by using the Air compressor. At equal intervals of time, the temperature is measured. The experiment is repeated for natural convection too. The temperatures are measured using an IR gun (Infra Red gun). Temperatures are seen for both Natural convective cooling and Impingement cooling and a graph is plotted. Then, the results are deducted.

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[Kiran Kumar Ventrapragada and Sai Nikhil Mudunuri. (2017); STUDY ON COOLING OF AUTOMOBILES USING AIRJET IMPINGEMENT. Int. J. of Adv. Res. 5 (Jan). 2529-2553] (ISSN 2320-5407). www.journalijar.com

Kirankumar

DOI:

Article DOI: 10.21474/IJAR01/3042      
DOI URL: https://dx.doi.org/10.21474/IJAR01/3042

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