Introduction to solar cells week 1 part D

 Introduction to solar cells

week 1part D

link to join this course https://www.coursera.org/learn/solar-cells

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TO PASS 66% or higher

GRADE

100%

Sunlight at Earth

LATEST SUBMISSION GRADE

100%

1.Question 1

Select the correct statement(s)

AM0 refers to the spectrum outside the atmosphere

Correct

That is correct

AM0 is equvilant to the light as it has traveled 0 times through the atmosphere.

AM1.0G is used for all standardized testing of terestial solar cells

AM1.5 refers to the the radiation spectrum when the light has traveled 1.5 times the vertical height of the atmosphere

Correct

That is correct

AM1.5 is equivalent to the light as it has traveled 1.5 times through the atmosphere and is equivalent to the atmosphere thickness at solar zenith angle of 48.2 degrees.

AM stands for air measure

1 / 1 point

2.Question 2

Personal solar panel

The average electricity consumption per person in Denmark is 6.12·106 Wh per year, meaning that an average Dane continuesly consumes 700 W.

Please calculate the area of the solar panel needed for an average Dane if we assume 20% efficiency, 1000 W/m2 of illumination, and 8 hours of sunlight per day.

Please provide the answer in square meters (m2), do not write the units (example answer 8.5).

10.5

Correct

That is correct

The solar panel for each Dane would have to be 10.5 m2 .

1 / 1 point

3.Question 3

Which challenges can you predict if we want to cover the world’s energy need with only solar cells?

main tera hero

Correct

There are many potential challenges with trying to implement solar cells on such a large scale that we can produce 15 TW of energy. Here is a list of some of them

• Solar energy is sporadic since energy production is dependent on day/night cycles, seasons, and weather. Solutions could including battery storage, smart energy system, and better power interconnections across borders, etc.
• Depending on the solar cell technology, we must consider if we have the sufficient abundance of the needed chemical elements.
• We will need to find suitable areas for the deployment of the solar cells. In some countries it may be problematic to find suitable areas with little other use.