Running Passive in ambient 30C temps

[duh_bing]

Actually, i think there is something to them that is overlooked a little. They hold loads of liquid too. The additional liquid will take it much longer for the temps of the water to rise high enough. In my setup it took approx 5 hrs to reach equilibrium and that is much longer then the time i play games. If i increase the volume of liquid, in terms of cost effectiveness(for my purposes) it shd be better.

[Long Haired Git]

Then the best rad for you may be no rad at all, but just a large storage container with a sealed lid. It can radiate a bit of heat, but if you only do quick bursts of PC usage (as in hours, not 24 x 7), then 20L to 50L takes a long time to heat up.

[mwolfman]

60-15=45
45-30=15
h/V=(15*4180)/((pumppower+CPUpower)*3600), asuming 100 Watt CPU and 27 Watt pump, that gives 0,137 h/l
5h gives 36,5 liter

[duh_bing]

Results for horizontal orientation


Heres a copy of the results for the vertical orientation


From the results of the tests. The vertical orientation seem to yield better results in terms of consistency. This is prob due to air moving in and out of the house, even if it is minimal. The using the rad in horizontal orientation to "move" air by heating it doesn't seem to provide any obvious benefits(prob due to tight spacing of the rad). Will dig out my 120mm fans to fix on the rad for another set of results(prob in 2 days?).

Bing

Disclaimer: Results are based on one test each, and most prob not conclusive. Getting results over a longer period will prob provide even more data. But i'm getting lazy

[duh_bing]

Originally Posted by Long Haired Git

Then the best rad for you may be no rad at all, but just a large storage container with a sealed lid. It can radiate a bit of heat, but if you only do quick bursts of PC usage (as in hours, not 24 x 7), then 20L to 50L takes a long time to heat up.

will have to find a place to stuff such a big res tho, hardly have any space left for walkin! *ok ok... its a guys room * On the serious note, I'd prob keep the rad And have as much water as i can (makes temp rise slower ya?)

Originally Posted by mwolfman

60-15=45
45-30=15
h/V=(15*4180)/((pumppower+CPUpower)*3600), asuming 100 Watt CPU and 27 Watt pump, that gives 0,137 h/l
5h gives 36,5 liter

Thats heat capacity / energy generated per hour?

[bobo5195]

yes thats heat capacity of water
4180 is the amount of energy 1kgof water can hold per 1 kelvin increase in temprature.
3600 amount of seonds in an hour.
15 temprature delta.

Who said anything about the rad having to be in the room?

If you want to give yourself more time you can always chuck some ice into the mix.

[duh_bing]

Originally Posted by bobo5195

Who said anything about the rad having to be in the room?

If you want to give yourself more time you can always chuck some ice into the mix.

I live in a high-rise in a city, its quite hard to attach something outdoors n make sure they don't fall off when i don't have wings

[bobo5195]

you could always use helium baloons :P

or even go for super WAF factor with some kind of copper pipe arty structure; its art dear.

[duh_bing]

Originally Posted by bobo5195

you could always use helium baloons :P

or even go for super WAF factor with some kind of copper pipe arty structure; its art dear.

I'd use them if you supply them

MAYbe it'd be some arty thingy... but quite broke after spending on modding and W/C materials :shrug: Will post pics when its up