The new system, designed by Simon Shun, working under the supervision of Associate Professor N.A. Ahmed at the University of New South Wales, relies on solar and wind power when it can. When the wind drops or there is not enough sun, the ventilation system automatically switches to mains electricity. This ensures that the building gets adequate ventilation, and meets the ventilation standards legally required for health, safety and comfort.
Commercial ventilation systems use significant amounts of electrical power, enough to cause blackouts in some states during the hottest summer days. This new system has the potential to assist the wider community by reducing peak energy demands and greenhouse gas emissions.
“At present, devices based on renewable energy cannot be used for constant flow ventilation because of the unpredictable nature of the wind and sun,” Shun says. “The challenge, therefore, was to design a system that uses clean energy to the maximum possible effect. Our device has a smart switching module that selects mains electricity as a back-up power source.”
The new ventilation system was designed from the outset to use both wind and solar energy. A horizontal spin-axis design was developed to increase the effectiveness at which energy was extracted from low-speed wind. This configuration more than doubled the ventilation output at wind speeds between 0 and 10 metres a second. The horizontal axis design gave the team the freedom to introduce advantageous design features that were more difficult to incorporate with conventional configurations. Under zero wind speed conditions, an electric motor powered by a stand alone solar panel powers the system. If wind and sun conditions are both less than ideal, mains electricity is often the only solution to maintain a constant ventilation flow rate.
An electronic control module was designed as a smart solution to switch between the energy sources of wind, sun and mains electricity. The module has adjustable inputs for wind speed and solar intensity. This allows a user to adjust the point at which the system switches over to mains electricity. Shun plans to turn his prototype into a working trial system and install it on a purpose- built test building within the next six months. The industrial partner, Edmonds, a business unit of CSR Limited, which has supported the development of the concept, stands ready to assess the advantages of the system with the view of possibly taking the concept to market.
Simon Shun is one of 16 young scientists presenting their research to the public for the first time thanks to Fresh Science, a national program sponsored by the Federal and Victorian Governments. One of the Fresh Scientists will win a trip to the UK courtesy of British Council Australia to present his or her work to the Royal Institution.
Niall Byrne | alfa
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
19.10.2017 | Materials Sciences
19.10.2017 | Materials Sciences
19.10.2017 | Physics and Astronomy