EcoRenovator  

Go Back   EcoRenovator > Improvements > Appliances & Gadgets
Advanced Search
 


Blog 60+ Home Energy Saving Tips Recent Posts Search Today's Posts Mark Forums Read


Reply
 
Thread Tools Display Modes
Old 08-06-13, 02:32 PM   #1
goblinsly
Lurking Renovator
 
Join Date: Jul 2013
Location: Slovenia
Posts: 17
Thanks: 0
Thanked 1 Time in 1 Post
Default Use water to cool down your apartment

Hey there,

Today i did a fun project, did it more or less for fun. I am taking water from toilete tank since it refills itself when its empty. Cold water goes through the copper pipe and then heated water goes down the drain ( literaly ). There is no pump since suction and gravitation does all the work. Fan blows air over the copper pipes and heats them.



I am wondering how good this system would work on those really hot days ... would it make a difference ?

Let us say the sistem will use 1 cubic meter ( 1000 liters ) of water per day. And lets say that the water will have 15C when it enters and 25C when it leaves. Soo 10C delta. Would this calculation be correct?

Q = 4.186 J/g K *1,000,000g * 10K = 41860000J

And since it will be done in 24 hours .... 86400 seconds ....

41860000J/86400s = ~490W of cooling per hour .... is this correct ?

If this indeed is correct and we assume that the apartment that is 20 square meters big and has 32C to to begin with ... i do belive this would make a small difference in the temperature ... and when its 32C ... every degree counts.

There is an eco note though .... a lot of water would be wasted ... water is very cheap here ... but its a shame to waste water. Maybe if it would be only used in those days where its just too hot ....

I can say that the air that fan blows into me is colder .... i could add ice to the toilete tank ..... it would make the kitchen hoter but the air blowing into my workspace would certanly be cooler. Soo, what do you think ?


Last edited by goblinsly; 08-06-13 at 02:35 PM..
goblinsly is offline   Reply With Quote
Old 08-06-13, 10:39 PM   #2
iamgeo
Apprentice EcoRenovator
 
Join Date: Aug 2010
Location: Lakehills, Tx
Posts: 168
Thanks: 4
Thanked 10 Times in 9 Posts
Default

If I understand this correctly you intend to continually flush the toilet, or let it "run" just to barely cool yourself down?
iamgeo is offline   Reply With Quote
Old 08-07-13, 05:24 AM   #3
goblinsly
Lurking Renovator
 
Join Date: Jul 2013
Location: Slovenia
Posts: 17
Thanks: 0
Thanked 1 Time in 1 Post
Default

The way it works though it doesnt interfere with the toilete in any way. It sucks the water out of the toilete water tank, and that tank refills itself as soon as the water drops below the certain level.

I do not plan to run this sistem, i made this to test how it works ....
goblinsly is offline   Reply With Quote
Old 08-07-13, 11:13 AM   #4
razor02097
Helper EcoRenovator
 
Join Date: Mar 2013
Location: 245862
Posts: 43
Thanks: 12
Thanked 3 Times in 3 Posts
Default

You will need a lot more copper tubing to make a difference with a fan. Even better if you can get a small radiator.

If you want to stick to a small amount of tubing consider a contact system such as a "cool shirt" which is nothing more than tubes that carry water attached to a t shirt. Since air isn't that great at heat transfer the contact based system takes that out. With the cool shirt you are basically cooling your whole core which allows the body to quicly get rid of excess heat.
razor02097 is offline   Reply With Quote
Old 08-07-13, 01:47 PM   #5
AC_Hacker
Supreme EcoRenovator
 
AC_Hacker's Avatar
 
Join Date: Mar 2009
Location: Portland, OR
Posts: 4,004
Thanks: 303
Thanked 723 Times in 534 Posts
Default

Water's greatest cooling effect come when it evaporates.

-AC
__________________
I'm not an HVAC technician. In fact, I'm barely even a hacker...
AC_Hacker is offline   Reply With Quote
Old 08-07-13, 03:22 PM   #6
jeff5may
Supreme EcoRenovator
 
Join Date: Jan 2010
Location: elizabethtown, ky, USA
Posts: 2,428
Thanks: 431
Thanked 619 Times in 517 Posts
Send a message via Yahoo to jeff5may
Default

Many people have used this approach to cool small areas. Just google the term:

Homemade air conditioner

It kinda works. It kinda works better if you use ice water. Good for spot cooling. Or camping.

jeff5may is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:43 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design