Solar electricity basics : a green energy guide by Daniel D Chiras; Robert Aram; Kurt Nelsoon

By Daniel D Chiras; Robert Aram; Kurt Nelsoon

C каждым днем ископаемого топлива становится все меньше, и сейчас очень актуальным становится вопрос об использовании альтернативных источников энергии.
Книга Основы Солнечного Электричества обеспечивает четкое понимание электрических процессов. В нем рассматриваются все виды солнечных систем, вы можете выбрать нужные компоненты, произвести расчет, установить фотоэлектрические системы, и многое другое.
Если ваша цель снизить энергозатраты и достичь полной энергетической независимости, эта книга то что вам нужно.

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By Daniel D Chiras; Robert Aram; Kurt Nelsoon

C каждым днем ископаемого топлива становится все меньше, и сейчас очень актуальным становится вопрос об использовании альтернативных источников энергии.
Книга Основы Солнечного Электричества обеспечивает четкое понимание электрических процессов. В нем рассматриваются все виды солнечных систем, вы можете выбрать нужные компоненты, произвести расчет, установить фотоэлектрические системы, и многое другое.
Если ваша цель снизить энергозатраты и достичь полной энергетической независимости, эта книга то что вам нужно.

Show description

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7: As any school child can tell you, the Earth orbits around the Sun. Its orbit is not circular, but rather elliptical, as shown here. Notice that the Earth is tilted on its axis and is farthest from the sun during the summer. Because the northern hemisphere is angled toward the sun, however, our summers are warm. UNDERSTANDING THE SUN AND SOLAR ENERGY 29 Irradiance is also lowered because the density of sunlight striking the Earth's surface is reduced when it strikes a surface at an angle (described earlier).

Peak Sun, Peak Sun Hours, and Insolation Another measurement installers use when designing PV systems is peak sun. Peak sun is the maximum solar irradiance available at most locations on the Earth's surface on a clear day - 1,000 W / m 2• One hour of peak sun is known as a peak sun hour. 5 shows a map that shows the daily average peak sun hours in the United States and Canada measured as kW /m 2/day. Peak sun hours is a measure of solar irradiation (watts per m 2 per day). It is also commonly referred to as solar insolation or simply insolation.

Once cooled, the cast ingot is removed from the mold, then sliced using a diamond wire saw, creating wafers used to fabricate solar cells. Polycrystalline solar cells are only about 12% efficient. 5 to 14%). Although polycrystalline cells are less efficient, they require less energy to produce. Because of this, they're a bit cheaper to manufacture. Ribbon Polycrystalline PV While most polycrystalline cells are sliced from ingots, wafers can also be made in long continuous ribbons. 4b, a seed crystal is attached to two heat-resistant wires called filaments.

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