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

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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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Check our Question & answer section to find out more about solar passive energy.
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Posted on Nov 27, 2015

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Passive solar energy can be used to keep buildings warm. Some buildings have large windows on the side of the building the sun hits. The sun's ray go through the windows and penetrate the heat-absorbent floors and walls. At night, this heat is released into the building.

Posted on Jul 23, 2013

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Posted on Jan 02, 2017

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Should people invest renewable energy?


While it's fairly easy to fit solar panels on your roof to generate electricity - and save money - investing in funds that hold the wind and solar firms offers more of a challenge.
It sounds like the perfect investment. Equip your house with solar panels and look forward to dramatically reduced utility bills and the potential to earn a handsome return by selling any excess energy to the electricity grid.
Thousands of people across the country have already embraced this idea since the government introduced the Feed-in Tariffs (FIT) Scheme in April 2010 to encourage the uptake of small-scale renewable and low-carbon technologies.
Greg Shreeve, the insight manager at the Energy Saving Trust, believes getting solar panels installed is a no- brainer for many people. The potential benefits to be enjoyed, he argues, more than makeup for the upfront costs.
"The technology pays for itself within 11 years and will go on generating electricity for your home," he says. "It's a great way to actually start making money when energy prices are rising. It's free electricity and low-carbon technology, so a winner all round."

Apr 02, 2017 | Computers & Internet

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Solar Air Heating - You Can Cut Utility Costs and Save Money


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.

A great solar heating system will save energy, reduce utility costs, and produce clean energy.

on Dec 12, 2009 | Heating & Cooling

1 Answer

What sources of power do you think will be used in the future?


In my opinion, the use of fossil fuel sources of energy will decrease in the near future. Meanwhile, other forms of clean energy will be cheaper and more available, like: solar, wind and hydroelectric energy.

Jan 04, 2017 | Green Living

3 Answers

Whats the best renewable energy source?


The beat renewable energy sources are those sources of energy which can be renewed easily and which is eco-friendly in nature.
Some of the best sources of renewable energy are:
1. Solar energy: The most efficient renewable energy source. The sun rays are absorbed by the solar cells on the solar panel and later it is used as electricity.
2. Wind energy: Used in turbines to make them run and generate electricity.
3. Water energy: Water has been used in hydroelectric plants to produce electricity.
4. Nuclear energy: Nuclear fission is the main source of energy today. The energy generated by this fission is used to produce electricity.

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Jan 04, 2017 | Green Living

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Can passive and active transport occur in dead cell?Explain


The definitive answer is: it depends. It depends on how the cell "died". Most forms of cell death include getting holes in the membrane, and if that happens any type of transport (active or passive) is pretty much impossible. The transport proteins might still be working, but whatever they're moving across the membrane would just leak back through the holes, so there's no transport. If there aren't holes in the membrane, then passive transport should still work. For active transport, it depends again. Usually for active transport you just need the transporter and an energy source (like ATP). As long as the energy source is still around, active transport will still go on. Chances are, though, that the dead cell isn't making more ATP as the old is used up, so pretty soon it will run out and active transport will stop. Other forms of active transport don't use ATP directly, but they still count on the cell using energy. When the cell dies, those transporters will also stop working before long.

Aug 08, 2011 | Health & Beauty

1 Answer

What is the term used to describe renewable ecologically safe sources of energy


Alternative energy generally a form or forms of energy that are not based on fossil fuels but are either renewable or sustainable without depleting a finite resource. Examples of alternative energy are Biofuel; Geothermal Energy; Solar Energy; Tidal Energy; and Wind Energy.

Oct 25, 2010 | Computers & Internet

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