Clean energy project chooses Australian manufacturer for assemblies

Green energy company Granite Power has said that it was cheaper to commission Archer Enterprises, a maker of components and assemblies, than to source parts from overseas.

Archer, based on NSW’s central coast, were required to make precision stainless steel and titanium components with very fine tolerances for a clean energy project.

The assembly was unveiled at Archer’s facility recently.

Sean McCracken, Granite’s research project manager, said, “Archer helped us with the design phase and was then responsible for making the front end assembly for the impulse turbine for our Granex Waste Heat Recovery demonstration model.

“The Granex technology captures waste heat from a power generator and re-uses it through our Granex Heat Conversion System. We're talking about 60 bar in this system.

“The waste heat is moving at more than Mach 1.7 through the front nozzle, it hits the turbine blades and drives them at 70,000RPM. Internal temperatures vary between 200 and 260 degrees Celsius."

Granite’s project, using technology developed in cooperation with University of Newcastle, was assisted by an Australian Renewable Energy Agency grant.

McCracken said that Australia was not known for its turbine development, and the project was something of a first.

Importantly, costs were kept down by using the local supplier. 

“Overseas technology that we wanted was so expensive and for us to make it a commercial application we needed to find a way of reducing the cost. Having Archer make the assembly has been the most economical way for us to do it. We found that there were far greater cost efficiencies to develop it here.


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