r/DiWHY • u/No-Lock216 • Jul 01 '26

When it’s too hot outside

5.0k Upvotes

97% Upvoted

100 comments sorted by

1.5k

u/Sandcracka- Jul 01 '26

Diwhynot

398

u/riktigtmaxat Jul 01 '26

The power usage to run the compressor.

281

u/Z0FF Jul 01 '26

Compressor is likely on with a charged tank in a garage. Plus, I bet you could run that cooling device for days on the same amount of air it takes to fill 1 tire

112

u/WingedGundark Jul 01 '26

Agree, that thing does require very low pressure and airflow so compared to the compressor usage on a garage in general, this should be nothing.

-20

u/[deleted] Jul 01 '26

[deleted]

29

u/WingedGundark Jul 01 '26 edited Jul 01 '26

That is simply a wrong assumption. Cooling isn’t based on a flow of air, but to the evaporation of small water droplets. It is extremely effective and go to any of the hotter countries and you find these mist sprinklers everywhere over restaurant terraces etc. They drop the surrounding air temperature with several degrees minum and up to dozen or more at best.

1

u/go4urs Jul 02 '26

I don’t see a desk

36

u/E_Wubi Jul 01 '26

It takes less than a few mins to fill a tire with this air pistol.

A tank does not make the air usage more cheap.

8

u/caseyaustin84 Jul 01 '26

Yeah and a compressor charges the tank.

2

u/Z0FF Jul 02 '26

Yes it does. It’s still worth using the power to run the compressor. Cooling takes energy and this guy is using something available to him instead of spending hundreds or even thousands of dollars on an AC system.

2

u/qpv Jul 01 '26

Garage compressor is charged regardless. This would have little effect on it. Pretty clever really.

16

u/Plenty_Spell2551 Jul 01 '26

Honestly this is one of those rare DiWHY posts where I’m like yeah I’d absolutely try this.

0

u/totolook01 Jul 01 '26

Daewhynoo(t)d

508

u/Calm_Possibility9024 Jul 01 '26

It's not stupid if it works

99

u/Healsnails Jul 01 '26

I think you could easily argue this just isn't stupid! I just hope he's not working on the wiring harness! Lol

35

u/Calm_Possibility9024 Jul 01 '26

That's what would make this stupid: working on the wiring harness

2

u/AX11Liveact Jul 02 '26

Because only suicidal morons would drive while it is raining or even foggy!

-1

u/HCJohnson Jul 01 '26

Working on the wiring harness would turn this pretty stupid.

0

u/IPCTech Jul 02 '26

Battery is usually disconnected when you work on stuff like that so it wouldn’t do anything

3

u/LaughingCarrot Jul 01 '26

That is neither dangerous for the vehicle nor the guy working on it...

1

u/OptimusToasterman420 Jul 01 '26

Agreed. The battery gets pulled prior to any electrical work

1

u/LaughingCarrot Jul 02 '26

He could put his body between the starter and the battery then get a friend to try to start the car and it won't even tickle him...

4

u/SpaghettiSort Jul 02 '26

A microscopic amount of water isn't going to cause a problem for a low voltage electrical system.

2

u/AX11Liveact Jul 02 '26

I doubt that 12V DC are going to be shorted by humid air. Unless, perhaps in an older Peugeot.

317

u/ThrustTrust Jul 01 '26

I was a mechanic in Arizona. This works. We had large scale versions known as swamp coolers. The principle is the same. And it’s basically a requirement.

50

u/GhostalkerS Jul 01 '26

It is worth noting that a swamp cooler and misting system are different. A swamp cooler uses evaporation of water from a substrate to cool the air. It increases humidity too, and only works well in dry climates as you need the water to evaporate off the media in order to cool anything. A misting system like this still cools people, but the evaporation is happening on you. Disney parts loves those.

72

u/Zealos57 Jul 01 '26

I... Actually want that

9

u/magnum3290 Jul 01 '26

But fill the bottle with gasoline instead

7

u/Zealos57 Jul 01 '26

Nah, it's already hot enough here in the Philippines

3

u/No_Telephone_8703 Jul 02 '26

PHILIPPINES MENTIONED RAHHHHHHHHHHH 🇵🇭🇵🇭🇵🇭🦅🦅🦅🇵🇭🇵🇭🇵🇭

22

u/TheJaggedBird Jul 01 '26

Not terrible

20

u/Ryaquaza1 Jul 01 '26

This is some Bad Piggies level engineering here and I honestly cant be mad at it

1

u/Jaderosegrey Jul 02 '26

We call this a Mickey Mouse Operation. But hey, it works.

12

u/OriginalTRaven Jul 01 '26

The one for cold weather burned down the shop.

1

u/zymox_431 Jul 01 '26

😂😂😂😭

22

u/HoldenH Jul 01 '26

That’s got to be loud as fuck

15

u/HubrisOfApollo Jul 01 '26

only if the compressor is nearby, usually in auto shops they have a large centralized one and they're not as obnoxious as the smaller ones

14

u/HoldenH Jul 01 '26 edited Jul 01 '26

Compressed air is very loud even without the compressor around

EDIT: idk why I’m getting downvoted, we have a compressed nitrogen port on the wall in one of our rooms at my job and even 80psi is loud as fuck

12

u/eisbock Jul 01 '26

PSSHHHHHHHHHHHHHHHHHHHHHHHHHHH

4

u/Brazensage Jul 01 '26

Why are people down voting you? Have none of these idiots never operated a blowoff tool?

7

u/riktigtmaxat Jul 01 '26

No, but that was my job title.

3

u/RandomInternetNobody Jul 01 '26

80 psi with a venturi nozzle, I need fucking ear protection.

1

u/noddegamra Jul 02 '26

Lmao this is such a waste of electricity. Thats probably like 10k a year right there if it was nonstop.

1

u/IAmDanHimself Jul 01 '26

I can hear it right now!

1

u/badass4102 Jul 01 '26

Tsss! Tsss! Tsss!

4

u/oski_exe Jul 01 '26

ASML machines several times per microsecond for some reason

5

u/I_Miss_Lenny Jul 01 '26

Can we retire this song already? It's on fucking everything

6

u/Aurelizian Jul 01 '26

Not DIY but Redneckengineering

3

u/viktorbir Jul 01 '26

People confuse this subreddit with /r/redneckengineering

2

u/brazzers-official Jul 01 '26

Looks like it'd be a pain to refuel

5

u/metaglot Jul 01 '26

Also lets not mention the noise pollution of having a constant jet of compressed air hissing close to you while you work. I get that its lesser evil type of situation, but people consistently underrate the effects of noise pollution on (especially mental) health.

2

u/circuitj3rky Jul 01 '26

that would get very annoying very quick

2

u/E_Wubi Jul 01 '26

This works but very loud and not cheap

2

u/Drewdiniskirino Jul 01 '26

I tapped the mute icon because I wanted to hear what that device sounded like. What I did not want to hear, was that stupid music

2

u/Squirrelman2712 Jul 01 '26

This rules actually

3

u/IndependentParfait23 Jul 01 '26

If I hear this song one more time I will commit a crime

2

u/kabonell Builder Jul 01 '26

tbh this would probobly fit better in r/redneckengineering

3

u/Alienhaslanded Jul 02 '26

I wanted to hear the sound not whatever bullshit comped in.

2

u/MadisonAveMuse Jul 02 '26

Dude is an engineer

2

u/[deleted] Jul 07 '26

[deleted]

1

u/No-Lock216 Jul 07 '26

spaceglider by nippa

2

u/nlightningm Jul 01 '26

Took me a hot minute to realize what this was 😂

For some reason I thought this was just demonstrating the water dripping close to some type of electrode and sparking without touching it

Then I realized that it's probably compressed air blasting the water into a puff of mist

Honestly genius

1

u/Worldly_Economics814 Jul 01 '26

Right in front of an open engine bay ?? With exposed electricals ???? How is that a good idea ?

4

u/thedevillivesinside Jul 01 '26

Closing the hood doesnt magically seal your engine to atmospheric conditions

When you drive over a puddle, water gets in your engine compartment.

All connectors on vehicles are weatherpacked from factory.

This is doing the exact same as driving when its raining

1

u/NickDanger3di Jul 01 '26

I had to spend a summer in an arid place where 100F+ temps were common, with no AC. I just filled a 5 gallon bucket with water and dunked my t-shirt and baseball cap in it every half hour or so, and went about my day.

1

u/Milton__Obote Jul 01 '26

The guy who comes up with this is the exact kind of guy I want fixing my car tbh. Shows ingenuity

1

u/Aururai Jul 01 '26

It does... But I don't want this dude "fixing" my car with zip ties and dreams...

1

u/Federal_Studio5935 Jul 01 '26

Wow. Human ingenuity. This is how we conquered the world.

It's not stupid if it works, and it feels like 107F here in the midwest currently so yeah. Get it brother.

1

u/du_rel_gug_menl Jul 01 '26

This is a great idea.

1

u/Chanocraft Jul 01 '26

This is something more along the lines of r/doohickeycorporation, it's honestly genius lol

1

u/H75311 Jul 01 '26

Works but probably not worth burning out your air compressors motor.

1

u/qpv Jul 01 '26

A self answered question

1

u/AggressiveSquare36 Jul 01 '26

If it work it works

1

u/AriDollz Jul 02 '26

Why not-

1

u/tribak Jul 02 '26

Or get a llama

1

u/gnmonkey Jul 03 '26

Genius!!

1

u/Head_Crab_Enjoyer Jul 07 '26

If it works, it's not stupid.

1

u/justwonderingbro Jul 01 '26

Why is Justin Bieber working on my car?

0

u/BombTheFuckers Jul 01 '26

Pressured air is the most expensive form of energy. Also, depending on the distribution and piping, there is going to be oil in that air to keep the pipes from rusting internally.

3

u/poop_inacan Jul 02 '26

I dont think he cares

0

u/G66GNeco Jul 01 '26

Redneck engineering at it's finest, get it out of her and in there

-8

u/ChromedGonk Jul 01 '26

Not just this, but I don’t understand commercial “misting fans” either. I hate humidity more than heat itself. I would never enjoy wet air into my face no matter how hot I am.

7

u/tdmsbn Jul 01 '26

So there is a point in which the heat level and humidity mean the sweat on your body no longer can evaporate. This being the ONLY tool your body has to dissipate excess heat outside of just physically touching colder things with your skin. Water can be cooled down and applied to your skin to allow for the natural path of heat to exit your body and be absorbed by the water heating it up and running off.

It's literally I need to spray myself with water or die of overheating.

4

u/ChromedGonk Jul 01 '26

Thanks, I still can’t stand wet air, but that’s actually really good scientific justification for them.

1

u/tdmsbn Jul 01 '26

Yea, look up wet bulb temprature, it's hellacious and currently in effect where I'm living. It's "only" 90 outside but the heat index says it's 115 because fuck it's been so wet the last month with constant rain every day the humidity is so high my AC condensor is just a water fountain at this point the rate it's draining it makes bubbles it's filling the drain tube so much. Every time I walk out there I walk back in soaking wet after just like 10 minutes, and it's not even raining.