I am making a heat exchanger for my shower trap arm. I have a 2" section of copper drain pipe that I want to coil the incoming water supply line around, before the supply feeds into the 3/4" inlet of my on-demand water heater. I already tried and failed at coiling 3/4" soft copper tubing around...
Hi,
I'm a bit stuck on a hot water circuit that I'm trying to come up with for a small guest house. I have 6 water heaters with built-in heat exchangers that I'm planning to connect to a loop, itself fed by a solar water heater and/or a heat pump.
I came up with 3 options (see drawings), but...