Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Waste heat research leads the way for reduction of fossil fuels

PhD candidate Priyanka Jood is pictured with her supervisors Dr Germanas Peleckis and Professor Xiaolin Wang
close
PhD candidate Priyanka Jood is pictured with her supervisors Dr Germanas Peleckis and Professor Xiaolin Wang close

Abstract:
Thermoelectric power generation is expected to play an increasingly important role in meeting the energy challenges of the future.

And helping to meet that energy challenge is PhD student, Priyanka Jood, from the Institute for Superconducting and Electronic Materials (ISEM) whose groundbreaking research has just been published in the American Chemical Society journal, Nano Letters.

Waste heat research leads the way for reduction of fossil fuels

Wollongong, Australia | Posted on October 4th, 2011

Priyanka, the first author of the paper, supervised by Dr Germanas Peleckis and Professor Xiaolin Wang, is working on thermoelectric materials which can generate electricity directly from waste heat. Dr Peleckis, Professor Wang, and the Director of the ISEM, Professor Shi Dou, are co-authors of the Nano Letters paper.

The UOW team along with researchers from Rensselaer Polytechnic Institute (RPI) in New York have created large marble-size pellets of thermoelectric nanomaterials. Priyanka spent about a year working alongside the US team.

The RPI team are also co-authors in the paper. The team was led by Professor Ganpati Ramanath and the other team members who contributed were Rutvik J. Mehta, Yanliang Zhang, Richard W. Siegel and Theo Borca-Tasciuc.

Waste heat is sometimes referred to as secondary heat or low-grade heat which is heat produced by machines, electrical equipment and industrial processes. It is a byproduct of nearly all electrical devices and industrial processes from driving a car to flying an aircraft or operating a power plant.

Now the UOW team based at the Innovation Campus along with engineering researchers at Rensselaer Polytechnic Institute have developed new nanomaterials that could lead to techniques for better capturing and putting this waste heat to work.

The key ingredients for making marble-sized pellets of the new material are aluminium and a common everyday microwave oven.

Harvesting electricity from waste heat requires a material that is good at conducting electricity but poor at conducting heat. One of the most promising candidates for this job is zinc oxide (ZnO) -- a non-toxic, inexpensive material with a high melting point.

While nanoengineering techniques exist for boosting the electrical conductivity of zinc oxide, the material's high thermal conductivity is a roadblock to its effectiveness in collecting and converting waste heat. Because thermal and electrical conductivity are related properties, it's very difficult to decrease one without also diminishing the other.

Now the UOW and US-based teams have demonstrated a new way to decrease zinc oxide's thermal conductivity without reducing its electrical conductivity. The innovation involves adding minute amounts of aluminium to zinc oxide, and processing the materials in a microwave oven.

The research could lead to new technologies for harvesting waste heat and creating highly energy efficient cars, aircraft, power plants, and other systems.

Researchers say harvesting waste heat is a very attractive proposition, since the heat can be converted into electricity and used to power devices such as a car that is creating the heat in the first place. This would reduce the world's dependence on fossil fuels.

Priyanka said it was possible that even further power factor enhancements using nano-structured zinc oxide might be possible making this material highly valuable for thermoelectrical industrial applications.

She said that researchers at ISEM are continuing to explore new and novel methods for producing high performance thermoelectric materials as a part of their research program in energy storage and energy conversion materials.

####

For more information, please click here

Contacts:
University of Wollongong
Wollongong NSW 2522 Australia
UOW Switchboard: +61 2 4221 3555
Fax: +61 (02) 4221 3128

Copyright © University of Wollongong

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Results of the Australian Research Council funded study entitled “Al-Doped Zinc Oxide Nanocomposites with Enhanced Thermoelectric Properties,” can be seen online at Nano Letters at this site:

Related News Press

News and information

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing April 24th, 2015

Fast and accurate 3-D imaging technique to track optically trapped particles April 24th, 2015

Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications April 24th, 2015

Discoveries

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing April 24th, 2015

Fast and accurate 3-D imaging technique to track optically trapped particles April 24th, 2015

Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications April 24th, 2015

Announcements

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing April 24th, 2015

Fast and accurate 3-D imaging technique to track optically trapped particles April 24th, 2015

Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications April 24th, 2015

Energy

Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications April 24th, 2015

Scientists Use Nanoscale Building Blocks and DNA 'Glue' to Shape 3D Superlattices: New approach to designing ordered composite materials for possible energy applications April 23rd, 2015

'Holey' graphene for energy storage: Charged holes in graphene increase energy storage capacity April 22nd, 2015

Expanding the reach of metallic glass April 22nd, 2015

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Phonons, arise! Small electric voltage alters conductivity in key materials April 22nd, 2015

New class of 3D-printed aerogels improve energy storage April 22nd, 2015

'Holey' graphene for energy storage: Charged holes in graphene increase energy storage capacity April 22nd, 2015

‘Oxford Instruments Young Nanoscientist India Award 2015’ to Prof. Arindam Ghosh April 20th, 2015

Research partnerships

Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications April 24th, 2015

Electron spin brings order to high entropy alloys April 23rd, 2015

Surface matters: Huge reduction of heat conduction observed in flat silicon channels April 23rd, 2015

Drexel materials scientists putting a new spin on computing memory April 22nd, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project