Author Topic: Maintaining water temperature...  (Read 756 times)

Offline quest4watneys

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Maintaining water temperature...
« on: April 26, 2011, 02:33:35 PM »
Does a thinner mash make it more difficult to keep your temperature up? During my first AG attempt, I missed my target mash temp by a degree, but that was after continuously adding hotter and hotter water to get the temp up. I ultimately ended up adding about 6 gallons of an 8 gallon total volume. I use a converted 48 qt. Igloo Ice Cube cooler which I've read good things about but it lost about 3 degrees every 20 mins. and that was while it was wrapped in blankets. I was wondering if my soupy mash contributed to the rapid heat loss. Thanks again!
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Offline morticaixavier

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Re: Maintaining water temperature...
« Reply #1 on: April 26, 2011, 02:54:37 PM »
I don't THINK so, but I am not a physisist (hell I can even spell it!)

What I think is that more liquid has more thermal mass and so should actually slow the loss of heat.
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Re: Maintaining water temperature...
« Reply #2 on: April 26, 2011, 03:05:54 PM »
I was wondering if my soupy mash contributed to the rapid heat loss.

I think it's more likely that you actually just didn't have a uniform temperature at the beginning and so it was lower overall than the spot you checked. I have that same cooler and I've never seen a mash drop more than ~2°F in an hour.
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Offline malzig

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Re: Maintaining water temperature...
« Reply #3 on: April 26, 2011, 05:34:06 PM »
If a thinner mash is from adding more water, as opposed to using less grain, then it results in more temperature stability thanks to a larger thermal mass.

Offline quest4watneys

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Re: Maintaining water temperature...
« Reply #4 on: April 26, 2011, 07:05:39 PM »
I was wondering if my soupy mash contributed to the rapid heat loss.

I think it's more likely that you actually just didn't have a uniform temperature at the beginning and so it was lower overall than the spot you checked. I have that same cooler and I've never seen a mash drop more than ~2°F in an hour.

With this cooler, do you notice a lot of steam escaping at the point where the lid hinges? I noticed quite a bit which is what prompted me to wrap it in blankets.
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Offline Will's Swill

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Re: Maintaining water temperature...
« Reply #5 on: April 26, 2011, 07:14:29 PM »
Er?!  That's your problem.  Steam carries off a lot of heat.
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