Archive for the ‘solar energy’ category

Solar Panels Facts

September 8th, 2010

Solar Panels are in the news with many conflicting claims, so listed here is a dose of reality with my ten top facts for Solar Electric Panels

1. Solar Panels are made by mounting solar cells on a backing plate. Some panels are rigid and can be roof mounted while others are flexible and can be rolled up and put into a rucksack

2. Solar Cells are usually made from silica which comes from sand

3. Solar cells are small semiconductors which produce a small voltage and electric current when light shines on them

4. Solar Panels are getting cheaper now. With so much pressure from climate change concerns lots of technological effort is going into producing more cheaply.

5. Solar Panels are also getting more affordable due to central government grants and perhaps local grants too

6. Solar panels are gaining in efficiency in extreme measures. Wikipedia has it that the first solar cell was only 1% efficient and commercial cells are commonly 20% efficient. Breaking news would be that the latest experimental cells in a laboratory setting are 45% efficient. These cells hold a promise of smaller cheaper panels with even cheaper electric power.

7. Do-it-yourself enthusiasts are also building their own panels. The main skill needed for this sort of D.I.Y. project is soldering. You need this skill because the panels consist of, for example, 24 solar cells hooked up electrically and with leads soldered onto each cell. And in order to connect to your residence electric circuits even a keen D.I.Y. enthusiast would be recommended to call in a qualified electrician experienced in home solar energy to check what they’re doing!

8. The price of a factory made solar panel varies widely with its size and construction. It could be in the $800 to $1200 range and the home would need perhaps a dozen of these or more. You will see why the DIY market exists with prices like these!

9. It’s correct that electric utility companies may buy solar electricity out of your home should you be generating more than you are using but not all utilities do this, so check beforehand if this sounds like one of the goals

10. A solar survey done by an experienced solar installer will help you and advice on the position and direction of your panels. The panels need to face the sun and in the northern hemisphere they will face South but shade from trees and chimneys may mean that an installation is not practical on that roof. Some people solve that problem by mounting their panels on poles or frames well away from their home.

Solar energy is over a hundred years old and is now developing very fast. It is well worth checking to see if it can assist you reduce both your impact on the environment your living costs.

Get solar energy home tips and advice here for free. Offers a single source on solar energy panel related issues, topics and guide.

Considerations When You Wish To Learn How To Make Bio Diesel On Your Own

September 8th, 2010

Although bio diesel production has gained huge popularity only recently, it is not a new idea. The idea was present when the first diesel engine was developed since peanut oil was used to fire the first compression-ignition engine.This should not be forgotten when one wants to learn how to make bio diesel.

Bio diesel therefore refers to the non-petroleum-based fuel made from animal or vegetable fat. This fuel is usually mixed with ordinary diesel or used alone with an ordinary diesel engine. As such it is a viable alternative fuel source especially with the increase in fossil fuel prices.

Making bio diesel is not a very difficult process. This makes it possible to learn the skill from different sources. There is a wide selection of materials that can be used in producing this product. These include feedstock and oils such as soybean or rapeseed oil. Bio diesel can also be extracted from vegetable oils especially from hotels. Animal fats such as chicken fat lard and tallow. In some cases, algae is also used but not for commercial production.

If you intend to learn how to make bio diesel, you should identify your source first as the process varies with different materials. In some cases you also require specialized equipment referred to as bio diesel processors while in other cases, these are not necessary. A good example when you do not require specialized equipment is making bio diesel from used cooking oil using sodium hydroxide and methanol. However, this method produces very little amounts.

Once you have established the source the next step is usually testing it for properties such as water content and acidity. This is usually important as it helps determine the state of your end product. The level of acidity and water determine whether the resultant bio diesel will be perfect.

The best oil sources, which will make the process easier, are those with relatively low water and acidic content. This necessitates the need to learn how to test the oil using different methods such as heating or using a water testing kit. Acidity is tested by adding the oil to a pH neutral alcohol, a process called titration.

Another major step when making bio diesel is filtration. This is done when using used vegetable oil and helps remove food particles and any other contaminants. Filtering is done mostly with drum filters which are very effective. You should learn about micron rating as it will help you select the most effective filter. The smaller the rating number, the smaller the holes in the filter will be.

Finally, before one can start full production of bio diesel, it is important to have a test batch. This can be prepared from materials purchased from the local shops. This is also the time you will make a final decision regarding the production equipment. Normally these include collection containers, bio diesel processor, oil filter and transfer capability and bio diesel washing vessel.

Storage containers and titration kits are also important. Normally, the intended capacity of production determines the equipment to be purchased. Collection of all these should prepare you to learn how to make bio diesel.

Find those several choices for renewable energy by going online. One choice you have will be biodiesel. To learn more about it head online now to learn those benefits.

Incoming search terms for the article:

20 Watt Solar Panel: Build Your Own And Save Big On Energy Bills

September 7th, 2010

A 20 watt solar panel system installed at your home can save you a lot on energy bills. And with today’s economy, every little bit helps. And in the process you are helping to save the environment.

You will help protect the environment by using the suns abundant energy to generate part of your electrical usage. More and more people are discovering that using a 20 watt solar panel system is a great way to make electrical energy and help the environment at the same time.

Every hour enough sun hits the earths surface that if captured could supply the US’s power needs for an entire year! This is how you can start to take advantage of all this abundant free energy, by setting up and using your own 20 watt solar panel units.

You will notice changes to the first power bill you receive after installing a 20 watt solar panel power system. The less electricity you have to buy, the less your bill will be. Its as simple as that.

You can scale up a 20 watt solar panel unit as time goes on by adding more panels. There are houses that generate so much electrical power that they are able to give it back to the electrical grid, and in return receive a check from the power company each month. Pretty amazing isn’t it? They actually make what are called “smart meters” which power companies will install, for free, on your house to measure the outflow of electricity to know how much to pay you.

This is why a lot of people want to start investing into one of these 20 watt solar panel energy systems! You can now be free from non renewable power sources. You have the freedom to own and use your own solar power system as you see fit and not worry about disrupting power outages. Besides all this, you are doing your share against global warming, reducing your carbon footprint and even may be eligible for the green energy tax incentive.

In fact in some countries such as America, you may receive rebates, grant money, and tax reductions through implementing solar energy solutions in your home or business. And if you think about it, when is most people’s power consumption the greatest? During the summer, which is ironically when you receive the most benefit from your 20 watt solar panel system. Like I stated previously, it is also possible to “sell back” power into the grid. Imagine that, you receive money from electric companies for simply installing a 20 watt solar panel system!

Learn more about the 20 watt solar panel. Stop by Steven Swihart’s site where you can find out all about making your own solar panels and how they will benefit you.