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Hybrid PC Cooling. Joseph Sanches Philip Modin. Background. Computer enthusiasts often push their system’s performance to its limits. Exceeding default settings causes excessive heat buildup, which may cause components to fail. Problem Statement. - PowerPoint PPT Presentation
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Hybrid PC CoolingJoseph Sanches
Philip Modin
Background Computer enthusiasts often push their
system’s performance to its limits. Exceeding default settings causes excessive heat buildup, which may cause components to fail.
Problem Statement A lack or malfunction of proper cooling
may cause permanent damage to computer components. A powerful and reliable solution is needed to meet the demands of the high end user community.
Initial Research Articles Patents Solutions
How Liquid Cooled PCs Work
Article Summary:› The article lists five major components of liquid cooling a computer, as
well as an introduction to the concept and references to alternatives to liquid cooling a computer. The five major components of liquid cooling a computer are broken down into heat sinks, parts, pumps and radiator, reservoirs and tubing, and coolant liquid.
Article Critique: › The article was written very well and the author cited their sources very
well. The article covered the concept well, but could have gone into more specifics, especially with materials and methods. The article was helpful, and the sources cited may prove to be useful in later stages of the project.
Attack Path:› Technical
Article in APA Citation format: › Wilson, T. (n.d.). How liquid-cooled pcs work. Retrieved from
http://computer.howstuffworks.com/liquid-cooled-pc.htm
Mineral Oil Cooled PC Article Summary:
› A custom computer company, Puget Systems, built a computer that was submerged in mineral oil as its primary cooling system. The article provides performance data and the company’s justification for constructing the project. It was formatted much like a lab report would be formatted; there was an intro with their thesis of what they predicted would happen followed by their procedures and performance result. A conclusion was written that accounted for any externalities that could have affected the project and what they would have done differently.
Article Critique:› The article provided useful information regarding the performance of the
system. It provided pictures which helped explain many of the concepts, and prove its legitimacy. Good primary source document.
Attack Path:› Technical
Article in APA Citation format: › Bach, J. (2007, May 7). Mineral oil cooled pc.Retrieved from
http://www.pugetsystems.com/submerged.php
Computer Cooling Fan Vibration Isolation Apparatus
Patent: 5208730 Filed: October 28, 1992 Awarded May 4, 1993 Inventor: Mark S. Tray Assignee: Compaq Computer Corporation Houston, TX Purpose: Isolates fan vibration from case and other components.
Converging Cooling Duct for a Computer Cooling System
Patent: 6587335 Filed: June 3, 2000 Awarded: July 3, 2010 Inventors: Daryl J. Nelson; Steve J. Loflnad; Eric J. Salskov Assignee: Intel Corporation Purpose: Draw in cool air from outside to cool a component.
Compact High Power Personal Computer with Improved Air Cooling System
Patent: 5218514 Filed: Jul 10, 1992 Awarded: Jun 8, 1993 Inventors: Duy Q. Huynh; Prabhakara R. Vadapalli Assignee: International Business Machines Corporation Armonk, N.Y. Purpose: Arrange the computer component layout so that air can easily travel from front to back while using a minimal amount of fans. 5218514
Liquid Cooling Pros› Extremely effective› Aesthetics
Cons› Inefficient› Moving parts› Fluid needs to be replaced› Expensive
Passive Pros
› Silent› No electricity required
Cons› Can’t cool demanding hardware› Large size
Fan Controller Cards Pros› Alarm to alert critical temperature› Support about 5 fans
Cons› Do not control pumps› Use 5.25” bays or PCI slots
Decision Analysis Must and Nice to Have Sketched Solutions Decision Analysis Specifications
Must & Nice to HaveMUST HAVES NICE TO HAVE
Keep components at low temperature
Minimal power consumption
Quiet operation Competitive with
current market price
Simple assembly/installation
Lightweight Small No potentially
dangerous leaks No regular input cost Aesthetically Pleasing
Heat Pipe Net HPN
Heat Sink Cooling Head HSCH
Heat Sink
Liquid Gas Heat Pipe Heat Sink Hybrid LGHPHSH
Decision Matrix
SpecificationsCustomer Requirements Design Solution FeatureMaximum noise level of 35 dB
Silent heat sink
Maximum CPU heat level of 60° Celsius
Large surface area to dissipate thermal energy
Low maintenance Optional use of tap water and cheaply available dry ice.
Consumer price below $65 Simple design for ease of manufacture
Low power consumption Passive heat sink that doesn’t use electricity
Good looking design for show
Physical design is aesthetically pleasing
Science and Mathematics Fourier’s Law Materials
Fourier’s Law q = k A dT / s
› q = quantity of heat (energy) (watts)› k = Thermal conductivity (W/m.K or
W/m oC, Btu/(hr oF ft))› A = Heat transfer area (m2, ft2)› dT = Difference in temperature (K or oC, oF)› s = Material thickness (m, ft)
Conductive Heat Transfer
Materials Aluminum
› 44 Btu/(hr oF ft2/ft)› Melting temperature 1220˚C
Copper-Brass› 64 Btu/(hr oF ft2/ft)› Melting temperature 1083˚C
Steel› Various grades of steel produce different
results
SummaryBackgroundInitial ResearchDecision AnalysisScience and Mathematics