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(1 - 3 of 3)
- Title
- MICRO-SCALE EHD CONDUCTION-DRIVEN PUMPING AND HEAT TRANSFER ENHANCEMENT IN SINGLE- AND TWO-PHASE SYSTEMS
- Creator
- Pearson, Matthew
- Date
- 2011-04-19, 2011-05
- Description
-
Electrohydrodynamic (EHD) pumping methods rely on the interaction between electric fields and the flow fields of a dielectric fluid....
Show moreElectrohydrodynamic (EHD) pumping methods rely on the interaction between electric fields and the flow fields of a dielectric fluid. Conduction pumping is one EHD pumping mechanism, which offers many advantages over other EHD pumping methods (for example, a simple design, no degradation of the working fluid, and no need for a temperature gradient). Conduction pumping can be used in an adiabatic context to pump a working fluid or it can be applied to deliver substantial enhancement to single- and two-phase heat transfer processes. Experimental studies of conduction pumping to date have focused on macro-scale devices with applied voltages on the order of 10 kV. However, like many other EHD concepts, conduction pumping depends primarily on the intensity of the imposed electric field. Therefore, at the micro-scale, the reduced physical size can be accompanied by a reduction in the magnitude of the applied voltage to levels that are significantly more manageable. Furthermore, the simplicity of EHD conduction pumps, such as the lack of moving parts, high reliability, and physical compactness, make them an attractive method for pressure generation in micro-scale fluid and heat transfer devices. This experimental study examines the fundamental behavior and performance of EHD conduction pumping at the micro-scale. The pump is embedded in a rectangular, adiabatic micro-channel, and the single-phase flow and pressure generation of the pump are characterized. The EHD pumping of single- and two-phase flows in micro-channels in the presence of heat transfer is also studied and the corresponding enhancement to single- and two-phase heat transfer is quantified. In an additional study, micro-scale electrodes are embedded within a flat, heated surface to examine the ability of the conduction pump to provide electrically-enhanced wetting of the heated surface during pool boiling. A model based on hydrodynamic instability theory is generated to quantify the influence of the EHD conduction pumping on the pool boiling critical heat flux. Finally, this technology is incorporated into two unique, novel, heat transport devices akin to a heat pipe but in which the primary driving force for the liquid is conduction pumping, not capillarity.
Ph.D. in Mechanical and Aerospace Engineering, May 2011
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- Title
- Two-phase Heat Transport Device using Electrohydrodynamic Conduction Pumping
- Creator
- Yagoobi, Jamal Seyed, Pearson, Matthew R.
- Date
- 2013-10-30, 2013-10-29
- Description
-
An electrohydrodynamic conduction liquid pumping system having a vessel configured to contain a liquid therein, a single pair or multi-pairs...
Show moreAn electrohydrodynamic conduction liquid pumping system having a vessel configured to contain a liquid therein, a single pair or multi-pairs of electrodes disposed in a circularly spaced apart relationship to each other inside the vessel and configured to be oriented in the liquid. A power supply is coupled to the electrodes and configured to generate electric fields in-between each electrode pair to induce a net radial pumping of the liquid. A heat source is provided to produce heat sufficient to boil and vaporize the liquid while non-vaporized liquid moving toward the heat source prevents over-heating of the heat source. A heat sink is configured to have a operating temperature below the vaporization temperature of the liquid so that contact of the vapor with the heat sink will condense the vapor into a liquid to replenish the liquid supply moving toward the heat source.
Sponsorship: Illinois Institute of Technology
United States Patent
Primary US Patent Classification 417/48
US Patent Classification 361/700
US Patent Classification 361/702
International Patent Classification F04B 37/00
International Patent Classification H05K 7/20
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- Title
- Sports Technology for the Fans (Fall 2003) IPRO 355: Sports Technology for the Fans IPRO355 Fall2003 Final Presentation
- Creator
- Pearson, Matthew, Prost, William, Rasquinha, Kalvyn, Nadig, Graham, Waicekauskas, Scott, D'silva, Thomas, Shah, Kunal, Sivalognathan, Jathurshun, Hu, Jackie
- Date
- 2003, 2003-12
- Description
-
Develop an interactive, handheld wireless device that allows a spectator to view various camera angles and replays of players and areas on a...
Show moreDevelop an interactive, handheld wireless device that allows a spectator to view various camera angles and replays of players and areas on a field. Enhances a sports fan’s experience by making it more interactive and personalized, brings more people to the stadium thus increasing ticket sales and revenue for stadium owner.
Sponsorship: NA
Project Plan for IPRO 355: Sports Technology for the Fans for Fall 2003 semester
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