Technical FAQs 4

How to measure the solar constant?

In this lab we will make a measurement of the solar constant. The solar constant is a measure of the intensity of the sun at the surface of Earth. It is expressed in units of W/m2. To measure the constant, we will use water to absorb solar energy for a certain amount of time.

What is the Solar solar constant constant?

In In other other words, words, the the solar solar constant constant is is the the intensity intensity of of the the sunlight sunlight falling falling on on the the earth's earth's outer outer atmosphere. atmosphere.

How do we measure solar energy absorbed by water?

It is expressed in units of W/m2. To measure the constant, we will use water to absorb solar energy for a certain amount of time. From the temperature rise of the water, we can determine how much energy it absorbed, and since we know the area of the container and how long it absorbed energy, we can determine the intensity.

What is the maximum temperature for a summer solstice?

For the maximum-temperature condition, select noon on June 20, the summer solstice, when the solar declination is 23.5 . Assume that the solar constant (the solar flux on a surface perpendicular to the solar vector) is 343 Btu/ (h) (ft 2) (1080 W/m 2), the air temperature is 90 F (305 K), and the effective sky temperature is 5 F (258 K).

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How big should the solar constant temperature container be

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