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But it's a dry heat..so is a bonfire.....

We joke, but that humidity makes a massive difference in both Cold and Heat.

The humidity will add another 6 degrees Celsius tomorrow, getting us to 39.

puke GIF
 
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Very useful chart though. Thanks.

Let's see...today will be 100°F with 26% humidity. That means my DIY swamp cooler will bring the temperature down to about 80°F for the cost of running a fan all day. That's fantastic.
The chart is pretty cool, showing how humidity affects the heat exchange rate across an evaporative cooler...but notice it doesn't show the time required, the volume of air being cooled, the size of the fan, or the energy input you need.

Even in ideal conditions, you won't get 8000W worth of cooling from a 50W fan. 😰
 

We joke, but that humidity makes a massive difference in both Cold and Heat.

The humidity will add another 6 degrees Celsius tomorrow, getting us to 39.

puke GIF

It is also just harder to breathe in the humidity. And these old houses get stuffy even with the windows open. I grew up without AC and you really feel like you can't breathe some nights. Even now I have a portable AC because our windows can't accommodate a window unit and it only gets the humidity down so much.
 

It is also just harder to breathe in the humidity. And these old houses get stuffy even with the windows open. I grew up without AC and you really feel like you can't breathe some nights. Even now I have a portable AC because our windows can't accommodate a window unit and it only gets the humidity down so much.

Yeah, I think it was last year we had a big heat 'dome' that didnt move, a bunch of folks in Vancouver died because a lot of Canadians still dont have AC units, and you are totally right, at the level of humidity where your body cannot figure out if you are sweating, or how to sweat, and you cannot breath, its miserable to say the least.

I grew up without AC, we didnt even have it in our place out on the coast for the first probably 10 years we lived here, because the temperature didnt demand it. Now though? It's gross.
 

Yeah, I think it was last year we had a big heat 'dome' that didnt move, a bunch of folks in Vancouver died because a lot of Canadians still dont have AC units, and you are totally right, at the level of humidity where your body cannot figure out if you are sweating, or how to sweat, and you cannot breath, its miserable to say the least.

I grew up without AC, we didnt even have it in our place out on the coast for the first probably 10 years we lived here, because the temperature didnt demand it. Now though? It's gross.

The other issue is if you have asthma, COPD, heart issues, the humidity, even if is challenging. As a kid with no AC, I was pretty much fine all year. Now I have a number of chronic health issues and the humidity has sent me to the emergency room more than once
 

The chart is pretty cool, showing how humidity affects the heat exchange rate across an evaporative cooler...but notice it doesn't show the time required, the volume of air being cooled, the size of the fan, or the energy input you need.

Even in ideal conditions, you won't get 8000W worth of cooling from a 50W fan. 😰
Sure. But this is tech people have been using for thousands of years. You just need a breeze blowing across some water, the fan is extra.
 

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