Archive for the ‘cleantech’ Category

Shai’s Divide and Conquer!

Monday, April 13th, 2009

Shai Agassi is a real genius—one of my rock stars that I’m just dying to meet. I’ve already got to meet the other big name in electric cars, Elon Musk from Tesla.

He has said before that he’s good at break big problems into smaller problems, solving the pieces, then aggregating the results. I’m not familiar with his work at SAP, but clearly he’s proved this with his divide-and-conquer approach to problem solving here. Computer scientists make some of the best problem solvers out there.

In this TED talk, Shai talks about a shift in thinking: viewing the electric car’s battery a discrete unit that’s interchangeable, vs. today’s mentality where the car is one with the fuel tank (who would buy a car without a fuel tank, or vice versa?)

I’ve previously blogged about unbundling production from delivery before with examples of Amazon.com and it’s IT infrastructure, mobile phones as a poverty buster, and this is kind of like that, but with other concepts tied in – e.g. subsidized pricing (e.g. like how cell phones are subsidized by carriers).

The analogy Elon Musk uses (I can’t find where he said this, but I swear I remember him saying this), is like air travel today. I can fly to Europe from California for $500. But that’s because I’m not the first person to ever fly on that plane, nor will I be the last; the same air plane gets reused over and over for many flights. The point here is that the owner of the plane doesn’t have to recoup the cost of the plane with a single flight, it is done over a period of time. The higher the utilization rate, the faster they recoup the investment.

That’s why Elon’s SpaceX goal of building a reusable rocket is so revolutionary (most people don’t realize this) and is an important step for man-kind. Imagine being able to fly to the moon or other planets in our solar system for the price of a flight ticket?

Back to Better Place. In Shai’s talk, he shows how battery for electric cars follow a Moore’s law-like curve; battery prices will drop as its technology increases. By unbundling the ownership of the car and the battery, you can increase the utilization rate per battery which result in people owning these cars having access to the latest and most efficient battery at that time (vs. someone stuck with the same battery for the lifespan of the car). Small but important point.

Shai’s a very cool guy who is literally, changing the world. I’m a big fan.

Check out his TED talk if you haven’t already!

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Posted in changing the world, cleantech, entrepreneurship, ideas, innovation, passion, people i like, startup, technology | Comments

Towards a greener computer–but what does that really do?

Friday, March 7th, 2008

MSI announced that the company has recently invented the world’s first powerless air cooler for computer motherboards. For those new to computer hardware, as we ignore Moore’s Law and advance computer technologies by making them faster and store more data, cramming more and more transistors into a piece of silicon, the heat generated by all these components start becoming a non-negligible problem–as anyone managing a data center with hundreds of computers will identify with.

There are many ways to cool the insides of a computer, but the most common is through the use of heatsinks and fan’s. Computer hardware junkies prefer a more advanced hack: liquid cooling, a more quiet and efficient (and l33t) way of dissipating heat from their overclocked CPU’s. This invention by MSI makes the fan inside your computer power-free, thus less power drawn from the computer power supply.

The basic idea employed here is one derived from the Stirling Engine. MSI’s invention captures the heat from the component, whose energy is then converted to push the fan blades around, which in turn cools the heatsink.

From their press release:

The “Air Power Cooler” transfers the chipset heat into air momentum, when the air becomes hot, the air will expand then push the fan to rotate and In doing so cooling the heatsink immediately. After the air moves from the bottom to top of the piston, the air will become heavy to push the up piston down. The better air piston design can transfer over 70% heat power and transfer to air power, that’s great efficiency transfer from Stirling engine theory. In a comparison with solar power the transfer rate is only around 20~30% requiring more surface and as a result cost.

I think the claim of besting solar power is interesting, but would like to see some independent tester verify that statement (just for my assurance that this isn’t the typical corporate PR mudslinging nonsense).

This actually reminds me of Tesla Motors’ regenerative braking system. Energy from deceleration is captured and stored for later use in acceleration. Genius!

In a battery-powered electric vehicle, regenerative braking (also called regen) is the conversion of the vehicle’s kinetic energy into chemical energy stored in the battery, where it can be used later to drive the vehicle. It is braking because it also serves to slow the vehicle. It is regenerative because the energy is recaptured in the battery where it can be used again.

Tesla Motors is an interesting electric car startup in Silicon Valley headed up by Elon Musk (of PayPal fame), who also started SpaceX and SolarCity (I’m an admirer!).

But I digress.
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Posted in cleantech, did you know, geeky, hardware, ideas, innovation, technology, things to ponder about | Comments

$3Bil USD poured into cleantech in 2007, 10Bil projected by 2009

Monday, March 3rd, 2008

Can the solar system drop it like it’s hot?

Venture capitalists keep putting more green into green technology.

In 2007, venture investors globally backed 221 companies developing so-called clean technologies with $3 billion, according to data released from Dow Jones VentureSource, up from $2.1 billion invested in 173 deals in 2006. VentureSource is owned by Dow Jones & Co., the publisher of this newsletter.

The U.S. led all geographic regions in venture investing in the category, according to the data, accounting for 83% of global investment in 2007.

Venture investors remain bullish on the sector, despite some rumblings in the industry that there may be a cleantech bubble that formed in the last year.

“[Cleantech] is going into very diverse markets that are enormous and can sustain a tremendous amount of capital and new technology,” said Michael Bevan, managing director of Radnor, Pa.-based cleantech venture firm Element Partners.
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