Architect: NSW Department of Primary Industries
Builder: PJ Truman Constructions Pty Ltd
Location: Glen Innes, New South Wales
System: Geothermal Exchange System with Horizontal Ground Heat Exchanger
Project Brief/Scope:
CWL Group provided an energy-conscious alternative to conventional heating and cooling for a state government client, targeting their key hub that provides research, education, farming, and community services, in the New England region of New South Wales.
The water-to-water ground source heat pump that CWL Group installed at the glasshouse utilises a horizontal-ground heat exchanger to tap into the stable heat source/sink that is the earth surrounding the site. Though ambient temperatures in the Northern Tablelands can range from -12ºC to 37ºC, the temperature beneath the earth where the horizontal ground heat exchanger lies remains relatively steady throughout the year. This provides the geothermal exchange system with a source of heat in the winter, and a dense and cool place to reject heat to (a “heat-sink”) in the summer, resulting in increased system efficiency and reduced electrical consumption year-round.
As explained by Northern Tablelands MP Adam Marshall, the new geothermal exchange conditioned glasshouse is, “vitally important for our farmers and graziers to keep ahead of the global agricultural industry and our northern research must play a big part in that overall R&D push,
“The current glasshouses date back to the 1960s and while they can grow plants for basic experiments, there are no climatic control functions – so this will provide for a giant step in their research capability, and bolster research that takes account of changing climatic conditions.
“They will be able to do temperature experiments into tropical pastures and the different environmental effects of those.”