By Amiel Blajchman •
October 21, 2008
Former Canadian municipal councilor and current building design consultant David Braden, has built himself a green home using current building techniques that doesn’t even require a furnace.
We’ll be able to heat our entire house with a common hairdryer, Dave boasts. No furnace even in the extreme Southern Ontario weather.
Braden is not the first to promote taking one’s home off the grid, but he is trying to do it in a way that utilizes common building techniques and architectural devices (i.e. not with flushless toilets, buried geothermal lines, and other techniques that are available, but that most observers associate with “treehuggers”). According to Braden
I don’t want to be conveyed as a hippie. I want to get the message to the mainstream. People need to know that in fact there is a great solution sitting right in front of us.
By Amiel Blajchman •
October 20, 2008
Former Canadian municipal councilor David Braden, has built himself a completely energy efficient, off the grid, and furnace-free (!) home using current building techniques.
According to Braden
I don’t want to be conveyed as a hippie. I want to get the message to the mainstream. People need to know that in fact there is a great solution sitting right in front of us.
At the heart of the house’s ability to be energy efficient and furnace free, is its design: using a combination of south-facing windows and extensive insulation, heat loss is near-negligible due to the design being almost airtight.
By Keith Rockmael •
June 27, 2008
As we walked into the mammoth PCBC (Pacific Coast Builder Conference) at the Moscone Center in San Francisco we couldn’t help but notice the hanging banners with the words - Power. Forward. Sustain. Of course we could see Power and Forward, as we wouldn’t expect Weakness and Backward but then - Sustain. That omnipresent word like Green that has seeped into the mindset of builders and developers. Or has it? Is it part of the green spin or are things starting to move forward in a powerfully sustainable direction? We decided that “both” loomed as the right answer. For this installment, we decided to cover some of the unexpected and the questionable lower profile “green” products. Sorry about the ” ” around the green but you’ll see where we go with this idea.
We totally got buzzed about something so innocuous that we almost walked passed it because it didn’t have a bunch of Green banners proclaiming its greenness. This Verve living system offers what they called a living control system which in simple terms operates like a whole house lighting system. We’ve seen these before but this one operates on battery free, self sustaining technology or what they call energy harvesting radio frequency technology. Pretty scientific for us but the little gizmo works in a panel that reduces the power so that certain switches can come on at certain levels and times. The systems extends bulb life and new homes don’t need copper wiring installed if they use this system. We even like the parent control which operates like the driver’s control when it comes to locking and unlocking car doors. We’re locked for this system.
Although they sound like they are different terms for the same thing, geothermal energy and ground source heat pumps are two different systems, with little in common other than that they are making use of what lies below the surface of the Earth. They do it in very different ways, however.
A geothermal energy system uses heat from below the surface of the earth as an energy source, much like solar panels capture sunlight and convert it into useful energy (electricity or hot water). A geoexchange system with a ground source heat pump (GSHP) is more akin to a hybrid automobile. It is not a method for generating energy, but a method for more efficiently using energy. It still takes energy input to operate a GSHP system, but a GSHP can be as much as 300% to 400% more efficient when compared to highly efficient furnaces, which are typically in the high 90s for efficiency percentage.
