Mini Desktop AirConditioner

Hi all..im farhan frm singapore and im 14 this year
this is my first instructuble and i want it to be great
Here is the MiNi Airconditioner ideal for desktop usage
and only with a burger box smalleness!!
gogo try one now and a Mini aircon is all yours

Step 1: What You Need

You will need a
.Burger styrofoam box
.A small exhaust pc brushless DC fan the thicker the width the better!!thin fans wont have mush airflow thicker ones better!
.Some mounting tape
.Multi purpose glue
.A huge big pc heatsink> longer fins...better
.Or and alternative to the heatsink is cutted out in can into rectangular shape with holes in it will do
.Power for the fan itself(self-known)
.Lots of ice
all these totalled up to be less then $5USD

Comments

[okhawaja]

that is a great idea for cooling i have seen many but you used heat sink that might work better than ever i saw and trying to make it but not having time.... soon will try and keep you update thanks

[spider_kyle]

I didn't read all the comments because there are like 150 of them, so this may have been said, but instead of using ice, throw some dry ice in there, it'll do a way better job, plus, you'll be surrounded by a mysterious fog of mystery. So intriguing.

[mohtaprashantrocks]

and die a chilly death

[spider_kyle]

Right, well assuming nobody is stupid enough to suck on the exhaust and not come up for air, it'll all be just fine.

[mohtaprashantrocks]

there's always a stupid enough person

[ilpug]

and pure carbon dioxide.

[Redstormx1]

it would work is you didnt use heat sink . the cold air ontop of the water/ice would be blown onto you.

You should by a cheap 2 dollar thermometer so you know when to change the ice.

[msinojia]

would it work if we don't use heatsink??

[thenowthehere]

then it would just be a fan.

[nibir]

What would happen if you added liquid nitrogen? The whole room would freeze ..... :D

[rtaznita]

You will freeze first before the whole room.

[mohtaprashantrocks]

i think the fan would freeze

[hnasit]

heat sink is good but it really works or not AND what is the price of teh heatsink????? can u tell !!!

[theawesomeninja]

Are you trying to say, "Heat sinks are good, but do they really work? And what are the prices for heatsinks?" ?

[vedant]

 hey dude i am not as good as you are at this so 1 question ! 
why do we need a heat sink ?? & how effective is it ?

[Schober]

Getting into the science of it, the heatsink is made of a material (typically aluminum) with a low specific heat (it heats and cools quickly). The water that the heatsink is in has a relatively high specific heat (takes quite a lot longer to heat and cool). By design the heatsink has a number of thin fins on it to increase surface area and increase the dispersal of heat. By placing the fins of the heatsink in the water the energy is rapidly removed from it.. As the air is pulled past the heatsink it gives some of its energy to the heatsink, that energy quickly flows to an area of lower energy (the ice water) through the fins.

This system may be made more efficient by placing the larger part of the heatsink in the water instead of the fins. This would increase the surface area that is coming in contact with the air and more quickly remove the energy from it. Because of how thick the base of the heatsink is, it is going to take longer for it to cool than the fins and will store some heat inside it. Because it takes longer to heat the water than the heatsink it is okay to store some of that heat so that it may be dispersed at a rate that the water is able to agree with. It's better to store heat in the base than to try to force it to absorb the heat from the air.

This should make the air coming out of the unit cooler but it will also mean that you will need to replace the water more frequently because the speed at which the energy flows will be increased.

[diegolay]

Can I use those "Coleman Ice packs" so i'll not spend water making ice?

[XOIIO]

Who cares if you use water? Just freeze whatever is left when it cools down, its going to do that before it evaporates.

[account3r2]

I wonder what would happen if you used cryogenic fluid... COLD WOULD HAPPEN!!! No, really..... it would be very cold. :D

[jvan0907]

Is it possible for usb powered?

[survivorwolf]

ye3s but the fan will turn slower because it is less voltage

[whiplash]

use a peltier module instead of ice so you dont have to have the ice frozen to begin with :)

[Wasagi]

Nice!!

[fly_boy_bc]

mcresearch When you are going to make a comment on a technical or scientific issue DON'T. Go and READ first!

[crazyboy007]

if you were to add water in with the ice, i suggest adding some salt in the mix. salt lowers the freezing temperature of water and thus allows it to get colder, so the AC is more effective. nice instructable.

[mcresearch]

Adding salt to the ice inside the cooler will not change the net entropy - i.e. the cooling power of the device will be the same.

[ScribbleMaster]

Adding salt will not change the net entropy, but the cooling power will increase: Because the freezing point of salt water is lower, the ice will melt faster, absorbing heat faster from the surrounding atmosphere (more surface area will be exposed by the accelerated melting). Because of air circulation, the temperature of the air leaving the system will never even near 32 degrees Fahrenheit, which is the effective temperature of the ice. However, if the air is cooled faster before it leaves the device, it will achieve a lower temperature, making the air colder than it otherwise would be. The downside is that because the heat transfer is accelerated by the salt, the ice will have to be replaced more often.

[power]

good idea :D I know how hot can singapore be during the afternoons cuz I live in malaysia must go eat one burger first :D

[rakuspirit]

This is a great idea. Any idea of how it could be modified to plug into a car cigarette lighter and cool my very hot car? I love the compact design and how you thought of using things that were unusual. Thanks for sharing. Linda RanchoCucamonga California

[zack247]

cigarrette lighters supply 12v, i think. try a pc case fan and hook it up to one. mount it facing you and good luck!

[rakuspirit]

thanks...another great suggestion.

[zack247]

no problem :)

[Davidfromcali]

They sell fans that work off of the cigarette lighter at Pep Boys for less than $20, I own one. They have a clip or you can drill and mount it. Check anywhere in your area that sells accessories for truck drivers, dash fans have been around since before WWII. Mine's even 2 speed!

[rakuspirit]

wow thanks David....I never knew that....I'll check Pep Boys tomorrow.

[twhaley]

neat little gizmo, btw, his English is alot better than my Mandarin!

[edmars]

make it big sis

[LuminousObject]

Wow, this is genius! This will be perfect for the boat when I don't feel like turning the built-in AC on!

[quesoman]

Your spelling could use some work. And I recommend you add more detailed instructions as to where to put the ice. I was slightly confused on that part. Over all it's a great idea so I'll give you 4/5 for now. If I check back in on this in a month or so and find that the mess-ups have been fixed I'll bump up my ratin but for now, 4 stars. Contests on getting your first ible in a featured guide and keep up the good work

[Hasersys]

Heh, he spells better than me, and I am 25. Oh, and I am from America unlike him. I like this! My rats my have a ac unit now!!!! My rats are gracious.

[dzent1]

Yeah, bump up his "ratin", Mr. Champion Speller. And did you mean "congrats" instead of "contests" in that last sentence?