That's gonna move a LOT of water.
Can't wait to see what my son comes up with for me. Said it should be a couple of weeks. He's got some program that I think is called "Rhino" and quickly showed me with it what he's got in mind. And my understanding is that he's got the equipment at his disposal to make things directly from his Rhino files.
If I didn't mention it, it turns out the copper coil isn't wrapped around the stainless steel interior rod. He'll wrap the coils around a much thicker pipe, remove it, then put in the much smaller stainless rod. After painting the coils flat black.
Really looking forward to testing. Especially to see how it performs on days that're sunny but cold. If it works out, it really wouldn't be the end of the world to cut big kerfs in the most frequently-used part of the workshop floor (maybe 500 square feet) and put tubing in to warm at least that part of the floor, which would gradually warm other parts of it.
I'm planning a trip to the store today to pick up a bunch of 16' tarps (about 1000 total square feet) and two more 150k BTU kerosone heaters and a thermostat for them. Going to seal off the front half of the building since the rest doesn't need heat. Am expecting it to make a huge difference. Not much R value to tarp, but it'll be a lot better than just leaving the unused back half of the shop wide open.
The old 150k heater was having a problem with frequently blowing out clouds of smoke. Finally determined the cause this weekend. Gotta quit burning diesel in it. Found the ignitor and it was fouled like a too-rich spark plug. Cleaned the whole assembly, put it back together, and it's working perfectly.
