sunlight for night-lamp

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    Capture Sunlight for a night LampIt needs an initial investment; So What?

    Find a way to meet that too.

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    LIGHT TO ELECTRICITY

    SYSTEM FOR DIRECT CONVERSION,

    STORAGE AND SUPPLY

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    SPV Lighting Systems

    SPV lighting systems are becoming popular in both the

    rural and urban areas of the country. In rural areas, SPV lighting systems are being used in

    the form of portable lanterns, home-lighting systems

    with one or more fixed lamps, and street-lighting

    systems.Applications in urban areas include

    glow-sign display systems on the streets,

    traffic signaling, message display systems

    based on light-emitting diodes (LEDs), and

    systems to illuminate advertisement hoardings.

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    In many rural parts of India there is either no

    access to grid electricity or the supply isunreliable with frequent power cuts. Alternatives

    such as candles, kerosene and oil lamps

    provide lighting, whilst small dry cells and

    automotive batteries provide power for radios,

    televisions, but these are low quality,cumbersome, expensive and often dangerous.

    Now Solar PV system serves this purpose. 4

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    In India a solar energy company has developed

    a wide range of solar-powered equipment,

    installations and after-care support for lighting,

    water pumping and purification, TV and radio.

    In 2005 the success of this business was

    recognised internationally when it won the

    Ashden Award for Enterprise.

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    A typical kit consists of a 35-watt panel, four 7W

    compact fluorescent lights and a lead-acid battery that

    can store sufficient energy for the system to work both

    day and night throughout the year. The batteries are

    designed to withstand significant discharge each day

    without rapid deterioration. (Cheaper car batteries

    cannot withstand this, and would become unusable

    within about six months.) An electronic charge controllerprotects the battery from charging or discharging too

    much, and enables the battery to be used for at least

    five years.

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    Emphasis is placed on designing Solar Home/

    Business System to meet consumers' needs andbudgets whether it be for home or business.

    Depending on their requirements the system can

    be used for inexpensive lighting, water pumping,

    water heating, communications, computing, and

    entertainment.The installation of the system is carried out by the

    companys technicians.

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    One innovative idea to make systems affordable is

    to place a light in the corner of one room andremove bricks into other rooms, so that a single

    light provides background illumination in three

    rooms. Another feature that allows flexibility at low

    cost is having lights that can be moved from one

    place to another. These solar systems reducedependence on other forms of energy and are

    more reliable, affordable, and safer to use.

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    Support Services

    The solar system company understands that it

    needs to provide not only reliable solar systems

    to customers, but also to back this up with

    information, installation,

    training and

    finance

    to develop a sustainable sales and service

    infrastructure.

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    The photovoltaic system structures

    Systems with fixed inclination - (fixed supporting

    structure)

    Systems with active tracking - single/double axis

    tracking systems (characterized by step by step

    motors and control electronics)

    Self contained systems or stand alone

    Network connected systems or grid connected

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    Operation

    A PV module is usually mounted on the roof of the house

    so that it is exposed to direct solar radiation throughout

    the day, avoiding any shadow. The module converts

    incident radiation into electricity, which, in turn, charges

    the battery, which is placed inside the house.

    The battery provides power to the CFLs, and to the

    television and/or fan as required. A charge controller

    prevents overcharging and deep discharge of the

    battery.

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    The technicians not only carry out servicing and

    maintenance, but are encouraged to supplement their

    income on a commission basis by promoting SPVS.

    Servicing the area on motorcycles, they not only provide a

    quick after-sale service but also act as collection agents for

    loan repayments. This close relationship with customers

    allows their company to better understand, efficiently serve,

    and develop long-term relationships with them. They are

    able to provide at-home design consultation, installation,

    and after-sales service on all products sold.