The Many Faces of Solar Power
Living in Nevada, the sun is a nearly constant companion. This provides Nevadans a distinct chance to utilize solar radiation powers for excellent. In April, a tour of southern Nevada homes shed some light on the subject of solar powered homes. Hosted by the American Solar Power Society, this Nevada branch of the National Solar Trip explored homes that utilized both passive and active solar energy, thermal hot water systems, and other environmentally functions. However, unless you're a green innovations expert, or took the trip, you may not understand the distinction in between passive and active solar, or how thermal hot water is various than average. Let me help you understand!
Active solar technology is the one that many people may recognize with. It involves having a solar panel that gathers the sun's energy and converts it into electrical power. These have a battery where energy is kept, so electrical power can still be used during the night, and, to a specific level, on cloudy days. Photovoltaic panel are an excellent method to make electricity, specifically in remote locations. While they are moderately pricey to set up, and do require some maintenance, they offer trustworthy and totally free electricity, even in environments far less sunny than Nevada's.
Passive solar technologies are far older than active ones, and involve using the natural heat and light the sun creates, without converting it in any other method. Have you ever saw that after a long, hot day, south-facing rocks, pavement or brick and adobe structures will radiate heat? They have spent the day passively gathering solar power, and are releasing it. Some products are better at soaking up and storing that heat than others. For instance, wood insulates, indicating it will obstruct temperatures, whereas stone will take in and release temperatures. Homes that are constructed to make the most of passive solar are typically constructed of brick, adobe or concrete. Cob is another passive-solar-friendly and ancient building product that is going through a revival of sorts. It is made from sand, clay and straw, similar ingredients as adobe, but adobe is baked into bricks and stacked, whereas cob structures are free-formed while the material is wet. Passive solar homes generally have a great deal of windows lining their south walls, and less so their east and west walls, with little to no windows on the colder north sides. These windows do two things. First, they supply natural light inside the home, one element of passive solar. Second, they enable heat to come into the home. If the home has a stone tile floor and even walls, that tile will soak up the heat, releasing it later on when the outdoors temperature level drops.
Passive solar homes can be emergency plumbing info developed to be cool in summer season while using the sun to warm them in winter. For example, if shutters are closed throughout summer season, the home will remain much cooler. Likewise, the height and angle of overhang can be considered to optimize the windows exposure to low winter season sun, however minimize exposure to the high summer sun. Alternatively, I saw an interesting example of someone planting deciduous trees on the south side of their home. In the winter, the trees had no leaves therefore allow a lot of light and heat. In the summer, their thick plant offered shade that kept your home cool.
So that is the major difference in between active and passive solar technologies. Given that passive solar is essentially complimentary, it would be wise for any architect or home designer to take it into factor to consider when constructing brand-new homes. Well designed passive solar homes can significantly reduce their electrical energy requirements. And while active solar is dazzling technology, it still takes many resources to produce. Plus, it might be unneeded in a location with an existing electrical source.
As for thermal water heating, it too is a very basic principle. Home made thermal hot water heater can be as basic as an outside water tank painted black, however that's a little crude for many tastes. Nevertheless, there are a variety of designs out there. Some have panels that are metal painted black and confined with glass, with copper pipes filled with water going through them. This water will heat up, and is then pressed by gravity into an insulated storage tank. Some solar water heaters utilize a similar set-up however with tubes filled with anti-freeze that are then hooked up to a heat transfer loop, where water in a storage tank is warmed. Whatever system you use, thermal water heating is surprisingly affective.
There are a great deal of methods to make the most of the sun and use less electrical power. Take a look at next year's National Solar Tour to see them for yourself.