Grid-tied
Solar Electric Systems, also known as on-grid, grid-connected, or
grid-intertied photovoltaic systems, generate electricity for your home
or business and route the excess power into the electric utility grid.
Monday, September 30, 2013
Off-Grid Solar-Electric Systems
Although
they are most common in remote localities without utility grid service,
off-grid solar-electric systems can work anywhere. These systems operate
independently from the grid to provide all of a household’s
electricity. That means no electric bills and no blackouts—at least none
caused by grid failures. People choose to live off-grid for a variety
of reasons, including the prohibitive cost of bringing utility lines to
remote home sites, the appeal of an independent lifestyle, or the general
reliability a solar-electric system provides. Those who choose to live
off-grid often need to make adjustments to when and how they use
electricity, so they can live within the limitations of the system’s
design. This doesn’t necessarily imply doing without, but rather is a
shift to a more conscientious use of electricity.
How does SS (Solar System Works) ?
Solar
panels convert solar energy (sunlight) directly to
electricity. The electricity is stored in solar batteries and used to
power home appliances in rural and remote location.
Requirements for a Solar System
Following are needed for a solar system.
1. Solar Panel
2. Solar Charge Controller
3. Battery
4. DC Lights
These are things that you must have to turn your lights on. Without them it is impossible to power up lights. Solar system works in this order. Solar Panel is giving current to charge controller. Charge controller charges a battery. And lights are powered up by a battery. In this case it is DC lights.
1. Solar Panel
2. Solar Charge Controller
3. Battery
4. DC Lights
These are things that you must have to turn your lights on. Without them it is impossible to power up lights. Solar system works in this order. Solar Panel is giving current to charge controller. Charge controller charges a battery. And lights are powered up by a battery. In this case it is DC lights.
Wednesday, September 25, 2013
PHOTON
The actual (physical) particle unit of light, as the electron is of
electric charge and the atom and molecule are of matter. Light has both
wave properties and particle properties. Violet light has relatively
short wavelength and higher energy in its photons; red light has longer
wavelength, lower-energy photons. The wavelength and/or energy spectrum
of the sun extends in both directions beyond the visible range of light,
of course, and the silicon module solar cell can capture some energy in
both of these invisible zones. Photons not captured by the cell are
either reflected or converted to heat in the solar array.
Photovoltaic (PV)
Photovoltaic cells are made of parallel clusters of semiconductor
materials such as silicon. Although silicon has been by far the most commonly used material, basically because of its abundance (it's the
second most available element in the Earth's crust), it takes a lot of
effort to generate a quality and efficient PV cell and until recently the cost
for PV arrays restricted most people from using it.
Today those costs have come down considerably and are further diminished by the abundance of federal, state, and local tax credits, reliefs and other monetary incentives to make installing a solar energy system a viable and cost effective energy alternative. The future looks brighter and clearer still as scientists continue to explore different ways to create other non-silicon based photovoltaic panels with the hope of eventually producing solar cells at about one-tenth the cost of silicon based products.
Today those costs have come down considerably and are further diminished by the abundance of federal, state, and local tax credits, reliefs and other monetary incentives to make installing a solar energy system a viable and cost effective energy alternative. The future looks brighter and clearer still as scientists continue to explore different ways to create other non-silicon based photovoltaic panels with the hope of eventually producing solar cells at about one-tenth the cost of silicon based products.
Kilowatt-hour
A common unit of electric power consumption. One kilowatt-hour equals
1000 watt-hours and can be used to define the amount of energy used
over a one-hour period. For example, a 60-watt incandescent light bulb
turned on for one hour would use 60 watt-hours of energy.
A side note: Interestingly, a 19-watt compact fluorescent bulb (CFL) packs the equivalent amount of output as a 60-watt incandescent, but saves 68% of the comparable energy. There are two reasons for this: (1) 75% of the energy incandescent light bulbs use ends up as heat, only 25% gives off light; (2) CFLs last 10 times longer than incandescents and save $30 or more in energy bills over their lifetime. So use CFL bulbs wherever possible to cool down the planet too.
A side note: Interestingly, a 19-watt compact fluorescent bulb (CFL) packs the equivalent amount of output as a 60-watt incandescent, but saves 68% of the comparable energy. There are two reasons for this: (1) 75% of the energy incandescent light bulbs use ends up as heat, only 25% gives off light; (2) CFLs last 10 times longer than incandescents and save $30 or more in energy bills over their lifetime. So use CFL bulbs wherever possible to cool down the planet too.
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