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Published: 21 November 2011

New aircon test facility to judge star performance


How can you know if your air conditioner delivers the energy-savings promised by its star-rating on the label?

The state-of-the-art National HVAC Performance Test Facility broadens CSIRO's solar cooling research capability and provides the Australian HVAC industry with an important resource for quality performance and ratings testing.
Credit: CSIRO

CSIRO engineers have designed and commissioned a state-of-the-art air conditioner test facility to evaluate the electrical, cooling and heating performance of conventional and solar-powered systems.

The National Heating Ventilation & Air Conditioning (HVAC) Performance Test Facility, located at Newcastle NSW, can simulate climate conditions from Hobart winters to tropical summers in Darwin.

Solar cooling research leader, Dr Stephen White, says the facility will greatly enhance Australia’s capability to perform ratings and Minimum Energy Performance (MEPS) testing of new and existing products on the Australian market.

‘For the large number of HVAC systems available in the Australian market, only a few test facilities exist to validate manufacturer’s claims regarding the thermal and electrical performance of their product,’ he said.

The facility expands Australia’s capacity to undertake spot-checks on existing products as well as validate new products, giving accurate information that can eventually be used for product labelling.

‘It offers industry new resources to develop innovative products, test new product assembly combinations or undertake specific tests on novel and conventional air conditioning systems,’ added Dr White.

‘Consumers are also winners because they will be able to have accurate information they can rely on to assist in making better purchase choices.’

Nearly three-quarters of Australian households have air conditioners, while heating, cooling and ventilation accounts for up to 40 per cent of business energy bills.

Air conditioning contributes significantly to peak-load pressure on the electricity network and is driving the demand for infrastructure upgrades.

As part of its integrated approach to helping Australia transition to a low-emission, prosperous energy future, CSIRO is developing innovative and cost-effective solar cooling technologies using this facility, to cut emissions and reduce seasonal peak loads.

Source: CSIRO







Published: 2010

Salinity changes show wetter wet regions, drier arid ones


Evidence that the world’s water cycle is changing, making arid regions drier and high rainfall regions wetter as atmospheric temperature increases, is contained in new research published online in the Journal of Climate.1

Ocean salinity changes indicate that arid regions are becoming drier.
Ocean salinity changes indicate that arid regions are becoming drier.
Credit: ScienceImage/Greg Heath

The study, co-authored by Hobart-based CSIRO scientists Paul Durack and Dr Susan Wijffels, shows the surface ocean beneath rainfall-dominated regions has freshened, whereas ocean regions dominated by evaporation are saltier.

The paper also confirms that surface warming of the world’s oceans over the past 50 years has penetrated into the oceans’ interior, changing deep-ocean salinity patterns.

The research was based on historical records and data provided by the Argo Program’s worldwide network of ocean profilers – robotic submersible buoys that record and report ocean salinity levels and temperatures to depths of two kilometres.


1 Journal of Climate, http://tiny.cc/mb35z




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