Posts Tagged ‘SCIENCE’
What Are The Environmental Benefits Of Alternative Energy Sources?
September 22, 2011
This article is going to take you through alternative energy sources, first of all by explaining what they are an alternative to and why they are beneficial. Then by showing that now there are financial as well as environmental benefits to using things like solar energy.
Conventional Energy V Alternative Energy
What we are using right now for the majority of our energy needs are fossil fuels like coal, oil and natural gas. By burning these things we are able to get a lot of cheap energy, and one of the main purposes we put that to is the production of electricity.
The way that electricity is normally generated is through getting turbines to spin. A spinning electromagnet creates electricity, so the trick is to get them to spin. This is usually done with steam, which requires hot water of course. The way the water is heated is by burning fossil fuels. That’s the normal way.
When it comes to alternative energy, some work in pretty much the same way. For example with geothermal power plants, it is the heat from the ground which is used to heat the water to create steam to get the turbines to spin. Other times the renewable resource spins the turbines more directly, as is the case with wind energy.
Just about the only type of electricity production which does not require turbines is that created by solar energy. In that case, the solar panels directly create electricity because when they are set up in such a way that when light hits them, electrons flow. And flowing electrons of course is a description for what electricity is.
Advantages To The Environment
The problem with burning fossil fuels is that by doing that, carbon dioxide is released in to the atmosphere. That is a greenhouse gas, meaning that it contributes to the warming of the Earth. If there is too much of that in the atmosphere then what happens is that the planet warms too much and there are potentially disastrous results.
When it comes to global warming, nobody really knows precisely what the results are going to be. However, predictions have been made which say that the polar ice caps are going to melt and this is going to result in massive sea level rises. What could be even more dangerous though is if the rise in temperatures means that ecosystems do not function anymore, meaning that we cannot grow enough food.
The major advantage of alternative energy sources, therefore, is that they do not cause any pollution. There are no carbon emissions. Of course at the moment their production results in a certain amount, just by manufacturing the necessary equipment, however eventually everything should be powered with renewable energy.
Financial Advantages
Given the important environmental benefits of using renewable energy, you might wonder why we don’t just make the switch straight away. The answer, of course, is financial. At the moment, using fossil fuels is the cheaper way of generating energy, and neither companies nor people can afford to take a more expensive option.
With that said though, things are improving in this area. Nobody likes that the price of conventional energy is rising, but that is actually good for renewable energy because it means that more people are looking for alternatives. It also helps that the price of solar energy, and other renewable sources, is coming down. Governments are also helping, with schemes such as the feed in tariff.
The feed in tariff is a financial incentive introduced by the UK government (as well as other governments around the world) which means that you get paid for energy that you produce through renewable means. For example, with solar panels on your roof. The result has been that there have been far more solar installations.
To get additional information about solar power, author Adam Roberts writes a lot more on this subject at Alternative energy sources. Learn additional information regarding how the system functions, for example how much money you’ll be able to save, and get a free quote for an installation.
Renewable Energy: Alternative Energy Sources
September 15, 2011
Without energy, nothing could be done. We need energy to do anything at all, whether that’s fly around the world or even read this sentence. The ultimate source of all energy in the solar system is solar energy, that is energy from the sun. However the main form that we use to run the economy comes from fossil fuels, which is energy that came from the sun, and got trapped in plants that then became things like coal and oil through long and complicated processes.
The Use Of Fossil Fuels
So what’s the problem with fossil fuels? Why do we have to think about alternative energy sources, why not just continue to use things like oil? Well, there are a couple of good reasons. One of them is that we can’t use it forever because it is going to run out. We use it a lot faster than it is created, meaning that it is in effect non-renewable.
Even if oil and coal could be used forever, however, we probably would not want to do that. That’s because we get the energy from them by burning them, and that releases certain substances in to the atmosphere which harmful. The one that is the biggest problem is carbon dioxide because that is what is causing global warming, which could lead to very dire consequences.
Most people understand the basic way that global warming works, but just to go over it one more time. When the heat from the sun hits the earth, most of it simply bounces off. However, some is then trapped in the atmosphere because of greenhouse gases. This is necessary to some extent, or else the planet would be too cold to live on. There are problems if there is too high a volume of greenhouse gases in the atmosphere though.
While the focus that is often put on global warming has to do with the polar ice caps melting and the sea levels rising, that is not actually the biggest issue. What should be of much greater concern is the fact that ecosystems could be disrupted around the world. If that happens, we may not be able to continue to grow enough food to feed the population.
For these reasons then, we need a clean and renewable form of energy if we are going to survive in to the future as a species. This is where alternative energy sources come in.
Alternative Energy Sources
It seems like, however, that we have already gone most of the way to solving our energy sources. After we have all sorts of alternative energy sources, from solar energy to wind energy to geothermal energy. Just about every natural process on the planet can be utilised in a way to create energy.
If we are going to avoid global warming then, we have to find a way so that renewable energy, like solar energy, could actually realistically take over from oil as the main way we get our energy. In theory it’s simple, just cover the Sahara Desert with solar panels, in fact it wouldn’t even have to be all of it to make all of the electricity that the planet would need.
In practice, if solar panels are going to be produced in large numbers then there has to be a high demand for them. This means that they have to be cheaper than oil, meaning that it’s the most efficient way to actually produce energy.
There are people who want the government to get involved so that they just order a large quantity of solar panels. However, this could have disastrous economic consequences because the money they take away through taxes is of course money that people don’t have to spend the way that they want to. This basically means that it would be very inefficient and the economy would suffer.
There is something that lots of governments have got involved in though, which is artificially creating the conditions in which solar panels are going to be more in demand. That is, they have made them a better investment by applying a feed in tariff to energy created by solar panels, meaning that you get paid for every unit of energy produced in this way.
If you would like to find out more regarding solar power, it’s possible to do so at http://www.alternativeenergysources.org.uk, which is where author James Brown writes extra information on this subject. Also go to this site should you be interested in receiving a free quote for an installation.
Sustainable Energy Harvesting and Piezoelectricity
September 13, 2011
In general, alternative energy describes energy-generating processes without the presence of negative outcomes of the burning of classic fuels, in particular substantial carbon dioxide wastes, reckoned to be a leading contributive element of climate change. Alternative energy, also called sustainable energy or renewable energy is an environmentally good strategy and will probably make use of natural conditions, like the sun or wind, to yield energy.
Economic historians have analyzed alternative energies, and they analyze such transitions as essential in causing significant monetary improvement. In the late medieval period, to provide an example, fossil fuels succeeded lumber as the major type of energy, as Europeans were running short on wood because they had become so good at deforestation.
One more illustration is with petroleum, which was formulated to replace whale oil as soon as the reduction of whale supply during the middle nineteenth century prompted whale oil prices to increase. In those days, whale oil had been the principal kind of lubrication and fuel for lamps. This new kind of oil, first marketed in Pennsylvania in 1859, gradually took the place of whale oil.
Sun and wind electric power are two other instances of energies which might subsequently take the place of standard energy sources, as our limited supply of coal and oil decline and as prices continuously multiply. The great thing related to both sun and wind electricity is that they’re both noticeably cheaper and approachable than they were before, in the 1970s. Presently, you’ll find an increasing number of organisations looking into new enhancements and functions of the wind and sun’s electric power, it’s purely a short amount of of time before experiencing more common use.
A different instance of a naturally sourced sustainable energy is piezoelectricity, which is a variety of electric power that comes from certain materials like quartz, lead or topaz that generate an electrical voltage while their crystal framework is disfigured. An example would be a piezoelectric tile, inserted beneath a fast paced street intersection, that produces electrical power when pedestrians move across it.
There are many fascinating uses of piezoelectricity, such as the piezo motor, which happens to be engineered extremely tiny but could carry nearly one thousand times its original weight. Piezoelectric materials are being used in several common products like medical goods, dslr cameras and cooktop lights, but there is a considerable amount of room for progression and even more popular engagement.
For additional information on the piezo motor, you can find a handful of articles, pictures and videos online. You can even learn to build your own. The piezoelectric effect is a fascinating phenomenon, one that we’ll likely see widespread use of in the near future.
How Solar Hot Water Systems Work
September 7, 2011
When it comes to solar energy, there are two ways that it can be used. Either to create electricity with PV solar panels, or else to heat water. That is what solar hot water systems accomplish, providing you with the hot water you need for your home.
How Solar Thermal Systems Work
The first decision you are going to have to make when you have chosen to go for solar hot water systems is what sort of solar collector you are going to want to use. That’s the name given to solar panels that are used to heat water. There are two types, the evacuated tubes and the flat panels.
The way that the flat panel is designed is that it has the solar thermal collectors running across the bottom. It collects the heat from the sun there, and then transfers it to the pipes running through it. These will either have a heat transfer substance running through them, or else the water itself.
The evacuated tubes actually work in a very similar way, but they look very different. That’s because they are made up of a series of tubes. In essence though it’s the same thing that is happening. It’s just that the collector plate runs around the circumference of the tube, on the inside of course. This has an advantage because it means whatever angle the sun is shining from, the collector plate will be a good angle for it.
As for what the best kind are, it is generally agreed that the evacuated tubes are the best ones to go for. Having said that though, although they are more efficient, they are also a bit more expensive. If you are looking for the cheapest option then, that would be the flat panels.
Choices Of Circulation Systems
Once you’ve chosen the solar collectors that you want to use, the decisions are not yet over. That’s because the water has to be circulated, so when it comes to solar hot water systems you have to decide how you want that to be done as well.
The options that are going to be available to you have to do with two aspects of the circulation. What is actually going to the solar collectors to be heated, and how the water is going to be circulated around. You can choose for the water to be heated directly, or you can have a heat transfer system in place instead. Also, you can have it all circulated by pumps (active) or though heat convection and the laws of gravity (passive).
First then, on the issue of whether the water should be heated directly or by a heat transfer system. There is actually quite a clear winner in this regard, because the heat transfer system is quite a lot better. It is more efficient, and it causes less problems when something goes wrong. If the system goes stagnant, for example, then if the water is going in to the solar collectors then it takes quite a lot of effort to get it out. That isn’t a problem when a heat transfer substance is being used.
There are pros and cons on both sides of the debate as to whether its better to use an active system or a passive system though. The major advantage when it comes to the passive system is that, with no pumps being involved, there are less moving parts, meaning that maintenance should not be necessary (or at least not as often).
The active systems have a couple of things in their favour though, and they’re pretty major. The first is that it’s more efficient to use pumps, and this is going to result in more hot water and better value for money.
Also, there is something else that goes in the favour of the active system. That is that it makes designing the system easier, there is more freedom to put the hot water tank where you want to for example. With the passive system it all has to be worked out so that gravity will do its job in getting the water moving around meaning that there will be fewer options.
If you would like to learn additional information regarding solar power, it’s possible to do so at solar hot water Systems, which is where Harrison Campbell writes more on this issue. Also visit this company if you are interested in obtaining a free quote for a solar installation.
How To Pick A Geothermal Flow Center
July 20, 2011
Heating the water for one’s home can be done in a variety of ways. Electrical heating systems, solar panel powered devices, and propane gas tanks are all different ways to do it. A different option is using a geothermal flow center, of which there are two different kinds. There are ones with water pressure and those without it.
A geothermal flow center is designed to use heat from the earth to heat up water. The water either flows or is pumped into the earth, and the natural heat sources from the magma below warm up the liquid. It is then processed into the home for use with or without pressure. This is a very energy efficient process, which can be installed in two different ways. The two different systems have their own advantages and disadvantages.
Non-pressurized loops gain several benefits. One is that the cost of installation is small in comparison to pressurized ones. It can easily be installed inside a mechanical room, and shut off valves help to prevent any blockages from occurring. If fluid needs to be added, the system is fairly easy to access and modify.
Many negative factors come with this type of design. Leaks can occur if the pipes are PVC, or if a person constantly removes the lid to check the amount of fluid inside. Dangerous materials such as methanol and antifreeze are needed for this system, and bacteria can easily grow in the relatively slow moving water. It does not appeal to the eyes well, and it has limitations as to the height the water can be processed.
Systems that are pressurized are usually more organized and neater than non-pressurized versions. Two different flow connections are used rather than three, which can lower the chances of problems occurring. A flushing device prevents damage from happening due to dirt build up, and since antifreeze and other chemicals are not needed, rick. Poisoning from these is removed.
One disadvantage of this sort of system is that the cost is much more expensive. When temperature changes occur, the pipes tend to become warped, which can lead to the system obtaining some damages and possibly stop working. This can be solved by re-pressurizing the pipes. However, if something occurs, finding it becomes more difficult since there is no interior manifold.
Different kinds of geothermal flow centers exist, and one can decide between the two main types. Those which are pressurized are expensive, but they’re less likely to have complications and have a more organized operating system. Non-pressurized versions are cheaper, but tend to get leaks more often and are more fragile. If one wishes to have an efficient water heater, considering these facts can help them decide what is right for them.
It’s time to boost your energy effectiveness by using the incredible alternative energy supply of geothermal! Geo-Hydro Supply, a leading supplier of the geothermal flow center that makes geothermal systems possible, has what you need. If you’re looking for non pressurized flow center for geothermal setup, pick Geo-Hydro Supply for outstanding service and low costs!
Geothermal Home Heating And Cooling Systems
July 19, 2011
The popularity of energy saving technologies is quickly on the rise, and geothermal heating and cooling systems are making their way to the top of the list. With a population determined to save the environment, as well as the money in their pockets, this technology is a cost and energy efficient breakthrough in substitutes for gas, oil, and electric heating and cooling systems.
These systems are currently installed in over five hundred thousand homes across the United States. The ground source heat pumps needed to operate a geothermal unit generally work anywhere in the country, and with oil prices at an extreme high, their implementation has quickly increased to over fifteen percent each year.
With steadfast advancements in energy saving technologies, these revolutionary systems use up to fifty percent less energy in comparison to traditional natural gas systems, and over seventy percent less energy than common electric heaters or air conditioners. This has allowed them to become one of the greatest energy efficient technologies in the last few decades.
Geothermal systems use ground source pumps, which means the pumps pull either cool or warm air from underneath the ground. Underground temperatures remain between forty and sixty degrees all year, no matter what month or season. This means that during months where the outside air temperature is cold, the ground temperature is warm, and when outside air is warm, the air below the ground is cool. The ground pump will extract warm air to provide the home with heat, and cold air to keep the home cool.
These systems are surprisingly simple, and do not contain very complex components. The pump transfers energy from one place to another through coils, or loops that encompass water or anti freeze solution to absorb the energy. After the liquid is cooled or heated, it is transferred through the system again. Ducts inside each room of the home allow either warm or cold air to enter. Lastly, a thermostat that connects to the pump will turn the pump either on or off to keep the house at the temperature set on the thermostat.
The word geothermal itself is defined as of or pertaining to the internal heat of the earth, meaning that this type of system does not depend on the outside air temperature. These systems also make very little noise, will last for a long time, and demand barely any maintenance. Some systems supply hot water, have dual speed compressors, and fans for additional comfort and efficiency.
Geothermal heating and cooling systems installed in homes are the smartest way to save money and conserve energy, and should be a highly considered option when choosing the most efficient way to provide the home with heat or cool air.
It’s time to supercharge your energy overall performance by using the fantastic green energy source of geothermal! Geo-Hydro Supply, a leading supplier of the flow center geothermal that makes geothermal systems possible, has what you need. If you’re looking for flow centers for geothermal setup, pick Geo-Hydro Supply for superior service and low costs!
Do You Know What Is Geothermal Energy?
July 16, 2011
If you have ever wondered what exactly is geothermal energy, then you are not alone. Many people are curious about what seems to be a reasonable alternative to current methods which are used on a regular basis. It is something which will become more important in the coming years as the ways we normally produce energy become more rare.
This has been used for a long period of time in a variety of different ways. It may be the best way that we can utilize in order to deal with the current crisis we have with energy matters which we have been faced with for man years. This might be due to the problems of how much it has grown in cost.
This is becoming far more well known and may even become even more popular due to the volatility that is associated with other sources like gas and oil. These are sadly becoming far more expensive to get gold of and we need to pollute the earth to get to them. Not only that but most countries with an abundance of them are politically volatile
There are lots of advantages the most obvious being that it’s a great deal cleaner. Not only that but once the technology has advanced to a reasonable level and the energy itself gets harnessed with greater effect then it won’t be as expensive as other forms. We can then make full sue f it with other alternatives like wave and wind power
The actual name geothermal is known to be derived from two different work which are both Greek. The first means earth and the second is translated as heat. This is very descriptive of what actually occurs in this regard as heat from the center of our earth rises up. Thermal springs happen to be powered by this very same warmth.
The heated rocks that exist miles beneath our feet has water poured over it and this leads to the production of steam which we already make use of in varied ways such as cleaning with steam. This can be converted then and it will prove useful in many contexts to give power to machinery and help houses to be heated.
It has been used an awful lot in countries which have a more advanced approach to energy consumption such as Iceland in Scandinavia. It’s used there to provide heating for houses and can help to provide most of the electricity which is needed daily.
It’s time to supercharge your energy efficiency by using the remarkable renewable energy resource of geothermal! Geo-Hydro Supply, a leading supplier of the geothermal flow center that makes geothermal systems possible, has what you need. If you’re looking for non pressurized flow center for geothermal installation, select Geo-Hydro Supply for outstanding service and low costs!
What Are The Pros And Cons Of Using Geothermal Energy?
July 15, 2011
Volcanoes are located in some areas of the world. In the Pacific Ocean, there is the ring of fire which is noted for the amount of volcanic activity present. In these areas, heat that originates from the earth’s core is found near the surface. The ground water in these areas become super hot, pressurized steam. When digging a hole in volcanic areas, hitting a steam field results in very hot gas and water literally erupting with such force high into the air. If you think hard about it, this scene is not really surprising knowing how violent and powerful a volcanic eruption is.
The name of the natural resource that refers to the heat deep below the earth is called geothermal energy. To extract this resource, engineers have to dig very deep wells that is encased in hard and corrosion resistant steel. There are special pipes that bring the very hot steam into geothermal power plants where it is used to spin turbines connected to huge electrical generators.
One of the most well known pros of the resource is its renewability. Since the resource is basically steam, rainwater that percolates into the rocks of the volcanic field renews what was extracted. You only have to look at Lardello in ltaly which is where the world’s first operating geothermal power plant is found. The steam field was first utilized in 1911 and is still producing electricity now.
Although it is hard to believe, this natural resource has one of the smallest footprints of all major ways of generating energy. Think about it. The oil we use comes from the Middle East and is shipped to our country. That’s already a very big footprint. Nuclear energy, well it has to be mined, processed and transported to nuclear power plants. That’s also a big footprint. Coal, we do not need to talk about it. It has as big a footprint than oil. Dams used for generating hydroelectric power floods thousands of acres of often pristine forest land.
The argument of geothermal power’s footprint size is based on the fact that where the resource is extracted and the power plant that uses the resource are always found in vicinity of each other. This means that the affected land area for producing geothermal power is compact therefore its impact on the environment is also small. The other methods of generating electricity are not as compact.
This natural resource do have its cons. Volcanic areas are highly mineralized. Sulphur, salt, boron, and other chemicals are dissolved in hot water. These impurities have to taken out in the steam or else it would corrode the power plant equipment. These impurities are pollutants and will contaminate the soil and flowing water.
There are two factors that are considered to be the biggest cons for this using this natural heat as a source of generating electricity and no, pollution is not one of them. One is cost. It is very expensive to dig the very deep wells that are able to reach very hot, pressurized steam. The other factor is that locations that contain zones of shallow heat are rare. But innovations in technology will one day surmount the barriers that prevent the wider utilization of geothermal energy.
It’s time to boost your energy efficiency by using the impressive alternative energy source of geothermal! Geo-Hydro Supply, a leading supplier of the flow center geothermal that makes geothermal systems possible, has what you need. If you’re looking for flow center products for geothermal installation, choose Geo-Hydro Supply for excellent service and low costs!
Little Known Tips About 60 Watt Solar Panels
June 26, 2011
The first thing that pops into people’s minds when thinking about switching their house to solar energy is the big bill. They may think having large panels sitting on their roof and a complicated electrical unit. With a high price tag of roughly $8000 for a complete system, many people won’t even think about purchasing a system.
Using power from the sun can save you a considerable amount on power bills in the long haul and has the added benefit of being a clean source of energy that will not hurt the environment. After many years, you will get back your initial investment for the panels and this is where you genuinely begin saving money because you’re essentially getting energy for free — there are no more monthly bills for electricity and you’ve paid off the initial bill for the solar panels! Obviously, if you can afford the initial investment then it’s smart to consider installing solar panels for your house’s energy, nevertheless, if you can’t afford this there is an alternative (of some form).
As an alternative, you can buy a 60 watt single solar panel. Even though this isn’t a lot of energy and won’t power your whole home, it can still save you money and provide electricity to some things. You might be able to do something including provide the energy for some energy efficient light bulbs to light up your outdoor entryway. Or how about providing power for a small icebox to keep in your room for snacks? Most people wouldn’t normally be able to afford this since it’s thought to be a luxury. Nevertheless, you are essentially getting the energy free of charge, so it won’t cost you a fortune!
There is no reason to use up all this energy. You could save on electric bill and power something like your laptop or home PC with a 60 watt system. Any appliance that consumes a small amount of energy may be powered with the solar panel system. You can’t plug in many devices to your panel in one go since it’ll be too much for it to handle, however you can connect a few things to save on your energy bill. And you don’t need to stop with simply one small panel. You might decide to get additional panels to help generate more energy for several appliances in your home.
Even though it costs from $500 to $1000 to get a small solar panel system, you can construct one yourself for a mere fraction of that. Having small solar panels can help you to save a good amount of money and be kind to the environment without requiring a sizable upfront investment.
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Natural Gas Vs Geothermal Energy: Which Is Better For Your Home? – Get The Truth
June 16, 2011
You can use different resources in order to meet your daily needs of energy. Some of these resources can be very suitable for you. In this article, we will discuss about natural gas vs geothermal energy: which is better for your home? For the further discussion, we will look at the benefits of these two resources. In this way, we could find the better one and use it according to our requirements.
Geothermal energy is the power that can be obtained from the earth. It is available in two ways. It can be obtained from inside the earth and from the surface of the earth. There is temperature of about 4000 centigrade inside the earth and it is enough for the conversion of a rock into liquid. This heat can reach to the surface of the earth in very little amount that is why we can touch the ground with ease.
If there is existence of molten rocks near the earths surface, in that case, people can obtain advantage this source. Geothermal power can be obtained from another way that is called as lands heat source. Heat of sun is transferred top the earth through sun rays fall. Due to this, temperature of earth increases. People can use this kind of heat power purpose.
Natural gas can be utilized in different ways. It can be gained from the ground. There are huge pools of this source beneath the earths surface and it can be taken out with the assist of huge equipments. It can be given to the users with the assist of pipes. Consumers can utilize them in different actions.
This source is not suitable to the environment, because it can cause the release of carbon dioxide in the air. This source is suitable than the coal and oil, still it can be dangerous due to release of greenhouse gases.
Drilling of very deep holes in the shell of land is carried out with the help of powerful machines. In this method, people can attain steam that can be employed in the operation of a turbine for power generation cause. This source is in fact suitable, as it is not risky for the air.
Natural gas vs geothermal energy: which is better for your home? is a question, which is asked by the people. After looking at the benefits of the above mentioned sources, we could be able to determine the most suitable one.
It’s time to supercharge your energy efficiency by using the awesome green energy resource of geothermal! Geo-Hydro Supply, a leading geothermal supply company that supplies the flow center products critical to add a geothermal system in your household. Wise up and get geothermal power for your home now!