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Here is a press release about the technology (long) Posted by CrNiFe [Email]  (#408)  [Profile/Gallery]
(more from CrNiFe) on Mon, 6 Feb 2006 10:43:32
In Reply to: Re: geothermal heating, your thoughts, PT, Sun, 5 Feb 2006 08:45:06 Members do not see ads below this line. - Help Keep This Site Online - Signup |
from the University of Ontario Institute of Technology's website, to give you a better idea of how it works.
What you have to spend up front in capital costs needs to balance your savings over the life of the house...
Regards,
CrNiFe
Toronto
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Canada's newest university has one of North America's largest geothermal well fields
November 7, 2003
Oshawa, ON - The drilling of a geothermal well field-one of the largest in North America-has just been completed on the campus of Canada's newest university, the University of Ontario Institute of Technology.
Three hundred and eighty-four holes, each drilled 213 metres (700 feet) into the earth will be linked to mechanical systems that will provide eight new university buildings with a highly efficient and environmentally friendly heating and cooling system.
According to Bruce Bunker, director of the university's special projects, it took three rigs each digging one hole per day to accomplish the task. "If the holes were laid end to end they would stretch the equivalent of 80 kilometers (50 miles)-that's about from here to the Toronto International Airport."
The drilling is just the first step in the development of a thermal energy storage system that uses the earth's relatively constant temperature to provide a stable, low maintenance and efficient energy source. "Think of this as the radiator if you were building a car," says Bunker. "We still need to connect the hoses to a water pump to cool the engine." He says the completed system will be ready by May 2004.
During the winter, fluid circulating through tubing extended into the wells will collect heat from the earth and carry it into the buildings. In summer, the system will reverse to pull heat from the building and place it in the ground.
The ground source thermal system is just one innovation in the development of the new university campus. A "green" roof on the first and largest academic building will also reduce heating and cooling costs and improve storm water management.
The thermal system is located beneath the campus commons which, when construction is completed in 2006, will be surrounded by academic buildings and the new campus library. This is the first phase of the 47-hectare (117-acre) campus designed by the internationally acclaimed firm of Diamond and Schmitt Architects incorporated of Toronto.
Keen Engineering Co. Ltd, an international consulting and mechanical engineering firm specializing in green building design, provided services to the campus master plan and the central plant that will be connected to the ground source thermal field. Beatty and Associates Ltd. of Calgary provided drilling operations.
BACKGROUNDER
Thermal Energy Storage System
What are thermal energy storage systems? Electrically powered systems that tap into the earth's stored energy through boreholes drilled deep into the earth.
How will the system work at the University of Ontario Institute of Technology? The system is comprised of 384 holes within which a glycol solution is circulated through a continuous loop of polyethylene tubing to a depth of 213 metres (700 feet). During the winter, fluid circulating through tubing extended into the wells collects heat from the earth and carries it into the buildings. In summer, the system will reverse to pull heat from the building and place it in the ground.
, Sun, 5 Feb 2006 21:51:17
, Sun, 5 Feb 2006 16:14:22, Mon, 6 Feb 2006 16:21:35, Mon, 6 Feb 2006 20:52:57, Mon, 6 Feb 2006 10:43:32 <-- Viewing This Message
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