[FRIAM] evaporative cooling

[Sarbajit Roy]

Hi
You need a psychometric chart for this. Here's one off the internet
https://www.researchgate.net/figure/Evaporative-Cooler-Process-on-Psychometric-Chart-where-e-Efficiency-in-percent-T-DBE_fig5_271288974

On Wed, May 20, 2020 at 2:10 AM Gary Schiltz <gary at naturesvisualarts.com>
wrote:

> No scientific results here, but some anecdotal experience from about 40
> years ago. I spent two summers in west Texas (near Wink, birthplace of Roy
> Orbison). I was a field tech on a project studying Desert Side-blotched
> Lizards. Temperatures were often over 110 F in the early afternoon, with
> humidity dropping to single digits. We all lived in small sheet metal-sided
> cabins with metal roofs (it was an abandoned Air National Guard base). With
> no cooling, the internal temperature would have been totally unbearable,
> but they had evaporative coolers. The air from them was quite chilly, at
> times I would have to turn mine off or put on a sweater. Of course, at
> night, the desert cooled substantially.
>
> On Tue, May 19, 2020 at 2:59 PM <thompnickson2 at gmail.com> wrote:
>
>> A technical question for you high-desert scientists:
>>
>>
>>
>> How far can one take evaporative cooling?  With dewpoint temperatures in
>> the teens, how far down can the output of a swamp cooler be.  This relates
>> to a question I asked you all in the dead of winter: given a dewpoint
>> temperature way below freezing, what is the warmest shade temperature at
>> which an icicle can form.
>>
>>
>>
>> This is the kind of question that a Massachusetts resident would never
>> think of, let alone ponder on.
>>
>> N
>>
>>
>>
>> Nicholas Thompson
>>
>> Emeritus Professor of Ethology and Psychology
>>
>> Clark University
>>
>> ThompNickSon2 at gmail.com
>>
>> https://wordpress.clarku.edu/nthompson/
>>
>>
>>
>>
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