Sustainable Development » Green Energy Sources

Biomass A Green Energy Source and An Area of Bioenergy

Tracey — Mon, 29 Jun 2009 03:47:27 +0000

Is biomass a green energy source? According to experts, yes it is. In fact, it is one of the three main areas of bioenergy. But what is bioenergy? Well, it is a process by which organic material such as animal waste, plants and wood are used to generate electricity, produce heat and also aid in the production of biofuels.

In the case of biomass, hot air or water is generated to produce electricity. This is done through direct combustion and is considered the simplest and most common method of generating energy from biomass.

Aside from generating electricity, biomass can be used for hot air production so you can keep a place warm. For this to work, biomass has to be combusted in a furnace where it heats either water or air. Speaking of water, this enables you to have warm water so you can take a shower. In short, biomass in itself can also be used in a small scale as a heating system.

Since you can generate electricity and heat, some people have been able to combine the two which is known as combined heat and power or CHP. Something that many consider to be good as you use one energy source for two purposes.

If you are able to compare the amount of electricity generated between biomass and let’s say solar energy, you will notice that biomass produces more because the energy in plants is already captured and stored.

You don’t have to collect it first which is what happens with solar or even wind energy since this is manufactured technology. It is readily available unlike the other two which is totally dependent on the weather.

Another is the fact that you can even use organic waste to product electricity. No other green energy source can do that and by using this extensively, any government can save money because you don’t have to spend money to dispose of the waste and you will no longer depend on foreign oil that much to power your plants.

The downside to biomass is that because you have to burn waste and other organic materials to product power, you add to the pollution which is already in the atmosphere. But this can be offset of course by planting more crops which we know helps reduce the amount of carbon dioxide in the atmosphere.

You will also have to shell out a lot of money initially for the costs of labor, the transport of these fuels and how these should be stored.

Biomass uses renewable natural resources which is why it is considered a green energy source. This means that we have an endless supply of it around just like the power of the sun or the wind which flows from the ocean. The challenge is to find suitable land that has a sufficient water supply so these will be able to grow.

This means that in areas where water is not that abundant, you cannot rely on biomass technology to generate power. When that happens, you use other means and one good example given the right geographical location is wave energy which is the process of generating power from the water.

There is a way to generate power without causing harm to the environment. We have the technology and the green energy sources. We just need to muster the willingness to make it happen.

For more information on green energy visit our ‘Green Energy‘ website.

Advantages And Disadvantages Of Using Green Energy Sources

Tracey — Sun, 10 May 2009 06:34:28 +0000

We are now aware of the effects of global warming. Fortunately, it’s not too late and we can still change which is why many are pushing for green energy sources. The advantage of using green energy sources is that it is clean so it does not emit anything harmful into the air which has an impact on the environment. It is also renewable which means we will never run out of it unlike oil which is expected to dry up in a decade or so.

Although green energy facilities are expensive to build, it requires less maintenance so you don’t have to shell out a lot of money to operate it. It can also bring economic benefits to certain areas even boost tourism. While these sound good, there are some who say that there are advantages to using such technology.

While green energy sources can produce electricity, how much it can generate is not consistent. This is because we have no control of the weather so if a certain area relies on solar energy and there is a weather disturbance, it will not be able to convert sunlight into electricity.

Building these facilities also requires a lot of land so we may have to cut on farmland which is what many are concerned about if more wind turbines are to be put up.

Another disadvantage is the fact that some of the green energy sources cannot be installed in certain areas of the planet. For instance, wave energy can only be utilized if the waves coming from the ocean reach at least 16 feet. The use geothermal energy can only be done in geologically unstable parts of the planet.

But if you look at such arguments, places that cannot use one form of green energy source can be substituted for another. If wind turbines need more space, they can be installed near the coast instead of putting these on land. A study shows that you can generate more electricity while these are in the ocean.

While the weather is something we cannot control, it is not everyday that there is a weather disturbance so this too shall pass. If solar energy is being used and the sun is covered, the emergency generators will be activated and use up the energy that was stored.

The point is that there are ways around the arguments put by certain individuals which discourage the use of green energy sources. In fact, research is ongoing to try and harness other means to generate the power we need.

A very good example of this is called ocean thermal energy. Power is generated by harnessing the different temperatures in the water. It is currently being used on a small scale both in Japan and Hawaii.

In the US, only 7% of green energy sources are used nationally. This was much higher 11 years ago and if we don’t have to worry about the cost of oil or even reduce our dependency on it, we have to invest more in this clean energy.

We can get it from green energy sources such as biomass, biodiesel, geothermal, solar, water and the wind. These are things we have all around us and all it takes is for someone to harness it instead of relying on traditional non-renewable means to produce energy.

Solar Energy Is A Form Of Green Energy Source

Tracey — Sun, 05 Apr 2009 05:51:05 +0000

Solar energy is a green energy source because it is a renewable and it does not cause any harm to the environment. This is achieved by converting the sun’s rays into electricity with the help of solar cells.

There are three basic approaches how we can use this form of green energy source namely passive, active and by using photovoltaic cells.

When we refer to passive solar energy, nothing is converted. What happens is the building’s design helps avoid heat loss and gets the most out of day lighting.

Such a technique can also be used in homes because studies have shown that this can reduce the heating requirements by as much as 80% with minimal cost. This means you don’t have to turn on the air condition or heater that often and if everyone does that, we don’t consume that much electricity which we get from non-renewable resources.

The second approach which is active solar energy is the first way of converting sunlight into heat. You should know that there are certain limits to this one and all it can do is make sure you have hot water.

The third approach is the big scale version and it can power an office or an entire home. This is done with the help of solar cells that convert sunlight into electricity. The smallest ones around can be seen in calculators and watches with large ones planted over huge acres of land.

The only limitation to this green energy source is the fact that it can only generate power when the weather is good and the sun is out. Should it rain, then nothing is collected and converted. When this happens, the auxiliary system is turned on until the weather improves.

Despite that, scientists and students themselves have made solar powered cars. NASA or the National Aeronautical Space Administration has sent satellites into space that are powered by solar panels. A fully functional airport can function on its own thanks to solar power even if it is situated in the middle of the frozen desert.

So people can see the awesome power of solar energy, did you know a kilowatt of solar energy can produce 5.5 hours of electricity per day. If you have more solar cells in place, naturally you will be able to produce enough power to last several days.

Solar energy is just one form of green energy source around. Through the years, we have learned to tap other resources and these examples include wind power, geothermal energy, hydroelectricity and biogas. These are all safe and by using these more often, we don’t need to depend on oil which is a nonrenewable resource.

To make this happen, we have to persuade our law makers to promote the use of such resources. Although you hear speeches left and right about their concern for the environment, it is all talk and not that much action. It is something that has to change.

Two countries that have increased solar usage happen to be Germany and Japan. Spain, France, Italy and South Korea are next in the list and where is the United States? Well, one thing is for certain and that it is not in the top 10 despite the fact that it is an industrialized nation.

Benefits of Green Energy Sources

Tracey — Wed, 01 Apr 2009 03:44:49 +0000

For a very long time, we have relied on fossil fuels. It provides heat to our homes, gas for our cars and electricity. Since we are now using it more than ever, there is a consequence. We are depleting our resources and slowly killing our planet. Fortunately, we can change our ways and then shift our attention to green energy sources.

But why green energy sources? Well because there are advantages to using them which we will never be able to get if we don’t change our ways. This is also even if some will argue that the problem with green energy is that it is sometimes difficult to generate the power we need. While that may be true, that is why there are other green energy sources available and we just to know which ones are viable given the geographic location.

The various green energy sources such as solar, wind, wave, hydropower and geothermal do not produce anything harmful which may have a negative effect on the environment. This is the exact opposite of what you get when you continue to operate a coal or nuclear power plant.

Coal you have to remember releases carbon dioxide into the air. On its own, it may not cause that much damage but there are currently 50,000 coal plants around the world and that number is expected to grow.

Nuclear plants may not release anything harmful into the air. The issue is how we dispose of the spend rods and if another nuclear accident should occur. We remember Chernobyl and Three Mile Island. We have probably learned better ways to prevent another incident from happening. Through the years, a few minor accidents have occurred and although the leak was contained, just imagine if it wasn’t?

Green energy sources may not be maintenance free but at least it does not require that much to maintain them compared to conventional means. In the end, we save money because such facilities don’t cost that much to operate.

The next advantage of using green energy sources is that we will never run out of them. For centuries, the sun’s rays have reached so has the wind which is blown from the sea. By using it, we decrease our dependence on oil which is a nonrenewable resource.

If you think about it, many of us have taken these green energy sources for granted. If we do the right thing now, future generations will not have to face the mess that we could have handled on our own years before.

In short, the power is in our hands. We have the technology and we know what to do with it. The only thing we need is to do is to put our money where our mouth is because despite the number of conferences on global warming and climate change, little has happened.

It is easy to talk about how concerned we are about the environment but you have to ask yourself when will more solar panels or wind turbines will be erected? When will the number of coal or nuclear power plants be reduced?

Green energy sources is the solution to the environmental, political and social problems of this lifetime. By spending more on these technologies, no country will have to depend on another or even a corporation for their power needs because they are self dependent and free.

Sustainable Energy is Geared to Sustain Life

Tracey — Wed, 01 Apr 2009 03:30:52 +0000

Today climate change is a reality that is acknowledge by even the most doubtful of skeptics. The warmer temperatures in areas where its supposed to be cool, scorching summers, and bone chilling winter have become a pattern that people cannot simply ignore.

Funny enough it seems that people are getting desperate and all are turning to bio-fuel like it’s the savior of all mankind. So what is bio-fuel? Bio-fuel is any gaseous, solid, or liquid material derived from biological materials. The argument ensues when people talk of the future. Bio-fuel’s raw materials are usually agricultural crops that are made to undergo fermentation and certain processes in order to produce bio-fuel.

The Problem

Who is the world’s largest oil consumer? Those with the highest number of vehicles running their roads, countries like the US, England and generally most of the European nations. When you think about it bio-fuel is made from corn, sugarcane, palm oil, vegetable oil, and etc; where do these agricultural crops come from? Third World Countries.

In Mexico they have this “tortilla crisis”. Corn which is the basic ingredient of tortilla is now sold five times the price it used to be marketed for. The reason for the inflated prices? The demand of bio-fuel in highly developed countries has severely altered the business people’s sense of profit. Why sell for a dollar when you can for 5 because the demand is now higher.

Who Suffers?

The first world countries will have to export goods from the third world countries to fuel their increasing demand for energy. The third world countries are usually tropical ones located near the equator, hence a higher crop growth of corn, and all those needed to manufacture bio-fuel; but for these countries corn is food, so is sugar cane. For the first world to survive the t poorer countries must either starve in hunger or break their back working to be able to afford the price hikes of the most basic of all commodities: food.

A Compromise

So what should we do? We need to address the problems of the environment and pollution, but it is also not right that to solve a problem we must create one. Think about it if the agricultural countries go into decline because its people can’t afford food then who will till the land to supply the giants with endless bio-fuel?

Sustainable energy is geared to sustain life, not make it harder. A proposal is in order. Since the crops needed for the production of bio-fuel can only survive in tropical countries then the governments of the more well off countries will have to invest in the agricultural countries to supply their own demand. These crops must be independent from those for local consumers. Stringent rules governing pricing and distribution must be implemented to further protect the source of the energy.

Sustainable power means the world working hand in hand to create a better way of life for the future. The road to betterment is paved with hard work and dedication. The ancient Egyptian used sails to go up and down the Nile; they were patient and they reached their destination. Let us all be patient but diligent in our quest for sustainable power to sustain life.