Pico-solar Electric Systems: The Earthscan Expert Guide to by John Keane

By John Keane

This ebook offers a accomplished evaluate of the expertise at the back of the pico-solar revolution and provides tips on find out how to try and select caliber items. The ebook additionally discusses how pioneering businesses and tasks are overcoming demanding situations to arrive scale available to buy, from leading edge distribution recommendations to arrive shoppers in rural India and Tanzania, to product improvement in Cambodia, product meeting in Mozambique and the advent of ‘pay as you move’ expertise in Kenya. Pico-solar is a brand new classification of sun electrical procedure which has the aptitude to remodel the lives of over 1.6 billion those that reside with out entry to electrical energy. Pico-solar structures are smaller and cheaper than conventional sunlight structures and feature the facility to supply important quantities of electrical energy to cost the expanding variety of low energy eating home equipment from cellphones, e-readers and parking metres, to LED lighting that have the ability to illuminate hundreds of thousands of houses within the similar means the cellphone has hooked up and empowered groups around the planet. The ebook explains the $64000 function pico-solar has in decreasing reliance on fossil fuels whereas whilst tackling international poverty and comprises priceless techniques for marketers, charities and governments who are looking to perform constructing this interesting and speedily increasing marketplace.

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2 1350 W/m2 of solar radiation arrives in the earth’s atmosphere. Some of this radiation is absorbed by the atmosphere and reflected by clouds such that 1000 W/m2 reaches the earth’s surface (left). A reasonable PV module is capable of converting about 10 per cent of this energy. An indication of how much power 1000 W/m2 actually is shown on the right by relating it to the rating of a small electric cooker. Source: adapted from Hankins (2010) 18 THE SOLAR RESOURCE Direct and Diffuse Radiation Solar radiation can be divided into two types: direct and diffuse.

The challenge is finding ways in which we can practically use this energy. Plants do this every day, converting sunlight into chemical energy through photosynthesis. The sun’s heat is also put to use every day, not least to dry peoples’ clothes and heat water tanks with solar thermal collectors. Industrial solar thermal systems have also been developed which harness the sun’s heat to create steam to power electric turbines. The focus of this book, however, is on solar photovoltaic modules (solar PV) which use the sun’s light to generate electricity.

Source: John Keane State of Charge (Soc) A battery’s SoC indicates the level of energy remaining within the battery. 6 shows how the SoC rises and falls as energy is put in and taken out of the battery. The voltage of a battery varies at different states of charge. 7 V, respectively, vary according to different SoC. 7 shows a multi-meter being used to measure the voltage of a battery. 6 Battery SoC at 20 per cent and 80 per cent. SoC falls as the battery is used and rises again as it is recharged.

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