Exploration around Solar Energy Capture
In 2018 I was working on an energy grant focused on Affordable and Sustainable Living Environments throughout the one-year research project, we generated lots of directions around new and combined methods for solar capture. We ended up focusing on other areas of Sustainable Living and didn't push the solar concepts further in the end. But after seeing the James Dyson Awards 2020 climate award went to AUREUS, a new type of solar panel which captures UV-light I wanted to give them another look. Here are seven possible methods to increase the efficiency of solar panels through the increased capture of waste heat and light.
Radiative cooling Methods: #
These solutions focus on reducing and capturing the heat from solar panels to increase efficiency. Decreasing the temperature of the panels can increase energy capture by approximately 0.45%. [^1]
Ceramic Substrate Heat Capture
Current solar panels contain a back sheet that supports the frame and holds the junction box. We could replace the back sheet with a Ceramic capacitor to absorb the waste heat from the panels. Reducing the temperature of the solar cells and converts the waste heat into useable energy.
One-way Infinity Mirror
The efficacy of a panel is dependent on the angle the sunlight hits contacts the solar cell. By using a one-way mirror the light would be traped and reflected into the solar cell at a more optimal capture angle.
Through warping the top isolating glass plate which covers the solar cell we change the speed and angle of light entering the solar cell to create a more focused capture. And increase the degree of capture.
Current panels absorb a spectrum of light typically in the same spectrum we can see with a little wiggle room on each side of the spectrum. If built on the idea of Multi-junction solar cells we may be able to break up solar cells and create clusters cells and use the prism to focus the bands of light to the cluster which matches the band of light.
Mixed-use methods: #
Since the peak capture of a solar panel is limited in the degrees that light is captured, we could combine some of the above concepts around light scattering to increase the surface area of a solar cell by staggering them to increase the panel density.
Light Reflection Solar Disk
Through combining the heat capture and light scattering methods we could create a pipe filled with water and surrounded by a large mirror. This would focus light towards the pip which a curved solar cell, and capture the waste heat from both sides by the water in the pipe.
Next, I'm testing out scaled-down versions of all these panels to get data around whether or not they would be viable to try at scale.
Reference Notes #
[^1]: Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody