Tuesday, June 8, 2010

Found a good link to a recently completed net zero house in Kamloops, Bc, built and designed by students and faculty at the local School of environmental science, what blew me away was how complicated and no doubt expensive the roof was, with all those brackets for supporting the PV panels, and the openings for wiring, hot water pipes, you name it, and how many potential places for leaks does that create?
This really brings to mind my longstanding idea to do solar renos on bungelows by replacing the existing roof with a transparent polycarbonate roof, just like a sundeck or sunroom, but out of the way with better solar access.
Now inside that upper sunroom one can start seedlings, and behind the racks you can put up PV panels that double as solar thermal collectors, in fact you can start putting up simple hollow metal boxes painted black behind the seedlings, the heat  can be extracted with a car radiator and sent to a watertank below the plant bench for cold nights, and when it getss too hot inside, open up the ceiling vents, and as the heat exits by natural convection, that heat can be scavenged too by radiators in that airflow!
This vent stays open all summer to extract heat from under the roof, i am working on a cupola with built in heat scavenger, that can use your existing roof as a solar collector, and the heat gets extracted and piped to a tank in the basement upstream of the existing waterheater.


1 comment:

  1. The trailer-sized barbecue was warming as Canadian Homebuilders Association Central Interior president Darryl Caunt stepped up to the microphone.

    He called out name after name after name of the people involved in this project undertaken by the community for the community.

    Behind him stood the fruit of all this communal labour. This year’s YM/YWCA Dream Home.

    This year’s project is more than just a fundraiser for the non-profit agency. It’s a first for Kamloops, a demonstration of how a house can be built so that it produces its own electricity and heat.

    From its solar roof panels to the geothermal heat generating up from the ground, this is the Green Dream Home.

    It’s also one of the winning projects for Canada Mortgage and Housing Corp.’s national EQuilibrium sustainable demonstration houses. In the next six months, as many as 60,000 people are expected to walk through the house at 1858 Ironwood Terrace.

    “There’s been no other home like it,” said Caunt, referring not only to the house’s environmental attributes, but also the fact the community is behind its construction, including involvement of Thompson Rivers University students in the construction as part of their training.

    The Homebuilders’ association worked with TRU students for 19 years, and both have participated with creating the Y Dream Home for the last 15.

    Lindsay Langill, TRu’s dean of the school of trades and technology, said it’s amazing what students and the community can do when they pull together.

    “Certainly, we are setting new ground, setting new benchmarks,” he said.

    Tk’emlups Indian Band Coun. Evelyn Camille reminded those present of the need to care for the earth and children’s future. She also hinted she was due for some good luck in the Y Dream Home lottery.

    “Every year I buy a ticket. Maybe this year, they’ll pull mine.”

    Brian Hyashi of NexBuild Construction, who had the main building crews on the site, later showed off some of the green features of the home.

    They included automated lighting, powder-coated rebar railing rods, cork flooring, recycled glass kitchen countertops, bamboo cupboards, Energuide appliances, concrete and foam insulation exterior walls, triple-glazed balcony doors and a digital meter that shows how much solar electricity the house is creating and how much it’s using.

    More information about the house is available online at www.greendreamhome.ca.