Solar Roof Top Services
Solar power as it suggests from its name it is conversion of sunlight into electricity. Solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into smaller area beam. The heat which is collected is used as a source for conventional power plant. Solar energy technologies such as photovoltaic systems, concentrating solar systems, passive solar heating and lighting, solar hot water, and solar-powered heat and space cooling are all viable applications for the replacing the burning of tons of coal, reducing the effects of global climate change.
The number of PV installations on buildings connected to the electricity grid has grown in recent years. Demand is also driven by the desire of individuals or companies to obtain their electricity from a clean, non-polluting, renewable source.
In solar systems connected to the electricity grid, the PV system supplies electricity to the building and any daytime excess may be exported to the grid. However, to be independent of the grid supply, battery storage is needed to provide power at night.
Holiday or vacation homes without access to the electricity grid can use solar systems more cost-effectively than if the grid was extended to reach the location. Remote homes in sunny locations can obtain reliable electricity to meet basic needs with a simple system comprising of a PV panel, a rechargeable battery to store the energy captured during daylight hours, a regulator (or charge controller), and the necessary wiring and switches. Such systems are often called solar home systems (SHS).
On an office building, roof areas can be covered with glass PV modules, which can be semi-transparent to provide shaded light. On a factory or warehouse, large roof areas are the best location for solar modules. If the roof is flat, then arrays can be mounted using techniques that do not breach the weatherproofed roof membrane.
The vertical walls of office buildings provide several opportunities for PV incorporation, as well as sunshades or balconies incorporating a PV system. Sunshades may have the PV system mounted externally to the building, or have PV cells specially mounted between glass sheets comprising the window.
Solar energy has been the power supply choice for industrial applications, especially where power is required at remote locations. Because solar systems are highly reliable and require little maintenance, they are ideal in distant or isolated places.
Solar energy is also frequently used for transportation signaling, such as offshore navigation buoys, lighthouses, aircraft warning light structures, and increasingly in road traffic warning signals. Solar is used to power environmental monitoring equipment and corrosion protection systems for pipelines, well-heads, bridges, and other structures.
In unit where there is huge energy demand, it can be cost-effective to configure a hybrid power system that links the PV with a small diesel generator.
A Rooftop photovoltaic power station is a system which uses one or more photovoltaic panels, installed on rooftops of residential or commercial buildings, to convert sunlight into electricity. The various components in a rooftop photovoltaic power station include photovoltaic modules, mounting systems, cables, solar inverters and other electrical accessories with the benefits -
Ballasted Mount :
Some solar systems use weights (called ballasts) to hold the solar array to the roof instead of bolting it down. Ballasted systems are often preferable because they do not penetrate the roof, but only work for large system in low-wind zones.
Mechanically Attached :
Traditional rooftop systems are mounted to the posts secured in the roof beams. Special roof leak protection is added to each penetration to stop leaks. These attached systems work for any size, and hold tight even in windy areas.
Hybrid Mount :
Often referred to as a minimally attached system, the hybrid mount uses some structural attachments combined with typical ballasted design. This results in minimal roofing penetrations but a little more security where needed.
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Remote buildings, such as schools, community halls, and clinics, can benefit from solar energy. In developing regions, central power plants can provide electricity to homes via a local wired network, or act as a battery charging station where members of the community can bring batteries to be recharged.
PV systems can be used to pump water in remote areas as part of a portable water supply system. Specialized solar water pumps are designed for submersible use or to float on open water.
Large-scale desalination plants can also be PV powered using an array of PV modules with battery storage. PV systems are sometimes best configured with a small diesel generator in order to meet heavy power requirements in off-grid locations. With a small diesel generator, the PV system does not have to be sized to cope with the worst sunlight conditions during the year. The diesel generator can provide back-up power that is minimized during the sunniest part of the year by the PV system. This keeps fuel and maintenance costs low.