your questions about renewable energy world

Your Questions About Renewable Energy World

Sandra asks…

How much money was made from renewable energy 2011?

I’m trying to see how much money was made from renewable energy sources such as solar and wind.

admin answers:

Thats a good question. Perhaps not as much was made as was spent developing those sources. Renewable energy has been a prevailing issue due to our energy dependence and the high cost of oil. While the high cost of oil makes huge amounts of money for oil companies and OPEC, we will undoubtedly one day have to resort to the use of alternative and renewable energy to power our vehicles along with other modes of transportation as well as heat our homes and generate electricity for households and businesses. My speculation is that we will continue to use light sweet crude until the wells in the middle east run dry and then develop corn ethanol and become the primary exporter of fuel in the world bwahahahaha

Sandy asks…

Which renewable energy source has the greatest net energy yield?

Which renewable energy source has the greatest net energy yield?
A. Solar Energy
B. Hydroelectric
C. Wind
D. Biomass
E. Hydrogen Fuel
F. Geothermal

And please explain why you picked the answer , for example :

F , Geothermal , this is beacuse …….

Thanks , i need the answer+explaination by tonight .

admin answers:

Geothermal As A Green Energy Source
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Geothermal energy is energy obtained by tapping heat from the earth itself. This comes from magma and the radioactive decay of uranium, thorium, and potassium.

The downside to geothermal energy is the fact that it is expensive to build. On the other hand, because the earth’s crust continuously decays replenishing the heat, it is still a renewable source of energy.

There are three types of geothermal plants around. These are namely dry steam, flash, and binary.

Dry steam plants take steam out of fractures in the ground and use it to directly drive a turbine that spins a generator.

Flash plants take on water at temperatures over 200 °C, out of the ground, and allows it to boil as it rises to the surface then separates the steam phase in steam/water separators which runs the steam through a turbine to generate electricity.

Last, you have binary plants. Here, hot water flows through heat exchangers and that boiling organic fluid is what spins the turbine.

Once power is generated, the condensed steam and remaining geothermal fluid from all three types of plants are injected back into the hot rock to pick up more heat.

Geothermal plants are used operational in different parts of the globe. These are usually located in geologically unstable parts of the planet. You can see some in Chile, Iceland, New Zealand, United States, the Philippines and Italy. At home, two most prominent areas for this are in the Yellowstone basin and in northern California.

If you were to compare the amount of energy collected from geothermal to solar, you still get more from the sun. Despite that, people should still use it since solar energy cannot be harnessed when the clouds block the sun’s rays from reaching the solar panels.

Geothermal energy is a green energy source just like wind, hydropower and biofuel because it is a renewable. By maximizing its potential, we don’t have to worry about the price of oil in the world market when it hit more than $110 a barrel and is now under $40 in the world market.

But that is not the only thing we should be concerned about. We should also do our best to protect the environment given that coal fired and nuclear power plants produce harmful gases and radioactive waste that may cause to people and the surrounding areas.

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Why Is Hydropower A Green Energy Source?

Why is hydropower a green energy source? It is because we are able to harness electrical power by converting water into electricity.

The use of hydroelectric power or even hydroelectricity dates back to Ancient Greece and China when they installed waterwheels in rapidly flowing rivers to turn millstones and other equipment. Years later, this was used in the New World which is now known as North America to power saws and other equipment.

But the hydroelectric plants of today still use the same basic principles as the historical waterwheel with some variations. The difference is that we use the force of the power to push the turbine which in turn powers a generator thus generating electricity.

To make sure that there is a steady flow of power being produced, a dam has to be built to retain the water. If there is a need for more power, the gates of the dam are opened so water can be released. During non-peak, the gates are closed. To ensure there is water at all times, some dams have a recovery and pumping systems to the water released can be used again.

There are issues with the use of hydroelectricity. Some claim that it poses a problem for fish and aquatic plants on both sides of the dam. Because the flow of water has been altered, the nutrient rich silt which helps crops grow could be affected which is exactly what happened when the Aswan Dam was completed in Egypt.

Lastly, you have ocean thermal energy. Here, you get power based on the different temperatures in the water. For this to work, you need at least 38 degrees Fahrenheit difference between the warmer surface water and the colder deep ocean water. Still in the trial stage, it is used Japan and Hawaii.

Hydropower is a green energy source. It is safe to use and what is even better is that it is renewable.

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My answer is : Hydro and Geothermal

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Your Questions About Renewable Energy World

Richard asks…

Instead of funding the Gulf Coast war to secure oil, should the US have focused on renewable energies?

Instead of provoking war with Iran and Iraq, causing thousands of deaths, to ensure control over the Gulf Region’s oil reserves (understandably because it holds an estimated 65% of all the world’s natural oil supply), we could have instead focused our funds on research into renewable energies, As the world moves toward renewable energy sources like wind, solar, and hydrogen, Saudi Arabia and the gulf region will have less influence over the world’s energy supply.

“If we really decided that we wanted a clean hydrogen economy, we could have it by 2010”

-US National Renewable Energy Laboratory Researcher, April 2001
@Ken: Bush slashed annual spending for energy efficiency and renewables but had no problem with preparing for a war that costed around $200 billion.

admin answers:

So what would you propose we use in the time until renewable energy is ready for wide scale use? It’s not like we can throw a bunch of money at it and have available right away. Even if they did invest all the money spent on the Gulf War (not “Gulf Coast” – that’s the coat along the Gulf of Mexico), we still would be years away fro wide scale use. And what would you propose for those people that can’t afford to purchase new cars using this new renewable energy source? Do we tell them they have to go without? Or would we have the government provide them with new cars, using taxpayer money to pay for them?

I don’t think the Gulf War was handle very well, and could have been done differently. But the oil was only one part of it. There was a lot of other reasons for the war.

Betty asks…

How and where to start a thesis related to sustainability and renewable energy?

I want to do my Bachelor’s thesis in the field of Sustainability and Renewable Energy in an economical perspective (e.g. how to apply it in our society without given up something) . But how to start?

admin answers:

What we are envisaging is:
all that is required- from fur, fuel, to fun, entertainments are self sufficient. It is possible in an understanding community, with proper planning for all – from animal breeding, herbs, crops, for computers, contact lenses, etc. Etc… , as in the old civilizations. While those generations used hardly a few k calories/day/person, & the population was not much, our set up, with much more population, mostly illiterate, uneducated
[ educated world only contributes even now for the NON SUSTAINABILITY, AND ECOLOGICAL DESTRUCTIONS, & IMBALANCES ! ] , set up, the sustainability CONCEPT is a tough thing to attain. Youngsters like you only can save whatever is available now for the next generations !

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Your Questions About Renewable Energy World

Mark asks…

Where in the world is there undergraduate degrees in renewable energy and/or sustainability?

I’ve already found a few, such as the University of New South Wales – Photovoltaic/solar energy degree. However, I would like to fully know all my options for undergraduate degrees in solar energy/wind energy/renewable energy etc. Most other programs I’ve found have been standard engineering degrees, which lead to graduate work in the subject. Any university in the world is the scope, as I’m not committed to residing with the United States.

admin answers:

I think Slippery Rock University

George asks…

Can you make money by buying stocks of renewable energy companies?

since global warming and the need for more greener energy like wind power increases, is it really possible you can make lots of money by buying these companies now that are worth virtually nothing, and wait until the world gets the need of renewable energy? (buying shares of stocks). Thanks

admin answers:

Nobody can predict the movement of any stocks whether going up or coming down. Many of the market professionals use fundamental analysis of companies along with technical analysis like chartology, option movements and relative price strength of stocks.

There might be many people who think the same logic as yours and made investment in renewable energy companies. Consequently, some of these companies’ shares have gone up significantly where you might have to find a good spot to buy at certain time.

What you need to do is to study the company’s performance (revenues and earnings and their growth) in relation to the stock price. Also, look into the company’s financial condition (does it have a lot of debts?), market share of its products, product leadership, and earnings browth rates vs. Its competitors.

Since you will be investing your hard earned income, be very careful in doing the preliminary studies before investing. I recommend you also read a couple of books on investment.

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Your Questions About Renewable Energy World

Betty asks…

How much money does the world spend on renewable energy?

I was wondering how much money does the world as a total spends on renewable energy?

admin answers:

17 trillion a year

Laura asks…

What are the best examples of renewable energy being put to good use in the real world?

I’m writing a report for school on the future of renewable energy (including wind, water, solar, geothermal, and biofuel), and want to give some real world examples of how renewable energy is being used effectively today. What strikes you as some of the best real world examples you’ve seen or heard of?

admin answers:

Geothermal energy used in Iceland. Iceland’s many geysers and hotsprings make it an excellent location for geothermal energy.

Niagra Falls and Hoover Dam… Provide a ton of electrical power.

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Your Questions About Renewable Energy World

Sandra asks…

Who is doing renewable energy education? How are you accomplishing the task? What are you focused on?

I am researching the current energy and renewable energy issues facing the world. The task is very extensive and complicated. Each region has renewable energy opportunities that can be important to environmental issues, economic development, and social needs for all humans. Government agencies, industry, agriculture, educational and research organizations are focused upon massive research efforts. This seems to provide a way to share information, thoughts and ways to help people to improve our lives by conserving energy, find alternative energy resources and realize that fossil fuels are depleting and non-renewable. Can renewable energy be a way to produce additional energy? Networking can provide valuable information to further the advancement of changing habits about energy. I am a farmer with a background in sustainable energy and educational degrees in agriculture. A sustainable energy for industrial and developing countries can improve the quality of life of all human beings.

admin answers:

Wow – i’ve already done my college work… Sorry – i don’t feel like doing yours.

Lisa asks…

Instead of funding the Gulf Coast war to secure oil, should the US have focused on renewable energies?

Instead of provoking war with Iran and Iraq, causing thousands of deaths, to ensure control over the Gulf Region’s oil reserves (understandably because it holds an estimated 65% of all the world’s natural oil supply), we could have instead focused our funds on research into renewable energies, As the world moves toward renewable energy sources like wind, solar, and hydrogen, Saudi Arabia and the gulf region will have less influence over the world’s energy supply.

“If we really decided that we wanted a clean hydrogen economy, we could have it by 2010”

-US National Renewable Energy Laboratory Researcher, April 2001
@****: Yes, renewable energy is not yet sufficient for widespread use at present, but with more research, it could become a main energy source.

admin answers:

Yeah, we control the Middle East’s oil….someone better tell the Iraqis and the Saudis ……..

When did we “provoke war with Iran”? I must have missed it……..

Go over to the Environmental… Section and read something about ‘the hydrogen economy’….how it takes more energy to break hydrogen loose from water than it produce,how it is a remarkably low density fuel, and how, being the smallest molecule, it is a bear to store..it will leak right through normal steel tanks walls, as an example…..oh yeah, it explodes when it finds a spark or a heat source……the only people flogging hydrogen are those trying to sell “run your car on Water…The Secret Big Oil doesnt want you to know”….and they are, to a man/woman, scammers….

Some people’s world must be a sad place, filled with conspiracies and devoid of principles , courage, and honor……that they can not understand why we…and 45 other countries..went to liberate Kuwait in the first war, and then get rid of Iraq’s Hitler in the second

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