Koolance EXC800 Recirculating Chiller - Reviews

bladesofglory

HI GUys

I ordered the koolance exc 800 recirculating chiller yesterday afternoon, so I'm hoping to drop temps and post some reviews of the device to see is it a worth while investment for ultimate overclocks.

As soon as I have it running ill post pics and thoughts, and of course stats on cooling cpu on load.
Some spec below and pics






Koolance's EXC-800 is a portable recirculating liquid chiller rated at 800W, or 2730 BTU/hr (@25°;C liquid & ambient). Chiller control is based on one of four configurable temperature methods, including the option to lock liquid to ambient for avoiding condensation, or to an external K-type thermocouple sensor (not included). The integrated pump is a Koolance PMP-500, with a maximum coolant output from the unit of 11L/min (2.9 gal/min) and 7.5m (24.6ft) of static head.

Along with the local temperatures and user set-point, EXC-800 can report internal coolant flow rate, pump RPM, and condenser fan RPM on a customizable 2-line OLED display. An adjustable relay trigger output on the rear of the unit is available based on temperature.

Cooling capacity: 800W (2730BTU/hr) @ 25°C liquid/ambient
Temperature options: liquid set-point (1 to 50°C), optional external thermocouple set-point (1 to 149°C), liquid and ambient delta-T (± -50 to 50°C), external sensor and ambient delta-T (± -50 to 50°C).
Select only values you want displayed on the front 2-line OLED display (fixed or rotating)
Adjust pump speed with 10 level increments
Show pump impeller speed in RPM
Show coolant flow rate in LPM/GPM
Show condenser fan speed in RPM
Adjust audio alarm based on temperatures
Relay trigger can be configured as NO or NC and adjusted based on temperatures
Refrigerant: R-134a
Power input: 120VAC, 60Hz
Maximum power consumption (approximate): 450W @ 25°C, 650W @ 35°C
Designed for an operational temperature range of 0-40°C (ambient and liquid)
Reservoir capacity: 3 liters
G 1/4 BSPP threads on back for fittings
NOTE: Requires 120VAC, 60Hz input power. Keep unit upright at all times, and for at least 24 hours before applying power to ensure sufficient oil reaches the compressor.

Cuddlesworth

bladesofglory wrote: »

NOTE: Requires 120VAC, 60Hz input power. Keep unit upright at all times, and for at least 24 hours before applying power to ensure sufficient oil reaches the compressor.

Your aware we are 240 volt DC here right?

Serephucus

Actually we're 240 AC, but point made; that cooler won't work here. Turn it on when plugged in and you'll fry it.

bladesofglory

Serephucus wrote: »

Actually we're 240 AC, but point made; that cooler won't work here. Turn it on when plugged in and you'll fry it.

You have heard of a converter right!!!

Serephucus

Of course, but they're not the cheapest from what I've seen, and can be a little messy at times from what I've heard too. You know Overclockers, Specialtech, and WatercoolingUK all sell UK compatible chillers, right?

bladesofglory

Serephucus wrote: »

Of course, but they're not the cheapest from what I've seen, and can be a little messy at times from what I've heard too. You know Overclockers, Specialtech, and WatercoolingUK all sell UK compatible chillers, right?

Yes but there not a recirculating chiller, i.e need a pump.

bladesofglory

Serephucus wrote: »

Of course, but they're not the cheapest from what I've seen, and can be a little messy at times from what I've heard too. You know Overclockers, Specialtech, and WatercoolingUK all sell UK compatible chillers, right?

ps, Converters are NOT expensive. check amazon

bladesofglory

You do realize the whole electricity rage in Ireland is based on transformers, of step up and down voltage transformers.

Cuddlesworth

bladesofglory wrote: »

ps, Converters are NOT expensive. check amazon

Sure go nuts. I've had nothing but horrible experiences from cheap converters for sensitive electronics.

I'm also a little dubious of a product brought to market with 0 reviews.

Gumbi

In the meantime, do some overclocking with your rads in ice water :P

bladesofglory

Cuddlesworth wrote: »

Sure go nuts. I've had nothing but horrible experiences from cheap converters for sensitive electronics.

I'm also a little dubious of a product brought to market with 0 reviews.

Its a transformer Mate not a converter, but normally cheap items are cheap for a reason.

Serephucus

I think he means the water chiller.

Genghiz Cohen

bladesofglory wrote: »

Its a transformer Mate not a converter, but normally cheap items are cheap for a reason.

We all know he meant transformer.
The real question is why you appear to be so touchy about anyone questioning your methods.

bladesofglory

Genghiz Cohen wrote: »

We all know he meant transformer.
The real question is why you appear to be so touchy about anyone questioning your methods.

Well I didn't know. I'm not touchy just explaining my reasons.

Genghiz Cohen

You do come across as a bit agressive though. Maybe I'm reading you wrong

Anyway, whats the plan for mounting it?
Will you connect it directly to your loop or will it chill the air going to your rads?

bladesofglory

Genghiz Cohen wrote: »

You do come across as a bit agressive though. Maybe I'm reading you wrong

Anyway, whats the plan for mounting it?
Will you connect it directly to your loop or will it chill the air going to your rads?

Well on the instructions it just gets connected to the Water-block. It has the res, pump and of course the chiller in one, So im just gonna sit it beside the desktop or maybe place a mounting bracket right on top of the case.

Im just looking to get those temps down, and of course I will need to insulate for condensation if I go below ambient

BloodBath

There's not much point buying it if you aren't going below ambient. Good rads alone should bring water temps close to ambient.

bladesofglory

BloodBath wrote: »

There's not much point buying it if you aren't going below ambient. Good rads alone should bring water temps close to ambient.

Ah yeah I know, Im gonna run it low enuf in order to gain good temps, as at the moment the rads are no bloody good, I need chiller intervention in order to achieve results.

Anyone ever use one before?

Serephucus

How much rad have you got again? I find it difficult to think they'd be "no bloody good".

bladesofglory

Serephucus wrote: »

How much rad have you got again? I find it difficult to think they'd be "no bloody good".

Im using 1 x 480 and 1 x 240,

Serephucus

CPU and two GPUs, yeah?

bladesofglory

Serephucus wrote: »

CPU and two GPUs, yeah?

Yeah mate

Serephucus

Then you're doing it wrong. That's a ****tonne of rad for that amount of component.

What pump and fans have you got?

bladesofglory

Serephucus wrote: »

Then you're doing it wrong. That's a ****tonne of rad for that amount of component.

What pump and fans have you got?

My room is a very hot room, so regardless of how many rads I have the ambient temp is just way to high. I also wanna point out Im running my 3970 @ 5ghz with gpus over @ 1167mhz and a further 2 on the way,

I'm using penetrator fans along with a d5 pump.

So its the only way lad

BloodBath

How low can you go before condensation starts being an issue?

bladesofglory

BloodBath wrote: »

How low can you go before condensation starts being an issue?

You just need to insulate it, and don't go to low below ambient temp.

Key is good insulation and your grand.

btkm8unsl0w5r4

How many threads do you need for this build,it's been said a hundred times. Stop calling people mate.

bladesofglory

Bruce Nutty Confetti wrote: »

How many threads do you need for this build,it's been said a hundred times. Stop calling people mate.

Have a breather will you,

ED E

Pic of your rig? Good chance airflow setup is the cause Id say.

bladesofglory

ED E wrote: »

Pic of your rig? Good chance airflow setup is the cause Id say.

Airflow has feck all to do with it, if the room is close to 30C, you can have all the rad and fans you want, your never gonna drop below room ambient

Serephucus

bladesofglory wrote: »

Airflow has feck all to do with it, if the room is close to 30C, you can have all the rad and fans you want, your never gonna drop below room ambient

I'm not going to say what's on my mind (I've gotten smacked for that before) but sufficed to say you're completely wrong. The fact that you can build that sort of machine, and not know this, is astounding.

Post a picture, then we'll talk.

bladesofglory

Serephucus wrote: »

I'm not going to say what's on my mind (I've gotten smacked for that before) but sufficed to say you're completely wrong. The fact that you can build that sort of machine, and not know this, is astounding.

Post a picture, then we'll talk.

I'm sorry lad but your clearly not working or educated in the science field are you ?? Use some basic principals.

Or just research "thermodynamics theory" before you start getting trying to engage in a scientific conversation where facts are facts

Serephucus

I don't pretend to be formally educated in thermodynamics, but then again you don't have to be; it's a very basic principal.

Water cooling will not drop temperatures to sub-ambient levels, this is common sense. Anything greater than ambient however will be drastically affected by airflow. Your theoretical maximum obtainable temperature will not change, but your actual temperatures will be affected drastically.

In case you didn't understand:

Hot room. Turn a fan on. Feel cooler? Yes. QED.

bladesofglory

Serephucus wrote: »

I don't pretend to be formally educated in thermodynamics, but then again you don't have to be; it's a very basic principal.

Water cooling will not drop temperatures to sub-ambient levels, this is common sense. Anything greater than ambient however will be drastically affected by airflow. Your theoretical maximum obtainable temperature will not change, but your actual temperatures will be affected drastically.

In case you didn't understand:

Hot room. Turn a fan on. Feel cooler? Yes. QED.

No lad, you understand its the same room temperature air, Unless the air is fresh/ cool/ i.e chiller, air conditioning unit your temps will not be so drastic as you say.

There's no educating the UN-educated.


cooling the air that is cooling the radiator, and cooling the water to below ambient, then this is possible to obtain drastic temps differences

Serephucus

Ah, but you're assuming the person is the same temperature as the surrounding air. It's nowhere close, therefore heat transfer takes place.

Back at you.

I'm done with you. Best of luck to whatever, I won't be helping you with anything. Same as last time: You want advice, you get given it, you call it wrong with no proof to the contrary.

bladesofglory

Serephucus wrote: »

Ah, but you're assuming the person is the same temperature as the surrounding air. It's nowhere close, therefore heat transfer takes place.

Back at you.

I'm done with you. Best of luck to whatever, I won't be helping you with anything. Same as last time: You want advice, you get given it, you call it wrong with no proof to the contrary.

You understand for every small percent of heat removed more is generated, again Ill revert back to my theory.

This is fact lad,

Genghiz Cohen

Check out 'Wind chill'.

bladesofglory

Genghiz Cohen wrote: »

Check out 'Wind chill'.

Nice and easy for understanding

For an inanimate object, windchill has an effect if the object is warm. For example, say that you fill two glasses with the same amount of 100-degree water. You put one glass in your refrigerator, which is at 35 degrees, and one outside, where it is 35 degrees and the wind is blowing at 25 mph (so the windchill makes it feel like 8 degrees). The glass outside will get cold quicker than the glass in the refrigerator because of the wind. However, the glass outside will not get colder than 35 degrees -- the air is 35 degrees whether it is moving or not. That is why the thermometer reads 35 degrees even though it feels like 8 degrees.

My point lad is it WILL NEVER GET COLD THAN THE AMBIENT TEMPERATURE UNLESS ASSISTED I.E CHILLER.

Genghiz Cohen

bladesofglory wrote: »

Nice and easy for understanding

For an inanimate object, windchill has an effect if the object is warm. For example, say that you fill two glasses with the same amount of 100-degree water. You put one glass in your refrigerator, which is at 35 degrees, and one outside, where it is 35 degrees and the wind is blowing at 25 mph (so the windchill makes it feel like 8 degrees). The glass outside will get cold quicker than the glass in the refrigerator because of the wind. However, the glass outside will not get colder than 35 degrees -- the air is 35 degrees whether it is moving or not. That is why the thermometer reads 35 degrees even though it feels like 8 degrees.

My point lad is it WILL NEVER GET COLD THAN THE AMBIENT TEMPERATURE UNLESS ASSISTED I.E CHILLER.

Naw dawg!
Wind chill makes the air feel cooler. The higher the wind the more heat air at a given temperature can take from a body.

So lets say the air is at 20 Degrees.

If the wind is at 5MpH, then the air would have the same effect as stationary air at 13 Degrees.
Air at 20 Degrees, moving at 35MpH has the same effect as stationary air at 0 Degrees.
If that same air gets up to 60MpH it has the same effect at air at -4 Degrees!

You can test this right now, hold out your hand. Feel the air. Now swish your hand back and forth. The air feels cooler, it is sucking more heat out of your hand than when your hand is stationary.

With fast moving air, you can get below ambient.

Serephucus

All of the above is true, except for the last line. Doesn't matter how fast the air is moving, it won't get below ambient. The effects talked about are (I'm pretty sure) to do with rate of head dissipation.

This occurred to me last night: If airflow has no affect OP, turn you fans off.

(I just couldn't stay away it seems)

Gumbi

Serephucus wrote: »

All of the above is true, except for the last line. Doesn't matter how fast the air is moving, it won't get below ambient. The effects talked about are (I'm pretty sure) to do with rate of head dissipation.

This occurred to me last night: If airflow has no affect OP, turn you fans off.

(I just couldn't stay away it seems)

I agree. You can't go below ambient. Moving your hand quickly causes a perceived temperature drop because the heat is leaving your body more quickly (you are comin into contact with cooler air more quickly). Remember, it's a *perceived* drop relative to stationary air.

Genghiz Cohen

FINE!

Genghiz Cohen

Thinking about it more and I am completely torn on this.

What I've read makes it seem like you CAN.
But important people on the B&U internet forum said you CANT.

I just don't know what to believe anymore...

Serephucus

Imagine you're standing in a wind tunnel. The air being blown at you is simply cycled from within the same room (so no external air is brought in. Closed system) the room is kept at a constant 20°C.

If there's a slight breeze, you'll feel a little cooler.
If there's a strong breeze, you'll feel quite a bit colder.
No matter how fast the air moves, your skin temperature will never drop below 20°C, because that is the temperature of both the room, and the air being blown at you. (feeling and perceptions aside)

Gumbi

Thin about it. Where does the heat go? How can you remove heat from medium a if medium b is the same temperature a it?

Remember, the movement thing is to do coming into contact with cooler air more quickly, which causes a *perceived* drop in temperature *relative* to stationary air. The air is sill objectively the same temperature, it's just medium a loses the heat more quickly because of that. Once they are both the same temperature (medium b gains heat, medium a lose heat), they are equalised, in compliance with the laws of physics

BadCRC

Lol, the fail is strong in this thread.

800W component running @ 120 volts - you're gonna need a decent transformer to run that.

Then to top it all off an argument about wind bringing temps below abient...

Genghiz Cohen

Serephucus wrote: »

Imagine you're standing in a wind tunnel. The air being blown at you is simply cycled from within the same room (so no external air is brought in. Closed system) the room is kept at a constant 20°C.

If there's a slight breeze, you'll feel a little cooler.
If there's a strong breeze, you'll feel quite a bit colder.
No matter how fast the air moves, your skin temperature will never drop below 20°C, because that is the temperature of both the room, and the air being blown at you. (feeling and perceptions aside)

Gumbi wrote: »

Thin about it. Where does the heat go? How can you remove heat from medium a if medium b is the same temperature a it?

Remember, the movement thing is to do coming into contact with cooler air more quickly, which causes a *perceived* drop in temperature *relative* to stationary air. The air is sill objectively the same temperature, it's just medium a loses the heat more quickly because of that. Once they are both the same temperature (medium b gains heat, medium a lose heat), they are equalised, in compliance with the laws of physics

This is what is bothering me so much. What you say makes perfect sense.
But then you have charts like this:


That show that wind speed can make the air temp effectively lower than the ambient.

Gumbi

Again, that's a *perceived* decrease in temperature.

This is from Wikipedia, and is pretty much exactly what I said. I can't really highlight things as I'm on a phone.

The human body loses heat through convection, evaporation, conduction, and radiation.[1] The rate of heat loss by a surface through convection depends on the wind speed above that surface. As a surface heats the air around it, an insulating boundary layer of warm air forms against the surface. Moving air disrupts the boundary layer, allowing for new, cooler air to replace the warm air against the surface. The faster the wind speed, the more readily the surface cools.

..Brian..

TTL posted a vid on youtube where he connected like 40 120mm fans in push pull on a H100 and got temps like -18C on his CPU on a test platform. There was the usual uproar of air can't cool below ambient etc. Totally forgot about it until now so dunno if it turned out to be a spoof. Can't look it up now, in work!

Genghiz Cohen

Gumbi wrote: »

Again, that's a *perceived* decrease in temperature.

Perceived by what though?

If it's by the CPU thermometer, I think we have a winner :pac:

54kroc

..Brian.. wrote: »

TTL posted a vid on youtube where he connected like 40 120mm fans in push pull on a H100 and got temps like -18C on his CPU on a test platform. There was the usual uproar of air can't cool below ambient etc. Totally forgot about it until now so dunno if it turned out to be a spoof. Can't look it up now, in work!

That was a piss take.