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Solar Products

WHY SHOULD I OPT FOR A SOLAR POWERED SYSTEM?

It is a universally acknowledged fact that the consumption of energy is increasing enormously and the resources to produce energy is limited and is not adequate. Fossil Fuels like Oil, Gas, Coal etc are diminishing and within a short period they will be exhausted. The time has come think about alternate sources of energy that don't pollute the environment and the search ends with Renewable Energy Resources.

Renewable energy resources come from the sun, wind, oceans, rivers and plants. They are the oldest, cleanest and in most cases efficient forms of energy man has at his disposal. Unlike fossil fuels, such as oil and coal, these never run out and will not pollute the environment.

Right now, only 8 percent of our total energy use comes from renewable energy resources. The other 92 percent are primarily made up of fossil and nuclear fuel sources. Fossil fuels have had damaging effects on the quality of our air, water and soil. In order for people to continue to live healthy lives we must increase the use of renewable energy sources.

The three most common natural renewable energy resources are SUN, WIND and WATER. The first and most important renewable energy is solar energy.

SUN energy consists of Light and Heat.  Solar Photovoltaic systems will use the light energy to produce electricity and in tern meet the load demands whereas Solar Thermal systems will use Heat energy to increase the temperature of water stored in an insulated tank to the desired level for meeting the demand of the User.

ABOUT PHOTOVOLTAIC:

Photovoltaics are solid-state semi-conductor devices that convert light energy into electricity. They are usually made of silicon with traces of other elements.

A Photovoltaic device or Solar cell consists of layers of semiconductor materials with different electronic properties. Light consists of particles called Photons. When light hits the Solar cell, some of the photons are absorbed by the Solar cell and the absorbed energy is converted into DC energy.

The Photovoltaic process is completely solid state and self-contained. There is no moving part and no material is consumed or emitted. Virtually any electric power-need can be met by an appropriately designed PV power system. This includes power for lighting, pumping, telecommunications etc. The only limitation is the cost and the occasional limitations the area for the installation of PV modules.

ABOUT PV MODULE:

The Components of a PV module are:

  1. Solar Cell : Multi-crystalline or Mono-crystalline cells having typical cell-efficiency of > 13%.
  2. Encapsulation : Ethyl Vinyl Acetate (EVA).
  3. Glass : Toughened high-transmission (>92%) glass.
  4. Frame : Anodized Aluminum.
  5. Frame seal : Silicon sealant / Butyl rubber.
  6. Back surface : Tedlar / polyester / Tedlar.
PV modules are rated at a well-defined set of conditions known as Standard test Conditions (STC). These conditions correspond to an Irradiance at the module of 1,000 W / sq.m with spectrum of 1.5 and at cell temperature of 25° Centigrade.



Temperature effects:

The following temperature correction co-efficient should be applied to STC data to predict PV module performance at field conditions.
  1. Peak Power - 0.5% / deg. Centigrade.
  2. Open Circuit voltage - 0.4% / deg. Centigrade.
  3. Short circuit current + 0.1% / deg. Centigrade.
Solar modules, the most reliable and environment friendly power generating device from sunlight, are available in both Mono-crystalline and Multi-crystalline cells. The modules comply with International standards i.e. as per the IEC 61215 specifications. The Solar modules are designed to withstand toughest environment conditions and for long service life. The Solar modules are covered by a 10-year warranty on Power output.

Ultra clear tempered glass provides excellent light transmission and protects from wind and impact. Torsion and corrosion resistant anodized Aluminium module frame ensures dependable performance, even in tough harsh weather conditions and in marine conditions.

PV systems produce power in all types of weather. On partly cloudy days they can produce up to 80% of their potential energy delivery, on hazy humid days about 50% and on extremely overcast days still it can produce 30% of rated energy.

In general, the PV modules are the longest-lived component of a PV system. These modules are designed to last at least 30 years and carry a power warranty of 20 years. They are designed to withstand all of the rigors of the environment including arctic cold, desert heat, tropical humidity, winds min excess of 125 mph and 1 inch hail at terminal velocity. These modules use a glass as a substrate. This is low iron tempered glass and is laminated with layers of plastic. This construction is very durable but given a strong enough impact, it will break.

A single framed Solar PV module is ranging from 5Wp to 100Wp and hence the PV array is flexible and can be designed to meet specific load demand.
 
 

 


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