Threshold Energies Corporation hosts a complimentary renewable energy seminar at the Montorio Show Home Come out and explore a "Greener Option" for your heating, hot water and air-conditioning needs. Call Lynne 780-459-9433 to register.
March 10, 2012
BELGRAVIA GREEN GRAND OPENING.
Threshold Energies Corporation will be on site for the final tour of the Effect Homes Belgravia Green Project 11536 - 74 Ave. Belgravia-Edmonton 10-4pm.
Threshold Energies Corporation has completed the contract to install one of the largest solar hot water systems in Alberta. The Edmonton International Airport expansion has a 64 solar hot water collector system that generates enough energy to provide most of the hot water for all washrooms in the new facility.
Geothermal Basics
There are two types of geothermal energy:
core geothermal, energy from the earth's core at depths beyond 5000 feet
solar geothermal, 46% of the sun's radiant energy absorbed into the upper 500 feet
Core geothermal can be implemented in 8% of the world's landmass, for example:
Banff Srings Hotel
Miette Hot Springs
Old Faithful in Yellowstone Park
the whole country of Iceland
Solar geothermal on the other hand can be implemented everywhere on the planet.
Note: in the rest of this briefing it will be assumed that the term geothermal will mean solar geothermal.
Geothermal is a proven technology with the following approximate number of installations:
population
installations
World
6.6 billion
3.5 million
USA
300 million
2 million
Sweden
6 million
200 000
Canada
32 million
60 000
Alberta
3.5 million
2000
The oldest known installation in Canada is a residence in Burlington, Ontario, installed in 1950.
A far-north site that I am aware of is installed in a federal highways maintenance shop, 300 miles north of Whitehorse.
The main components of a geothermal system installation are:
4-inch wells, drilled 200 to 300 feet deep (other designs including horizontal loops and pond loops can also be utilized).
high-density polyethylene pipe loops, inserted into the wells (down and up in the same hole).
geothermal grout, poured into the void space. The grout is formulated to conduct the heat from the ground to the pipe.
an underground manifold, with a reverse return header system results in one supply and one return pipe coming up in to the mechanical (furnace) room.
a heat pump, a device that looks like a furnace but uses the same technology as a refrigerator, comes in two basic designs (though some models can do both):
those that create hot air
those that create hot water
Hot-air ducts, similar to a natural gas system but the ductwork is 20% larger.
Hydronics piping (optional), in-floor piping that should be spaced closer together than what is usually done with a boiler.
In Alberta, geothermal systems can be installed that totally replace natural gas.
In Alberta, 74% of a residence's energy requirements (heating, cooling, and hot water) can be met through the installation of a geothermal system. Most of that yearly energy requirement is needed in the winter when sunshine is limited.
The approximate cost to install the infrastructure to create one watt of energy is as follows:
hydrogen fuel cell
$30
photovoltaic electric module (solar panel)
$10
wind turbine
$5
geothermal
$3
solar hot water
$2
Geothermal has the advantage of being available all-day and year-round. Compare to photovoltaic electric, solar hot water and wind turbines that are dependant on environment conditions.
The environmental impact of installing a geothermal system in a home is equivalent to taking two cars off the road. Green house gas reductions are significant.
The introduction of geothermal technology into the Alberta market suffers from the same fate as many other technology introductions. Our best estimates are that over 50% of all installations are being done incorrectly, even some designed by professional engineers. This happens because of:
a lack of education
arrogance by some installers, drillers, and engineers that think they know it all
a lack of building code rules and adequate inspection processes
The Alberta Geothermal Energy Association was formed in March 2007 and received its formal incorporation certificate as a non-profit association in September 2007.
Since education and the building code both come under provincial jurisdiction, our association feels that solutions to improve the industry are best met through a strong provincial association.
The feedback we have received from municipal inspectors in Alberta is that they want installations to be designed and installed by individuals who have taken their instruction from provincially certified institutions, e.g. NAIT, SAIT, U of A, U of C, U of L.
In North America, the main body of knowledge for this technology was developed by academics at Oklahoma State University. Over the last 30 years, many engineering types at OSU have done research and created textbooks for geothermal technology. Commercialiaztion of that research and development of training programs was accomplished by creating an industry association that is also headquartered at OSU. The long-winded name for this association is the International Ground Source Heat Pump Association (IGSHPA). OSU is really the Mecca for geothermal in North America.
Our association responded to the educational need by facilitating an agreement between NAIT and OSU. This agreement was signed in November 2007.
I personally took my installer training course at OSU from Dr. James Bose. That same course along with many unique Canadian enhancements is now available at NAIT as a certificate-level course (GEO101).
On the education front, much more needs to be done. In Alberta, we need:
an apprenticeship program for geothermal installers, similar to the BC program commencing in the fall of 2008
geothermal design training for mechanical engineers at our universities
education for consumers that help them in their quest to find a reputable geothermal contractor
