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What is the difference between and what is photovoltiac versus solar energy

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  • Greg Scott
    Greg Scott Dec 27, 2017

    The principle behind both are relatively the same; both absorb raw energy from the sun and use it to create usable every. Solar systems create electricity whereas photovoltaic (PV) systems are used directly for heating water or air.

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Solar energy is the output from our sun though not strictly correct it is sufficient for most purposes to say it is the sun's energy that reaches Earth. It includes a wide spectrum of different frequencies/temperatures of light and energy and various types of particle and electromagnetic radiation, a significant proportion of much of the content is deflected by the Earth's magnetic field and various layers of the atmosphere.

The solar energy reaching the Earth's surface is reckoned to average the warming equivalent of 3kW/hr per square metre.

Photovoltaic (PV) is a process that converts the Sun's heat/light into electricity and should not be confused with the Solar/thermal systems designed to use the sun's heat/light radiation to heat water. Mostly this is used for domestic purposes but some large installations exist where large mirrors concentrate light onto a solar panel with enough heat to produce sufficient steam to drive a turbine/generator to produce electricity.

Photosynthesis, incidentally, is the method plants use to convert atmospheric CO2 into growth using energy from the sun.

Posted on Dec 27, 2017

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SOURCE: What's an example of a passive form of solar energy?

passive solar energy capture include using stone flooring and walls with thick insulation to keep the energy in buildings. With carefully placed windows and other architectural techniques, passive solar energy systems can be an effective way to heat buildings. If you are looking for solar kits South Africa has many choices to choose from but the best solar inverters South Africa has can be found at Ayatrading. http://www.ayatrading.co.za/

Posted on Feb 18, 2016

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Solar energy is becoming very quickly recognized as one of the best alternatives to fossil fuels It is an abundant and renewable natural resource. It can be used to save energy in residential, commercial, and industrial settings. Solar technologies will use the sun's energy to provide heat, hot water, light, electricity, and cooling, for homes, businesses, and industry.

Many major advancements have been made in the solar technology fields over the recent years. Solar air heating is becoming more attractive than ever before now that it is becoming lower in cost and more efficient. Solar energy is easily the cleanest and most inexhaustible of any of the known energy sources. The many variations in energy prices have fueled interest in alternative fuels such as solar energy. Demand for solar energy has been increasing exponentially as heating, cooling and many other energy costs continue to skyrocket.

Solar air heating and solar water heating are two examples of solar thermal technologies which produce heat, but not electricity. Solar air heat is best suited for installation in new construction and existing houses. Solar panels for any type of heating should be placed on a south-facing pitched roof, free of shade. The angle should be between 20 and 50 degrees. They may also be mounted on an angled frame on the ground or on a flat roof. Solar air collectors (the devices that heat up the air using solar energy) can directly heat individual rooms. They also can potentially pre-heat the air passing into a heat recovery ventilator or the air of an air-source heat pump. Solar heating panels can be one of the most cost effective ways to reduce your utility bills. This will make a positive contribution towards a better environment. Solar air heating systems often use large bins filled with rocks that store heat (although this method is becoming rare due to problems associated with controlling moisture and mold growth in the rock).

Energy Policy Act has implemented a 30% tax credit for consumers who chose to install solar water heating systems. State and local government programs are now being put in place to encourage the use of solar energy. Cash incentives are available for those that integrate solar energy technology as an alternative energy source. The Department of Energy (DOE) is working to design even more cost-effective solar heating systems and to improve the longevity of the materials used in those systems. Other incentive programs now include offering homeowners tax credits for solar panel installations and for solar heating systems. With solar power you will save money, increase your property value, help protect the environment and help to create a more secure America by reducing our dependence on foreign energy fuel sources.

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