Rooftop Wind Power

  • Power lines lead from a wind turbine placed near a coast to catch steady breezes. New designs for smaller turbines might be used in urban areas where wind is more turbulent. (Photo by Lester Graham)

The government wants 20% of the
energy generated in the nation from renewable
resources. Today, we’re at a mere fraction of
that goal. Lisa Ann Pinkerton reports experts
believe the US could get there sooner if wind power
technology can be moved successfully to where the
electricity is actually consumed, America’s
cities:

Transcript

The government wants 20% of the
energy generated in the nation from renewable
resources. Today, we’re at a mere fraction of
that goal. Lisa Ann Pinkerton reports experts
believe the US could get there sooner if wind power
technology can be moved successfully to where the
electricity is actually consumed, America’s
cities:


Right next to Lake Erie, a large wind turbine spins hypnotically in the
breeze. Its three big propeller blades provide only around 6% of
the energy consumed at the museum where it’s located, the Great Lake
Science Center. So the big turbine is mainly for educational purposes.
The museum’s Executive Director, Linda Abraham Silver says turbine
catches the steady winds off the lake:


“We don’t want turbulence, that’s right. Steady wind is what produces
the best energy and saves the gears and instrumentation inside.”


The single wind turbine stands in a wide open space near Lake Erie, but here
on the streets of downtown Cleveland, the wind is blustery and
unpredictable. These conditions are hostile to traditional turbines.
So the conventional wisdom was wind power couldn’t flourish in urban
environments… that is, until now.


“I think the problem was the propeller, not the whole idea that wind
power was somehow unable to be captured in the city. Some people even tell
you there is no wind power in the city”


Bill Becker is an urban wind developer from Chicago. He’s abandoned the three-propeller design for a horizontal one.
And it kind of looks like a metal DNA double-helix strand. He says it’s
actually two turbine designs in one so the machine can function in low and high winds. The turbine, manufactured
by Aerotecture, is a lot smaller than traditional ones so it can be mounted on rooftops. Becker’s installed 16 on skyscrapers in
Boston and Chicago. They can generate enough electricity to power two homes annually in a typical breezy day.


Becker’s not the only inventor who thinks there are better alternatives
to expansive turbine wind farms sprouting up on ridges and bluffs
across the country. And in England, the three-blade concept isn’t dead
yet.


The company Quiet Revolution has a vertical turbine with blades curving
up and down it. It creates power in even the slightest breeze, but that
power isn’t any more than Becker’s model and it costs 4 times as much.


Instead of catching open wind, in California entrepreneurs are
capturing a very specific type of wind: breezes traveling up and over
building parapets. Those are walls that extend past the roof lines of
big box retailers and factories:


“There’s a potentially great wind resource on those buildings that’s
not being tapped into today.”


Spokesman Steve Gitlin says the company AeroVironment is tapping into
this wind with systems of 15 turbines each. These futuristic rotating
fans, each about six feet tall, line the parapets of flat-roofed
buildings:


“What we’ve done is figured out there’s a unique acceleration of wind over that edge of the building
so the turbine’s designed to actually extend above and angle slightly downward
over that acceleration zone.”


The AeroVironment system is the most expensive… six times as much as the Aerotecture double-helix
design and generates slightly more electricity. It does, however, operate in very low wind, five miles per hour or less.


Ken Silverstein says this range in cost and efficiency shows the urban wind industry is
still growing. He edits Energy Biz magazine, and
adds to make an impact on the market, these turbine costs must come
down. And the government could help jumpstart the industry:


“It needs to develop, it needs to reach economies of scale so that the
technology improves, so that the costs come down and so that wind becomes more widespread than it is today.”


But Silverstein says, urban wind designs like these offers the hope
that businesses and even homeowners could capture the energy of the wind
directly on their own.


For the Environment Report, I’m Lisa Ann Pinkerton

Related Links

Upgrading Tired Hospital Food

  • Two gourmet chefs managing the kitchen at St. Luke's Hospital in Duluth are adding organic vegetables to the menu. (Photo by Stephanie Hemphill)

Some hospitals are trying to heal the food that they serve. The GLRC’s Stephanie Hemphill takes us to one hospital that’s making efforts to spice up their menu:

Transcript

Some hospitals are trying to heal the food that they serve. The GLRC’s
Stephanie Hemphill takes us to one hospital that making efforts to spice
up their menu:


(Sound of elevator)


St. Luke’s is the smaller of Duluth’s two hospitals. Their motto could be
“we try harder.” Several years ago, the hospital put two chefs in charge
of the housekeeping, laundry, and food.


In the kitchen, there’s the usual industrial stoves and dishwashers, and a
long assembly line where workers fill the trays for patients, based on
what they’ve ordered.


“The patient fills out the menu, I’ll have this entrée and that salad and this
beverage; then as the tray moves down the conveyor belt, they look at the
menu and put on the appropriate products.”


Mark Branovan was a gourmet chef at restaurants in California’s wine
country. In that part of the world, they take their fresh fruits and
vegetables very seriously.


“We did very little of our produce buying from the big distributors; we
had local guys that would grow lettuce for us, and herbs for us, and tomatoes…
anything we wanted. So that just kind of rolled over for us into, if
we can do it for a restaurant, why can’t we do it for a hospital?”


It’s harder to do in this part of the country, where you can grow lettuce
for about half the year and you’re lucky to get a tomato at all. But
Branovan and his colleague, LeeAnn Tomczyk, decided not to let that
stop them.


Tomczyk was a chef in a trendy restaurant in Wisconsin before she took
the job at the hospital. She says when she first came here, she was
appalled at some of the things on the menu.


“YOu know the patient was able to pick a jell-o salad and a piece of cake.
Well, to me jell-o is a dessert but to them it was their salad and that
was their vegetable, and that wasn’t right.”


Tomczyk and Branovan started to add more fruits and vegetables,
including organic items, to the menu, but they learned to pick their
battles.


“When I tried to change some of the casserole dishes, and some of the
traditional northern Minnesota fare, I was met with some serious
resistance from our customers and our patients who said, ‘Yeah, we have
tater tot hot dish on our menu because we like it.'”


One of the first items to change was the milk. Now the hospital serves
hormone-free milk to patients in the rooms and workers in the cafeteria.
Tomczyk says she’s convinced hormone-free milk and organic food are
healthier. She says an organization devoted to helping people heal, like a
hospital, needs to think about healing in broad terms, even globally. She
says buying local food avoids long-distance transportation, with its heavy
reliance on polluting fossil fuels.


“And the introduction of pesticides and herbicides, and that getting into
our water systems, it’s that whole cycle, and we’re using more and more
these days, and I think it’s just got out of hand.”


The hospital is also committed to reducing waste. It freezes unused
portions and gives them to soup kitchens and homeless shelters. It sends
its food waste to the city compost pile.


St. Luke’s is a member of a hospital buying group that negotiates prices
with big producers like Pillsbury. Each hospital is supposed to buy a
certain percentage of its food through the buying group. When Branovan
and Tomczyk asked the distributor for hormone-free milk, the distributor
didn’t carry it.


“We had to actually get a waiver that says they will allow us to buy off-
contract.”


Branovan got a similar waiver to buy organic fresh fruit, and greens for
the cafeteria salad bar. He hopes to add more organic and locally-grown
foods.


Branovan says St. Luke’s is the first hospital in the region to ask the
buying group to supply hormone-free milk and organic vegetables, but
hospitals and schools on the west coast and east coast are doing it on a larger
scale.


James Pond is editor of Food Service Director, a trade magazine.
He says the movement will grow.


“The pricing advantages will in some ways level out, where if it becomes
important enough to the clientele, the food service operators will respond
by providing products in this manner.”


Some hospitals organize a farmer’s market to serve their workers, as a
way to introduce them to organic and local foods. Then they add those
foods to the cafeteria and patient meals. At St. Luke’s, they feature
organic food at company parties.


For the GLRC, I’m Stephanie Hemphill.

Related Links

Lessons From Wildlife Photographers

  • Carl Sams and Jean Stoick have been photographing wildlife for more than two decades. (Photo by Charity Nebbe)

Wildlife photographers Carl Sams and Jean Stoick have been taking pictures of Michigan wildlife for more than twenty years. What started as a hobby has become a lucrative business and spawned two best-selling children’s books. But this year, the work has become about more than just taking beautiful pictures. The Great Lakes Radio Consortium’s Charity Nebbe has the story:

Transcript

Wildlife photographers Carl Sams and Jean Stoick have been taking pictures of Michigan wildlife for more than twenty years. What started as a hobby has become a lucrative business and spawned two best-selling children’s books. But this year, the work has become about more than just taking beautiful pictures. The Great Lakes Radio Consortium’s Charity Nebbe has the story:


(Sound of birds chirping)


It’s early morning, and Carl Sams and his wife and partner, Jean Stoick, have gotten up to take pictures of wildlife in the early morning light.


“Oh, look, we got a deer. Right out there in the water. Is that beautiful. This is incredible. The very doe – I worked here back in 1982 – she crossed this lake, just the lake here, and she was pregnant, and since then I’ve taken over a hundred thousand pictures. Now this doe, she’s actually out eating lily pads right now, and this is typical for deer at this time of year to do that.”


For Carl, taking pictures of wildlife came naturally; he’s always loved spending time outdoors.


“I grew up hunting and fishing, but I sold my guns and bows for a down payment on a lens and now I can shoot a hundred thousand deer and not be arrested, no seasons, no license, and I can be out here all the time. Not many people can make a living at something that they really love. This is a dream.”


When Carl started to make a living from his pictures, he and Jean bought a second camera so she could join him in the field. Most of their pictures are taken near their home at a park in southeast Michigan. And over the past twenty years, Carl and Jean seem to have developed a rapport with the creatures they photograph.


(Sound of camera)


“Okay, ready?”


Jean coaxes a wing-flap out of a female swan as if she was a fashion model.


“Okay, let’s do it.”


(Sound of camera snapping)


STOICK: “Wasn’t she perfect?”


NEBBE: “Exactly on cue.”


STOICK: “Exactly on cue.”


For many years, they sold prints of their work to magazines, calendars, greeting card companies, and on the art show circuit. Then recently, they decided to create a book about white-tailed deer. But as they were selecting their pictures, Jean’s imagination took them in another direction.


“I noticed that we had an awful lot of good images of the deer and birds interacting with a particular snowman that we had built three years earlier. So I mentioned to Carl, I says, ‘You know, why not do a children’s book? It would be a whole lot more fun.'”


That first book became the best-selling children’s book Stranger in the Woods. Their second book, Lost in the Woods, is the story of a fawn alone in the forest. All of the animals it encouters worry that the fawn is lost, but in the end, we learn its mother leaves the baby alone because it has no scent and won’t attract predators. She’s free to forage for food and come back later to take care of her fawn.


The pictures are meant to be beautiful and the book fun to read, but Carl and Jean are hoping the readers will remember what they learn.


“The lost fawn concept is a mistake that people make over and over every spring. They unintentionally rescue fawns that they think have been abandoned, and children are good messengers.”


The couple is working to spread their message with visits to elementary schools and libraries. That fills a lot of their days, but almost every morning and every evening, they can be found doing what they love to do most: taking pictures.


“It’s amazing how graceful she is. I think sometimes she likes to pose. Here she comes again.”


For the GLRC, I’m Charity Nebbe.

Related Links

Companies Push for Forest Certification

  • Magazine publishers and other companies are thinking ahead and getting their paper from forests that have been certified. But what does this really mean? (Photo by Stanley Elliott)

Officials in the Midwest want to prove they’re not damaging their state forests. States that sell timber to paper companies are spending thousands of dollars to earn a certificate that says they’re managing the forests in a sustainable way. Paper producers are demanding that state foresters earn certification because officials want to stave off protests from consumers. The Great Lakes Radio Consortium’s Celeste Headlee reports:

Transcript

Officials in the Midwest want to prove they’re not damaging their state forests. States that sell timber to paper companies are spending thousand of dollars to earn a certificate that says they’re managing the forests in a sustainable way. Paper producers are demanding that state foresters earn certification because officials want to stave off protests from consumers. The Great Lakes Radio Consortium’s Celeste Headlee reports:


It’s lunchtime and employees on break from Compuware in downtown Detroit are browisng through the magazine racks at Borders. Melody Kranz says she reads three different magazines every month. She says she is an avid recycler and an impassioned environmentalist, but never considered what kind of paper was going into her magazines.


“I don’t know why I haven’t thought about it, I just haven’t. I will now. Because I’m a gardening nut, I love to garden. So yeah, I just never really thought about it.”


But executive David Refkin is betting that Franz and others like her would think twice before picking up Time Magazine if they thought a forest was demolished to make the paper. Refkin is the Director of Sustainable Development for Time Incorporated. He says he’s noticed a strong surge in environmental awareness over the past two or three years.


“We don’t want people looking at a magazine and feeling guilty that a stream has been damaged and the fish are dying in there, or that habitats aren’t being protected because people are practicing bad forestry practices.”


Refkin says his company wants to take action now, before consumer groups decide to boycott its magazines over ecological issues. Time uses more coated paper for its publications than any other company in the U.S. The company is asking that 80 percent of all paper products Time buys be certified by 2006.


To the average consumer, that may not seem like big news. But for paper producers and foresters, it’s earth shattering. Larry Pedersen is with the Michigan Department of Natural Resources. Pedersen says getting certified means years of work for state employees. The government has to prove to investigators that its management standards take into account issues such as biodiversity, water quality, soil erosion and wildlife habitat. Pedersen says the state is also required to provide records for each tree from the moments it’s planted or inventoried to the time it’s cut down and then made into planks or paper. But he says it’s worth the effort.


“A number of wood and paper-using companies brought it to our attention that they needed to have certified products because their consumers were demanding those. And with us having four-million acres of state forestlands, we saw the writing on the wall that we needed to jump on this.”


State forests in the region generate a lot of revenue. Wisconsin’s forests earn two and a half million dollars from timber sales and Ohio pulls in almost three million. Michigan’s forests bring in 30 million dollars annually. Earlier this year, Michigan’s Governor Jennifer Granholm announced that all state forests will be certified by January 1st of 2006. And the Great Lakes State is not alone… New York, Wisconsin, and Maine are also pursuing certification and Ohio and other states are considering it.


Andrew Shalit, with the environmental activist group Ecopledge, says he’s glad Time Warner is encouraging paper companies and state governments to get certified. But he says that doesn’t necessarily mean the paper is produced in an environmentally friendly way.


“It’s great to say that they’re going to get all of their paper from certified forests. The question is, who is certifying? And in the case of Time Warner, a lot of the forests are certified by a group called SFI, the Sustainable Forestry Initiative, and their standards are so weak as to be almost meaningless.”


There’s a heated debate over just what certification means. There are currently two groups that certify forests in the U.S. The Sustainable Forestry Initiative, or SFI, was originally founded by the timber industry but is now an independent body. The Forest Stewardship council, or FSC, came out of the environmental movement… or more specifically, out of the effort to protect South American rainforests. Shalit says he doesn’t think SFI certification is as rigorous or as comprehensive as FSC.


“It really is a problem for the consumer because you see something in the store and it has a little green label on it with a picture of a tree and it says sustainably certified, and you think you’re buying something good. It’s hard for the individual consumer to keep up with that.”


Shalit says several states, like Michigan, have solved the dilemma of rival certification programs by getting dual certification. he says although the system has flaws, it will improve if consumers demand more stringent forestry regulations.


Executives at Time Warner hope they can avoid boycotts and pickets by taking action preemptively. The company is leading the push for forest certification in the U.S., and environmentalists say the federal government may have to bow to pressure eventually and get the national forests certified as well.


For the Great Lakes Radio Consortium, I’m Celeste Headlee.

Related Links

Diesel Maker Works Toward Cleaner Engines

The Environmental Protection Agency last year set new emissions standards for diesel truck engines. Most of those engines are manufactured in the Midwest by Indiana-based Cummins, Michigan-based Detroit Diesel, Pennsylvania-based Mack Truck, and Illinois-based Caterpillar. One of those companies is trying a different approach to meet the new standards. The Great Lakes Radio Consortium’s Jonathan Ahl reports:

Transcript

The Environmental Protection Agency last year set new emissions
standards for diesel truck engines. Most of those engines are
manufactured in the Midwest by Indiana-based Cummins,
Michigan-based Detroit Diesel, Pennsylvania-based Mack Truck,
and Illinois-based Caterpillar. One of those companies is
trying a different approach to meet the new standards. The
Great Lakes Radio Consortium’s Jonathan Ahl reports:


A truck engine the size of a
small couch is up on blocks at the
testing center of Caterpillar’s engine
research division just
outside of Peoria, Illinois. When it starts up,
you can feel
the vibrations.


(ambient sound, engine)


While this engine for a typical 18-wheeler is
large and loud,
the engineers who designed it say what makes it
different is
very small. Tana Utley is an engineering
director for
Caterpillar.


“We actually talk about the amount of fuel
that an injector
injects in terms of cubic milliliters. We measure the
time in
milliseconds. And even the degree of accuracy that is required to
measure what we are doing is not unlike what you’d find if
were to go to the space program and look at some of the things
they do for NASA.”


Caterpillar is trying a different approach to reduce
pollution from the engines on vehicles like school busses, dump trucks,
and 18-wheelers. Other engine makers are using a process
called
cooled exhaust gas recirculation. That essentially
means
cooling off the exhaust from the engine that
includes
pollutants, and running it back through the engine
instead of
releasing it into the air. Cooling the exhaust makes it
easier for
filters to pick up pollutants, and reduces the amount of
outside
air required to run the engine. But Caterpillar says it has a
better system. They call it ACERT, or Advanced
Combustion
Emissions Reduction Technology. ACERT doesn’t bank
on one thing
to clean up engine emissions like its competitors.
Tana Utley
says it is a combination of dozens of improvements to
the way a
large diesel engine works. She says one
example is a second
turbine placed at the end of the
engine.


“When we put a series turbo on, what we
do is we take the
exhaust energy that would normally be wasted and go out to the
environment at that temperature, the
second turbine takes that
temperature and turns it into useful work. That useful
work is used to add energy to the intake air, which helps us to
reduce the
fuel consumption. It also provides plenty of cool, clean air to
the engine to give us clean combustion.”


Utley says improvements to the engines air intakes,
fuel
injection systems, and the electronics
that run the engine all
combine to make for cleaner exhaust. John Campbell is
Caterpillar’s director of On-Highway Engine Products. He says
the ACERT engine follow Cat’s mission of taking a comprehensive
approach to solving problems.


“Who invented ACERT? The answer is Caterpillar invented ACERT.
Because it took a series of people with all kinds of
different
backgrounds, working together, and if you will,
playing off of
each other. And ACERT development
was a true teamwork effort
among a broad-based skill of people to make it occur and
actually bring it to production.”

Campbell says because ACERT does not rely on one piece of
equipment or technology to comply with new standards, Cat
will
have an easier time of meeting the next round
of emission
standards in 2007. But not everyone
shares Caterpillar’s
confidence that ACERT will be the clear
leader in the engine
market. Mike Osenga is the publisher of
Diesel Progress, an engine trade magazine. He says Caterpillar’s
unique approach to the engine market goes beyond the technology.

“The interesting thing that Caterpillar did with
ACERT is they
said, not only does it, in their opinion, change
the game
technically, but they also intended to charge more for ACERT
equipped engines. Especially the truck engine
market is hugely
price competitive. So Caterpillar has said
they’re coming in
with a new technology and they intend to get more
money for it.
That is typically not a path taken in moving a technology
into to a market.”

Osenga says it is impossible to predict which technology will
prevail, or which engine manufacturer will have an easier time
meeting future emissions standards. He says the biggest
question mark is durability. Osenga says none of the engines
currently on the market have been tested for the hundreds of
thousands of miles trucking companies demand from their engines.


For the Great Lakes Radio Consortium, I’m Jonathan Ahl.