Temperature vs RH

[carholio]

First an observation then a question.

I have an Edgestar 28 bottle wineadore. I keep it humidified with about a dozen 69rh Boveda packs (6 on bottom, 1 in each drawer (4) and 2 on the top shelf). As the temp. in the wineador goes down to 64-65* the rh goes down to about 65rh. As the temp. goes back up the rh goes back up to 69rh.

I recently bought 3ea - 1/2 pound bags of HCM beads 65rh. I am bringing up the rh of the beads to 68 - 69 (my preference) per the instructions. Once i had them showing 69rh @ 70* inside a sealed freezer bag i took out the added DW source and thought i was good. However, after sitting in the sealed bag over night, the temps in the house went down to 65* and the rh dropped down to about 65.

Now my question - is there a direct correlation between temperature and RH? If i want the rh in my wineadore to be 68 - 69 and i want to keep my temp in the wineador @ 65* should i condition the beads to 72 - 73rh @ 70* to obtain 68rh at 65*?

 

[Jfire]

Yes when temps DROP Rh GOES UP.

 

[carholio]

Yes when temps DROP Rh GOES UP.

I am observing the exact opposite though, when the temp goes down the RH also goes down. Humm??

I would have thought it was something with my winador but when the same thing happened in a sealed freezer bag, it stumped me.

Oh - all hygrometers have new batteries and were calibrated with the boveda calibration kit.

 

[Mickeymorris626]

I observe that when the temp goes down, so does my humidity. Maybe our edgestars are broken. My RH fluctuates like crazy right now , although its empty right now. Might have something to do with it

 

[ATL]

Humidity is relative because it depends on temperature. The colder the environment, the lower the rh... The higher the temp, the higher the rh. This is why in some desert states it doesn't feel like the temperature as it's a dry heat. And, conversely, why, in the south, it can be 88 and, with the humidity, feel like 98. Also, the driest environment on earth is not the desert, it's the South Pole in the dead of it's winter.

 

[Tobacco Giant]

When the temp drops, is it due to the edge star running? The unit running will lower rh.

Rh is relative because higher temps are capable of holding more moisture. Thus, when temps drop, absolute humidity may not change but rh should go up.

 

[carholio]

When the temp drops, is it due to the edge star running? The unit running will lower rh.

Yes - i thought that too. But when the rh in the sealed freezer bag - outside of the wineador went down it confused things for me. Maybe i took the DW / sponge out of the freezer bag with beads too soon causing the hygrometer to get a false reading from the DW / sponge but the beads had not totally stabilized - and the temp / rh drop was just a coincident?

I think i'll throw a 69rh boveda in the sealed freezer bag / beads and just let it there for a few days and see what happens as temp change.

 

[Tobacco Giant]

When the temp drops, is it due to the edge star running? The unit running will lower rh.

Yes - i thought that too. But when the rh in the sealed freezer bag - outside of the wineador went down it confused things for me. Maybe i took the DW / sponge out of the freezer bag with beads too soon causing the hygrometer to get a false reading from the DW / sponge but the beads had not totally stabilized - and the temp / rh drop was just a coincident?

I think i'll throw a 69rh boveda in the sealed freezer bag / beads and just let it there for a few days and see what happens as temp change.

In all honestly, you'll probably need several months of tinkering with your set up to get it just right, and even then it may require some maintenance. You've got the basic idea down, it took me probably 6 months from that point to learn how my set up worked and responded to everything I tried to do with it. The changing of seasons and the ambient atmosphere threw a couple wrenches in there as well. I read and I read and I read, but messing around with it myself was the only thing that got it working the way I wanted it to. Sorry I can't be more help, lol.

 

[Jfire]

Last edited by Jfire