cooling – TechConnect Briefs

3D printed energy efficient magnetocaloric cooling devices with controlled microchannels, functional grading and magnetic anisotropy

Sharma V., Balderson L., Barua R., Zhao H., Hadimani R.L., Virginia Commonwealth University, US

Air conditioning and refrigeration are regarded as one of the most energy-intensive technologies in demand today. Currently, 15% of the world's electric power is devoted to cooling, with that value increasing to 20% in the [...]

River, Lake and Ocean Water Cooling

Peterson J., HP, US

Using water directly from rivers, lakes, and oceans is becoming an option for end users to save energy, avoid ozone depleting refrigerants, and save space. The first system in the U.S. at Ithica, NY, which [...]

Technologies for Deep Reductions in Military Operational Energy Use

Brown R., Sharp T., Lindsey M., Kiser S., Andrews K., Lawrence Berkeley National Laboratory, US

The U.S. Pacific Command (PACOM) has begun a research program for Transformative Reductions in Operational Energy Consumption (TROPEC), which will identify, refine and validate technologies for reducing energy use in expeditionary military outposts. The primary [...]

Acoustic Power Recovery System for Thermoacoustic Cooling

Schwartz D.E., Garner S.R., Johnson J.R., Tuganov A.V., Palo Alto Research Center, US

In this work, we present a novel zero global-warming-potential, high efficiency thermoacoustic heat pump that can replace vapor compression systems for conventional air conditioning and refrigeration.

Technologies for Deep Reductions in Military Operational Energy Use

Brown R., Sharp T., Lindsey M., Kiser S., Andrews K., Lawrence Berkeley National Laboratory, US

The U.S. Pacific Command (PACOM) has begun a research program for Transformative Reductions in Operational Energy Consumption (TROPEC), which will identify, refine and validate technologies for reducing energy use in expeditionary military outposts. The primary [...]

Acoustic Power Recovery System for Thermoacoustic Cooling

Schwartz D.E., Garner S.R., Johnson J.R., Tuganov A.V., Palo Alto Research Center, US

In this work, we present a novel zero global-warming-potential, high efficiency thermoacoustic heat pump that can replace vapor compression systems for conventional air conditioning and refrigeration.

Application of Micro-channel Cooling to the Local Thermal Management of Detectors Electronics for Particle Physics

Mapelli A., Petagna P., Pezous A., Renaud P., CERN, CH

Local thermal management through silicon microfluidic devices, already under study for possible application in future 3D architectures for high power computing [1,2], is also a good candidate for solving High Energy Physics related issues. It [...]

Tunable Wetting of Titanium and Gold Based Wicking Materials

Ding C., university of california, santa barbara, US

We quantitatively report the experimental super-wetting results of wicking materials fabricated with bulk titanium micromachining, nano-scale surface modification and gold plating techniques. The results show all the four samples are completely wettable with water but [...]

Fixed-Valve Micropump Simulation and Optimization

Forster F.K., Walter T., University of Washington, US

Membrane pumps with fixed-geometry valves are ex- tremely simple to fabricate and have the potential to be highly reliable and cheap due to their simplicity. We have recently implemented a means of optimizing design parameters [...]

Applications of Topology Optimization in the Design of Micro- and Nanofluidic Systems

Okkels F., Olesen L.H., Bruus H., Technical University of Denmark, DK

The material distribution method in topology optimization was developed in the late 1980ies for stiffness design of mechanical structures, and only recently the first steps have been taken towards implementing the method in fluidics. Topology [...]