ding
Confront reality
- Oct 25, 2016
- 119,275
- 21,101
You just conceded the cooling effect of solar farms. Make up your mind.Converting photons into electricity removes that energy from the earth’s energy balance
Hilarious.
Let's look at the numbers. If the Earth's albedo is 0.40, the 100 watts of solar energy that hits our parcel turns into 60 watts of heat and 40 watts returns to space. If a fairly typical solar panel is on that parcel and has an albedo of 0.05, only 5 watts returns to space.
95 watts are left and let's assume the efficiency of the solar cell is 20%.
19 watts become electricity and 76 watts are heat.
I'll do the math for ding (because it looks like he needs the help).
Earth returns 40 watts to space, 60 watts remain as heat.
Solar panel returns 5 watts, 76 watts is heat and 19 watts is electricity.
I'm gonna say that most (or all) of the 19 watts will eventually turn into heat.
Which scenario results in more heat?
I'll give ding a hint........what's larger, 95 or 60?