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Renewable Energy > Solar Energy > Flashcards

Solar Energy Flashcards

1
Q

device used to measure total (or global) solar radiation

A

Pyranometer

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2
Q

device for measuring direct solar radiation

A

Pyrheliometer

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3
Q

device that serves to collect solar radiant energy and transform to useful energy form; can be of flat plate type or focusing type

A

Solar collector

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4
Q

device used to convert solar radiation directly into electricity; most common type is the single crystal silicon solar cell

A

Photovoltaic cell

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5
Q

oldest energy source whose first practical application is drying

A

Solar energy

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6
Q

amount of solar energy received per unit time on a unit area of surface perpendicular to the radiation at the outer limit of the atmosphere

A

Solar constant

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7
Q

Average solar constant

A

1370 W/m^2

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8
Q

Inclination of Earth

A

23.45 degrees

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9
Q

Philippines is located ____ above the equator.

A

14 degrees

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10
Q

Any atmospheric condition reducing transparency to radiation especially to its visible portion

A

Atmospheric turbidity

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11
Q

Percentage of solar radiation absorbed at Earth surface

A

51%

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12
Q

Solar constant ranges from ____ to ____

A

1350 W/m^2 to 1380 W/m^2

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13
Q

Percentage of solar radiation radiated back to the atmosphere

A

19%

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14
Q

Sun is farthest from the earth

152 100 000 km

A

Aphelion

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15
Q

Sun nearest the earth

147 300 000 km

A

Perihelion

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16
Q

Equal hours of night time and day time

A

Equinox

17
Q

Either longer day time or night time

A

Solstice

18
Q

Radiation not being scattered

A

Beam

Direct Solar Radiation

19
Q

Radiation changed/ scattered

Solar sky radiation

A

Diffuse radiation

20
Q

Global solar radiation

A

Total Solar Radiation

21
Q

Medium of heating for solar collector

A

Flat panels

22
Q

Factors affecting atmospheric turbidity

A

Dust
Pollen
Water vapor
Suspended materials

23
Q

Advantages of solar energy in agriculture

A

Solar energy is free
Prevents global warming (production phase)
Cheaper than fossil fuel
Can be use for a long time (20 years)
Can be stored
Effective solution to drought-related problems

24
Q

Disadvantages of solar energy

A 
Location restrictions
High initial investment
Potential hazard upon disposal
Expensive energy storage
No power generation during nightime
Large area requirement for installation

Renewable Energy (4 decks)

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