# Solar Energy Help ASAP

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John has used a solar simulator setup to measure the relation between the voltage and the current of a small photovoltaic cell (40 cm long and 40 cm wide). The measurement setup maintains the standard measurement conditions: the temperature is controlled to 25oC, the incident spectrum is the AM1.5 spectrum and the incident power density is 1000W/m2. The result is illustrated in the figure below.

Calculate the short-circuit current density (in mA/cm2).

John determined that the maximum power he could get out of this module is 19.5 W. Calculate the fill factor of the module (in %).

What is the efficiency of the module (in %)?

John decides to connect two of these modules with strips. This results in an additional 2mΩ series resistance loss. Which is the new fill factor (in %)? (Hint: use the voltage drop at the maximum power point).

• Solar Energy Help ASAP -

• Solar Energy Help ASAP -

Can you also give the rest of the answers?? thanx

• Solar Energy Help ASAP -

Help on the rest???? Thanks

• Solar Energy Help ASAP -

None of the other answers are 6...

• Solar Energy Help ASAP -

Someone can give me a hand?

• Solar Energy Help ASAP -

• Solar Energy Help ASAP -

Just need the last one now....Someone???? the fourth answer

• Solar Energy Help ASAP -

someone can help???

• Solar Energy Help ASAP -

4th ans is 62.

• Solar Energy Help ASAP -

Solar simulators are used to study the performance of solar cells in the lab. In the figure below (left picture), the spectral power density of a solar simulator is shown with the blue line. The spectral power density of this solar simulator is given by:

P(λ)=7.5∗1015λ−2.25∗109 [Wm−2m−1] for 300nm<λ<500nm

P(λ)=2.25∗109−1.5∗1015λ [Wm−2m−1] for 500nm<λ<1500nm

Where the wavelength λ is expressed in meters.

a) calculate the irradiation I of the solar simulator (in Wm−2 )

incorrect
b) What is the photon flux of the solar simulator (in 1021m−2s−1)?

• Solar Energy Help ASAP -

Hi Ratan how did get 62 for the 4th answer?

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