What is current directly dependent on in PV cells?
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Card 7
Front
Why are PV cells coated with an antireflection layer of thickness one-quarter of the wavelength passing through it?
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Card 8
Front
The Sun's power output is about 4 x 10^26 W. Calculate the solar flux in W/m^2 at the Earth's distance from the Sun (150 million km).
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Card 9
Front
On the Hubble telescope, assuming that the light to electrical conversion efficiency is 20%, what area of solar PV panels would be required to produce a power output of 5.6kW?
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Card 10
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Assuming that solar PV panels are capable of generating 300W per kg of area, what is the mass of solar cells on the Hubble Space Telescope?
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Card 11
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The mass of the Hubble Space Telescope is about 11,000kg. What faction of its mass is due to the solar PV panels? Is it significant?
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Card 12
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By equating gravitation force to centripetal force, show that a 97 minute orbital period for the Hubble Space Telescope corresponds to an orbital radius of 7000km. (Mass of Earth = 6 x 10^24 kg)
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Card 13
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Confirm that the Hubble Space Telescope will be in the Earth's shadow for approximately 36 mins of each 97 min orbit. (Radius of Earth = 6360km)
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Card 14
Front
Mars is 228 million km from the Sun. What is the solar flux at the surface of Mars in W/m^2 ?
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Card 15
Front
What area and mass of solar PV panels would be required for a colony on Mars with power demands of 500MW? Comment on the result.
