Posts Tagged ‘energy’

CR Especial v2.2 videos

Monday, August 24th, 2009

I finally got 2 of the videos of my cousin's and my work on the Vertical Axis Wind Turbine (VAWT) in Costa Rica up.

Some extended information: Each of these turbines is 6 feet tall... the total width of the two turbines is 10' ... it's pretty big and will definitely crank out the wattage!  We estimate that the payback period for these simple to build[1] turbines will be 2-3 years.

Each of these was built for about $250 excluding the generator, electronics and batteries.  We think and hope that they will last for at least the next 10-20 years with very little maintenance.  They are solid steel construction turning in automotive axle supporting ball bearings.

[youtube]http://www.youtube.com/watch?v=bSTCOtWx52g[/youtube]

[youtube]http://www.youtube.com/watch?v=ScD1xW9udF0[/youtube]

  1. built by 2+ non-engineers with a welder a drill and a few odds and ends from the local Costa Rican hardware store []

Back from Costa Rica

Monday, August 17th, 2009

I have just returned from my windmill building expedition to Costa Rica and have great news to report!  The wind is strong, the windmills are (hopefully) stronger, and after another trip in December they should be producing more than enough power to suit their needs.

I'll be posting  a full how-to article on Instructables.com and here, pictures and Youtube videos as well in the near future... but for now here are those beautiful windmills!

It was fun and hard work.  And inspiring.  There are so many more ideas in the works!  Stay tuned!

greentheo with the turbines

greentheo with the turbines

Greenest Transportation

Monday, July 6th, 2009

I've recently changed my thoughts on the greenest form of transportation.   The best and most economical transportation in the future will be Natural Gas or biodiesel powered busses, complimented by electric grid powered trains (or just biodiesel-electric) and natural gas powered vehicles.

The advantages of using Natural Gas and biodiesel is that any existing gasoline powered vehicle can be converted to run on Natural Gas and any existing diesel vehicle can be run on biodiesel.   Natural Gas burns cleaner than gasoline too.  A further bonus is that no highly toxic battery packs will be needed.

More importantly though, Natural Gas can be manufactured in anyone's backyard or can be piped directly to our house.  Most neighborhoods in the US have natural gas infrastructure.   Bioreactors utilize common strains of bacteria to take biomaterial including fecal waste and turn it into compost and fuel under anaerobic conditions.  Biodiesel is made simply from vegetable oil.  A Natural Gas and biodiesel based economy will be more efficient, less polluting and less dependent on foreign oil.

Mass transportation like buses and trains will continue to help green transportation but only as cities develop in more controlled and planned ways.

My prediction... if oil climbs like it did in 2008 and keeps going up we will see the emergence of not electric or hydrogen cars, but natrual gas conversion kits and more diesel based vehicles.  It's simply cheaper and more robust.

Offsetting the World's CO2 for $3 Billion

Wednesday, May 6th, 2009

My brother, who always sends thoughtful and well reasoned articles, sent me this article on what appears to be the cheapest and easiest solution to the problem of global warming: white roof paint.

Akbari, along with Surabi Menon, another LBNL scientist, and Arthur Rosenfeld, a former LBNL scientist and now a California Energy Commission board member, claim that painting urban surfaces in warm parts of the world white or a light color could offset the carbon emissions of all 600 million of the world's cars for 18 to 20 years — at a savings equivalent to at least $1 trillion worth of CO2 reductions.

This is not a hoax: Akbari, Menon and Rosenfeld are three of the country's leading experts in their field, and their study published in the journal Climatic Change is backed by years of carefully calculated data. 

And it would create jobs.

It wouldn't create energy independence, but it would solve the problem for far cheaper than almost any other solution and could be done by the end of the year if we wanted.

Updates on the Solar Heater

Monday, March 9th, 2009

The Solar heater has been running for about 1 month now and I have a few updates to make on it's performance:

space_heater_main_sc.jpg

  •  Maximum observed temperature in room ... ~74 degrees
  • Out of the last 30 days in my office I've only had the heater on 2 times.
  • It's been a bit warmer and sunnier than usual (2 F greater average temp in Feb in 2009 than 2008)
  • Estimated energy savings on electric heating bill in February, March (and by inference Oct and November) ~50-75% of total bill.
  • Number of hours of heat delivered per day ~8
  • Time when maximal temperature is reached ~3 pm
  • Time when temperature in room drops below 65 F after a full day of heating- ~10 pm-1am.
  • Maximum temperature inside heater ~110-130 F (even when it's 30 F outside)
  • Possible efficiency improvements:
    • glass on front of box instead of polycarbonate, with better sealing to minimize convective heat loss and maximize solar gain.
    • air must be collected from bottom of room for optimal heat exchangement
    • neighbor's tree and house must be removed for more direct sunlight.

But overall I'm quite happy with the project.  It has practically already paid for itself and best of all... my wife thinks that it's an acceptabley asthetic project completed on a nice timeline to warrant further tinkering in the garage :-)

Top 5 extremely cheap steps to living a more sustainable way

Friday, February 20th, 2009

My friend once asked me what the word sustainable meant in the context of society and humanity.  My reply was that it was:

"The ability for an organism or organization to perpetuate itself and it's progeny over time"

But how to accomplish such a large goal without breaking the bank?

Below are my top 5 cheapest and most effective goals towards becoming a more sustainable society and person.

  1. Composting - the number one cheapest solution to waste management, healthy food production and greenhouse gas reduction.  When food goes to a landfill it takes with it valuable nutrients.  Furthermore, as it decomposes in the oxygenless environment of a landfill it releases Methane, a greenhouse gas 25 times more 'greenhousey' than Co2.  And even if you don't have a garden, or friend with a garden, to put the compost in, you can always spread it around some trees at the park... I'm sure they'll appreciate it!
  2. Insulation - Insulating our houses and building will keep the hot air in (or out).  It's one of the simplest technologies around and when applied correctly is extremely cheap.
  3. Solar/geothermal heating and Cooling - Sunny climates can get most of their warmth through the winter from the sun, and dry climates can get most of their cooling needs from evaporative cooling in the summer.  If an extra step is taken, warm or cool water from the earth can be used to modify the temperature of a house or building as well.  Cooling and Heating our buildings is the #1 usage of energy in the world.
  4. Walking/Biking for transportation - it may not be suitable for commuting on snowy or blisteringly hot days, or for trips greater than 3 or 4 miles.  But that's okay because the vast majority of trips we make are < 2 miles and in places like CO there are over 300 sunny days a year.  Walking is free and enjoyable!  Biking is almost as cheap.
  5. Micro Farming - aka gardening.  Participting in growing your own food (if only even for a few tomatoes) is perhaps the most beneficial and cheap green activity.  It teaches you about: soil health; what it takes to grow food; what it takes to use water efficiently; how much work goes into getting a return on your investment; and finally it teaches you to be much more conservative with your food purchasing and consumption.  One quickly realizes how what goes into the soil, goes into the plant and ultimately into us! It also helps to really learn the old maxim: waste not want not.

Enjoy your cheap sustainable life!

Kill-a-watt

Wednesday, February 4th, 2009

Greenies are known for being penny pinchers and energy misers.  But how to go about it in a scientific way?  And can you even really save that much money/energy consumption?

Recently I purchased a Kill-a-watt (~$20 on Amazon.com).  The kill-a-watt is a simple device that plugs into the wall.  To measure your energy usage, you simply plug in the appliance or a power strip with several appliances.  It has an LCD and several functions to help you monitor your device(s) energy usage... both when they are on and when they are off.

But when my coffee maker is off, it's off right?

No!

Surprisingly (to me at least) most modern appliances still consume a fair bit of electricity when turned off!  Commonly this phenomenon is known as "Vampire" electronics.

So how much money will I be saving by utilizing my kill-a-watt and a trusty ol' on/off power strip?

My work desk includes the following items:

  • speakers - 25 watts on
  • laptop - 20 watts on, 1 watt off
  • cable modem and wireless router - 25 watts on
  • Xbox - 90 watts on , 1 watts off
  • Monitor - 30 watts on, 1 watts off
  • Desk aggregate consumption during work hours (while not playing video games) - 100 watts
  • Desk aggregate (laptop, Xbox and monitor off) - 50 watts !

Summing up, I can see that for the 16 hours a day that I don't use my desk, it's still drawing 50 watts.  Over 1 year's time this consumes $33.28 of electricity.  Call me a penny pincher but by using a power strip for the whole system, and spending the 2 seconds per day to turn the strip on and off I can squeeze out just a little bit of savings (making the equivalent of $230/hour... just to flip a switch on and off).

I can't wait to find more ways to kill my watts!

The Post Capitalist Economy

Thursday, January 29th, 2009

Not every bit of news about the current 'economic climate' is all that bad.  Consider the proposition that we are entering a post capitalist economy.  What could be so bad about the empowerment of the average citizen and the downfall of the robber barons that have ruled for so long?  Here's why I believe the day of the capitalist ruler may be coming to an end (for now at least).

Traditionally there have been 3 costs for doing business:

  1. Research and Development - the cost of developing the first of a new technology or product.  Traditionally, R&D is done by scientists and engineers.  Several prototypes would be created and tested in the real world.  But as computers have gotten cheaper (very nearly free these days), simulations have replaced trial and error experimentation.  It is now possible to run through millions of versions of the product before even a single physical prototype is made.  Advances in statistics, AI, and computer science along with open sourcing and crowd sourcing are quickly dropping the time and cost involved for birthing an idea into the world.
  2. Manufacture/Raw goods - this is the actual cost of the inputs for the product including labor, raw materials, and energy required to shape those raw materials.   Traditionally humans were used in all of the stages of production.  From digging up the coal and metals to chopping down and hewing the trees to pounding the rivets and welding the metal, humans did everything.  But humans are not machines.  Humans are living, thinking and creating beings.  With the advent of cheap energy and increasingly intelligent machinery one man can now do the job of 100 men (probably more).   If we continue our progress towards free energy and intelligent machinery, manufacturing will become virtually free.
  3. Transaction Cost -   the cost of matching up the product with a buyer.  Traditionally this cost has been prohibitive for the average home business / individual producer.  In fact, in order to overcome the high cost of finding a buyer for the widget one had to gather the capital required to first oduce the good at the cheapest price and then to reach the largest audience possible[1]. But the transaction cost is dropping more and more as the tools to reach the exact buyer (e.g. Google) are being developed.  The internet and home PC has quickly been revolutionizing the way buyers and sellers complete their exchange of goods.

Amongst other things the sharp decline in the cost of doing business is the reason why the economy is currently faultering... or rather it is shifting.  It's faultering for the outdated and outmoded companies that have failed to transition to a faster, more agile and flexible market, a market easier for small businesses to thrive in.

Whereas GMC needs loans of billions to stay afloat, specialty electric car company Tesla has a back order of hundreds of cars.  Whereas Lehman Brothers and AIG are collapsing under their own weight, Paypal, community lending sites and internet banks like ING are thriving.   The New York Times and similar news papers are folding across the nation, but there have never been so many journalists (bloggers are journalists too right?).

Even scientists who have previously been restricted to working only for governments and corporations wealthy enough to afford the hundreds of thousands of dollars of computational and laboratory equipment can start their own enterprise with Amazon's EC2 and the latest 'labs on a chip'.  If the business model is correct, the scientist could potentially scale his company over night, especially with services like Amazon's EC2 computational time sharing service.

It is in this business climate that the behemoths are starting to fall.  They're not quick enough, and their products are not good enough.  For too long they've relied on the muscled advantage that large amounts of capital brought them.  Now as the barriers to entry lower, and more competition arises the only outcome can be cheaper better goods produced exactly for those who want/need them.  In other words, this downfall indicates that we are moving towards a more open and efficient market (the downfall also indicates that massive greed and corruption can in fact bankrupt an industry).

And that's great news, unless, of course, you are a robber baron!

  1. Seth Godin calls this the 'average product for the average person' way of business []

Bailout + electric cars + power grid = free fuel

Monday, December 22nd, 2008

It looks like the auto industry will get the bailout that they've been looking for in the amount of about $18 Billion.

I didn't write the bill but if I had I would have made following changes.  Once implimented we could literally be seeing nearly free transportation (once the electric car has been paid for).

  1.  Condition the bailout on the introduction of at least 5 electric vehicles by GM and Chrysler.  The vehicles would be lead-acid battery powered, have a minimum range of 50 miles and a minimum top speed of 65 mph.   When better/cheaper electrical storage than lead-acid becomes available we'll all switch to it.  With a huge market available many more companies would jump on the battery development bandwagon... batteries are the single sticking point in electrical car design.
  2. While we're up to bailing people out why not just add in a few more dollars and improve the nations electrical grid such that they are smarter and have the capability to withdraw power from electric cars.
  3. Use the electric cars as a giant battery.  Wind power is cheap and way more abundant at night.  Furthermore, running a coal plant at the same power output 24/7 produces greater efficiency than trying to adjust the output to varying and somewhat unpredictable demand.
  4. Currently night time electricity is cheaper than day time and peak electricity so....
  5. The electric car owner charges at night with cheap energy, drives to work using a small fraction of the battery and plugs into a station at work hooked to the grid.  When energy demand peaks occur during the day, the power company pays to take some electricity from the car batteries to meet the demand.  Then a bit later it replaces the used electrity.
  6. As a bonus, replacing the roof of your car with a flexible PV would further reduce overall energy cost for the electric car.

No solid figures for the reader, but since electricity is cheaper as a fuel for an automobile and the difference between peak and night time energy is about the same price as the cheap energy one could likely offset all of the fuel costs.

Wouldn't that be a boon to the economy?  Imagine if instead of paying $1k-2k a year for fuel each citizen had no fuel costs.  If President Bush's tax rebates were an economic stimulus then having no fuel costs would have a double or triple net effect.

Would you....?

Monday, September 29th, 2008

Would you die for the country, or send your son off to a foreign war?

If so... would you consider driving 20% less a year, buying a smaller car, shop locally, use cloth bags instead of plastic, grow a garden in your backyard, work more efficiently, consume less, support clean energy initiatives, support the local economy, turn the lights off when you don't use them?  Would you consider biofuels instead of imported oil?  Would you put up solar hot water heaters on your house or add just a bit more insulation to your attic and walls?

If you wouldn't die for the country would you still consider the above?

Would you die for your faith...or your friends?

If so... would you consider spending more time participating with them/in the faith, giving more of your money and resources, spending less time on yourself and more time on others.  Would you live for your faith... for your friends?

If you wouldn't die for your faith or friends, perhaps you could still live for them.