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what is this called?


mercer09

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From the net-

It's a window mounted automobile air cooling unit.  To cool the air it used a process known as latent cooling of vaporization,  in other words, cooling by water evaporation.

Water inside the cooler evaporates and in the process transfers heat from the surrounding air to evaporate the water, giving in return cool moisture-laden air inside.  The lower the humidity, the better it works. Because of the dry desert air, they were popular in the southwestern US in areas like California, Arizona, West Texas, New Mexico and Nevada, or anyone traveling through those areas. They were affectionately known also as "swamp coolers."

220px-Thermador_Car_Cooler.JPG

The technology was an after-sale add-on product for cars and has been around since 1930. It was popular from the 1930s through to the 1960s.  The basic unit looked like a canister-type vacuum cleaner.  You could use them on just about any car.

220px-Car_cooler_front_view.JPG
 

There were several manufacturers of car coolers, examples being Thermador, Classic Aire,  Sears (Allstate brand), which also carried the Thermador brand, and Star Mfg. The car cooler came in different models from "ram air" to "fan-powered" types. The "ram-air" type mounted on the passenger side window. It would only work when the car was in forward motion as the air was forced into the tube. It had a water reservoir that held about a gallon of water, which would provide "air conditioned" cooling for about 100 to 150 miles. The "fan-powered" model was designed to work when the car was not in motion or when moving at low speeds.

The car cooler is an outdated technology as refrigeration methods used today are more effective. I've seen them occasionally mounted on cars at local shows,, along with drive-in window trays with plastic hamburgers on the.  A cute novelty.

Terry

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My parents had one when my father taught a course at the university in Austin TX.  My brother and I figured out that a fast pull on the rope would scoop a bunch of water into the evaporation screen

and the excess would drench the person in the right rear seat.  What fun!

A slow pull was fairly efficient and kept more harmony in the car.  We kept it until we owned cars with real A/C.  My brother and I used it on our trip to the Seattle Worlds Fair from FLA in 1962 in our $275 

56 Ford.

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We called them swamp coolers because of the water they held. We used much larger versions to cool rooms in the house out west where it was dry. They worked great as long as the humidity was around 30% or less. Never knew what true AC was until I was almost grown. They are still sold today in some areashttps://www.gamut.com/p/window-evaporative-cooler-600-sq-ft-estimated-cooling-capacity-ODQ4MDIy

 

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