I'm not sure I've seen a definite answer to the amount of heat needed for our cold MN winters from 0-40F ambient temps in the garage.
I'm worried that the 11" wide Flexwatt stuff might not be enough heat to handle the cold (obviously, with some sort of insulation around the plastic 15gal conical). It appears that the 11" wide Flexwatt is 20 watts per foot. I also wonder if the pipe tape or silicon heat pads get too hot for the plastic since there are various warnings on the different products.
If I understood the math, maybe the info at this link would be helpful:
https://www.mbaa.com/districts/NorthernCalifornia/Documents/2014 Joint Technical Conference/3-3 F Scheer Thermodynamics for Brewers.pdf
Page 33-43 is about fermenting.
Does anyone have a successful install in 0-40 degree ambient temps and can recommend a product or amount of watts needed to keep the yeast happy? I'll be using CraftbeerPi and can use either a SSR or Relay (depending if PWM is needed) to control the heat temps.