Liquid pipe thermal conductivity test
People have been telling me granite is the best for making radiators so I decided to test it.
In the picture starting from the right is: Granite, Sedimentary rock, Igneous rock, Obsidian
In the end Sedimentary rock was the best choice with Obsidian being a close second
Okay, so...
I made my own experiment. And the result is, as long as you don't make the radiator from abyssalite, the material is irrelevant.
It's all about heat conductivity and since that is capped by the outside/inside media, the equilibrium heat transfer is the same.
My experiment consisted of six straight pipe radiators from sandstone, granite, igneous rock, sedimentary rock, obsidian, and wolframite. 10 kg/s of petroleum at -13.1 C in each with countercurrent of 10 kg/s of pe