Design of an Experimental Device for the Analysis of the Influence of Sound Waves on the CPU Cooling Process - Part II
Abstract
The article describes the calibration procedures and the creation of a series of initial data packages as a basis for comparative experiments in the process of increasing the efficiency of CPU air cooling in the case of commonly available types of coolers. It then describes the course of the experiment, the input parameters and the data obtained from the calibration of the basic model at different power settings of the fan mounted on the DeepCool AG200 air cooler. The output of the article is a model of cooling performance based on fan speeds and ambient operating temperature.
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Introduction
With the development of CPUs and with the annual increase in their computing power, there is also an increase in the amount of heat generated during their operation. The heat generated during CPU operation is one of the limiting factors of their maximum computing performance. To remove heat from the surface of the CPU, various methods were gradually introduced, from passive aluminium coolers to coolers with forced air flow provided by a fan, to water circuits that transport the generated heat using a heat-carrying medium to larger coolers located outside the CPU area, where the heat is removed to surroundings. Increasing the area of water coolers results in taking up larger areas on the computer case. This procedure of enlarging the heat exchange surface is unsuitable for portable PCs. For this reason, there has recently been a re-development of air coolers with heat pipes, where there is an effort to increase their performance using methods of disrupting the boundary layer of the flowing air in the ribs, to increase the removal of heat to the surroundings.
Conclusion
The creation of a comparison and calibration model is an essential basis when dealing with increasing the efficiency of CPU cooling using air cooling devices. Without the creation of a reliable comparative model against which it would be possible to relate the results measured during the process of increasing the efficiency under different operating conditions, it is not possible to accurately determine the change in cooling performance due to the use of innovative methods of increasing the cooling performance.