Using a Solar Water Heater

When you decide to convert your main power source over to solar power you will need to make some adjustments to the appliances that carry the power source. When you use solar power to heat your water you may find that you will need to purchase a solar powered water heater in order to do that. You may be able to make adjustments to your existing one but what ever steps you take to turn it into solar power it will be worth it.

There are several different ways to heat your water using solar power. You can even make your own solar power source. The water runs through pipes before it enters your home. Heating water using solar power will occur before the water gets into your home as it passes by the solar source that attracted the light. You may also have a tank to store the water in that can heat the water up. In order to heat your water successfully you will need to have both a solar collector and a storage tank.

A flat plate collector is the most common collector. It is designed to be a thin, flat rectangular box that has a see through cover and it can carry fluid to be heated. This fluid could be the water or it may be a solution, such as antifreeze that will prevent the water from freezing. Next the water moves through the tubes to an absorber plate. This plate is painted black to attract and absorb the heat from the sun. When the collector gets hot, it will heat the fluid that passes through the tubes. As the water passes through the tubes it goes into the storage tank. The storage tank holds the heated water. It is usually well insulated so the water will stay warm longer. Then the water flows into the home on demand.

Solar water heating systems are divided into two groups: Active and passive. When the heating systems are active, that means that they rely on the pumps or other mechanical device that can move the water between the flat plate collector and the storage tank. Active is the most common because it is quicker and more efficient. The passive system relies on gravity to feed the water from the flat plate collector to the storage tank. This may be slow at times and may not be sufficient enough to keep up with the demand. Both ways are logical and may be more of a choice of preference for you. Another thought that you need to consider is that if your flat plate collector and your storage tank is not angled right it may be hard for the gravity to feed the liquid through.

Heating water using solar power is very affordable and can be installed with minimal effort. Choosing to heat your water using solar power is a wise choice and a first step in making a choice to help preserve our environment. We know how easy it is to use solar power to do a lot of things, including heating our water.

The basics on Solar energy and Solar Panels

The earth receives more than enough energy from the sun in an hour to supply the world’s energy requirement for the whole year.

Unfortunately, only a tiny portion of it is harnessed and the world still relies on power plants that burn fossil fuels. The good thing, though, is that there is a constant increase in demand for solar energy; and over the years of continuous development, solar panels are much cheaper today.

During peak hours, the maximum power density that the sun can give is about 1kW per square meter. In other words, one square meter of solar panel can produce as much as 100 GWh (gigawatt hours) of electricity in one year. That is enough to power 50,000 houses.

If a solar power plant is build on 1% of the total land area of the Sahara desert, it will satisfy the world’s energy requirement.

The efficiency of solar panels depends on several factors such as pollution, clouds, temperature and atmospheric humidity.

Solar power plants are very similar to other conventional power plants – with one significant difference: The majority of power plants draw their power from fossil fuels like oil, coal and gas.

When power plants burn fossil fuels, they produce greenhouse gases that contribute to global warming. Solar power plants or solar thermal power plants (or Concentrating Solar Power plants) utilize the power of the sun’s rays to generate electricity.

The process could not be any simpler. The solar panels receive heat from the sun, which will be reflected to the receiver. The receiver converts into steam the concentrated solar energy. The steam is stored on tanks which will be used to turn the turbines and generate electricity.

The whole process does not involve any burning of any fossil fuels. Thus, solar power plants do not contribute to global warming.

The increase in the use of solar energy will bring down the demand for oil.

Today, there are more than 10,000 households with solar energy systems and the number is constantly increasing. If the demand for solar energy as well as other forms of alternative energy, the demand for oil will drop and the cost fuel will likely to follow.

Residential solar energy system can turn your electric meter backwards. Given that you are connected on a power-grid, the excess energy that your solar energy system produces will go to the electric lines to be used by other homes. As a result, any excess energy you give will be reflected on your bills. Your electric supplier will even pay for the electricity you supplied.

Residential solar energy system can save you money.

While the initial cash out for installing solar energy system at home is big, the device will pay for itself in the long run. Not only you will save money on solar energy system, you also help the environment by not contributing to carbon emissions.

Solar energy systems are reliable and can last for a very long time.

PV cells are last from 25 to 40 years. Many manufacturers of solar panels give 25 years product warranty. This is the assurance that solar panels are very dependable.

In addition, solar panels require little or no maintenance and the can be installed on most places where there is sunlight throughout the year.

What Do Solar Panels Do? How Do They Work?

What is PV solar power? You have heard the term, but you are unsure as to its meaning. You are vaguely aware that solar power has something to do with making energy from sunlight. But what is PV solar power? Is it different from other kinds of solar power?

PV solar power is different from other types. Of the two main categories of solar power, active and passive, PV solar power is active. Let's look at it.

Solar Panel

Active solar power relies on solar panels. You may picture them as flat, rectangular boxes on rooftops.

There are two main types of solar panel. From a distance, both look like rectangular boxes. Both convert sunlight into energy, but in two different ways. The terms for the two solar panel types are solar thermal collector and photovoltaic module.

1. Solar thermal collector: This solar panel takes in solar energy from the sun and uses it to heat air or water.

2. Photovoltaic module: This second type of solar panel collects solar energy and converts it to usable electricity.

Meet the PV

To answer the question, what is PV solar power, we must know what the PV is. The short answer is that PV refers to a photovoltaic module. "P" is for photo and "V" for voltaic.

The Merriam-Webster Online Dictionary defines "photovoltaic" this way.

"of, relating to, or utilizing the generation of a voltage when radiant energy falls on the boundary between dissimilar substances."

In simpler terms, "photo" refers to sunlight and "voltaic" refers to electrical energy. PV panels convert sunlight into electrical energy. Sunlight flows into the solar panel. Electrical energy flows out of the solar panel.

A PV solar panel is made up of many photovoltaic (light to volts) cells. These cells are electrically connected, and then covered with glass. The glass provides electrical insulation. It is also good protection from weather and other damaging forces.

When minimal energy is needed, such as that necessary to power a small appliance, a single PV solar panel is sufficient. When more power is needed, an "array" of solar panels is created by connecting panels to one another. If the power will not be supplied to the power grid, the solar panel(s) is connected to a charge controller, and battery. If it is intended for on-grid use, the solar panel array will be connected to an electrical inverter.

What Is PV Solar Power?

PV solar power is solar energy in the form of sunlight, which has been collected by a photovoltaic module, and converted into usable electricity.

Conventional silicon solar panels convert about 14 to 17 percent of sunlight into usable electricity. That isn't much. Late in 2006, however, a new solar cell was introduced. Solar panels that utilize the new cell can convert into electricity 22 percent of the sunlight they collect. Theoretically, the maximum that the cells of a solar panel can convert is said to be around 26 to 27 percent of incoming sunlight.

How does it work? Let's look at a very simple explanation.

Each photovoltaic cell in a PV solar panel is a semiconductor. When sunlight hits those cells, a certain part of the sunlight is absorbed by those silicon cells. The cells take in that part of the sunlight's energy. The cells then transfer the absorbed sunlight's energy to the electrons in the silicon. The electrons begin to flow, and this creates an electrical current. Metal contacts built into the top and bottom of the PV cells draw off that current and it is sent to the grid or battery. It is now usable electricity. The power grid sends it on its way, if you have used an on-grid connection. If you are using a battery, it is stored in the battery awaiting your need.

PV solar power is being used increasingly with great success, and while it is true that cloud cover can affect it, the cloudy country of Germany leads the world in successful use of solar panels.