Commercial Cold Water
Geothermal Renewable Energy Commercial Water Cooling reduces the cost of cooling large quantities of water by up to 75%. With a certified efficiency from between 3.5 to over 5.0, it is the only system verified by U.S. EPA to achieve 400% electrical efficiency and it does so every hour of the year by delivering renewable energy. CSIRO have also verified these efficiencies for water chilling.
Cost Benefits of Renewable Energy Water Cooling
Direct Energy delivers up to 400% electrical efficiency. For every Watt of electricity consumed by our compressor, the system delivers three to four times that amount of cool energy to the water tank because it is primarily transporting renewable energy. Even though the installed cost of the heat pump system is greater than traditional water coolers, the monthly energy savings in commercial applications are so large that the system quickly pays for itself. A commercial user with a Direct Energy water cooling system installed at a cost of $15,000, using 8,000 litres of hot water per day, an electric rate of $0.1/kWh, a temperature to 45oC and the electric resistance element raises it to 52oC, in comparison with an electric water heater saves $6,681 annually. The cost recovery period in that case is 2.2 years, for a Return On Investment of 45.4%. Even if the installation cost was $20,000, payback would be within 3 years and Return On Investment would be 33.9%.
Environmental Benefits
Burning fuels to create cold air/water wastes diminishing natural resources and can never achieve 100% efficiency. The process pollutes the environment with carbon dioxide and nitrogen oxides that are greenhouse gases. The U.S. EPA and DOE have determined that, in most applications, geothermal pumps
are the most energy efficient and environmentally friendly heating and cooling systems available.
Constantly Available Renewable Energy Source
The constant renewable energy from the earth is always available and is not dependent upon sunlight hours or temperate climate. This creates the ability to use Direct Energy pumps to deliver cooling solutions in hot climates, shift demand off-peak and thereby use lower electric rates for water cooling.
Eg. Desert cooling applications have been tested by The U.S Department of Defence and CSIRO,
Mojave desert case study
How the Renewable Energy System Works
Direct Energy’s system transfers heat by circulating ozone friendly refrigerant in copper earth loops that are trenched or bored into the earth. The liquid refrigerant transfers heat from the constant temperature of the ground, through a patented flow control device to the compressor. The compressor raises the refrigerant pressure and temperature, and routes the hot vapor to the heat exchanger. The refrigerant vapor, passing through sealed channels, transfers heat to circulating water. The water is heated and delivered to the hot water storage tank.
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