Featured Research

from universities, journals, and other organizations

Cheap Energy -- A Revolutionary New Way

Date:
November 12, 1999
Source:
CSIRO Australia
Summary:
Australian scientists have perfected a new combustion technology, which is poised to clean up greenhouse gas emissions, slash energy costs and significantly boost productivity.

Australian scientists have perfected a new-age combustion technology, which is poised to clean up greenhouse gas emissions, slash energy costs and significantly boost productivity.

“We have produced a new generation pulse combustion technology which until now has defied the best efforts in the world to turn it into a practical option for everyday use,” says CSIRO Building Construction & Engineering Chief, Mr Larry Little.

“CSIRO’s new generation combustion technology with its high temperatures and low fuel consumption is so efficient it can halve energy consumption, offering the potential to revolutionise manufacturing and energy use throughout Australia and the world,” he says.

On the home-front, pulse combustion promises cheaper water heating, air-conditioning and refrigeration.

There is also major and immediate potential in the following areas:- in the steel and smelting industry to drive foundries;- in domestic and commercial refrigerators for cooling;- for downstream ore processing in the mining industry;- in the food industry where spray drying is used for making skim milk products; - and for boilers in hospitals and other buildings.

Dr David Proctor of CSIRO Thermal & Fluids Engineering is the scientist behind CSIRO’s New Generation Pulse Combustion (NGPC).

“Pulse combustion produces much hotter and cleaner flames by a ‘natural’ recirculation of unburnt exhaust gases created by its pulsing effect. Produced by sound waves, the pulsing effect also reduces noxious emissions to levels far below the strictest environmental standards,” he says.

“Pulse combustion is the consequence of a combustion instability that is driven into resonance by the geometry of the burner”.

“This resonant driving locks the combustion instability into a very stable repetitive pattern where the burner becomes self-aspirating and there is no need for a fan to continuously supply the combustion air.

“The flame is not continuous but is a series of discrete flamelets, that are ignited on the hot remnant gases of prior flamelets, like passing on the baton in a relay race.

“The result is significantly greater heat production than in conventional systems and exhaust gas emissions become amongst the cleanest in the world. Zero levels of total hydrocarbon (THC) and carbon monoxide (CO) are attainable.

“In the best of conventional combustion systems there are usually small quantities of unburnt hydrocarbons and CO present in the exhaust gases.”

Dr Proctor says that equipment also tends to be self-cleaning throughout the life of the plant as a result of the micro-vibrations that are generated, and by operating each pulse combustor out of phase with its partner, sound levels are much lower than for many industrial burners currently in use.

The obstacle to commercially viable pulse combustion worldwide has been that, until now, no-one could find a way to keep a pulsing flame burning at low levels where pulse combustion offers both great heat output and reduced energy consumption.

“CSIRO’s NGPC overcomes the major problem of turning down the burning rate without shutting down the flame - a difficulty known as ‘turning down’,” says Dr Proctor

Past attempts have only managed to turn the burning rate down 10%. CSIRO’s NGPC achieved rates of 60% - an amount that makes pulse combustion become an extremely attractive proposition for industry.

One secret behind a practical pulse combustor is its specially designed heating chamber, but this still comes up short without another major technological breakthrough.

CSIRO is the first to have found a way to scale up the laboratory pulse combustor into commercial sized processing facilities. Two prototypes have been built and are undergoing testing.

These are subject to confidentiality agreements with the two companies involved.

More information from Ken.Anderson@dbce.csiro.au


Story Source:

The above story is based on materials provided by CSIRO Australia. Note: Materials may be edited for content and length.


Cite This Page:

CSIRO Australia. "Cheap Energy -- A Revolutionary New Way." ScienceDaily. ScienceDaily, 12 November 1999. <www.sciencedaily.com/releases/1999/11/991111164503.htm>.
CSIRO Australia. (1999, November 12). Cheap Energy -- A Revolutionary New Way. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/1999/11/991111164503.htm
CSIRO Australia. "Cheap Energy -- A Revolutionary New Way." ScienceDaily. www.sciencedaily.com/releases/1999/11/991111164503.htm (accessed July 30, 2014).

Share This




More Earth & Climate News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com
Climate Change Could Cost Billions, According To White House

Climate Change Could Cost Billions, According To White House

Newsy (July 29, 2014) A report from the White House warns not curbing greenhouse gas emissions could cost the U.S. billions. Video provided by Newsy
Powered by NewsLook.com
Climate Change Could Cost Billions According To White House

Climate Change Could Cost Billions According To White House

Newsy (July 29, 2014) A report from the White House warns not curbing greenhouse gas emissions could cost the U.S. billions. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins