Saving Energy With Auto Switches

  • According to the EPA, sixty-percent of lighting actually goes to lighting unoccupied rooms. (Photo Courtesy of Vincent Ma CC-2.0)

Saving energy can be as simple as turning off the light switch when you leave a room. But in most homes… that doesn’t happen all the time. Lester Graham reports… motion sensing light switches are becoming more popular because they’ll switch on and off automatically.

Transcript

Saving energy can be as simple as turning off the light switch when you leave a room. But in most homes… that doesn’t happen all the time. Lester Graham reports… motion sensing light switches are become more popular because they’ll switch on and off automatically.

In some families, Dad stomping around the house, turning off lights and yelling to no one in particular is legendary.

“How many times do I have to tell you, turn off those lights.”

Don’t burst a blood vessel there, pal.

Well, Dad might have had a point. Matt Grocoff with Greenovation.TV says he’s been poking around the Environmental Protection Agency’s website and found this:

“Sixty-percent of lighting actually goes to lighting an unoccupied room, hallways, bathrooms, your bedroom. Drive by any neighborhood house and you’ll see eight rooms lit. How many of those houses have eight people in them.”

Matt says there’s a solution. Motion-sensing light switches. They can be set to turn on when you walk into a room and turn themselves off when you leave… staying on for a minute or two… or five… or a half-hour. Whatever you set it to.

There are a lot of different types. Laurie Gross is President of Gross Electric in Ohio and Michigan. They’ve been selling lamps and lights and switches for one-hundred years.

She says there are light switches that turn on when you enter and off when you leave, others that you have to turn on and they turn off when the room is empty. Different technology works –well– differently. Gross says passive infrared works well for pantries or kitchens because they detect motion.

“Then there’s ultrasonic which doesn’t need a line-of-sight. So, those are good in public bathrooms so when it senses heat, when go in there, it knows you’re there and turns off if you take a little longer than expected to take.”

And there are switches that use both infrared and ultrasonic… good for places like big office spaces.

You can expect to spend 50 – 60 bucks or more for a good one, depending on what you want. There are cheaper sensor light switches out there… but in this case, you really do get what you pay for.

Now… these switches use a tiny bit of power themselves… so the best place for them is in a room where leaving the light bulb on is not likely to be noticed for a while. Matt tells the story of forgetting to turn off a light in the garage during vacation. That bulb burned for two weeks. A sensor switch makes a lot of sense in a place like that… or in a closet… or a room you don’t use a lot.

Matt Grocoff and his wife Kelly are working to make their 110 year old house the oldest net-zero energy home in America. And he says he loves having motion sensing switches in key areas for the convenience as well as the energy savings.

“We open the door in the kitchen and come through the door with loads of groceries and the light comes on automatically. You don’t have to do the elbow dance.”

His wife Kelly says for her… it’s avoiding a little childhood terror.

“I have a little PTSD from when I was younger and my Dad was constantly harassing us to turn the lights off. Now, I know if I leave the room and I don’t turn the light off, it’s going to go off eventually instead of having my Dad chase me down and giving me some lecture about turning the lights off, saving energy, saving money, blah, blah, blah.”

Funny story about that. Kelly’s Mom, Jane Casselman was visiting when I was at the couple’s house… and she started laughing about Dad lecturing about the lights.

“’Cause in the evening, yours truly would turn all the lights off before going to bed.”

Heh– busted.

For The Environment Report… I’m Lester Graham.

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Only Trees Can Prevent Forest Fires?

  • Active flame front of the Zaca Fire, the second largest fire on record in California. (U.S. Forest Service photo by John Newman)

New technology might help the US
Forest Service detect fires in remote areas
more quickly. Lester Graham reports:

Transcript

New technology might help the US
Forest Service detect fires in remote areas
more quickly. Lester Graham reports:

A chemical reaction makes batteries generate electricity. There’s a ph difference
between trees and the soil around them. MIT researchers say they can use that
chemical difference to generate a tiny amount of electricity.

Andreas Mershin and his MIT colleagues say it’s just enough power to trickle charge
sensors that read temperature and humidity. Then they send that data to the U.S.
Forest Service so it can determine the risk of fire.

“The advantage comes from the fact you no longer need to be going to very remote
locations and changing batteries all the time.”

The Forest Service will be testing these sensors next spring. They cost about one-tenth
of other sensors that need batteries. So it could mean more sensors in remote
locations. That way the Forest Service could have a better idea of if and when it needs
to put fire equipment near hot, dry areas.

For The Environment Report, this is Lester Graham.

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Color Changing Bacteria Detector

  • A team at Tufts University is working on sensors that could change color to tell you if a bag of lettuce has dangerous bacteria in it. (Photo by Ken Hammond, courtesy of the USDA)

Researchers are working on a tool
that could tell you if your food is safe
to eat before you break open the bag.
Rebecca Williams has more:

Transcript

Researchers are working on a tool
that could tell you if your food is safe
to eat before you break open the bag.
Rebecca Williams has more:

A team at Tufts University is working on sensors that could change color to
tell you if a bag of lettuce has dangerous bacteria in it.

The special ingredient is silk. They boiled silkworm cocoons. And made a
thin silk film out of the proteins. The silk film has color changing properties
– like a butterfly’s wing.

Fio Omenetto is the lead researcher. He says it could be possible to activate
the film so it detects the presence of E. coli. Then the film could be put in a
bag of spinach.

“So immediately by looking at color change you will be able to tell whether
the spinach is good to eat or not.”

Omenetto says this is still pretty futuristic at this point. He says it’ll
probably be at least five years before you might see this at the grocery store.

For The Environment Report, I’m Rebecca Williams.

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Utilities Use Fish to Test Water

Some major U.S. cities are adding a new type of watchdog to
their drinking water systems. Rebecca Williams reports that watchdog
is a fish:

Transcript

Some major U.S. cities are adding a new type of watchdog to their drinking
water systems. Rebecca Williams reports that watchdog is a fish:


New York City and San Francisco are two of the cities making room for fish
tanks in their water treatment plants. They’re using a common fish called
bluegill to test for toxins in the water supply.


Tony Winnicker is with the San Francisco Public Utilities Commission. He
says the system sends pre-treated water through the tank where the bluegill are swimming
around.


“If something unusual enters their gill system, particularly bluegill, which
are highly sensitive, they cough, their body reacts to it and the sensors
pick that up.”


The sensors hooked up to the tank trigger emails to water plant workers to
let them know the fish are acting funny. The system also automatically takes water
samples at the moment the fish react.


Winnicker says the system detects anything from a change in clarity to
toxins that could be very harmful to people.


For the Environment Report, I’m Rebecca Williams.

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Wind Energy Sweeping Away Wildlife?

  • A single wind turbine can change air currents, creating dangerous winds for birds and other airborne wildlife. (Photo by Michael Tyas)

Wind energy is one of the fastest growing sources of new electricity in the United States. For some environmentalists, that’s
good news. Wind turbines don’t spew smoke into the air. There’s no nuclear by-product. But there is an environmental risk. To see it, you have to view the wind turbines through the eyes of a bird.
The GLRC’s Dustin Dwyer has more:

Transcript

Wind energy is one of the fastest growing sources of new electricity in the United States.
For some environmentalists, that’s good news. Wind turbines don’t spew smoke into the
air. There’s no nuclear byproduct. But there is an environmental risk. To see it, you
have to view the wind turbines through the eyes of a bird. The GLRC’s Dustin Dwyer
has more:


Chandler Robbins has spent a lot of time studying how birds kill themselves. He says he
would go out on windy nights to the Washington Monument in Washington, D.C. He’d
stand at the bottom of the 555 foot tall obelisk and watch the birds at the top:


“Just as they get to the tower, they just go around the edge of it and bang, the turbulence
from the winds going around the tower, sweeps those birds against the tower, and they’re
killed.”


Speaking at a conference, Robbins tells the crowd he once watched more than 500 birds
slam into the monument in one night, and that monument is standing still. Now imagine
wind turbines, some of them about as tall as the Washington Monument, with spinning
blades that reach nearly a football field in diameter.


Alex Hoar is with the U.S. Fish and Wildlife Service. He says a single turbine can now
change air currents for three acres around the turbine itself:


“So, if you put up a hundred turbines, the blades are sweeping 300 acres. So, that’s a large
space. And what we don’t know is when are birds and bats at risk.”


We don’t know because no one has really studied it. Both Alex Hoar and Chandler
Robbins say scientists know a lot about where birds take off and where they land. They
know about migration patterns, but they don’t know about what birds do, or where they
go while they’re in the air.


So, with more wind farms being built across the country, it’s not clear what affect they
might have on bird populations, but some suspect it won’t be good. Peter Kailing works
with an environmental consulting company. He recently did an environmental impact
study for a new 47 hundred acre commercial wind farm in Michigan. He says scientists
can learn a lot from the wind farms that have already been built. He says the ones that
have done the most damage to wildlife have a few things in common:


“The turbine was in a narrow valley, or a mountain-pass, or on the edge of a large
water body with steep wooded cover that was used by migrating songbirds, there’s almost
always a topographical association.”


Weather also plays a role. Peter Kailing and others say that birds tend to avoid cloud
banks by flying under them. That could put them in the path of turbine blades. So, one
way to limit damage would be to shut the turbines down on cloudy days.


Chandler Robbins says better technology could also limit damage. He says turbine blades
could be equipped with sensors:


“If a bird or a bat collided with that blade, it would set up enough vibration so that the
blade could be feathered temporarily to avoid other birds striking until the immediate
problem is over.”


Feathering essentially means that you twist the angle of the blade so that wind passes
over it, rather than pushing the blade into a spin. That way, birds aren’t sucked into it.
It’s basically the turbine’s braking system. Some say you don’t even need a sensor on the
turbine. They say engineers could monitor radar and thermal imaging. That would tell
them if any migrating birds are in the area, and if they are, feather the blades.


Of course, the absolute safest solution in the short term might be just to stop building
wind farms, but you’d be hard-pressed to find anyone who thinks that’s a good idea.
Most seem to realize that any way of making electricity will have some impact on the
environment. The question is what can be done with each of them to minimize the risk.
With wind energy, that work is just getting started.


For the GLRC, I’m Dustin Dwyer.

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Dry Urinals Aim to Save Water

  • "Look! No handle." Jim Fashbaugh shows off one of the waterless urinals Michigan State University is installing in new buildings. It uses no water. (Photo by Lester Graham)

There’s a change happening in certain restrooms across the country. With growing concerns about wasting water, companies have been looking at ways to use less water to flush… and now a new product uses no water at all. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

There’s a change happening in certain restrooms across the country. With growing concerns about wasting water, companies have been looking at ways to use less water to flush… and now a new product uses no water at all. The Great Lakes Radio Consortium’s Lester Graham reports:


Alright… this is a story for the guys. I mean, you women might be interested, but this is really a guy thing. They’re taking the flush away from us. You’ve probably noticed that urinals have been changing from manual flush to some kind of automatic or motion-detecting sensor flush. Now a few companies are producing urinals with no handle, no button, no sensor. Companies such as Sloan Valve Company, Waterless Company and Falcon Waterfree Technologies are making urinals without flushers.


Bruce Fleisher is the Vice President of Sales and Marketing for Falcon Waterfree Technologies.


Fleisher: “Literally there is zero water consumption with the use of this urinal product.”


Graham: “Well how do you flush it?”


Fleisher: “Well, in fact, it’s the no-flush urinal.”


No flush. No water. The urine just goes down the drain, past a sealant and it’s trapped there. All the no-water urinal companies use similar technology.


“Because it’s a dry surface, that prevents the urine from breeding bacteria rather quickly. And, as a result, you have no odor.”


Hold it. What did he just say?


(sound of rewinding tape)


“And, as a result, you have no odor.”


Now, I couldn’t let that one go… so I asked Mr. Fleisher to explain how that works.


“The odor that people would typically experience in a urinal derives from the combination of the urine and the water creating a breeding ground for bacteria. Bacteria then generates ammonia gas. Ammonia gas is what most people are picking up. That’s what smells.”


I remember from some high school science class that urine, when it’s expelled, is sterile. So, it kinda makes sense. But hey, this guy’s in charge of sales. So I called up a nephrologist. Nephrologists study kidneys so they know something about urine. Dr. Akinolu Ojo is the director of nephrology outpatient services at the University of Michigan. He explained why urine smells.


Ojo: “The odor that one gets from the urine comes from exposure to atmospheric air and water moisture. As that happens there is decomposition of some of the compounds in the urine. One of the by-products is ammonia. And so you get at that point an ammonia smell.”


Graham: “So, this mixture with water, it becomes a better breeding ground for bacteria?”


Ojo: “That’s correct.”


Graham: “And then the chemical reaction in addition to that also could cause some odor?”


Ojo: “You are correct.”


Glad we got that cleared up. In fact, when I went to see the Assistant Manager of the Physical Plant and Maintenance Services at Michigan State Univesity, Jim Fashbaugh said an odor problem with flush urinals is what prompted that univeristy’s first experiment with no-flush urinals.


“We’d heard about the waterless urinals. We thought we’d give them a chance to see how they would work. And we installed it and it took care of the odor problem, but we also realized we were saving water at that point, so we thought we’d take a look at other applications.”


So, they had one installed in the bathroom in the building where the top maintenance guys work.


(sound of men’s room door opening)


We took a peek at it.


Fashbaugh: “It’s one of the first ones that we ended up trying out. That’s basically it.”


Graham: “It looks like it’s broken, like there’s-”


(sound of laughing)


Fashbaugh: “Yeah. As you see, there’s no flush valve. There’s no- anything else happning. It just goes down through the ports there and there’s a blue liquid that allows the urine to go through and it separates it out. Frankly, we have hard water here at MSU; we’ve got those deep water wells. And it eliminates that lime buildup and whatever that we had to clean up before. So it saves us on products to have to do that issue too.”


Fashbaugh says the janitors love them. Instead of disinfectant, water and a lot of scrubbing, it’s more of a spray and wipe procedure. The no-flush, no-water urinals have been around in Europe for a long time, and they became popular in the drier areas of the American Southwest a few years ago. Now, universities, stadiums, and airports among others all across the country are installing them.


Guys… it could be that this sound…


(sound of flushing)


…might soon be flushed down the drain of water-wasting history.


For the Great Lakes Radio Consortium, this is Lester Graham


(sound of restroom door opening)


Fashbaugh: “Do a lot of interviews in restrooms?”


Graham: “Uh, not – I think that might be a first for me.”


Fashbaugh: “Yeah, really. I was glad we didn’t have to do a demonstration.”


(sound of laughing)

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