Monday, July 27, 2009

Harnessing Tidal Power

by Malcolm

Harnessing Tidal Power

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Ocean has huge energy which needs to be harnessed properly for its usage. Tidal power is the most predictable and reliable source, that is based on tried & tested principles of hydrodynamics and electrical engineering. Tides occur reliably and predictably, irrespective of weather changes. Ocean power energy can be created using tides and ocean current.

Tides help in production of tidal energy through tidal dams and tidal turbines. In case of tidal dams, power is created using a barrage at a bay or estuary with large tidal range. Tidal turbines take advantage of fast-flowing ocean currents to create energy. The most prolific tidal turbines are horizontal axis turbines that in many ways are analogous to wind turbines. The main difference is size. Tidal turbines generating 1 MW of power can be up to one-third the size of a wind turbine with a similar generating capacity.

Ocean current also holds a great amount of strength and energy. The total power of waves breaking around the world's coastlines is estimated at 2-3 million megawatts, which can be captured directly from surface waves or from pressure fluctuations below the surface.

Tidal Wave Energy

From Home Security Blog

The Tidal wave energy is an alternative energy source that has been in use for decades. Tidal mills were constructed by people who used it to grind grain, and this was the first use of tidal energy for power in olden days. The Tidal power generation is a clean process.

Another alternate energy source is Solar Energy that is used for generating electricity, heating water and it is also used to create fuel for your vehicles. Most of the countries are promoting and encouraging the use of solar power by giving rebates and tax credits on the solar panels purchased by people.

The burning or decomposition of corn, corn stalks, wheat, twigs,pine cones or bark generated biomass energy.This energy is used as fuel to run the vehicles or produce heat at homes. Over 100 years back only such technology of energy generation was practised. The biodiesel fuels that are used to run the vehicles are ethanol or methane.
Today,the hydrogen energy is considered as the future generation of alternate source of energy because of its availability in abundance. One can idealize driving their vechiles on pure water. It has been done as a matter of fact. Our vechiles will have an electrolysis unit that will generate HHO,this increaes the gas mileage by over 20-50% with a low-budget of less than $100.

Thursday, July 23, 2009

Tidal Power New York

From GreenPacks
by Martin

New York is one of the most glittering places in the United States, not just for its opulence, but for the glowing lights as well. What is hurting though is the large chunk of energy consumed on a daily basis to power those lights. With the judicious use of energy becoming a priority to help cool the earth it is mandatory to think of greener solutions in the Big Apple.



One such idea is the use of the tidal waters proposed by Richard Garber and Brain Novello in a project designed for the Metropolis magazine 2009 Next Generation Design Competition.

These two plan to power the street lamps using tidal power. The first requirement would be to create docking systems using modular and floating docks. These docks will use three vertical turbines to harness energy from the moving river currents, eventually producing electricity.

The power generated will then be used to lighten a network of LED lamps across the streets. Each of these modules on the docking station will be capable of producing 24 kilowatts of power from a 4 mph current moving in any direction.





The docks would also feature green spaces and tidal pools to support wildlife. The project concept did not win the competition but it is still an effective backup for the already in place tidal power stations.

Eco Awareness Society

Eco Awareness Society
408 Browns Mountain Rd., RR 1, Merigomish, NS B0K 1G0
902-926-2297


FOR IMMEDIATE RELEASE

CONTACT: Susan Overmyer, Media Relations, Eco Awareness Society
902-926-2297
sdovermyer@auracom.com


“ECO AWARENESS SOCIETY AND RESIDENTS OF DIGBY MUNICIPALITY JOIN FORCES”

Residents of Digby Municipality concerned about the Digby Wind Power Project have become affiliate members of the Eco Awareness Society. The groups have joined together to share information and resources on the impacts of industrial wind power plants on health, the environment and economy as well as quality of life. Having shared concerns, and by joining forces we feel we can better promote awareness of the true impacts of industrial wind power projects as well as speak with a stronger unified voice.

Both projects, Glen Dhu and Digby are in areas ranked “very high” for scenic quality value. This ranking, from Natural History of Nova Scotia, Volume 1, published by the Nova Scotia Museum of Natural History, is extremely rare for mainland Nova Scotia.

In information obtained through the freedom of information act, a government reviewer questioned why “the boundary of the [Glen Dhu] project site…extends considerably south of the area on which the wind turbines are proposed” and asked “Is there a future phase proposed for the project which is not addressed in the draft EA document?”

Indeed, phase two of the Glen Dhu project places 60 turbines in Marshy Hope, yet the cumulative impact of 90 industrial scale wind turbines on this area has never been considered by Nova Scotia Environment. The Marshy Hope area is already under consideration for protection under the provincial government’s program “of protecting 12 per cent of Nova Scotia’s land mass from development”. MLA Angus MacIsaac, who is seeking this protection for Marshy Hope has stated, “We can not take for granted that these areas will be there for generations to come” and “requested that the government take action to protect this ‘Nova Scotia gem’”. Unfortunately, the land in Marshy Hope is already under lease agreement with Shear Wind Inc.




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Similarly, Digby Neck is a unique geographical feature that exists nowhere else in the world. It is considered to be one of Nova Scotia’s most spectacular natural regions with a rich ecosystem. The area is famous for its whale and seabird watching tours as well as its striking panoramas. The Nova Scotia Department of Tourism, Culture and Heritage, in response to the Digby Wind Power Project’s Environmental Assessment stated that the area has “an extensive history and natural beauty which gives it tourism appeal, and expressed concern that no “consideration [was] given to the potential issues” that their department had raised about this project.

As well, the Canadian Parks and Wilderness Society (CPAWS-NS), considered to be “the pre-eminent, science-based non-profit wilderness conservation organization in Canada” is in the early stages of working to protect Digby Neck and Islands as a National Marine Conservation Area. CPAWS stated that “industrial development would endanger the pristine nature and viewscapes of the region as well as put a growing ecotourism industry at risk.”

To destroy these rare and unspoiled areas with massive industrial wind power plants and infrastructure is difficult to comprehend. It is not just the tourist trade or the spectacular natural views; it is the whole culture and identity of Nova Scotia that is at risk.


# # # #

July 21, 2009


















The Eco Awareness Society is a non-profit organization whose mission is to uphold these principles: that “a subset of society should not be forced to bear the cost of a benefit for the larger society”, that a landowner’s right to full use and enjoyment of their property be upheld and not taken or hindered for public or private use or development, without just compensation, and that any policy or development with regard to the environment and landscape of Nova Scotia be shown to be effective and based on the principals of environmental sustainability and stewardship of our precious resources.*

*Based on the Canadian Charter of Rights and the Fifth Amendment, U.S. Constitution

Wednesday, July 22, 2009

Bats and Wind Turbines

From MSNBC
by Charles Q Choi

Radar could save bats from wind turbines
Wind turbines inadvertently kill bats and other flying creatures
These images are of the noseleaf of a typical horseshoe bat species (left) vs. that of Bourret's horseshoe bat, the Rhinolophus paradoxolophus (right). Computer modeling indicates the extreme nose is used to create a highly focused sonar beam.
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Rolf Mueller

LiveScience



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By Charles Q. Choi

updated 1:40 p.m. ET July 21, 2009
Bats use sonar to navigate and hunt. Many have been killed by wind turbines, however, which their sonar doesn't seem to recognize as a danger. Surprisingly, radar signals could help keep bats away from wind turbines, scientists have now discovered.

Although wind power promises to be a clean source of energy, some researchers have raised concerns that wind turbines inadvertently kill bats and other flying creatures. For instance, in 2004, over the course of six weeks, roughly 1,764 and 2,900 bats were killed at two wind farms in Pennsylvania and West Virginia, respectively. The bats might not be killed by the wind turbine blades directly, but instead by the sudden drop in air pressure the swinging rotors induce, which in turn cause their lungs to over-expand and burst surrounding blood vessels.

"Given the growing number of wind turbines worldwide, this is going to be an increasing problem, no question about that," said researcher Paul Racey, a bat biologist at the University of Aberdeen in Scotland.

Scientists have tried keeping birds from colliding into wind turbines by making their rotors easier to see. And to discourage bats away from wind farms, researchers have tried white noise generators as deterrents. However, these "acoustic scarecrows" have not worked well, Racey said, probably because these sound systems are not strong enough to influence bats within the entire space that rotors sweep through.

A student at the University of Aberdeen first noticed that bats shied away from radar installations while driving past them. He was holding a bat detector out the window to scope out bat activity on the drive back home from out in the field. (Bat detectors are gadgets that scan for ultrasonic bat calls.)

Although bats use sound waves to steer in the dark by echolocation, radar employs radio waves, a form of light, so one might at first assume that radar would have no effect on bats. To see if radar could keep bats away from wind turbines, the scientists at the University of Aberdeen installed small portable marine radar units at 20 bat foraging sites in Scotland — woodland and riverbank areas where insect densities are high. The researchers monitored bat presence for 58 nights using bat detectors.

The researchers discovered that radar helped keep bats away, reducing bat activity by 30 to 40 percent. The radar did not keep insects away, which suggests that however the radar works as a deterrent, it does so by influencing the bats directly and not just their food.

So how does radar keep bats away? The researchers explained that a great deal of research suggests that people can actually hear radar pulses.

"This was noticed when radar arrays first started up during World War II," Racey said. "A portion of radar operators said they heard clicks in their ears when they were switched on."


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Radar signals can lead to small but rapid spikes of heat in the head that generate sound waves, which in turn stimulate the ear.

"A bat's hearing is much more sensitive than ours," Racey noted. "It may be so sensitive that even a tiny amount of sound caused by electromagnetic radiation is enough to drive them out of there."

Future research can design a radar system optimized at deterring bats.

Saturday, July 18, 2009

Letter to Council- Sister Bonnie Bethany Place

To the Municipal Council of the District of Digby
And the Members of the Planning Advisory Committee (PAC)
July 15,2009
Dear Warden; Councilors, and PAC Members:
As you are aware, we at Bethany Place have a couple of concerns regarding the
placement of the wind turbines so near to our place of residence. One is the disturbance
of our source of water as we are on a gravity fed dug well.
Another concern is the continuous noise from the rotation of the blades on the turbines
2417. Our ministry at the house is one of , sponsoring Quiet Days and Retreat Days tor
individuals and small groups. The incessant whir from the turbines could significantly
interfere with a person's quiet and sense of peace and reflection. If this should happen
then our ministry of hospitality and prayer would virtually have to cease. Should this
happen we would have no other option but to try to sell our property at a reduced price as
real estate prices will drop considerably and relocate somewhere else in the province.
Should we have to move from this area that would mean the outreach and ministry that
eminates from the Bethany Bargain Bin at 125 First Avenue would conceivably cease to
function. This, I believe, would bave a significant impact on the surrounding community
of Digby and area as we exist to meet the needs of people that Society Services and other
agencies don't meet. People in need of furniture, household items, etc., are given these
items to assist them in settling into new residences/apartments. We help people cover
their rents, fuels bills, telephone bills, medications, dental work, glasses and food that
isn't available at the local food bank.
We also assist the food bank:financially; we assist Juniper House Outreach; we assist
people referred to us from Family Resources and Social Services and Mental Health. We
support the Breakfast program at the Digby Elementary School. Should our ministry and
outreach cease to exist these services would have to be picked up by others in the
community.
Last year the Bethany Bargain Bin generated $49,260,.50 into the local economy. Ijust
mention this as I feel it is worth consideration when decisions are being made at your
council meetings regarding the placement of these wind turbines in our area. We feel that
the two that have been allocated near our property are placed toeclose to our home.
Respectfully sumitted,
~~~\~~\f).
Sister Bonnie, S.L.S.M.

An Open Letter from Tom

Digby Municipality: Kindly distribute a copy of this to all the councilors.



To Maritza Adams, District #2 Councilor, Municipality of Digby



Dear Maritza,

I thank you for your work on our behalf as our
elected municipal councilor. However, here in your District #2 on the
south shore of St. Mary's Bay, I have heard rumours
that you are not supportive of the Wind By-law. I do hope that these rumours
are without foundation.



As a District #2 resident, voter and
businessman, I respectfully ask that you support the Wind Energy By-law.
I make this appeal because of my support for quality of life and quality of the
environment within our larger area around St. Mary’s Bay and my ongoing active
support for the development of sustainable economic development, the type which
enhances rather than diminishes this quality of life within the beautiful but
delicate SW Nova Biosphere Reserve of which we are a part.



More specifically, this wind park on Digby Neck
will directly and negatively impact businesses in your district #2, despite
being far from the proposed Digby Neck site. So I also ask for your
support of the Wind By-law because of the impact that this wind farm blemish on
the Digby Neck environment will certainly have on my Japanese Art
Gallery business and many
other businesses in your district.



A high percentage of my gallery customers
drop in as they drive through Route 1 and 101 on their way to or from
Digby Neck and Islands, drawn here from around
the world to this area because of its natural beauty and accessibility and
because of its inclusion in the UNESCO designated Biosphere Reserve.



In past years, I have seen as much as a 50% drop in my
business caused by disruptions on Digby Neck such as resurfacing
the road down the Neck and/or Islands.
Thousands of tourists chose to avoid the St. Mary's Bay area entirely. They
chose the South Shore route when they learned from Nova
Scotia Tourist Bureau personnel of possible disruptions to traffic on Digby
Neck during that period of heavy equipment use on route 217.



The construction and maintenance of this
wind park will certainly impact businesses throughout your voter district here
on this south side of St. Mary's Bay in like manner but in a much more drastic
fashion and for a much more sustained period of time. As our local councillor
accountable
to us as voters, we ask your help in preventing this.



Digby Neck and Islands
is unique and will draw people through our district #2 for years to come IF not
blemished by industrial desecration and greed. This will happen if wise voters
and equally wise and visionary councilors choose by-laws to protect the
sustainability of our lands and coastlines and sea while promoting
environmentally sustainable industry and jobs.



I am not opposed to wind energy. I am opposed to wind energy located
purely for
reasons of maximizing corporate profit within people's dwelling space
when there is so much non-dwelling space where such equipment could be located,
for example, in the upper-Sissiboo
River watershed.



Based on your vote as my
representative on this By-law issue and subsequent decisions you will make on
environmentally sustainable economic growth during the rest of your term as
councilor, as a voter and activist seeking environmentally sustainable jobs for
our municipality I look forward to the possibility of promoting your candidacy
for re-election in my district in the next municipal election.



I do wish to hear your thoughts,
Maritza, on these issues and await your timely response to my views and to
my specific request for your support on this By-law issue on which so many have
worked for so long.



With kind regards,



Tom



Tom Haynes-Paton

Japanese Woodblock Prints & Antiques Gallery

PO Box 11, Barton, B0W1H0, Nova Scotia

902-245-2347 Japanesegallery@gmail.com
website japanesewoodblockprints.ca
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