Archive for the ‘Alternative Fuels’ Category

Eco-Effective Design: Convenient City Car-Sharing Concept by MIT Media Lab

MIT stackable carImagine what cart corals at the supermarket would look like if shopping carts didn’t nest together. Imagine what the entryway of the supermarket would look like if shopping baskets didn’t stack. This would be poor spatial planning on the designers part. Next, image what a parking lot could look like if our cars stacked? We all of the sudden will have a plethora of open space, hmmm why didn’t we think of this earlier?

The first innovative step towards stacking cars was the parking structure, where layers of cars could be stacked upon each other. The next innovative step is to actually stack cars up against each other to reduce the absurd amount of space we require for vehicular parking. The concept is a hybrid of car sharing systems, spatial planning, alternative fueling systems, and personal convenience.

folding-mechanism.jpgDeveloped by MIT Media Lab students from the Concept Car Design Workshop sponsored by GM, the key behind this concept is the redesign of the wheel and axel. Rather than having a rigid axel, it will actually fold in a way that will allow the car to rotate upwards 90 degrees. In this, the long dimension of the vehicle is perpendicular to the ground while parked. Since each car has the same form and design, they perfectly nest together to reduce surface space consumption. The stackable car will be able to reduce required curbside parking space by about a third to a half. This allows for more sidewalk space, biking lanes, and comfortable city conditions.

stackable-charging.jpgDue to the small dimensions, the stacks of cars will be conveniently placed in locations all over the city- where you would normally come out of a building and hail a cab; you can jump in an electric city car and advance to your next desired location. The concept City Car system includes solar paneling on the rooftops of buildings adjacent to the stackable parking depositories. These panels will be the power supply to charge the electric cars while parked.

This car-sharing concept is a solution to the missing link between public transportation and the front door. Often people don’t use public transit due to the time necessary to switch from the subway to the bus to the next bus. Now people can commute into the city, get off the train, jump in a city car, and drive that extra three to ten miles to the office. This is a reasonable solution to a very prevalent problem. Instead of unnecessarily consuming a parking space while in the office all day long, you can use a city car in the morning and evening, while others use it all afternoon; and the convenience of hopping in a city car is what will make this work. In addition, since these cars aren’t personal vehicles and people will be in them on an average of five to thirty minutes, hopefully the new system will encourage people to share rides across town thus influencing our sense of community, status, and ownership.

Eco-Effective Innovation: Sugar Technology and the Sony Bio-Battery

Who ever thought that asking your neighbor for sugar could carry more connotations than that of baking necessities? Well, Sony is working on a product that will make your neighbor think twice about your consumptive demands.

Sony recently announced their current activity in developing a new bio-battery. The battery generates electricity from carbohydrates (currently sugar) and utilizes enzymes as the catalyst. The sample battery has proven to be able to output 50 mW, or enough to power a portable mp3 player. This is the world’s highest yet for a passive-type bio battery.

According to the Sony Press Release:

Sony developed a system of breaking down sugar to generate electricity that involves efficiently immobilizing enzymes and the mediator (electronic conduction materials) while retaining the activity of the enzymes at the anode. Sony also developed a new cathode structure which efficiently supplies oxygen to the electrode while ensuring that the appropriate water content is maintained. Optimizing the electrolyte for these two technologies has enabled these power output levels to be reached.

The newly developed bio battery incorporates an anode consisting of sugar-digesting enzymes and mediator, and a cathode comprising oxygen-reducing enzymes and mediator, either side of a cellophane separator. The anode extracts electrons and hydrogen ions from the sugar (glucose) through enzymatic oxidation as follows:
Glucose -> Gluconolactone + 2 H+ + 2 e-
The hydrogen ion migrates to the cathode through the separator. Once at the cathode, the hydrogen ions and electrons absorb oxygen from the air to produce water:
(1/2) O2 + 2 H+ + 2 e- -> H2O
Through this process of electrochemical reaction, the electrons pass through the outer circuit to generate electricity.


Since the battery does not require the user to do any mixing or formulating, the process is quite simple and it requires very little of the owner. But, each cm2 can only produce 1.5 mW in the first minute, so the battery has to be quite large. The current dimensions are 39×39x39mm- I don’t know how portable and functional it makes this object, but it is a step in an interesting direction.

The most applicable situation I see for this technology is for remote electrical generation necessities (which puts an interesting spin on neighborly sugar supply). For locations or trips that could not benefit from portable solar panels, sugar is a new alternative. As the design progresses and the technology is tuned, I am sure they will be able to come up with something on a more practical and portable scale.

Again, the question arises about genetically modified sugar due to increased demand of the material. Will we begin manufacturing it in the lab and what will this do to the sugar farmers across the world? These questions are always something to consider with the development of any technology using a finite, consumable resource.

It is although fun to imagine one day giving your cell phone a shot of liquid sugar when it starts beeping with low battery indication… Instead of cords, we will have IVs of liquid sugar lying about our apartment floor with a portal into our computer, our radio, our coffee maker…interesting.

Eco-Effective Decisions: Eco/Green Labels Galore (Part 1)

Gaining green credentials is of utmost importance to those in the consumer electronics industry. As the demand rises, each company is developing their own labeling system to tote their own personalized green flag. But with so many sets of criteria how do we evaluate the concentration of the green credentials solution?

Philips Electronics recently announced a new consumer product label that will mark simply that the electronic is more environmentally friendly and healthier for the consumer. Titled the “Green Tick”, this label will aid Philips consumers in making decisions about competitive products. Included in the eco-friendly evaluation, the products must meet certain energy efficiency requirements, and use healthier, more environmentally gentle materials in everything from production of the electronics to the packaging. The motivation is to enlighten consumer awareness and to differentiate Phillips products from others. Awarded by external auditors, Green Tick products will be added to the list of Green Flagship products.

It is now becoming easier for Phillips consumers to actively make eco-conscious choices about different products within the company portfolio, but it stops there. The missing link right now is that there is not a tool to leverage the criteria of the Green Tick against that of say Energy Star. When the Green Tick only applies to Phillips products, it becomes difficult for the consumer to make educated decisions about competitive products- how do choose between a “Green Tick” labeled HD TV and an “Energy Star’ rated HD TV? On a seemingly similar note, Sharp
just received an eco-friendly label for their TV’s as well. Boasting
40 EU eco-label awards and additional international energy-efficiency
awards, Sharp was able to achieve so many pillars or environmental wealth because they chose a more common label for
their products- the EU Flower. When the criteria and motivation for these labels are essentially the
same, why compete within the market with private eco-label branding? It is hard to say, but the next step is to get educated and look for labels that are applied to more consumer markets.

Some good news is that many recent European discussions between manufacturers and PR departments have concluded in agreeing to promote green-labeled products and educate with more extensive media coverage throughout the remainder of this year. Hopefully this will result in consumer demand for consistency, and thus an understanding of eco-label activity.

More good news on the horizon is a new widespread European Union Eco-label, the Flower. Taken from the EUROPA Eco-label homepage:

"It is a voluntary scheme designed to encourage businesses to market products and services that are kinder to the environment and for European consumers - including public and private purchasers - to easily identify them. You can find the Flower throughout the European Union as well as in Norway, Liechtenstein and Iceland. The European Eco-label is part of a broader strategy aimed at promoting sustainable consumption and production."

Everything from tourism to detergents, business owners and companies can now compete within the green market. With this tool, green attributes pertaining to these private companies, businesses, and practices…may be more easily compared by consumers.

Eco-Effective Decisions: Live in the First Cradle-to-Cradle Apartment Development: Greenbridge

William McDonough and Partners is teaming up this year with a list of other local and international architecture, engineering, and design firms to form Greenbridge Developments LLC, a new company focused on implementing and designing sustainable mixed-use development. The group was actually founded in 2006 by six local families with strong connections in the area whom were all influenced by sustainable development. This years first project will be in the defined “opportunity zone” of Chapel Hill, North Carolina. The two-tower construction will achieve LEED Gold Certification, and serve as a national model of sustainable design and green building.

The initial plans for this retail/office/housing complex include two nine-story buildings that will be connected by a pedestrian bridge, rooftop gardens, solar panels, wheatgrass countertops, a Zipcar fleet, and a sustainable educational learning center. The developers will encourage fair-trade businesses to open shop on the ground floor’s designated retail space.

Based on the declared premise that “all sustainability is local”, the new development seeks to meet the goals of environmental sensitivity, social equity, and economic vitality. The possibility of influencing local economys and social environments through large-scale projects such as housing developments is, and always has been, present. Yet when sustainability can be the underlining theme and motivation, the project will undoubtedly have a positive “smart growth” influence. Instead of consuming new land, “green development” Greenbridge Developments LLC seeks to revitalize urban and civic centers though considering the impact of each decision made in the design process.

The most interesting aspect of this project is that, in addition to expecting LEED Gold certification, the project is largely influenced by the “Cradle-to-Cradle” design paradigm articulated in the 2002 book by William McDonough (whose architecture firm headlines the project) and Michael Braungart.

“Contrary to the cradle-to-grave patterns that make, take, and waste- cradle-to-cradle harnesses the earth’s interdependent systems to nourish one process with the ‘waste’ from another, and rely on an eternally renewing flow of resources.”

The duo now runs a practice (MBDC: McDonough Braungart Design Chemistry) in Charlottesville, Virginia that awards cradle-to-cradle certification to materials and products, and consults with businesses on strategies. Simultaneously, McDonough runs his own architecture practice focused on superior sustainable quality. With his experience alone, I would trust that any building he works on would be of the greatest, smartest eco-effective quality.

By utilizing available technology in the most complex and collaborative way, Greenbridge Developments could potentially be a nationwide and worldwide model of sustainable development, economic and urban revitalization, and progressive green design.

Eco-Effective Decisions: More Incentives = Better Energy

Kiss & Cathcart, 2020 towerKiss & Cathcart, 2020 towerIsn’t it the best thing in the world when you find out that making a decision about your lifestyle is not only the environmentally-friendly decision, but the economical one too?!!! It makes me want to run through the streets with my arms flailing, telling the world that we are going to be ok. Blue collar, green collar, white collar, red collar… we can all save a bit of money by taking a healthy and responsible action for future generations.

Increasingly, homeowners and businesses are getting bank loans and even grants to install solar and wind power systems on the site of their property. The Database of State Incentives for Renewables and Efficiency is a great place for homeowners to start. It is common to now receive an incentive to reduce the cost of these systems from 25 to 40%, depending on location, of course. The state of Oregon now has 50% Business Energy Tax Credit for all renewable project costs. Not only does this incentive make alternative, local power generation an affordable option, but in provides individuals, families, and groups with the possibility of claiming energy independence from the electric grid.

Following is a supreme example of how the business management of renewable energy systems is gaining strength and incentives. The largest investment bank in the U.S., Morgan Stanley, will finance and own the PV systems that are to be installed atop 7 Wal-Mart stores in California. The way this works is that Morgan Stanley signs on as a financing partner of SunPower, the supplier, designer, installer, and maintenance supplier of the systems. Morgan Stanley pays for the system up front and the customer pays for it over a long period of time, as opposed to 100% up front. This means low investment risk and instant availability. Big business is seeing green in dollars returned by investing in alternative energy that makes good business sense to them. Not only is it just good business because it looks good and tops their environmental checklist, but it’s economical. Tiffany’s, for example is expecting a $500,000 annual savings on the 1.3 megawatt solar installation divided between 2 distribution centers in New Jersey.

I am not writing to debate the politics of appreciating solar value, market value due to commercial demand, and increasing utility prices; I’d just simply like you to appreciate that there is a greater demand. According to Solar Buzz, “Over the last 20 years the cost of solar energy systems has come down seven fold…” According to The Economist, “Global investment in renewable power-generation, biofuels and low-carbon technologies rose from $28 billion in 2004 to $72 billion in 2006.” If you think about it fundamentally, it makes sense that there be more value at a cheaper cost to us in something that is renewable. These businesses are not signing the Declaration of Energy Independence (yet), but they are partially acting on the economical incentive present. Even though designing these stores and warehouses to maximize on natural light might be the most energy efficient option, investing in solar to power the devices within this space has to be applauded.

Eco-Effective Decisions: Lean, Green, Tiny Cleaning Machines Naturally Remediate our Waterways

image courtesy of Green MuseumDevils Lake installation: image courtesy of Green Museum

There is a little family of asexual plants commonly known as duckweed, and otherwise known in the botanical world as lemnaceae. These smallest flowering plants are lean, lime-green, clean, eating machines. Lemna is the most common of this family, and has quite a profound impact for its size. Each plant has one paper thin leaf the size of the tip of an eraser. They thrive in freshwater lakes, streams, and ponds high in nitrogen, ammonias, and phosphorus. As they feed on these “excess nutrients” the tiny plants help remediate the water on which they live atop.

Though these lime-green plants are tiny, there is no need to call them fragile. They can grow in full sunshine or dense shade, and they endure a challenging range of ph levels. They hibernate during the cold months at the bottom of their watershed and, come May, the plant “springs” up and gets to work cleaning its ecosystem. This tiny plant has been known to cover bodies the size of football fields in just a couple months. It goes unsaid that these tiny soldiers are friend and not foe when it comes to water remediation.

When artist and engineer Viet Ngo established a company back in 1983 called Lemna International that applauds and utilizes the capabilities of these mini soldiers, we weren’t surprised. Ngo, a first-generation Vietnamese immigrant, and his colleagues got a little fame when they designed a carefully engineered art installation in 1990 on Devils Lake, ND. Funded by the EPA, they designed and implemented the beautiful 50 acre, 9 channel, intestine-like system that extracted all detrimental phosphorus, nitrogen, and algae from the wetland before the water reached a bay of Devils Lake. This $50 million project encouraged the group of designers, artists, and engineers to combine the profoundly simple yet complex water remediation technology with other environmental infrastructure problems to clean up the earth. Over 25 years later, the company is managing its success with innovation, consciousness, and integrity.

Lemna International designs environmentally responsible and economical wastewater treatment technologies that naturally clean our polluted waterways. They design for everything form dams to freshwater remediation to drinking water treatment plants, pipelines, and distribution systems. Based in Minneapolis, MN the company has designed and implemented over 300 projects in 16 countries.

The company does not stop at only providing us with clean water. They make sure our water stays clean by removing any harmful waste and either safely putting it in landfills built to international standards, or incinerating it to generate electricity and heat in facilities equipped with air pollution control systems. Their impressive profile of clients ranges from industrial food manufacturers and tire plants to hospitals. They additionally serve a number of cities worldwide.

As the company gained momentum with their patented water remediation technology, they have branched out into additional sectors of environmental infrastructure including transportation, alternative energy, and general infrastructure. Like the lean, lime-green, clean, machines that duckweed are, Lemna International is actively seeking to fix any environmental problem a private or public client might have with an ingenious and unique solution!

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