In this technical illustration for Solar Today Magazine, I show the assembly of a hybrid photovoltaic/hot water roof system. Photovoltaics are overlayed on top of a standing seam metal roof. Underneath that, loops of tubing carrying fluid captures heat coming through the roof and can use that inside the house. Underneath the tubing is a reflective metal layer to keep the heat from penetrating deeper into the roof assembly.
How it was done:
Like all of my technical drawings in this series for Solar Today, I used a crisp style, but with some sketchy linework accents as a nod to an earlier time when you had to project lines toward vanishing points by hand. I use curved slices and partially transparent portions to show how the system is layered.