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Dangerously Low Humidity


David Burgess
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I hope people in the US are being very careful about humidity, with the unusually cold temperatures we are having. Where I live, the indoor humidity would be 3% right now (despite the outdoor humidity being 78%), if I were not adding moisture.

During most ordinary winter months, I can get by with using one steam vaporizer. Currently, I am using two, and they are running about 85% of the time to keep my shop humidity up to 40%.

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5 hours ago, David Burgess said:

I hope people in the US are being very careful about humidity, with the unusually cold temperatures we are having. Where I live, the indoor humidity would be 3% right now (despite the outdoor humidity being 78%), if I were not adding moisture.

During most ordinary winter months, I can get by with using one steam vaporizer. Currently, I am using two, and they are running about 85% of the time to keep my shop humidity up to 40%.

I'm running three right now! I'm less a luthier than a moisture farmer at the moment. Part of the problem is I have to humidify the whole house in order to keep the shop where it needs to be. 

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5 hours ago, David Burgess said:

 Where I live, the indoor humidity would be 3% right now (despite the outdoor humidity being 78%), if I were not adding moisture.

i think you are just trying to scare us.

where i'm at we're colder outside, have humidity readings of 80% or greater and have  readings of 47%  indoors for humidity with no humidifiers running.

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54 minutes ago, David Burgess said:

I decided that I'm not going outside to shovel snow until it warms up to zero F. :lol:

I had to clear my driveway of snow.... in San Antonio.  No snow blower, not even a teflon coated snow shovel..just an old rusted dirt shovel.  Never planned on that.   

 

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1 hour ago, David Burgess said:

I decided that I'm not going outside to shovel snow until it warms up to zero F. :lol:

Why the hell didn’t you do it yesterday when it fell and was warmer?!

And on the topic at hand, I have an evaporative pass through humidifier on my furnace that has been doing a good job with only minor maintenance and annual pad replacement.

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6 hours ago, David Burgess said:

I hope people in the US are being very careful about humidity, with the unusually cold temperatures we are having. Where I live, the indoor humidity would be 3% right now (despite the outdoor humidity being 78%), if I were not adding moisture.

During most ordinary winter months, I can get by with using one steam vaporizer. Currently, I am using two, and they are running about 85% of the time to keep my shop humidity up to 40%.

Why don't you just open all the windows?

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16 minutes ago, David Burgess said:

I did. The street snow plow came by this morning at high speed, and filled my sidewalk and driveway entrance back up with heavy, highly compacted snow. :lol:

Oh ya.  I forgot about that un-fun aspect of living in the city.  I’m the local plow driver, so mine gets taken care of right away.

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38 minutes ago, sospiri said:

Modern living. Youse have all gone soft.

She could wear more clothes?

She's working from home. It's hard to type fast and accurately while wearing big puffy mittens, and Ford Motor Company gets mad if her company sends them ten thousand of the wrong part. :lol:

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6 minutes ago, David Burgess said:

She's working from home. It's hard to type fast and accurately while wearing big puffy mittens, and Ford Motor Company gets mad if her company sends them ten thousand of the wrong part. :lol:

She could use voice recognition and still wear gloves, mittens, 3 base layers and four coats like me.

I thought modern marriage was supposed to be about compromise? How come the men are being oppressed?

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15 minutes ago, sospiri said:

She could use voice recognition and still wear gloves, mittens, 3 base layers and four coats like me.

 

That might work, if she was just typing text. How does that work out for complex spreadsheets, and modifying client-sourced data bases?

But you're right, I could bring her a fresh bowl of warm water every 15 minutes to soak her hands in. WTF, I already bring her coffee in bed almost every morning. :lol:

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3 hours ago, uncle duke said:

i think you are just trying to scare us.

where i'm at we're colder outside, have humidity readings of 80% or greater and have  readings of 47%  indoors for humidity with no humidifiers running.

You don't live in  Michigan... Was -8 F where I live this morning... Inside humidity without humidifier, even factoring in cooking, watering plants, and a morning shower, would be way less than ideal.

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34 minutes ago, David Burgess said:

That might work, if she was just typing text. How does that work out for complex spreadsheets, and modifying client-sourced data bases?

But you're right, I could bring her a fresh bowl of warm water every 15 minutes to soak her hands in. WTF, I already bring her coffee in bed almost every morning. :lol:

I don't know. I'm not very computer savvy.

Staying in bed does seem a good idea though.  It was pretty parky here in Yorkshire. Parky as owt.  Nithering!

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9 hours ago, David Burgess said:

I hope people in the US are being very careful about humidity, with the unusually cold temperatures we are having. Where I live, the indoor humidity would be 3% right now (despite the outdoor humidity being 78%), if I were not adding moisture.

During most ordinary winter months, I can get by with using one steam vaporizer. Currently, I am using two, and they are running about 85% of the time to keep my shop humidity up to 40%.

What about Finns should we be careful too. My humidity meter shows 3% 

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2 hours ago, Jeffrey Holmes said:

You don't live in  Michigan... 

what i can't fathom is he mentioning 78% outside and a 3% inside with no machines running or other sources for moisture enhancement.

now if there were to be a 20 to 25% reading outside there in Michigan I could believe that 3%  a little better.  I might bet Finland was in the 20% range or close for PKG but am willing to learn something new everyday too.  Yes, I can be wrong sometimes but I just hate being found to be wrong Sir{s}.

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For a given water vapor content, a decrease in temperature will result in higher relative humidity - hence the "relative". The other variable is dew point. 

If DB keeps his house around 65°F and is reporting an unmodified RH of 3%, we can easily determine the dew point (-18°). If we keep the dew point the same and plug in the -8° JH reported, we get an outdoor RH of about 61%. Maybe not the 75% DB claimed, but it's in the noise vis a vis your guess of 25%.

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