Explain in detail about each of the following solar energy conversion processes. 1.1 Thermal conversion
1.2 Photovoltaic conversion
1.3 Biological conversion (15)
2. Find the distance in km of your birth place from the equator and the 0° degree longitude
line. (10)
3. Use the Excel to plot a graph between the EoT and the day of the year. Then report the value EoT of day fifteen of each month in the table. After that, use the EoT to find the local solar time (LST) of day fifteen of each month for Maejo University. Assuming that the local time (LT) is 11.30. Please show in detail at least one answer how you come up with the answer. (20)
4. Equation on slide 54 describes the distance from the sun to Earth. Use Excel program to calculate and plot this distance as a function of days. From the graph, find the maximum and minimum value of the distance. When is it occurs? Is it sensible to assume that the distance from the sun to Earth is constant? Comment on your result. (20)
5. Equation 7 (page 62) is the relationship between the declination angle and the day of the year. Use Excel program to obtain and plot the declination angle as a function of days. From your calculation, when does the sun position directly above the equator? What happens on that particular day? When is the declination angle maximum? When is the declination angle minimum? What happen on those particular dates? Explain your result.