Navigation Links
Nanowick at heart of new system to cool 'power electronics'
Date:7/22/2010

The water then turns back to a liquid in another part of the heat pipe called the condenser.

The wick eliminates the need for a pump because it draws away fluid from the condenser side and transports it to the evaporator side of the flat device, Garimella said.

Allowing a liquid to boil dramatically increases how much heat can be removed compared to simply heating a liquid to temperatures below its boiling point. Understanding precisely how fluid boils in tiny pores and channels is helping the engineers improve such cooling systems.

The wicking part of the heat pipe is created by sintering, or fusing together tiny copper spheres with heat. Liquid is drawn sponge-like through spaces, or pores, between the copper particles by a phenomenon called capillary wicking. The smaller the pores, the greater the drawing power of the material, Garimella said.

Such sintered materials are used in commercial heat pipes, but the researchers are improving them by creating smaller pores and also by adding the carbon nanotubes.

"For high drawing power, you need small pores," Garimella said. "The problem is that if you make the pores very fine and densely spaced, the liquid faces a lot of frictional resistance and doesn't want to flow. So the permeability of the wick is also important."

The researchers are creating smaller pores by "nanostructuring" the material with carbon nanotubes, which have a diameter of about 50 nanometers, or billionths of a meter. However, carbon nanotubes are naturally hydrophobic, hindering their wicking ability, so they were coated with copper using a device called an electron beam evaporator.

"We have made great progress in understanding and designing the wick structures for this application and measuring their performance," said Garimella. He said that once ongoing efforts at packaging the new wicks into heat pipe systems that serve as the thermal ground plane are complete, devices based on the
'/>"/>

Contact: Emil Venere
venere@purdue.edu
765-494-4709
Purdue University
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Cardio3 BioSciences Reports Positive Three-Month Data From its Clinical Trial of C-Cure(R) in Heart Failure
2. FAIR-HF Subanalysis Shows That Ferinject(R) Improves Kidney Function in Iron-Deficient Patients With Chronic Heart Failure
3. Biosense Webster Reinforces its Leadership Position in the Electrophysiology Market at Heart Rhythm 2010
4. World first remote heart operation to be carried out in Leicester using robotic arm
5. Researchers gain detailed insight into failing heart cells using new nano technique
6. VAP with a Pap Campaign Targets Women and Heart Disease
7. Just in Time for Heart Health Month... TRIPLE Cardiovascular Health Support From EcoNugenics
8. New Study: Lp(a) Joins LDL as Heart Disease Risk Factor
9. 2-Year-old Baby With Complex Heart Deformity Undergoes Major Open Heart Surgery at Wockhardt Hospitals, Bangalore - (now a Network Hospital of Fortis) Without any Blood Transfusion
10. Cancer, Heart Disease, Stroke, Diabetes, Chronic Pain and Depression Share a Major Pathology Factor
11. deCODE Finds Genetic Factors Impacting Key Clinical Measurements of Heart Activity and Disease Risk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nanowick at heart of new system to cool 'power electronics'
(Date:8/29/2014)... York (PRWEB) August 29, 2014 ... at $5.6 billion in 2019. It is expected ... 2013 to 2019, and was valued at $1.8 ... published by Transparency Market Research. , For more ... http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research report, titled ...
(Date:8/29/2014)... 29, 2014 Local veterinarian, Dr. Keith ... are seeking candidates to participate in an investigational study ... The ultimate goal of this study is to determine ... one or two arthritically affected joints can help reduce ... Candidates for the current investigational study must be older ...
(Date:8/29/2014)... (PRWEB) August 29, 2014 Intrinsic ... 13485:2003 certified, GAMP® 5 compliant imaging core lab, ... international Phase II clinical trial to assess a ... Throughout this trial, Intrinsic Imaging will provide comprehensive ... to, protocol and charter development, site qualification, site ...
(Date:8/28/2014)... “This kit has an improved extraction efficiency and ... 150 ppb,” said Mark Tess, PhD, Mycotoxin Product Manager for ... owners and USDA-GIPSA inspection agencies that have a need to ... place in a matter of minutes with nothing but our ... feed and grain before accepting it, but they no longer ...
Breaking Biology Technology:Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2Intrinsic Imaging Awarded Phase II Clinical Trial to Assess New Treatment for Non-Hodgkin’s Lymphoma 2
... Sept. 21 Mr. Paw Yew Hock, the newly appointed Interim ... Ltd.)("China Agro") announced today the reorganization of the Company in order ... biotech marketplaces. , , Mr. Paw noted that ... Company has put in place a seasoned board and management team, ...
... , WORCESTER, Mass., Sept. 21 ... Dr. Robert Lanza, its Chief Scientific Officer, will be featured ... an hour long radio program on science, technology, politics, and ... in New York City (WBAI 99.5 FM), and re-aired in ...
... , WEST CONSHOHOCKEN, Pa., Sept. 21 Cadient ... industry, today announced that two web sites it developed and designed have ... magazine,s MM&M Awards for the Best Web Site category. ... web site developed by Cadient Group for AstraZeneca and the ...
Cached Biology Technology:China Agro-Technology Holdings Reorganized 2Dr. Robert Lanza Featured on Michio Kaku's 'Explorations in Science' 2Dr. Robert Lanza Featured on Michio Kaku's 'Explorations in Science' 3Cadient Group Selected as Finalist in Medical Marketing & Media Awards 2
(Date:8/28/2014)... have identified a handful of bacterial culprits that may ... and ulcerative colitis, using patients, own intestinal immune responses ... 28 in the journal Cell . , Trillions ... plays a critical role in the development and progression ... number of bacterial species affect a person,s susceptibility to ...
(Date:8/28/2014)... MD FASEB MARC (Maximizing Access to Research Careers) ... American Society of Human Genetics from October 18 ... are meant to promote the entry of students, post ... of the basic science community and to encourage the ... Human Genetics. This year MARC conferred 16 awards ...
(Date:8/28/2014)... support of peer groups and clinicians is critical ... to recent University of Georgia research. , A ... County area determined that role models for successful ... of infants. , "Mothers who received that support ... said study co-author Alex Anderson, an associate professor ...
Breaking Biology News(10 mins):Yale study identifies possible bacterial drivers of IBD 2Breastfeeding study shows need for effective peer counseling programs 2
... (June 23, 2009) University of Minnesota Medical School researchers have ... may work to treat those infected by a parasitic flatworm. ... The Schistosomasis parasite infects about 200 million ... 70 countries, where people become infected simply by bathing, drinking, or ...
... indicates the way our brain handles how we move ... someone else,s shoesmay be related to how and why ... recently published in the online scientific journal PLoS ... http://tinyurl.com/lw6qmv . Empathy involves, in part, the ability ...
... Microbiome Project has awarded more than $42 million to expand its ... or on our bodies affect our health, the National Institutes of ... all the microorganisms that reside in or on the human body, ... as part of the NIH Common Fund,s Roadmap for Medical Research, ...
Cached Biology News:U of M study finds new insight on therapy for a devastating parasitic disease 2Ability to literally imagine oneself in another's shoes may be tied to empathy 2Ability to literally imagine oneself in another's shoes may be tied to empathy 3NIH expands Human Microbiome Project; funds sequencing centers and disease projects 2NIH expands Human Microbiome Project; funds sequencing centers and disease projects 3NIH expands Human Microbiome Project; funds sequencing centers and disease projects 4NIH expands Human Microbiome Project; funds sequencing centers and disease projects 5
...
... to MSY2/YBOX2 ( Abpromise for ... Antigen: Synthetic peptide derived from ... of human YBX2. (Note: the ... Entrez ...
... Freedom EVO384R are fast multi-channel pipetting platforms ... different sizes, with a multi-channel head and ... time saving, with true parallel processing of ... your assays with the Freedom EVOware program. ...
... Aminopropylsilane is perhaps the ... chemistry for microarray experiments. ... for Microarrays provide a ... for printing PCR products ...
Biology Products: