Archive for April, 2008

For a Greener Tomorrow…

Tuesday, April 29th, 2008

What do you do to promote a greener tomorrow?

I recycle as much as possible, compost what I can, use fluorescent light bulbs, consume less water, use my motorcycle, bicycle, public transportation or walk as much as possible, buy local food and talk about what can be done with friends and family.
Jamie Hannon, Supplier Development Engineer

For my 12.5 mile commute to work, I bicycle, run, carpool and have a desire to unicycle. I drive a diesel car that gets 40-45 mpg, I heat my house with wood, eat as much locally grown food as possible, compost all organic waste and of course: recycle, recycle, recycle! I also take my family on a lot of outdoor adventures so we appreciate what we are trying to conserve: hiking, camping, beaching, surfing and swimming.
Christian Stanley, Lead Process Engineer

Shhhh…The Earth May be Trying to Tell us Something

Monday, April 28th, 2008

By Bill Mitchell, Vice President, Sales and Marketing
Nuvera Fuel Cells

It all started out innocently enough; an email from a friend who wanted to get a few entrepreneurs in the cleantech market space together for a little dinner, a couple of beers, and end the evening off by a trip to “a very cool scientific art studio”.

Dinner was good and the beer better, but things really got interesting once we got to the studio. As it turns out, the “very cool scientific art studio” was the creation of a scientist turned artist by the name of John Bullitt. He graduated in 1980 with a degree in physics from Grinnell College, where he built the college’s first seismograph. After receiving an MA in geophysics from the University of California at Berkeley in 1982, he joined the research staff at the Massachusetts Institute of Technology, where he continued postgraduate studies in geophysics and conducted basic and applied research into the nature of seismic wave propagation in the Earth’s interior.

John Bullitt

Using his scientific background, John aggregated seismic data collected from listening posts around world and over many decades. He then synchronized the data, speeds it up and plays these now-audible “Earth Sounds” on a 3 dimensional sound stage, which he calls the Deep Earth Dome. The seating area is surrounded by speakers, placing the audience at a simulated center of the earth. It is a truly unique experience – combining earth science with art.

Click here for a Boston Globe article on Bullitt’s work, and here for a sample of what the earth dome sounds like (only in stereo, so you will not get the spatial sensation of sitting in the center of the earth). In the recording, time has been compressed 10,000-fold; the entire 3-minute recording spans 3 weeks of real Earth time. You will hear earthquakes that now sound metallic and hollow, which is an effect of the waves bouncing around the inside of the planet. In other recordings, you could clearly hear ocean storms (which sounded like white noise) moving around the earth.

After we got over the initial shock and awe of what we were listening to, we started to have a discussion with John to understand how long these recordings have been taking place, and whether or not anyone has tried to use them as a way to “visualize” the effect of global warming on the increase of seismic activity or on the number and intensity of ocean storms. Although there has been no effort on this to date, John admitted it might be interesting to look into.

As the discussion and listening continued thorough the evening, I was struck by the sense of how alive the planet is, and that we are affecting it thought our pollution. If you listen carefully in John’s recordings, you can hear the sounds of the tides moving - it sounds like the earth breathing. Hopefully, we can keep the environment and the earth healthy so that it continues to breathe for many future generations to come.

Water vs. Glycol, the Best Coolant for the Job

Friday, April 25th, 2008

By Danielle Andre and contributing editors
Scott Blanchet, Platform Leader, Fuel Cell Development and
Amedeo Conti, Lead Engineer, Stack Design

Test bench for glycol coolant usage in a fuel cell

As I was sitting in the monthly review of our Fuel Cell Stack Development team, a topic caught my ear. While the majority of information parlayed in this particular meeting falls under the category of intellectual property and therefore cannot be posted here (as you can imagine), there is some interesting work being done in regards to coolant that is fit to share.

Fuel cells create electricity through an electrochemical reaction between hydrogen on the anode side and oxygen on the cathode side. During the reaction heat is produced and a liquid coolant is required to control temperature. Managing the electrical conductivity of the fluids within the cell is extremely important in order to avoid current leakage and short circuiting. Deionized water typically has low electrical conductivity, making it an effective coolant for fuel cell stacks; the obvious downside to using water is that it freezes at typical winter temperatures. This is a sizable hurdle for fuel cells that are aimed at the automotive market.

Traditional (internal combustion engine) automotive systems are cooled with ethylene or propylene glycol, for just this reason. Glycol has a significantly lower freeze point than water, which is what allows our cars to start on those cold New England mornings. The issue with glycol is that it can have a high electrical conductivity rating, resulting in excessive corrosion within the fuel cell stack.

Nuvera has taken a serious look at the tradeoffs in the water vs. glycol debate: water is a low cost and effective solution, but is tricky when dealing with cold start applications. Glycol is only effective when used in conjunction with a deionizing filter which adds cost, but may help enable achievement of the holy grail in fuel cells – a timely cold start.
The glycol debate is nothing new inside Nuvera – our automotive stack, Andromeda™, is designed to be compatible with glycol, utilizing standard automotive parts. What we are determining now is the best glycol/water solution to produce the results we want, how to optimize our systems to run on glycol, and verifying the robustness of our systems when run on this glycol based coolant. If our findings resolutely show that glycol is the preferred coolant, you may see it in not only in our automotive products, but also in our PowerFlow™ system, maximizing performance in the forklift cold storage market.

Report from the Hannover Fair

Wednesday, April 23rd, 2008

Charlie Myers is currently in Hannover, Germany, attending the annual Hannover Fair.

hannover fair hoppecke with nuvera

His participation in the Fair is in support of Hoppecke, a German based forklift battery manufacturer that has integrated our PowerFlow fuel cell system into a battery tray to make a hybrid fuel cell battery pack for forklift trucks. Hoppecke is exhibiting as part of the North Rhine Westphalia booth, which showcases the German region’s varied “future energy” activities, including Hoppecke’s hybrid fuel cell battery pack.

NRW and Hoppecke booth at the Hannover Fair

Charlie sends the following comment on the picture above:

How to keep busy at a show and still feel at home. Yesterday’s food in the NRW booth was based on an American theme (check out the hot dogs!) and so were the decorations.”

For a Greener Tomorrow…

Tuesday, April 22nd, 2008

In honor of Earth Day, we are launching a section on the blog titled “For a Greener Tomorrow.”

Nuvera Employees will answer this question:
What do you do to promote a greener tomorrow?

I’ve reduced my driving speed from 80 to 70 mph-increasing my mpg by 10%. The side benefit is that my stress level has gone way down!
Tom Holmes, Head of Customer Care

I share magazine subscriptions with colleagues, rather than getting my own.
Gus Block, Director of Marketing

I have been increasing my awareness of green options and adding them to my usual routine. These include always purchasing Energy Star rated appliances, using high efficiency lightbulbs, recycling more paperboard in addition to newspapers and bottles and cans.
Brian Nowicki, Senior Mechanical Engineer

I purposely drive a compact car and use a performance air filter to increase fuel economy. I try to drive in the slow lane and use my brakes as little as possible while accelerating as efficiently as possible. Doing this, I’ve gotten upwards of 36 mpg on a regular basis.
Jim Fowler, Labview Software Engineer

Now’s your chance, tell us here what you do to promote a greener tomorrow!