Dry heat

[sack]

Just got back from my two mile walk, here at home in Chicagoland. When i returned to the house i was soaked and the temperature was only in the low 90's. When i took the family to visit my brother in Beaver Dam Arizona it was over 105 degrees and over, the entire time, we climbed up hills and walked all over and never broke out in sweat. Maybe it's so hot and dry, that the sweat evaporates before it puddles up. Anybody have an explanation or theory, just trying to figure it out. ???

 

[Ginseng]

Just got back from my two mile walk, here at home in Chicagoland. When i returned to the house i was soaked and the temperature was only in the low 90's. When i took the family to visit my brother in Beaver Dam Arizona it was over 105 degrees and over, the entire time, we climbed up hills and walked all over and never broke out in sweat. Maybe it's so hot and dry, that the sweat evaporates before it puddles up. Anybody have an explanation or theory, just trying to figure it out. ???

That's pretty much it.

Wilkey

 

[sack]

Just got back from my two mile walk, here at home in Chicagoland. When i returned to the house i was soaked and the temperature was only in the low 90's. When i took the family to visit my brother in Beaver Dam Arizona it was over 105 degrees and over, the entire time, we climbed up hills and walked all over and never broke out in sweat. Maybe it's so hot and dry, that the sweat evaporates before it puddles up. Anybody have an explanation or theory, just trying to figure it out. ???

That's pretty much it.

Wilkey

You i have to believe, thanks Wilkey!

 

[sonuvabum]

Yep. Evaporative cooling tends to work much better in AZ and NV than it does in Chicago or Houston.

 

[MX]

Low Humidity: Little to no water vapor in the air. Allows for the sweat to evaporate quickly and cool the body.
High Humidity: Air is at the saturation point, slowing the evaporation of sweat, causing the body to have trouble removing heat.

RH is the % of water vapor already in the air. 100% should = rain, fog, or mist. But, don't tell that to the Texas Gulf Coast. I can not count the number of day that the temp 100 and the RH was 100 and there was not a drop of rain in sight.

Heat Index: an index that combines air temperature and relative humidity to determine an apparent temperature — how hot it actually feels. The human body normally cools itself by perspiration, or sweating, in which the water in the sweat evaporates and carries heat away from the body. However, when the relative humidity is high, the evaporation rate of water is reduced. This means heat is removed from the body at a lower rate, causing it to retain more heat than it would in dry air.

Hope this helped

Tim

 

[Ginseng]

I must be getting concise in my old age.

MX is right on the ball. Evaporative cooling is why hot, dry places like some sidewalks on the Las Vegas strip continually mist the air above the people. The water mist evaporates into the air and in so doing, cools the air down. Plus, any droplets that fall on you then evaporate bringing evaporative cooling directly to your skin.

Wilkey