8/9/2019 The ABCs You Should Know About SOLAR Energy

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8/9/2019 The ABCs You Should Know About SOLAR Energy

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(nsolationis a measure of solar radiationenergy receied on a giensurface area in a gien time. (t is commonly e$pressed as

aerage irradiancein watts per s?uare meter )6@m19 or kilowatt>hours pers?uare meter per day )k6h@)m1day99 )or hours@day9. ,irect estimates of solarenergy may also be e$pressed as watts per s?uare meter )6@m19.

(n photovoltaicsit is commonly measured as k6h@k6py )kilowatt hoursper year per kilowatt peak rating9.

Radiation data for solar water heating and space heating systems are usually

represented in British thermal units per s?uare foot )Btu@ft19.

Some istory o& the *oncentration Use o& Solar +ner$y,,Reclaim the Sun-

Ancient reeks and Romans saw great beneDt in what we now refer to as passie solardesignEthe use of architecture to make use of the sun#s capacity to light and heatindoor spaces. Romans adanced the art by coering south facing building openingswith glass or mica to hold in the heat of the winter sun. Through calculated use of thesun#s energy& reeks and Romans o:set the need to burn wood that was often in short

supply.

Bibliography

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