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Province urged to get serious about geothermal energy (CBC via Yahoo! Canada News) PDF Print E-mail
Wednesday, 31 May 2006
Former governor general Ed Schreyer says it's time take a major step toward using the earth's natural energy to heat and cool more buildings in Manitoba.
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Alternative energy: Westonites find relief from rising heating oil costs (Weston Forum) PDF Print E-mail
Wednesday, 31 May 2006
Fourth of July may not be here for another month, but there are some Westonites who are already getting ready to celebrate their independence ? independence from fossil fuel that is.
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Earth-friendly construction on the rise PDF Print E-mail
Written by Administrator   
Thursday, 27 April 2006
Green symbolizes many things -- stacks of crisp Benjamins in a bank vault, a seasick sailor clinging desperately to the memory of land, the cutting gaze of a jaded rival's jealous eyes, or even a business's approach to energy efficiency and environmental awareness.




Locally, Aztech Technologies, Inc. of Ballston Spa has taken this last green theme to the extreme with a new, 24,000-square foot facility. The environmental engineering and geoscience firm moved into its new digs on McCrea Hill Road on Jan. 3, after moving out of its former home at the intersection of routes 50 and 9 in Saratoga Springs.

"It's got about every energy management feature you could imagine," said Fil Fina, a part-time independent engineering consultant who works with Aztech.

From the roof to the floor, the building sports features that reduce energy consumption and energy needs.

The roof and windows, for instance, are both "low emissivity amenities." In the case of the windows, that means "radiant heat doesn't go through the glass," Fina explained. "Heat is reflected during the summertime and kept in during the wintertime."

The roof, made of four inches of polyfoam with a white PVC membrane, operates on the same seasonal principal of retaining heat during the colder months and reflecting it during warmer months.

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Last Updated ( Thursday, 27 April 2006 )
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Geothermal pump gives free heat PDF Print E-mail
Written by Administrator   
Sunday, 05 March 2006
Free heat from a geothermal heat pump warms my kitchen as I write this commentary. For every dollar of electrical energy that goes into the heat pump, I get 3.6 dollars of electrical heat. That's 2.6 dollars of free heat. And by purchasing clean green power from hydroelectric dams and wind power, it's possible to heat one's home without burning oil and without generating global warming gases.

The idea of installing a geothermal heat pump began in 2004 when I read about how the polar ice caps are melting at a record pace and how atmospheric carbon dioxide was at record levels and increasing dramatically. The possibility of peak oil production occurring in this decade accompanied by increasing demand for oil in China has made oil prices skyrocket.

I watched as President Bush set up a string of permanent military bases in the oil producing regions of Iraq. I watched as our own Maine National Reserve troops were sent to oil-rich Iraq with the false goals of fighting terrorism and weapons of mass destruction. I watched as oil companies made obscene profits while people suffered. Something had to be done. The freedom we should be fighting for today is freedom from Middle East oil.

So, how does one economically heat one's home without oil and without pollution? Natural gas is a clean-burning fuel but it still increases carbon dioxide in the atmosphere and contributes to global warming. Solar is good, but there just isn't much sunlight available in January in Maine when we need the most heat. Geothermal heating coupled with green power produced from hydroelectric, wind and solar power met the requirements.

Green power does cost a little more than the standard offer. But even though electricity is expensive in the Bangor area, my heating costs will be less than heating from oil. Some drawbacks are the high installation cost and that geothermal heating is not well-established in Maine. To extract heat from the ground, one must bury a large amount of pipe in the ground. Still geothermal heating is a well-established technology. Ninety-five percent of new homes in Sweden have installed geothermal heating. Five hundred thousand units have been installed in Canada and the United States.

To minimize the installation cost, I decided on a smaller hybrid system that I installed myself for about $3,000. I estimated that this system could produce about 75 percent of my yearly heating needs since maximum heat loads are only required on the coldest days. My current oil furnace would provide the extra heat needed to warm the house on those days. As an added benefit the system would provide low-cost air conditioning in the summer while providing domestic hot water and heat for my swimming pool.

So, eight weekends later, twice as long as planned and with a series of intense learning situations otherwise known as correcting my own mistakes, I had a working geothermal heat pump. On Jan. 1, warm air came from the register.

Of course I am still on a learning curve but the success I've had with this system so far makes me wonder why most new houses aren't built with a geothermal heat pump for heating and cooling.

David LaBrecque is a research associate in the Chemistry Department at the University of Maine.

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Last Updated ( Sunday, 05 March 2006 )
 
Energy alternatives gaining popularity PDF Print E-mail
Written by Administrator   
Sunday, 05 March 2006
Falling temperatures and rising energy prices may be on a collision course, creating a winter of discontent.

That's why increasing numbers of Canadians are looking for alternatives to fossil fuel systems for heating and cooling their homes. More and more are turning to geothermal heating, also known as geoexchange or earth energy, as a cost-efficient and environmentally friendly option.

The Canadian Geoexchange Coalition, or CGC, which represents the geoexchange industry in Canada, suggests that the market will continue to grow. It cites a 2002 Canadian Electricity Association market study that identified a $619 million annual potential market for geoexchange in Ontario alone, and suggests that the technology can save consumers between 35 and 70 per cent on their current heating bills.

In addition, CGC says a geothermal system often pays for itself in less time than a traditional HVAC (heating ventilation air conditioning) system.

And if all that is not enough reason to switch, geothermal energy delivers a more comfortable heat than burning fossil fuels, says Dennis Campbell, president of Polar Bear Water Source Pumps in Toronto, a company that manufactures and sells geothermal heating systems.

"The air remains at a more constant temperature, and you don't get the bursts of heat and cold spots that come with an oil or gas furnace," he says.

Campbell estimates that demand for his systems has doubled in the past year.

"But to tell you the truth, I don't keep track of the numbers. I'm too busy. I just know we're so swamped we can't keep up," he says.

His interest in heating systems began in the 1980s while selling high-density polyethylene pipe (HDPE) to industrial clients. Write Comment (0 Comments)
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Geothermal Water Keeps School Warm PDF Print E-mail
Written by Administrator   
Sunday, 05 March 2006
When sub-zero temperatures hit South Dakota...the cost of heating always seems to sky rocket. But one school in the central part of the state never gets a heating bill. The Midland school district relies on Mother Nature to heat it's classrooms.

With the cost to heat buildings climbing, South Dakota school districts are having to pinch pennies to pay the bills. But a system put in place more than 30 years ago in Midland keeps heating costs low.

Principal Denise Fox said, "We heat our building using a geothermal well."

Back in 1969, the town of Midland decided to harness the earth's energy by drilling a well to tap into a hot underground water source.

School Maintenance Mikel Williamson said, "And the well is about 3,300 feet deep. And that's pretty deep. It's part of the Yellowstone aquifer."

It's the water from the aquifer that keeps the buildings warm.

Williamson said, "There's a thermometer right down here. The temperature coming into the building right now, the temperature of the water is reading 150 degrees. It gets pumped through the six inch line and it goes all the way out throughout the building to each individual classroom"

Each classroom has a radiated heater hooked up to the geothermal water pipes; the hot water flows through the pipes to each of the 27 heaters.

Williamson said, "The heat from that water just heats up and then it's got the fans that turn on and off with the thermostat settings and it just blows in the warm air into the building."

It's air that keeps students comfortably warm. School workers say they rarely have heating issues.

Williamson said, "Basically, the maintenance I do here is I grease the pumps every three months and that's really about all you have to do to them."

Educators say you would never know something as simple as hot water heats the building.

Fox said, "It's always nice and comfortable here, so as far as a difference I haven't noticed that. In fact, when I signed on here I thought great. I won't have to worry about broiler problems in the school."

The building also gets hot water for cooking and drinking from the well, after it's been filtered. This efficient way of heating has been paying off for years.
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Last Updated ( Sunday, 05 March 2006 )
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