There are other high temperature District Heating examples in the United States that heat water to 180°F or higher (i.e. steam at 212°F or higher), but they all burn fossil fuels to create that heat which creates Green House Gasses and other carbon emissions. Juneau District Heating is the first and only District Heating that generates no pollution, no carbon emissions and no Green House Gasses because it burns no fossil fuels…period.
The Emerson patented system of compressors and high temperature heat pumps provide a cost effective and sustainable means to provide heat without requiring costly building retrofits or burning of fossil fuels. Furthermore, the refrigerant used does not affect the ozone in any way and has a zero global warming potential. The seawater heat pump converts the existing Btu’s in “cold” seawater into usable energy at high water temperatures. The system has a Coefficient of Performance (COP) above 300% meaning that for every 1 Btu (converted from kWh) of electricity put into the system to run the system and move the water, it delivers 3 Btu’s of useful heat to the freshwater distribution system.
The Juneau District Heating System is 100% renewable. The heat energy source for the entire District Heating is harvested from the Gastineau Channel where it was originally heated by the sun. In essence, the Pacific Ocean water is a giant solar collector collecting useful heat with a zero carbon load. As long as there is sunshine and seawater, Juneau District Heating can sustainably produce the heat to warm the businesses and homes in Juneau.
Learn more about Juneau District Heating System