Published Paper Details:

ABSTRACT: In the present industrial globalization, thermal control or heat removal process from the hot surface (where cooling is essential) is very important issue, because the quality and reliability of the parts and components is dependable on the operating temperature. Now days we are using other methods such as cooling fans, direct water flow over the surfaces in some processes in some industries which are not the effective techniques. Spray cooling processes are known to yield high heat transfer coefficients due to high heat rates associated with latent heat at absorption during liquid vapor phase transition of the spray cooling methods which are employed in current electronics cooling applications. Heat transfer enhancement is one the major parameters required to improve the performance of the thermal system in any industries such as Electronics, Aerospace, Automotive and steel manufacturing. Jet impingement cooling and spray impingement cooling are two of the most effective ways to improve the rate of heat transfer from the hot metal surface spray. Impingement cooling helps to achieve desired cooling rates from the surface by appropriate parametric control during the cooling process. Hence this process finds its use in many cooling application in particular to metal processing industry. Different Industrial applications required high heat removal rate in order to provide efficient cooling for reliable working and its operational life. There are different ways to achieve uniform cooling .1.Microchanel Cooling, 2. Jet impingement cooling, 3. Spray impingement cooling. Out of these three methods Spray cooling have some advantages like low fluid inventory, Compact in size, light weight with few moving components, uniformity of cooling and isothermally. Due to the above mentioned advantages spray finds their use for cooling in number of industrial applications for example: HVAC, Laser guided weapons, Supersonic Flights, Agriculture, Cooling of super computers and many others. In the spray cooling properties under consideration are the different nozzle operating pressure, effect of mass flux, effect of surface enhancement, cooling effect, optimisation of various enhance surface with respect to nozzle diameter fluid properties under consideration and experimental investigations are thermal conductivity of liquid, surface tension of liquid, specific heat of liquid, latent heat of vaporization and lastly Calorimeter design properties are: super heat of heater, surface wet ability surface size, thermal diffusivity of subtract. It can be concluded that parameter which are the most significant parameter and sub significant parameters further used to these parameters to optimize and the considered parameters on heat transfer coefficient (HTC) using impingement spray cooling. To achieve more cooling effect it is very necessary that penetration of working fluid should be high. So to increase the penetration we mix a little amount of surfactant in fluid by which surface tensial property of fluid decreade and good penetration can be obtained.