wet towel at exhaust of PC?

[dfsgsfa]

why? to keep room cooler

same idea as little cooler with fan blowing wet tissue.

 

of coz not blocking all airflow, just to catch hot air

but i tried and at least it mentally feels cooler

 

is this good or bad idea?

[Oswin]

you are blowing hot air through a wet towel, how does this help the room to be cooler exactly?

[bellabichon]

So long as you're not allowing moisture to build up inside the PC, I see no reason why this would be a bad idea. It might be more straightforward to just run a fan or something though. 

[Senzelian]

Would work well in low humidity, but make sure that no water can get inside your PC.

Otherwise don't bother with it.

[bellabichon]

Just now, Oswin said:

you are blowing hot air through a wet towel, how does this help the room to be cooler exactly?

The idea is that the hot air exhausting from the PC gets trapped in the thermal barrier (wet towel) and heats the water instead of the air inside the room. I don't think that it would (scientifically) make a huge difference, but it could result in keeping the room slightly cooler.

[WereCatf]

3 minutes ago, dfsgsfa said:

same idea as little cooler with fan blowing wet tissue.

The type of thing you're thinking of is typically called a "swamp cooler" and it only works if the humidity-levels are very low where you live. Otherwise, it does nothing. Also, even if you did live in an area with very low humidity, that'd raise humidity-levels in your room and so eventually it might actually make you feel hotter.

[TVwazhere]

1 minute ago, bellabichon said:

The idea is that the hot air exhausting from the PC gets trapped in the thermal barrier (wet towel) and heats the water instead of the air inside the room. I don't think that it would (scientifically) make a huge difference, but it could result in keeping the room slightly cooler.

This would have been something LTT from 2017 would have actually been up for testing  

[Oswin]

2 minutes ago, bellabichon said:

The idea is that the hot air exhausting from the PC gets trapped in the thermal barrier (wet towel) and heats the water instead of the air inside the room. I don't think that it would (scientifically) make a huge difference, but it could result in keeping the room slightly cooler.

the towel will become warmer overtime, i dont see how it would work as a barrier, at least it might be for a short while

[bellabichon]

Just now, Oswin said:

the towel will be come warmer overtime, i dont see how it would work as a barrier, at least it might be for a short while

Sure, but the towel should continue to absorb thermal energy until it gets too hot, and the water begins to evaporate.

[Moonzy]

hot room -> hot and humid room

 

as for idea, yea technically you're catching some energy from the hot air to evaporate water, which have more heat capacity

so your room wouldnt heat up as fast

 

but the room have to be low humidity, as well as well ventilated, or you'll see mold growing soon

 

 

man you dont live in a tropical country do you, hot and humid sucks

[Senzelian]

6 minutes ago, Oswin said:

you are blowing hot air through a wet towel, how does this help the room to be cooler exactly?

 

4 minutes ago, bellabichon said:

The idea is that the hot air exhausting from the PC gets trapped in the thermal barrier (wet towel) and heats the water instead of the air inside the room. I don't think that it would (scientifically) make a huge difference, but it could result in keeping the room slightly cooler.

 

2 minutes ago, Oswin said:

the towel will be come warmer overtime, i dont see how it would work as a barrier, at least it might be for a short while

 

The water will turn into vapor, which requires energy, which is taken out of the hot air coming out of the PC, which will lower its temperature.

It's very well explained in this excellent video:

 

But the effect is rather small!

 

 

Edit:
Seems like we got a lot of TC fans here

[SupaKomputa]

Air ducting would be a solution

[dfsgsfa]

5 minutes ago, bellabichon said:

gets trapped in the thermal barrier (wet towel) and heats the water instead of the air inside the room. I don't think that it would (scientifically) make a huge difference, but it could result in keeping the room slightly cooler.

heat capacity of water is much greater than that of air, same energy (heat output) can heat up great volume of air hotter than that of water

[Dravinian]

It is hard to be sure about anything in life...except this, this I am sure will not work.

[dfsgsfa]

7 minutes ago, Oswin said:

the towel will become warmer overtime, i dont see how it would work as a barrier, at least it might be for a short while

even at extend heat absorbed by towel in this case is too hot and humid, just go and wet it again.

at least it shall delay the heating process

[spartaman64]

if you then throw the towel outside or something it might work but i feel like it will just make your pc hotter for very little benefit as to the temp of the room. 

get one or two of these instead and have one blowing air in and out of your window thats how i survived in my college dorm with no AC

[Lurick]

You either wet the towel a lot and then you have water dripping everywhere and possibly getting inside your PC, or you wring it out and make it useless. Additionally putting it at the exhaust of your PC is a great way to make sure you stuff up airflow and your PC heats up more and air just escapes elsewhere.

[dfsgsfa]

9 minutes ago, Lurick said:

You either wet the towel a lot and then you have water dripping everywhere and possibly getting inside your PC, or you wring it out and make it useless. Additionally putting it at the exhaust of your PC is a great way to make sure you stuff up airflow and your PC heats up more and air just escapes elsewhere

you totally misunderstood the concept.

assume pc has one side of exhaust to make thing simple

wet towel / cloth / socks / what ever is placed outside of pc, so even flooding shall not directly kill a pc, for normal person

that wet substance is not fully blocking the exhaust air and the hot air shall not cycle back to intake

[solarflare]

air circulation or AC is the only real solution. 

[Lurick]

5 minutes ago, dfsgsfa said:

you totally misunderstood the concept.

assume pc has one side of exhaust to make thing simple

wet towel / cloth / socks / what ever is placed outside of pc, so even flooding shall not directly kill a pc, for normal person

that wet substance is not fully blocking the exhaust air and the hot air shall not cycle back to intake

Assume a PC is in a perfectly sealed environment and that you don't just slap a wet rag right over the exhaust vent? Yah, that's not how it works.

[dfsgsfa]

39 minutes ago, Senzelian said:

TC fans

what is tc fans?

[Senzelian]

1 minute ago, dfsgsfa said:

what is tc fans?

TC = Technology Connections

The YouTube channel I linked above  

[dfsgsfa]

15 minutes ago, solarflare said:

air circulation or AC is the only real solution. 

seaking alternatives solution is what we shall do.

air con is bad for the world

[kelvinhall05]

You'd be lucky to feel a difference with your hand direcly behind the towel exhaust or whatever you wanna call it.

 

 

Not worth it.

[dfsgsfa]

18 minutes ago, kelvinhall05 said:

You'd be lucky to feel a difference

even some delay in room heating is already a success, so why not?