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Landon Hall

Americans used to ride cheap trolleys. Then we burned them

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One of the many fascinating storylines in the documentary PUMP (which is now available for download on iTunes) is the yarn about how several companies got together to take on a common enemy: popular, affordable electric trains and trolleys that criss-crossed the nation early in the 20th century. That’s a very different country than we live in today, when the automobile is as ingrained in our culture and economy as ever. As former Shell Oil president John Hofmeister puts it in the film:

“We live in a society in which we rely on personal mobility as the primary means of transportation. And there’s no public transportation system to rely upon in the United States of America as an alternative to high prices or shortages.”

Narrator Jason Bateman follows up:

“America wasn’t always without transportation choices. Once upon a time, we had the best and cheapest public transportation in the world.”

Bateman then gives way to an expert on this subject, Edwin Black, whose book Internal Combustion details the effort to target the trolleys. Black explains in PUMP:

“People loved the trolleys. They could hop off, they could hop on … all the trolleys ran on electricity. It was said that you could go from San Diego to New York City on a trolley just by transferring, transferring and transferring.”

In the 1930s and ’40s, five companies — Standard Oil, Mack Truck, Firestone, Phillips and General Motors — colluded to create a secret company that bought up all the trolley lines and passenger cars.

“… the rails were pulled up, the trolley cars themselves were burned in public bonfires [as seen in the photo above], and they replaced them with smelly, oil-consuming motor buses. Eventually, the federal government discovered that this was a conspiracy to subvert mass transit. All five corporations were indicted, they were tried, they were found guilty. A corporate conspiracy was responsible for destroying the trolleys in America.”

The reckoning was a little late, however. Back to Bateman:

“With cheap public electric transportation eliminated by oil and car companies, the vision of America’s future switched from rails to roads.”

That led to the interstate highway system, which only intensified our love affair with the automobile. A relationship that relies, essentially, on just one fuel type: gasoline. Of course, many of today’s municipal bus fleets run on compressed natural gas (CNG) or liquefied natural gas (LNG). And rail projects are often on the minds of planners. But getting away from gas-burning transport has been a difficult road, as anyone following the fight over California’s $68 billion high-speed rail project knows. To get a sense of how the story of oil’s dominance came to, and to see what you can do to end our addiction to it, watch PUMP. (Photo credit: Submarine Deluxe)

Arctic Leaf

Can supercapacitors replace batteries?

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The electric car depends on batteries, and before EVs become a large chunk of our automotive fleet, there are probably going to be some changes.

Right now, Elon Musk is betting he can produce millions of small lithium-ion batteries not much bigger than the ones you put in your flashlight and string them together to power a $35,000 Tesla Model E over a range of 200 miles at speeds of up to 70-80 mph. The Model E also will also need an infrastructure of roadside “filling stations” and home chargers, although the best superchargers still take more than 20 minutes to achieve 80 percent capacity.

But there is another way to store electricity, long familiar to the designers of electrical circuits. It’s the capacitor, a device that stores a small current by static electricity rather than a chemical reaction. Capacitors sit in all of your electrical devices, from radio circuits to the most sophisticated laptops, and are essential to providing the steady electric current needed to run such electronics. But what if the concept of capacitors could be scaled up to the point where they could help power something as big as an electric vehicle? Granted, it’s a long, long way from the 1.5-volt capacitor in your iPad and powering a 4,500-pound Tesla along the Interstate, but researchers are out there probing and are already thinking in terms of a breakthrough.

Right now there’s a huge separation between the things that batteries can do and the things that capacitors can do. In a way they are complementary — the strengths of one are the weaknesses of the other. But researchers are working toward a convergence — or perhaps just a way of using them in tandem.

A battery employs chemistry by splitting ions in the electrolyte so that the negative ones gather on the cathode and the positive on the anode, building up a voltage potential. When they are connected externally an electric current flows. Batteries have a lot of energy density. They can store electricity up into the megawatt range and release a flow of electricity over long periods of time. The process can also be reversed, but, because the reaction is (once again) chemical, it can take a long time.

Capacitors store electrons as static electricity. A thundercloud is a great big capacitor with zillions of electrons clinging to the almost infinite surface area of individual raindrops. And as everyone knows, this huge stored capacity can be released in a “bolt of lightening.” Capacitors can be recharged almost instantly but also they release their energy almost instantly, rather than the even flow of a battery. One of their major uses is in flash photography. But their capacity for storing power is also limited. On a pound-for-pound basis, the best capacitors can only store one-fifth to one-tenth the equivalent of a chemical battery. On the other hand, batteries can start to wear out after five years, while supercapacitors last at least three times as long.

Back in the 1950s, engineers at General Electric, and later at Standard Oil, invented what have come to be called “supercapacitors.” Basically, a supercapacitor changes the surface material and adds another layer of insulating dielectric in order to increase storage capacity. Surface area is the key and engineers discovered that powdery, activated charcoal vastly increased the capacity of the storage plates. Dielectrics were also reduced to ultra-thin layers of carbon, paper or plastic, since the closer the plates can be brought together, the more intense the charge. Since then they have begun experimenting with graphene and other advanced materials that may be able to increase surface area by orders of magnitude. All of this means that much more electricity can be stored in a much smaller space.

But the problem of low energy density remains. Even supercapacitors can only operate at about 2.5 volts, which means they must be strung together in series in vast numbers in order to reach voltage levels required to power something like an electric car. This creates problems in maintaining voltage balance. Still, some supercapacitors are already being employed in gas-electric hybrids and electric buses in order to store the power siphoned off from braking.

Researchers in the field now see some possibility for convergence. Most exhilarating is the idea that the frame of the car itself could be transformed into a supercapacitor. Last month, researchers from Vanderbilt University published an online paper entitled, “A Multifunctional Load-Bearing Solid-State Supercapacitor,” in which they suggested that load-bearing materials such as the chassis of a car or even the walls of your house could be transformed into supercapacitors to store massive amounts of electricity on-site. Combined with advances in evening the flow of electrons from supercapacitors, this opens up whole new avenues of approach to the electric car.

All of these developments are a long way off, of course. Still, supercapacitors support the possibility of pulling out of your driveway in the morning and returning at night in your EV without needing to gas up with foreign oil at your nearest filling station.

Arctic Leaf

The oil industry and API, at it again. When will they ever learn?

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Never a dull moment! The API is at it again. Just a few days ago, it dramatically issued a survey indicating that close to 70% of all consumers were worried that E15 (a blend of 15% ethanol and 85% gasoline) would damage their cars. While the survey was done apparently by a reputable firm, it was not attached to the press release, preventing independent experts or advocate group experts from commenting or verifying the questions and the sample. More importantly, the survey was preceded by an expensive oil industry media blitz that illustrated or talked about the so-called evils of ethanol. The survey and media show reflected an attempt by the oil industry to eliminate or weaken the renewable fuel mandates and lessen competition from alternative transitional fuels.

Americans are usually not Pavlovian in demeanor or behavior; we do ask for second and even third opinions from our doctors. But when only one group, in this case, the oil industry, has put out a continuous flashy very expensive multimedia message, the API’s survey results were almost preordained to reflect the published results. Whatever the industry wanted it got! If you tell a misleading partial story to create fear and uncertainty, long enough, it will likely influence many. In this case, the API, if it had a nose, its nose, similar to Pinocchio’s, would be growing and growing and growing.

Let’s look at the facts — never acknowledged by the API in its “Fuel for Thought” campaign.

  1. DOE effectively demolished the API-supported study many months ago indicating that the sampling approach was wrong and the analysis was faulty. DOE’s study used a much larger number of vehicles and was far more rigorous concerning methodology. (Just to let you know, API is an oil industry funded group.)
  2. Many countries around the world have used E15 and higher ethanol blends as a fuel without significant problems. They are seen as a way to reduce environmental problems. They are cheaper than gasoline and they reduce the need, at times, for oil imports. Put another way, they improve quality of life, lower costs to the consumer, and are good for the economy and security.
  3. Although oil company franchise agreements with gas stations have limited the number of stations able to sell E15, several states (mostly in the Midwest) with multi-fuel stations, have demonstrated the merits of E15. Early data appears to discount engine problems.

Hell, Henry Ford’s initial car was designed to run on pure ethanol until the temperance movement supported by Standard Oil banned the use of manufactured alcohol. I know Standard Oil was very concerned that Americans would drink ethanol at their favorite bars or in front of their favorite fire place with their favorite significant other. Praise be to Standard Oil for salvation!

The law (RFS) requires a 10% ethanol blend with gasoline. More than a year ago, EPA OK’d the sale of E15 (for most cars particularly those produced after 2001). In June, the Supreme Court refused to hear the appeal by the oil industry of EPA’s standards.

API’s media campaign raises the food versus fuel fight canard because ethanol is produced mostly from corn as the feedstock. But the narratives neglect to raise the fact that the evidence concerning the negative impact on food is disputed by reputable analysts who indicate that, for the most part, the corn used for ethanol production is not your friendly grocery counter corn. Put another way, most of the corn to ethanol conversion comes from corn not able to be used for food. Yes, there still maybe some impacts on corn production and prices because of the growers reallocation of land, in light of the differential between corn and ethanol prices, to ethanol. However, many studies suggest that if a negative food impact exists, it is relatively minor. It is a worthy debate.

It appears, that API, conveniently, forgets to mention that ethanol can be produced efficiently and effectively from natural gas and that cellulosic based ethanol is now being manufactured or will soon be manufactured in large volumes by several companies. Further, Clean Energy Fuels announced this week that it will start selling fuel made from methane in landfills and other waste sources in over 40 stations in California. Success of these initiatives, likely, will mean the end of the fuel versus food issue. If success is combined with the inexpensive conversion of existing cars to flex fuel cars permitting them to use alternative fuels, America will be blessed with a much cleaner, environmentally safe, and cheaper alternatives to gasoline- assuming the oil industry doesn’t block their sale at fuel stations.

Clearly, the oil industry does not want competition at the pump from ethanol…whether corn, cellulosic, garbage or natural gas. The American public should be wary of misleading guerilla marketing through industry funded surveys or not so benign expensive media blasts by captive organizations like API. Hopefully, the American consumer will not be confused for long. Paraphrasing a song by Peter, Paul and Mary about war and peace and a statement by President Lincoln, when will the oil companies ever learn?, and, if they don’t learn, when will they recognize “they can fool all the people some of the time and some of the people all the time but they cannot fool all the people all the time.”