blichmann pot calibration

[pdsnyder2002]

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Does anyone have statistics on the 20 gallon blichmann pots? Looking for heat transfer coefficient and heat capacity.

Thanks.

[kal]

I've never seen anything like this for any pot.

Just out of curiosity, what are you looking at doing or why do you want this information? Heat transfer how? From heating below? Inside? Something else?

The Blichmann pots are 18ga stainless steel. They are not meant to hold heat within. They would transfer heat through the walls the same as any 18ga stainless pot. I'm not sure if they're 304 or 316 stainless or something different.

Kal

[kal]

I've never seen anything like this for any pot.

Just out of curiosity, what are you looking at doing or why do you want this information? Heat transfer how? From heating below? Inside? Something else?

The Blichmann pots are 18ga stainless steel. They are not meant to hold heat within. They would transfer heat through the walls the same as any 18ga stainless pot. I'm not sure if they're 304 or 316 stainless or something different.

Kal

[pdsnyder2002]

Most brewing software programs have this as an option to dial in your brewing system. An example would be to see how much temerature loss you would get to your first runnings, as you pump the hot wort to the room temperature boil kettle. It is not essential information by any means, but more of a curiosity.

Also, another post mentioned that he has to set his hlt temp a little higher to maintain the mash tun temp. So, knowing what the heat x-fer of the mash tun might be useful to a brewer.

Thanks.

[kal]

Got it! That makes sense.

I've never seen this sort of information posted but that doesn't mean it doesn't exist of course! Maybe someone has come across it and can post it here.

The one place I think it's the most critical is during mashing for systems that do not maintain temperature (like people mashing in picnic coolers). On my setup we constantly heat the wort carefully via HERMS so any heat loss is returned. If the pot was losing more heat then the HLT element would simply fire more often to maintain temp. That's the nice thing about set-and-forget systems.

I'm not sure who posted about having to set their HLT higher than MLT to maintain mash temp... maybe they didn't build the setup the same as mine? On my setup I don't have to do this. Whatever I set the HLT to, the MLT follows.

Here's picture of the HLT set to and measuring 149F, the MLT is also at 149F as it follows exactly - there is no differential (both temp probes have been calibrated):



If you don't pump as fast, use different pumps, different HERMS coil, and/or maybe use different hoses, then maybe it wouldn't work the same way.

I've never liked offsets as it's something else to "remember" so I wanted to make sure that the MLT would always follow the HLT exactly. It just makes it more obvious/simpler to use.

Kal

[kal]

Got it! That makes sense.

I've never seen this sort of information posted but that doesn't mean it doesn't exist of course! Maybe someone has come across it and can post it here.

The one place I think it's the most critical is during mashing for systems that do not maintain temperature (like people mashing in picnic coolers). On my setup we constantly heat the wort carefully via HERMS so any heat loss is returned. If the pot was losing more heat then the HLT element would simply fire more often to maintain temp. That's the nice thing about set-and-forget systems.

I'm not sure who posted about having to set their HLT higher than MLT to maintain mash temp... maybe they didn't build the setup the same as mine? On my setup I don't have to do this. Whatever I set the HLT to, the MLT follows.

Here's picture of the HLT set to and measuring 149F, the MLT is also at 149F as it follows exactly - there is no differential (both temp probes have been calibrated):



If you don't pump as fast, use different pumps, different HERMS coil, and/or maybe use different hoses, then maybe it wouldn't work the same way.

I've never liked offsets as it's something else to "remember" so I wanted to make sure that the MLT would always follow the HLT exactly. It just makes it more obvious/simpler to use.

Kal

[pdsnyder2002]

I will do the measurements and post a reply with those statistics. Some brewers who brew in cold conditions may want that information!!

Pete

[WAKeele]

I'm sure if you contact John Blichmann, he'll prove you with any information he has. I want to say I've heard this discussed before in an interview with him or at least by some others with experience (John Palmer maybe) on a Brewing Network podcast.

[kal]

[kal]