Insolation daily average

Fig, I, Availability of solar eueigy (insolation) (a) Average number of horn s of sunshine per year (United States) (b) median daily insolation in langleys (North America in June) (c) in December. (National Oceanic and Atmospheric Administration)... 

With very few exceptions, the developing countries are situated in climatic zones of the world where the insolation is considerably higher than the world average of 3.82 kWh/m day [153]. In Table 14.1 daily average horizontal insolation data and sunshine hours are given for some developing countries [152,154],... 

FIGURE 4 Daily average horizontal insolation at the South Pole, 2002. Source CMDL,... 

The average daily incident solar radiation, or insolation, that strikes the earth s surface worldwide is about 220 W/m (1675 Btu/ft ). The annual insolation on 0.01% of the earth s surface is approximately equal to all energy consumed (ca 1992) by humans in one year, ie, 321 x 10 J (305 X 10 Btu). In the United States, the world s largest energy consumer, annual energy consumption is equivalent (1992) to the insolation on about 0.1 to 0.2% of U.S. total surface. 

Collares-Pereira M., Rabl A., The average distribution of solar radiation correlations between diffuse and hemispherical and between daily and hourly insolation values. Solar Energy 1979 22 155-164. 

See color insert following page 140.) Annular average of daily solar energy received (insolation) in different locations in the United States. (Courtesy of the National Renewable Energy Laboratory (NREL)/U.S. Department of Energy.)... 

The sensitivity results for PV electricity prices are as follows. A 5/m2 increase in the area cost of PV modules causes PV electricity price to increase by 0.002/kWh. A 5/m2 increase in the area BOS cost causes PV electricity price to increase by 0.002/kWh. A 1% increase in PV module efficiency causes PV electric ity price to decrease by 0.004/kWh. A 42 W/m2 increase in the average insolation level, which represents a 1.0 hour increase in the average daily peak insolation... 

TABLE 4.2 Average Daily Insolation for Selected U.S. Cities" January... 

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