More Solar for "Us"
Ok, I went off.the deep end? Bought 3 used 37watt uni-solar panels and a blue sky 2000e controller for the hefty price of $400, They were being listed as 75w panels, they are not The tested open...
Forum Discussion
No, I didn't misunderstand you. I suggest you get a grip on thermodynamics before providing misinformation.
1. The panels do not RADIATE heat. Heat transfer is through CONDUCTION.
2. Glass is a pretty good thermal conductor. It's 100 times better conductor than air. It's conductivity is similar to thermal grease.
3. Since all the heat needs to be conducted to air, air is the weakest link in the equation. The surface area of the panel that makes contact to air is the dominate factor in keeping the panel cool.
Sal
1. The panels do not RADIATE heat. Heat transfer is through CONDUCTION.
2. Glass is a pretty good thermal conductor. It's 100 times better conductor than air. It's conductivity is similar to thermal grease.
3. Since all the heat needs to be conducted to air, air is the weakest link in the equation. The surface area of the panel that makes contact to air is the dominate factor in keeping the panel cool.
Sal
pianotuna wrote:
You misunderstood I believe. The glass heats in traditional panels and it is a pretty good insulator, so the panel remains hot longer. Part of that is because it is heavier to start with, i.e. more massive.
The Unisolar panels will cool down faster, and radiate better.Salvo wrote:
I hope they're not teaching that at our schools now.
The mass of the glass has little effect on heat dissipation. The prominent factor in heat dissipation is surface area. These panels have half the surface area. It's a no-brainer.
Salpianotuna wrote:
Heat dissipation is superior in non glass panels, as they have less mass.
