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July 14, 2011
By: Admin
Category: Solar Heater
Solar Swimming Pool
Shallow water in a pond or lake tend to be more heat than the water that is in a deeper place. This occurs because the sun can warm a basic pond or lake in the area that is more shallow, and that means water that is above become hot.
With the same principle, the sun can be used as a water heater in the building and swimming pool. Most of the water heating system that uses the sun as a source of heat, consists of two main parts: the sun collectors and storage tanks. Collectors that are commonly used flat plate collectors. Collector consists of thin flat box with a transparent top cover part and facing towards the sun. Small pipes that is in the box bring liquids, which can be water or other liquids, to be heated. Pipes is paired on the black plate that serves to absorb heat from the sun. After a heat form in the collector, the liquid is in the pipes will be hot.
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June 21, 2011
By: Admin
Category: Solar Power
Solar Energy Applications
Solar energy technologies use energy from the sun to produce heat, light, hot water, electricity, and even cooling, for homes, commercial and industrial.
There are a variety of technological applications that have been developed to take advantage of solar energy. Technology can be read further below.
Photovoltaics System
Solar cells work by converting sunlight directly into electricity. The electrons in the semiconductor material, the material used to capture sunlight, will move when the sun’s energy in the form of photons hit it. Solar energy is forcing the electrons to move, occur continuously, and consequently there is also a continuous electricity production. Process, which turns sunlight (photons) into electricity (voltage), called the photovoltaic effect.
Solar Cell Module
Solar cells are usually organized into modules that each module can consist of 40 solar cells. Some modules can be arranged to form a PV line fitted with a fixed angle facing south. Or even could be placed in a sun-tracking device, to get more solar energy throughout the day. Several rows of PV could produce enough power for a house. As for industrial applications or power companies, hundreds of lines of PV can be linked to form one large PV systems and sufficient to meet the electricity needs.
Thin Film Solar Cell
Thin film solar cells use several layers of semiconductor material with a thickness in the micrometer scale. Technology allows to create solar cells integrated into rooftops to the skylights. Even solar cells are designed for applications having the same power with actual roof.
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November 15, 2009
By: Admin
Category: Solar Heater
Benefits of Solar Water Heating
The fuel needed to heat water can be reduced by solar water heaters because it capture renewable energy, the sun. Many solar water heaters use a small solar electric (photovoltaic) module to power the pump needed to circulate the heat transfer fluid through the collector. Use of these modules allows solar water heater to operate even during a power outage.
Solar water heaters can also be used for hotels and motels, car washing, swimming pools, restaurants, and others.
There are many designs for solar water heaters. But, in general consists of three main components:
1. Solar collectors, which convert solar radiation into heat.
2. Heat exchanger / pump module, which transfers heat from solar collectors into drinking water.
3. Storage tank to store solar hot water.
The most common types of solar collectors used in solar water heaters is a flat plate and evacuated tube collectors. In both cases, one or more collectors are installed on the south facing slope or roof and connected to the storage tank. When there is enough sunlight, a heat transfer fluid, such as water or glycol, is pumped through the collector. When the fluid through the collector, he is heated by the sun. Fluid which is heated and then circulated to heat exchangers, which transfer energy into the water tank.
When the owner of the home using hot water, cold water from the main water into the bottom of the solar storage tank. Solar hot water at the top of the storage tank flows into the conventional water heater and then to the faucet. If the water at the top of the solar storage tank hot enough, no further heating is required. If the solar-heated water is not too hot (because the clouds long enough), a conventional water heaters heat water until the desired temperature.
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July 08, 2009
By: Admin
Category: Solar Accessories
Flat Collector
Flat collectors, and even concentrator is a tool used to collect solar radiation energy so that thermal energy produced can be used in more practical for a variety of processes. Flat solar collector consists of a transparent cover, absorber and insulator. Solar radiation that falls on the surface of the transparent material in the short wave will be forwarded by transparent material and then absorbed by absorber. Black color have an ability to absorb a larger radiation so that most of the sun radiation will be absorbed. Absorption of this radiation will create a high temperature absorber. Heat radiation emanated by absorber but in the form of long waves. Most of the transparent material has an opaque nature of long wave radiation and therefore part of the long wave radiation reflected back by this transparent material to the absorber. Some radiation is absorbed will be reflected back and the rest will experience the same process that is part reflected back to the absorber. Thus, the loss of heat due to radiation can be minimized by flat collector. In addition, the transparent cover also functions as a heat loss barrier carried by the air above the absorber to the environment.
Heat from the absorber is used through heat exchanger to the media of heat carrier. Media of heat carrier commonly used can be air or water. When using water as the media, absorber will conduct heat to the surface of the outside pipes. Then take heat conduction from the outside surface to the inside surface. With the process of convection, heat will move from the inside surface to the water that flows in the pipes, so the water temperature will increase. Water with a high temperature and then used in the other parts of the outside collectors flat. A similar process occurs when air is used as a medium of heat, but in this case the pipe is rarely used. The air above (or below) the absorber heated through convection due to direct contact with the absorber. High temperature air is then flowed out of collectors than used in processes that require hot air.
The performance of a solar collector will depend on the absorptivity characteristics of the absorber, transmissivity of transparent material, overall heat transfer coefficient of the insulator, the transparent material and the absorber.
Absorptivity is the portion of light that is absorbed by an object; transmissivity is the portion of light that is forwarded by an object, while the overall heat transfer coefficient is a power of heat transfer or the opposite of heat resistant.
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May 20, 2009
By: Admin
Category: Solar Heater
Solar Hot Water
Executive Summary about Solar Hot Water by Anna Williams
Solar hot water heating systems are a great way to effectively conserve energy and reduce your energy bill.
Important Facts about Solar Hot Water Systems
- Solar water heaters can be used in any climate.
- The fuel used to run a solar heater is sunshine.
- A solar water heater can reduce your water heating bill by fifty to eighty percent.
- Aside from reducing your energy bill right now, a solar heating system will protect you from future energy price increases.
- When building a new home, or when refinancing, the economic aspect of this becomes even more interesting.
- Using solar power to heat your water will significantly reduce your carbon footprint.
- Solar heaters can be installed in combination with backup systems.
Types of Solar Hot Water Systems
There are two types of systems, “active solar water heating systems” and “passive solar water heating systems.” With a passive system, the water storage tank must therefore always be positioned above the solar water heater collector.
Active Solar Hot Water Systems
There is also the direct circulation system, where water is simply passed through solar heat collector and then routed to the water storage tank for use.
Passive Solar Hot Water Systems
Passive solar water heating systems are usually cheaper than “active solar water heating systems,” as they do not need controls or pumps to circulate the water.
If you live in a warm climate, a passive water heating system might be all you need. Essentially, solar water heating systems consist of a water storage tank and its solar collectors. The solar collectors are used to collect solar energy (which heats water), and the tanks store the heated water. 75% of the energy consumption of the average home is for hot water and heating. The most economical and effective way of using solar power is through the use of solar heating, and solar hot water heaters.
Homemade Solar Hot Water Heater – One of the Easiest Home Renewable Energy Systems You Could Make?
Executive Summary about Solar Hot Water by Denzil De Vries
Installing a solar hot water system is one of the easier projects to undertake if you are keen to create your own home made renewable energy systems.
The key to the solar hot water system is the solar collector. It is just a tank that has been modified to absorb thermal energy from the Sun. So it may be painted black on the external surfaces and have insulation on the internal surfaces to prevent heat loss.
The flat plate solar collector design uses the same principles but is designed to squeeze even more juice out of the Sun. The plate is painted black to again absorb solar radiation and heat. Along the plate is tubing that will hold water. The tubing exposes far more water to the heat than the ordinary old solar collector. This means more water is heated or made hotter.
Where you place your collector is vitally important but is dictated by two factors. It needs to get as much Sun as it can, so a south facing location in the home is best. But it also needs to move water to the boiler system in the home. So the nearer it is to the boiler the better. If the boiler is well located you could position the solar water collector above the boiler and let gravity move the water from boiler and back to collector based on the heat of the water.
A solar hot water system can be a simple as a solar water collector that has no moving parts or electricity to worry about and a connection to your boiler system.
Most people look into a solar hot water heater because they want to save money on their heating bills. With this in mind a solar hot water heater will help to reduce your bills by pre-heating water that goes into your traditional boiler.
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May 18, 2009
By: Admin
Category: Solar Heater
The Benefits Of A Solar Heater: Harnessing The Sun
Executive Summary about Solar Heater by Michelle Bery
A solar heater literally harnesses the energy of the sun. The sun’s core holds enormous energy in the form of radiation; the energy that reaches the earth is considered solar energy.
In the case of a solar heater, we literally “collect” the solar energy that makes its way to earth. Flat plate collectors are thin panels that trap, store, and convert solar energy. When the sun hits the flat plate collector the solar energy is contained inside and used to heat coils within the collector. Those larger structures that are using solar energy find this type of solar heater far more effective for their purposes.
Solar Water Heaters
Executive Summary about Solar Heater by Shweta Rai
Solar water heaters are extremely useful household appliance. These heaters provide ample warm water. Unlike other water heaters, these do not harm the environment. Researches too have proved that these water heaters are quite beneficial. Due to these advantages, solar water heaters are recommended every where.
How solar water heater works?:
These heaters come with storage tank and solar collector. The water is passed through the storage tank and it is heated due to sunlight. There are two pipes, which connect the solar water tank to water heater inside the house. Outlet pipe carries warm water from solar heater to standard heater. The second pipe carries the water in opposite direction. The water heater is painted black, to absorb a lot of light.
How to install these heaters?:
Consult the buyer before buying these water heaters. Make sure that these heaters are placed facing the sun.
What can be approximate cost of these heaters?
Solar water heater cost vary to a large extent.
What are major benefits of these water heaters?
These Water heaters have a number of advantages. They are environment friendly and do not cause any pollution. Secondly, they reduce your electricity expenditure to a large extent
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