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Author Topic: Using plastic bottles to cool the air  (Read 303 times)
dan_b
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« on: July 16, 2017, 10:19:34 AM »

Clever!

Anyone here tried this?

http://www.cleverly.me/diy-ac/?ref=fb
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3.06kWp SolarEdge system with a split array:
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djh
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« Reply #1 on: July 16, 2017, 01:56:49 PM »

How does that work? Clearly not by compressing the air because that makes it warmer.
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MR GUS
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« Reply #2 on: July 16, 2017, 02:23:15 PM »

On a sunny facing you'd have thought that the warmed material (bottles) would actually raise temperature?

Maybe it is marketing hyperbole (_ollocks) & spin grabs more attention when called "air conditioning" because the west deems forced air along those lines? ..just like many technology claims there is the idea & the ideal ..from which only a small percentage of homes / locations are suitable. ..I think this "might" be one but whats to get in the way of a supposed renewable good news story & perhaps funding from duped patrons to pay for the western portion of a charity & keep them in jobs on the back of other peoples taxes!?

I'd prefer (as many here would) to hear & see the full story rather than a 1 min sound byte in order to believe in a low tech solutions validity, right now I cannot see it.
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Austroflamm stove & lot's of Lowe alpine fleeces, A "finger" of Solar Sad
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noah
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« Reply #3 on: July 16, 2017, 02:28:53 PM »

Air EXPANDING out of the bottlenecks i s cooler. Some energy must be absorbed by the action of compressing. If the air leaving (after being compressed and expanding) was the same or > temperature as the air entering then the system would disobey the st law of thermodynamics.
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MR GUS
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« Reply #4 on: July 16, 2017, 02:36:34 PM »

Why don't they call it an "air cooling technique" ..just checked, the charity doesn't but lazy journalism does / will "Something had to be done, so they've come up with the first electricity-free air conditioning." ..the power of click bait  fume

In another demo (with a fan) they take the temp of a nozzle using this technique ,...it seems impressive, however there is no comparison of air temp without the gadget from which to have some proper rationale.
« Last Edit: July 16, 2017, 02:39:56 PM by MR GUS » Logged

Austroflamm stove & lot's of Lowe alpine fleeces, A "finger" of Solar Sad
Noli Timere Messorem
Screw FITS ..it is, & always has been about the environment (said the penny-pinching Scotsman)
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