Archive for June, 2009

Solar Generator

June 25th, 2009 Grace 3 comments

bullis_071406_solar_collectorsA solar generator can benefit the home in a variety of ways. Depending on the size, it can allow a homeowner and family to remain unaffected in the event of a power failure. It can also be used to simply cut the costs of daily energy use.

In very simplified terms, a solar generator works by converting solar energy into electrical energy. This energy can then be used to do such things as power lighting, heat water, and run the TV. The generator consists of solar panels (which must be placed where they will receive the most possible sunlight,) a deep cycle battery for continuous use, and an inverter.

The inverter is necessary to convert the DC power stored in the battery into AC power. Determining the appropriate strength of an inverter for a solar power system is a fairly simple task to accomplish. First, add up the wattages of all of the appliances the solar generator is intended to power. Then, purchase an inverter that is slightly more powerful.

Of course, if the generator is only going to be used to run DC appliances, there is no need for an inverter. A DC meter and DC input will suffice. It is also possible to buy a ready-made solar generator, one complete with all the necessary components.

Many solar generators are capable of lasting a lifetime. Most are easy to install and easy to use. They are often ideal for usage in remote locations such as a winter home in the desert or a cabin up in the woods.If you intent to buy solar generators,I recommend a good station, cheap and high quality:Made-in-china.

How to Make a Solar Power Generator ? Follow me:

1.Buy (or make) yourself a small solar panel. You should be able to get one rated at 12 volts or better (look for 16 volts) at an RV or marine supplies store .

2.Buy yourself a battery.Get any size deep cycle 12 volt lead/acid or gel battery. We recommend rechargeable batteries from these green companies: Greenbatteries Store and You need the deep cycle battery for continuous use. The kind in your car is a cranking battery–just for starting an engine.

3. Get a battery box to put it in.This is good for covering up the exposed terminals in case there are children about If you going to install the system in a pump shed, cabin, or boat, skip this.

4. Buy a DC input.This is enough to power DC appliances, and there are many commercially available, like fans, one-pint water boilers, lights, hair dryers, baby bottle warmers, and vacuum cleaners. Many cassette players, answering machines, and other electrical appliances are DC already and with the right cable will run straight off the box.

5. But if you want to run AC appliances, you will have to invest in an inverter. This will convert the stored DC power in the battery into AC power for most of your household appliances.Count up the number of watts you’ll be using (e.g., a small color television(=60 watts) with a VCR(=22 watts), you’ll need 82 watts.

6. Use a drill to attach the meter and DC input to the top of the box.

7. Use insulated wire to attach the meter to the wingnut terminals on the battery. Connect the negative (-) pole first. Only handle one wire at a time. Connect the DC inlet to the battery in the same way. Connect the solar panel to the battery in the same way.

8. Close the lid (I use a bungee cord to keep it tight). Put the solar panel in the sun. It takes 5-8 hours to charge a dead battery; 1-3 hours to top off a weak one. It will run radios, fans, and small wattage lights all night, or give you about 5 hours of continuous use at 115 volt AC, or about an hour boiling water. This system may be added on to with larger panels, inverters, and batteries.

Options: A pop-up circuit breaker may be added between the positive treminal and the volt meter. Some of you will want an ampmeter as well. The panels I recommend have built-in bypass diodes, but I recommend charge controllers for people who have panels without diodes. Another option is a voltage regulator, which is not necessary for a system this small, but a larger system would require one.

Introduction to the Diesel Generator

June 10th, 2009 Grace 11 comments

Most people know that diesel engines in automobiles provide higher mileage, making it an obvious choice for heavy-duty transportation and equipment. Diesel is priced heavily when compared to gas, because it has a higher energy density and more energy can be extracted from diesel when compared to the same volume of gas. Diesel fuel has heavier, oilier and has a higher boiling point when compared to gas. When you compare petrol, gas and other fuels, diesel is least flammable. When compared to gas generators, this generator requires less maintenance. Being rugged and reliable, it can work for long hours at a stretch. Modern diesel generators can overcome noise issues. Onsite fuel delivery is available. These generators are used in many industries like mining, telecommunications, marine and agriculture applications, hospitals, industrial plants and commercial buildings. Although they are built for large loads, modern diesel generator is designed to comfortably handle small loads without wet stacking. These are available in single phase and there phase power generators.images


You can find different types of diesel generators in the market. Small portable diesel generators range from 1kva to 10kva, while larger industrial generators range from 8kva -30kva for homes, small shops & offices up to 2000kva used for large office complexes, factories and power stations.


The typical diesel generator is run at 1800RPM and is water cooled. This makes them great work horses as they are able to run for longer periods of time when compared to the gasoline generator and without much maintenance work required. They are also cheaper to operate due to the low fuels costs as compared to the other types of fuels such as gasoline and propane as well as the lowered maintenance costs due to there being no spark plugs and carburetors.


The diesel generator operation is similar to that of the diesel engine. There are two types of diesel engines. The 2-stroke and the 4-stroke operation are the two types. The 4-stroke operation is the one that is typically used in diesel generators. This process as the name implies uses four strokes.


The first stroke is the power stroke where a fine mist of diesel is sprayed on top of the piston in the hot compressed air space. The fuel is then ignited and the air on top of the piston expands. This pressure then causes the piston to move down and this motion is converted to a rotary motion by a rod that drives the crankshaft.


The next stroke is the exhaust stroke which is initiated by the momentum of the crankshaft turning and the piston then moves up. The next stroke is the suction stroke and this is when the piston reaches the top and the momentum continues so that the piston reverses in direction. The piston then moves down and the compression stroke is next where the direction of the piston is again changed after the lowest point. This cycle continues for the operation of the diesel generator.


Although the diesel generator is by far the cheaper generator overall it can cost a lot more to set up initially and this can be a deterrent to many generator users. The generators are also not as clean burning as the other fuel generators although this has improved much in recent times. The diesel generators may also require a larger store of fuel but this is much safer to store than gasoline. Another disadvantage of the diesel generator is that it can be a lot more noisy compared to their counterparts.


Many persons however believe that the savings that can be derived from an investment in the diesel generator are indeed well worth the disadvantages. The savings in fuel and maintenance are immense and the hassle free maintenance is a great plus. This is the reason many commercial generator users opt for the diesel generator. Diesel generators are available in mainly larger designs but can also be found on occasion in smaller units.






Introduction to Wind Generator

June 4th, 2009 Grace 13 comments

 A wind power generator is a machine that uses wind energy to produce electrical energy. It captures the winds power and converts it into mechanical energy that rotates the blades of a motor to produce electrical energy. Wind generators help produce thousands of megawatts of electricity. They are also a very popular power solution for individual farms. They are perfect for large areas with good wind speed.f0pe5sktqqep27tq3m_medium


Wind generators have been in use for a long time in the form of windmills or wind turbines. Years ago, when electricity was not invented, wind turbines were used to pull boats and pump out water.Surprisingly the first use of the wind machines was for grinding grains as early as 200 B.C in Persia. It was also introduced in the prosperous and powerful Roman Empire in 250 A.D. The year 1900 saw the maximum number of windmills being used in Denmark. Almost 2500 windmills were installed to provide the much needed mechanical load to pumps and gave a peak power of 30MW.


Even now, the terms, wind generator, windmill, and wind turbine are used to refer to the same device.


What are the advantages of using a wind generator? The advantages of a wind generator are many. Let’s look at a few of them.


Environment-friendly: Wind power generators prove to be environment-friendly in two ways:


They do not emit harmful gases in the atmosphere nor do they leave any harmful residual component.


They do not use any fuel to produce electricity, hence helping the cause of the environment.


Power-saver: Wind generators are an alternative power solution. They do not use any non-renewable sources of energy, thus helping in times of energy crisis.


Economical: Though the initial cost of setting up a wind generator seems high, the cost of generating electricity in the long run becomes nil. So basically, you will be getting electricity absolutely free after a few years.


Independent option: Wind generators do away with the dependence on power plants and the government for electricity. With a wind generator in your land, you have your own power plant for life.


24/7 power: With wind generators, you can say bye to power outages forever. You will get continuous, uninterrupted power supply for your entire house and land.


Power storage: A wind generator also allows you to store power for use later. This feature makes it an amazingly lucrative power solution.


With more and more fuels getting wasted and used, there are very few options remaining. Bio-fuel is one of the options and to add to it is the use of solar panels for driving motors and making electricity. The third option is harnessing the wind power. So build a wind generator today and do something good for your home and for our environment.