I'm exploring a DIY project about solar power and found very little resources that can explain in a not too simple but not too advanced way how to go about calculating important values in solar power, specifically concentrated solar power. So maybe someone here could help me get started or show me where I can find answers to this question.
I am wondering how you can calculate the temperature that a receiving point of focus can get from concentrated sunlight. The following example shows the basic variable factors that I am aware of, so given the following conditions:
suppose there is a material in the shape of a dish with a surface area 'x' and a reflectivity factor 'r', there is a clear cloudless sky with sun directly above the dish and the current air temperature is 'y' (e.g. 25 degrees celsius or 77 degrees fahrenheit) and the dish reflects light onto a receiver which is at a perfect focal point. The receiver has heat absorption efficiency of ('a') and insulation efficiency of ('i').
Is there a simple formula that can put these factors (+probably others I am unaware of) together to calculate or approximate the temperature ('q') the receiver can reach after a time 't'.
E.g. something like
q = r*x*y*t+a*i
(No doubt this is wrong.)
Ignore for simplicity if you like, for the moment some of the details for achieving a geometrically optimal shape and the different amounts of heat depending on the location of the dish on the earth and the time of the day.
I am most interested in the qualities needed by the reflecting material. Besides geometric efficiency is reflectivity the main factor in the performance of the reflecting material?
I have fairly beginner/amateur level knowledge of physics. In this area I have read chapters about optics in a first year level college physics book. But optics seems like such a vast area, at the moment I am just interested in finding out the details of just a small area of it.