by .stage3renewables.com | Apr 22, 2016
A Nordic Air to Water Heat Pump is the heart of this retrofitted heating and cooling system. Numerous improvements will cut the energy bills dramatically and provide comfortable temperatures throughout the year.
by jdunkley | Apr 21, 2016
Net Positive This system is net positive by more than 3,000 kWh/yr. This is thanks to a large ground mounted, grid tied, solar photovoltaic (PV) array coupled with and open loop geo-exchange heating and cooling system. These systems provide more than 12 Mega Watt...
by .stage3renewables.com | Dec 30, 2014
The Earth and the Sun are heating and powering this home as it approaches Net-Zero energy. Combining multiple renewable energy technologies has achieved incredible results.
by jdunkley | Jan 26, 2013
This turnkey renewable mechanical system is designed to provide domestic hot water and space heating with minimal external energy input. The vast majority of space heat and domestic hot water is provided by the geothermal heat pump and solar thermal system. This...
by jdunkley | Jun 12, 2012
This project exemplifies energy efficiency. The building envelope is ICF, attic blown cellulose, premium windows and doors allow this 2,500+ sq ft home to be comfortably heated with a 3T nominal heat pump. The system includes a year round, domestic hot water preheat...
by jdunkley | Mar 6, 2012
Even in a well established industry, this installation stands to prove there is ‘always room for improvement’. There are a few things that set this design apart from the status quo; Hybrid closed and open loop Variable loop flowrate Heat exchanger...
by jdunkley | Nov 23, 2011
With this installation, inputs such as hot and chilled buffer tank temperatures, 22 room thermostats and outside air temperature are all taken into account to control geothermal heat pumps, circulating pumps and a plethora of control valves. When the heating and...
by jdunkley | Sep 27, 2011
In British Columbia, nothing says local energy like a combined biomass gasification and solar thermal system to supply space heat and domestic hot water. During the low solar gain, high heat requirement months, the biomass system provides the vast majority of the...
by jdunkley | Sep 27, 2011
In this application, fuel oil was burned in a low efficiency boiler for space heat and, year round, for domestic hot water. Thermal efficiencies on aging boilers of this type can be as little as 50-60% meaning half the internal energy in the fuel oil is not...
by jdunkley | Sep 6, 2011
Clean & Green Something I hear from time to time is that solar is “ugly”. It doesn’t have to be. By paying attention to detail and planning the installation to be as unobtrusive as possible, it can not only work well for decades and displace...