Published on July 30th, 2008
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Another win for LED bulbs: Anchorage, Alaska plans to replace 16,000 streetlight fixtures—a quarter of all the streetlight fixtures in the city—with LEDs. The new streetlights will use 50% less energy than current fixtures, leading Anchorage to potential savings of $360,000 each year. The city has invested $2.2 million in the plan.
Since Anchorage has 85 days a year with less than 8 hours of sunlight, energy efficiency initiatives are critical to the city’s survival. With other programs currently in the works, they’re on the right track.
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Published on July 25th, 2008
Sometimes it takes an energy crisis to make us realize the value of old technology. As oil prices soar, tall wind-powered ships are looking like an increasingly viable alternative.
The first commercial cargo of French wine to be transported by sailboat in the modern era is due to arrive in Dublin this week after a six-day trip. The 108 year-old boat, chartered by French shipping company Compagnie de Transport Maritime a la Voile (CMTV), is carrying 30,000 bottles of wine.
Though the ship travels at a top speed of eight knots— half the speed of a modern cargo vessel—it is completely pollution-free. The 50,000 other merchant ships traveling the world emit 800 million tons of carbon dioxide each year. Read the rest of this entry »
Published on July 25th, 2008
Great news on the power efficiency front: Scientists have invented a new material that can efficiently convert heat waste in cars, power generators, and heat pumps into electricity. The new material is thermoelectric, and can turn heat into energy without any pollution.
The invention, thallium-doped lead telluride, is twice as efficient as the second most efficient material used in thermoelectric power. The lead telluride creates electric power like a conventional heat engine coupled to an electric generator, but uses electrons as the working fluid instead of water or gas. Additionally, it creates electricity directly.
Most importantly, the material is most effective between 450 and 950° Fahrenheit. This is a typical temperature range for many power systems, including car engines. Read the rest of this entry »
Published on July 22nd, 2008
30 steps to a more sustainable you!
7-22-2008. A quarter of a year has gone by since I posted my Earth Day blog offering 22 suggestions to change your lifestyle
Have you made any changes in the last 3 months?
I’ll trust that you have, and in case you’ve done so well that you’ve incorporated ALL 22 suggestions into your daily routine, I have added 8 more in this post (following the original 22) to make it an even 30.
After going through the list please use the comments section to add to my list and/or to explain why you’ve done so well (or poorly) in the last 3 months.
From Earth Day post:
1. Buy a rain barrel. You can’t drink the collected water, but you can water your lawn and wash your car with it. You’ll save thousands of gallons per year in the process!
2. Turn off your TV!!! At least limit your TV watching!
3. Drive less. Walk, bike, skip, skate, and stroll, more. This way you can get some fresh air while running an errand, and you’ll feel (and look) better in the long run.
4. Use natural fertilizers on your lawn and garden. Harsh chemicals found in conventional fertilizers are bad for your lawn and all who play on it. Also, it harms our groundwater supply.
5. Replace old bulbs with CFL’s and/or LED’s.
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Published on July 17th, 2008
Earlier today, I had the opportunity to visit Intersolar US, the United States’ premier exhibition for solar technology. I learned about a variety of products that are revolutionizing the solar industry, and one of the most interesting was Paradigma’s AquaSystem.
The Aqua solar heating system, first introduced in 2004, works like an additional boiler with a selectable temperature. It is the only solar heating product on the market that can be connected to an existing heating system without any modification. Additionally, the AquaSystem does not require frost protection agents in the winter, as it is protected with warm water if temperatures drop below a certain level.
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Published on July 8th, 2008
To wrap up my ode to John Henry (and a more sustainable lifestyle) I am going to cover a few more everyday household plug-ins by giving the current ON the grid offering, it’s OFF the grid alternative, and weigh in on whether a switch is warranted.
ON
The Fridge: We all know what it does and why we use it–so what are the OFF the grid alternatives?
OFF
The Fridge: William “The Refrigerator” Perry, former defensive lineman for my beloved 1985 Super Bowl Champion Chicago Bears. You could try contacting him to see if he’ll deliver fresh food to your door on a daily basis. I understand he’s not very busy these days.
OFF
Jarring and canning fruits and vegetables to preserve for the winter months may save some space in the fridge, but cannot replace the fridge altogether.
SWITCH?
Realistically, it’s not likely. However, the size of refrigerators in this country is insane. My parents have an enormous fridge and regularly come across 3 year old cheeses and meats that get lost under piles of their newer/fresher replacements. In lieu of a switch to William Perry (we can’t all use him–it’s simply unrealistic) we can buy a smaller, energy efficient fridge, fill it with less food (eat fresher food), and keep the door open for very short intervals (know what you’re getting before you open it). A few generations back, families typically had more members yet much smaller fridges, so it can be done–and you’ll benefit from fresher fare.
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Published on July 3rd, 2008
There is some excitement in the nuclear focused blog world about “The World’s First Commercial High Temperature Nuclear Reactor” based partly on a recent article in Power Engineering by Jana Miller titled “Powering Up A Growing Nation”. This project in Shandong Province will be a unique plant whose reactor heat source is two containers full of spherical fuel elements, each one of which is about the size of a billiard ball.
I am a bit reluctant to call this plant a “first”, but I can get just as excited about the third, 10th or 100th plant in a progressive series of improved plants that should number 1000 reactors or more.
The plant, designated as HTR-PM, will be a 200 MWe pebble bed reactor heated steam plant with two reactors, each with a single steam generator (boiler) feeding a single turbine. The plant will be built in Rongchen City on a site large enough to host series of perhaps 10-12 similar plants. In that area of China, there are hundreds of older coal fired power plants generating 50-300 MWe each.
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Published on June 17th, 2008
It started with a long discussion betweeen my wife and me. We each thought it’d be fun to get a scooter, but worried that, for us–a 1 car, 2 bike family–we would actually be doing more environmental damage by getting a scooter. Meaning, unlike many who get a scooter to use instead of their car (wise choice), we’d end up using our scooter instead of our bikes (un-wise choice). Being our primary mode of transport, the bikes would likely fall victim to the newer, sexier, faster scooter.
This got me on the thought process that I wished more people would first give a bike a try for their short trips, instead of viewing the scooter as their only alternative to combat gas prices. Of course it’s more work–but more work can be more rewarding. Which got me to thinking that there are plenty of tools that have traded elbow grease for electricity–yet we have benefitted little. Which turned me on to this mini-series…
Just as John Henry fought the steam hammer to show that human power cannot be undone by the industrial revolution. I am hoping to open a few eyes to the alternatives that are possible when we replace one of our everyday machines with the same machine sans motor/electricity/etc.
In the interest of full disclosure John Henry did beat the steam hammer but he also dropped dead in the process.
That said, I will be realistic with my comparisons–I don’t want anybody to drop dead of exhaustion. I’m sure I’ll find, in some cases, the modern invention to be more beneficial to the manual powered version it replaced.
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Published on June 16th, 2008
Not exactly washing without water, but with less than 2% of a normal washing machine. That’s only 1 cup of water for those sweaty gym clothes, grubby kid-wear, and foul socks.
Washing with soap and water has been THE WAY to clean most clothes for so long, it’s hard to imagine reducing H2O by 98%. What this technology lacks in sexy bells and whistles, it gains in implications. Billions of gallons of clean water could be conserved every year simply by adopting this dry cleaning technology. Less water also means less drying, which can add energy savings to those with energy-hungry clothes dryers. Read the rest of this entry »
Published on May 26th, 2008
Picture a kelp bed on the ocean floor swaying in the current.
Done?
Now picture an underwater field of bioWave turbines (pictured to your left) doing the same. But, unlike the kelp, supplying one half megawatt of electricity. (In kelp’s defense, it does provide oxygen, food, and a place for the elusive leafy sea dragon to hide.) Using habitat inspired and environmentally friendly design (biomimicry) the team at BioPower Systems have designed, and are now testing, the bioWAVE and bioSTREAM devices. Devices that sway in tune with the oceans currents while producing clean, renewable energy. The Australian company has also focused in minimizing the environmental impact of each device as not to upset the ocean’s many delicate ecosystems. Or, as their website puts it:
These systems will reside beneath the ocean surface, out of view, and in harmony with the living creatures that inspired their design.
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