Advice, please, general and specific. I want to use a tap (cold) water source and a siphon from a boiling stock pot to a mixing valve to source me up to 8 gallons of water at an exact (like, +/-2 F) desired temperature (from ~150F to ~180F). Point Of Use (POU) hot water heaters abound but not so much for these temperatures and besides, I want it small enough to put away with the brewing equipment. And besides I wanna build it myself.
Seems like this project would start with a Teensy & user interface, two solenoid valves, a cold water under-pressure source hose, a hot water siphon hose coming from a pot boiling on the stove, and a temperature sensor dangling below the output hose. Operation would be to set a gallon container below the outlet with the temperature sensor in it, set the temperature, hold a button down until the container is full of the correct temperature water.
General advice:
1. Any obvious problems with the above (for example, I might have a problem in the boiler, with liberated absorbed gas collecting at the top of the hot water siphon tube preventing siphon.) ?
2. There's a TON of homebrewing toys out there and I haven't found this anywhere. There're two tons of homebrewing arduino projects out there and I haven't seen a POU hot liquor tank. This makes me nervous; again, what am I missing?
Specific advice:
I need a valve that'll take ~boiling water. I figure a clothes washer dual supply solenoid valve really ought to withstand boiling temperatures so I took one apart (the electrical parts) and boiled it. Seems to stay perfectly intact, yay. A plus would be one that is rated for drinking water, but I'll test this one for odors/taste and I'll pretend that flushing it well will reduce any bad plastic stuff sufficiently. Bad idea? Thoughts on more suitable, extremely cheap, boiling-rated valves?
___Marty
Seems like this project would start with a Teensy & user interface, two solenoid valves, a cold water under-pressure source hose, a hot water siphon hose coming from a pot boiling on the stove, and a temperature sensor dangling below the output hose. Operation would be to set a gallon container below the outlet with the temperature sensor in it, set the temperature, hold a button down until the container is full of the correct temperature water.
General advice:
1. Any obvious problems with the above (for example, I might have a problem in the boiler, with liberated absorbed gas collecting at the top of the hot water siphon tube preventing siphon.) ?
2. There's a TON of homebrewing toys out there and I haven't found this anywhere. There're two tons of homebrewing arduino projects out there and I haven't seen a POU hot liquor tank. This makes me nervous; again, what am I missing?
Specific advice:
I need a valve that'll take ~boiling water. I figure a clothes washer dual supply solenoid valve really ought to withstand boiling temperatures so I took one apart (the electrical parts) and boiled it. Seems to stay perfectly intact, yay. A plus would be one that is rated for drinking water, but I'll test this one for odors/taste and I'll pretend that flushing it well will reduce any bad plastic stuff sufficiently. Bad idea? Thoughts on more suitable, extremely cheap, boiling-rated valves?
___Marty