EFFECT OF THE VARIABLE USE WORKING FLUID HEAT PIPE FOR COOLING CPU

TESIS

Abstract

By : Muhammad Rizal Sugiyono

Email : reezal1984@gmail.com

Faculties : Fakultas Teknik

Department : S1 Teknik Mesin

Technological developments in computerized systems and downsizing the dimensions on computer processors will have an impact on a significant increase in heat flux, and no longer effective when using conventional cooling. Therefore, the purpose of research in the use of heat pipe system stratified by using the working fluid distilled water, alcohol 70% and 95% alcohol is expected to provide one solution to solve the problem of high heat flux emergence on the CPU. Heat pipe is a tool that has worked in a two-phase system, heat pipe performance is much greater than with conventional cooling. In the study carried out by testing the heat pipe working fluid is terraced with variations such as distilled water, alcohol 70% and 95% alcohol, using capillary axis of a screen mesh allumunium 100 mesh, and using the heatsink as a means of releasing heat to the air. From research shows the use of working fluids could affect performance heat pipe straight-storied, because of the difference in boiling point working fluid, where the use of alcohol 95% were able to provide good results with the imposition of a maximum 46.22 watts with a temperature gradient between the evaporator and condenser 2 for 17,931oC, better than the use of distilled water with a temperature gradient of 70% alcohol 15,628oC and temperature gradient reaches 16,772oC with the same loading is 46.22 watts.

Keyword : Heat pipe, wick, working fluid, screen mesh

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