HLT Control with strike, mashout, sparge
Posted: Wed Oct 29, 2008 12:02 pm
Ok, lets take this one(two) step(s) further.
In the brewing scenario, we want to heat up our HLT as fast as possible, then fall into a maintenance state, so -
Heater at 100% until temp is 170deg (strike temp) then maintain at 170 with 25% duty cycle (PID?) until user confirms to the next step.
We manually pump strike water to the mash tun, then confirm next step which is-
Heater at 100% until temp is 205deg (for mash out) then maintain at 205deg at 25% duty cycle until user confirms next step.
We manually pump 205deg water to the mash tun, then confirm next step which is-
Change setpoint to 170deg (for sparging) holding until user confirms process complete. Or optionally a float switch indicates that the water level in the HLT is at risk of exposing the heater element.
I will discuss RIMS mash temp control in the next post.
In the brewing scenario, we want to heat up our HLT as fast as possible, then fall into a maintenance state, so -
Heater at 100% until temp is 170deg (strike temp) then maintain at 170 with 25% duty cycle (PID?) until user confirms to the next step.
We manually pump strike water to the mash tun, then confirm next step which is-
Heater at 100% until temp is 205deg (for mash out) then maintain at 205deg at 25% duty cycle until user confirms next step.
We manually pump 205deg water to the mash tun, then confirm next step which is-
Change setpoint to 170deg (for sparging) holding until user confirms process complete. Or optionally a float switch indicates that the water level in the HLT is at risk of exposing the heater element.
I will discuss RIMS mash temp control in the next post.