Sorry for the delay in updating you guys, but I had some difficulties getting this thing working and I don't brew too much in the winter since I brew in a detached garage with no heat.
I did a double brew day yesterday and this hot water worked incredibly well! I was able get water from 50 degrees to up 180 degrees! I could probably sparge directly from this hot water heater, but without it being digital controlled I don't trust it maintaining a steady temperature.
Still, it saves a ton of time because I can fill my HLT with water at nearly sparge temp. Having a sink with hot water for cleaning throughout brew was also a huge upgrade.
Now that I can get water at basically sparge temp right away, I'm going to setup my HLT to be electric. I figure a small 110V heat stick will be enough to increase it 10-15 degrees in a reasonable amount of time and maintain that temp as needed.
Here are a few pics from my brewday yesterday:
Filling up my Hot Liquor Tank from my propane powered on demand hot water heater. It can get water up to close to 180 degrees!
The brewhouse. Boil Kettle on left. Mash Tun in the middle. Hot Liquor tank on the right. Sink and Hot water heater to the right of that and glass carboys getting cleaned in front of the sink.
Filling up a carboy with White IPA. *(We covered the carboy with a towel right after this pic to protect from UV.
Close up of the wort chiller and inline oxygen injection system.
Recirculating the mash while heating up sparge water.
Pumping wort into the boil kettle while sparging into the Mash Tun.