by jdunkley | Nov 19, 2013
The idea of heating a space with the sun is very attractive and elegant, though not trivial to implement cost effectively in Northern coastal climates. The challenge is that both daily and seasonally, the load and source don’t coincide. When we need space heat,...
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 extended care hospital facility uses a significant amount of hot water and was due for a new hot water system to replace the failing one. The solar hot water preheat system will provide nearly 50% of the load annually to the building. A drainback, 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...
