Biofuels have been around as long as cars have.

A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms.

Generating Electricity from Wing Waves.

Wind turbines, like windmills, are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent wind.

Producing electricity from solar energy.

Solar energy is a free, inexhaustible resource, yet harnessing it is a relatively new idea. The ability to use solar power for heat was the first discovery.

Turbines catch the wind's energy with their propeller-like blades.

A blade acts much like an airplane wing. When the wind blows, a pocket of low-pressure air forms on the downwind side of the blade.

Solar energy may have had great potential

Solar technology advanced to roughly its present design in 1908 when William J. Bailey of the Carnegie Steel Company invented a collector with an insulated box and copper coils.

We have been harnessing the wind's energy for hundreds of years.

For utility-scale sources of wind energy, a large number of wind turbines are usually built close together to form awind plant.

Biofuels are produced from living organisms.

In order to be considered a biofuel the fuel must contain over 80 percent renewable materials.

Geothermal energy is the heat from the Earth.

Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.

Geothermal heat pumps can tap into this resource to heat and cool buildings.

A geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building.

In the future, civilization will be forced to research and develop alternative energy sources.

Possession of surplus energy is, of course, a requisite for any kind of civilization, for if man possesses merely the energy of his own muscles, he must expend all his strength - mental and physical - to obtain the bare necessities of life.

Showing posts with label renewable engineering jobs. Show all posts
Showing posts with label renewable engineering jobs. Show all posts

Tuesday, January 3, 2012

Should You Invest In Solar Energy

Should You Invest In Solar Energy
I've been hesitant to invest in the subject of my lifework. Turns out this was wise.

However, what about now? Financial advisors generally remain negative. My philosophy has been to only invest when a promising stock is at a trough. Here are two stocks this past year:

SOLRX is a solar energy index and TAN is the Guggenheim Solar ETF (exchange-traded fund). TAN gets more attractive with this chart:

TAN sells today for 19 and was up to 250 in 2008.

"Harris Roen had a useful article in RENEWABLEENERGYWORLD.COM" yesterday:

Energy Trends that Matter for Investors


We read so much about China being the energy glutton, and, indeed, just to the right you see that China is #1 in 2013, while the USA is #2. However, it turns out that per person, we use twice the energy of Europe and four times that of China.

The average annual growth for the renewables to the year 2040 follows:

Note that solar photovoltaic and solar thermal dominate. Another attractive reason why this might be a good a time as any to take these solar stocks more seriously. Note the puniness of wind energy and bullishness of geothermal.

A kind of negative is that the renewables will increase, but the following chart seems to think that nothing much will change in the composition for the next thirty years:

In fact, FOSSIL FUEL use is projected to INCREASE! I thought for the sake of global warming we would be phasing out fossil fuels. Apparently not so. These graphics were prepared by the U.S. Energy Information Agency.

Mind you, you should not completely accept everything you read. One of the comments to this article I quote:

"Warning: EIA always understimate RE in favour of oil and nuclear ! DO NOT believe it! These estimates are fake! Totally biased! Please read "Global Cooling" and you'll open your eyes! None sane can believe at such an oil production anymore. Shame on you Harris."

Tomorrow I present a case for global warming.

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Tropical Cyclone Narelle northwest of Australia is now up to 85 MPH, but will increase to Category 4 status. Not sure if any populated area will be impacted:

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