Does your room get hot with your phase change system?

[JWFokker]

I was discussing building an AC chiller with a guy at work and he's trying to tell me it's going to dump a lot of heat into the room because the heat generated by the compressor has to go somewhere. Now, I've never heard of anyone complaining about their phase change system making their room hot, but I really don't know much about it. Does your phase change system heat up your room?

[BillA]

get a 400W electric heater
should take ~ 10min to come to an understanding

cool 'factor' or cool room temp, but not both
mine are larger sure, but always outside the house (when I worked at home) or in an equipment room on the other side of a wall (noise too eh ?)

[JWFokker]

So it would heat a room pretty well, eh? That sucks. I suppose I could make an exhaust duct to go out the window though. I wonder why no one mentions this.

400W....roughly how much does the average overclocked system put out in heat I wonder?

[BillA]

what % of your psu are you using ? at what % efficiency ?
add your CRT

[Cathar]

Originally Posted by JWFokker

So it would heat a room pretty well, eh? That sucks. I suppose I could make an exhaust duct to go out the window though. I wonder why no one mentions this.

400W....roughly how much does the average overclocked system put out in heat I wonder?

Well remember that for the newer phase-change systems (Vapochill's and Prommy Mach II's) that the compressor power draw is around 220-250W. Throw in the heat of a stupendously overclocked CPU under load (~110-130W, maybe more), the heat coming off the PSU due to inefficiences (~15% ineffecicent at ~400W = ~60W of heat), throw in the heat from the GPU, disk drives and mobo, and you're already looking at an easy 450W of heat, maybe even 500W.

Definitely need to duct some of the heat away, even if you can't duct the compressor heat, then at least the condensor heat, otherwise a small room will get rather toasty fairly quickly.

[JWFokker]

Shouldn't the CPU and GPU heat (and possibly NB heat if I get a block for it) no longer be an issue as the heat would be dumped into the chilled coolant instead of into the room as with a radiator? I was wondering about the heat output of an average overclocked system (though I suppose there isn't an average overclocked system) so I could draw a comparison in heat output.

I figured the only heat source would be the compressor and condensor and PSU (and monitor of course). The compressor and condensor should put off the same amount of heat regardless of how much heat the CPU and other parts put into the coolant, right?

What makes the Vapochill and Prometia's different from a small AC compressor? Should I be looking at something other than AC units for a chiller?

[JWFokker]

Originally Posted by unregistered

what % of your psu are you using ? at what % efficiency ?
add your CRT

You think in the interest of overclocking I should get an LCD maybe? Keep ambient temps lower? Best Buy has this REALLY nice 19" Sony for not too bad a price.

[AngryAlpaca]

Shouldn't the CPU and GPU heat (and possibly NB heat if I get a block for it) no longer be an issue as the heat would be dumped into the chilled coolant instead of into the room as with a radiator?

Where does it go from the coolant?

You think in the interest of overclocking I should get an LCD maybe? Keep ambient temps lower?

Probably not. It's sort of reneging on the goal of most overclocking, as you're spending more and getting less than any other performance upgrade you could do.

[JWFokker]

I was joking about the LCD though it is very nice. 16ms response time so it's not too bad, but I'll wait for the 8ms screens to come out and get a 12ms screen for cheap (sort of).

So the temperature of the coolant affects the temperature of the condensor and compressor? I don't quite understand how that's possible. The compressor works at a constant rate, so heat output should be constant, right? The evaporator in the reservoir cools the antifreeze/alcohol mixture and the CPU and GPU dump heat into the coolant. So the coolant temperature fluctuates sure, eventually reaches equilibrium, but why should the heat output into ambient air variate?

[redleader]

Originally Posted by unregistered

get a 400W electric heater
should take ~ 10min to come to an understanding

cool 'factor' or cool room temp, but not both
mine are larger sure, but always outside the house (when I worked at home) or in an equipment room on the other side of a wall (noise too eh ?)

400 is about right for a very large chilled water setup, but most direct die setups are much, much smaller. The vapochill units use 1/6 HP compressors IIRC that max out at around 70-100w depending on the model. Most big homemade DD setups are in the 100-150w range.

Thats significant heat, but not all that much compared to whats comeing from the box + monitor combo. Probably about the same as upgradeing to a dual processor machine.

[Cathar]

Originally Posted by redleader

The vapochill units use 1/6 HP compressors IIRC that max out at around 70-100w depending on the model.

Vapochill LS's and Prommy Mach II's are in the 220-250W continual power draw range.

[redleader]

Originally Posted by Cathar

Vapochill LS's and Prommy Mach II's are in the 220-250W continual power draw range.

I can't find compressor specs for either, the Vapochill site doesn't actually list the compressor, just that its a danfoss R404a unit.

Do you have any links? I'm curious what they use. Though 250w for the entire unit sounds like a 1/3 HP compressor + some for the condensor fan but I'm just guessing.