Someone please help me with my MORA 2 Pro Water Temperature
 

Yesterday, I hooked up my Laing DDC pump 12 volt to the Mora 2 Pro radiator connected to a resevoir to do some test.

My initial water temperature is 25C and after letting it run overnight, the water temperature rose to 28C...

Now that is an empty loop with no heatsource, just:

Resevoir - Pump - Radiator

Is the 28C normal? I am worried that after adding in all the components the water temperature will skyrocket!

I am running my MORA2 Pro Passive

Please help me german friends

the pump adds heat to the loop.
the rest depends on room temperature, and adjacent heat sources.

so if my room temp is 28 degree as well, that means my Radiator is doing its job i guess?

bsaically, yep.

also remember that in order to dissipate heat to the air (by convection),
there's always a temperature difference between the rad (hotter) and air (cooler).
The rad will always be hotter than ambient temperature if there's a heat source in the loop (in this case, the pump).
Else, will be at ambient temp (basically).

you should add fans to it
i have 2 mora2 pro, and i added 4 x 12cm on it

Well, I don't know about adding FOUR fans to it. But even one fan will significantly help if you have a real heat load in the loop like a CPU.

hey i did the same test a while ago, except with a passive 120.1 radiator in free air, also with the DDC. It got really warm to the touch after just 15 minutes, maybe 20C above ambient. This is strange for a low-wattage pump like the DDC, because the modded eheim 1046 and the CSP-MAG didn't get nearly as warm. Those pumps hardly got warm at all. Why the DDC gets so hot I have no idea.

The Mora 2 is much larger than a 120.1 radiator, and your temps are much better, so your radiator is doing its job like the posters above me say.

I guess he is worried if he runs just the pump, what happens when he runs comp on all day off a passive radiator like a mora 2. Am I correct with that assumption?

The the lowest temps you will ever get out off Wcing alone is the ambient room temp so that 28C is 100% normal. Just run the system and see what temps you get.

with a mora2 he won't toast anything,
however he might not get as low temperatures as desired,
depends mainly on which components are on the loop,
but a rad that big works well in passive mode.

hmm 20º C over ambient on a loop with only a DDC and no other heat sources?
sounds way too hot.
my 1048 or MCP600 dont get more than a few degrees over ambient.
"warm" depends on the user but,
anything over ambient seems warm. 20º is too much, IMO.
warm, hot and burning are several different things :) .

anyone with an MCP350 want to repeat the simple test to verify? maybe i just got a bad sample. it doesn't make sense for them to be so hot.

my MCP is nowhere near that hot and it has been running for the past 3 days non-stop

Wasserkool
Where is the radiator located, ouside the case? Is it getting enough room to let the heat dissapate?
Turn the pump off and let the rad cool off and see what temps you get every 1 hr?
Ambient room temps would be nice to know.
.28C=82F very high temps for overnight ambient temps for Canada, even for Cali in the summer. Only way you would get temps like that is when you are heating the room.

When i first started build my new rig and didn't wire a relay. I left the AC pump on a few days. The rad, bonneville core, got very warm because it was inside the case. I would get luke warm but i'm not sure of exact temps... maybe 35-37C.
That is about 10C-15C so 20C on 120.1 is not impossible.

ricecrispi - this is how my testing looks like:
http://img320.imageshack.us/my.php?i...sc041313pe.jpg

This few days has been exceptionally hot in toronto. My room temp hit 29C because I closed the window and door overnight and the computer is on.

There are 2 pumps connected to the system, the cylindrical resevoir has a eheim 1000 pump:
http://www.alphacool.de/xt/product_i...&cPath=5_26_27

From the specs, it dumps about 23W of heat in the water.

I also did some other test today. Before i left for work, I switched off the fan on the rad (120mm) and powered up the Eheim pump and closed the door. When i came home about 10 hours later, room temp is about 29C and water temp is 32C.

wasserkool, can you test it with a 120.1 radiator if you have one? I'm curious as to how these huge passive radiators performance compares to the 120.1 passive (which is unusable in a real system of course).

It appears you are running both pumps in series. As these are not "matched" for flow rate I'm not sure this is such a great idea (the lesser pump will simply provide resistance).
Also - I think your passive rad preformance will vary based on the orientation of the rad. You should get better performance with the rad oriented so that air can flow upwards through the fins - or maybe downwards and in the winter with the rad below a Canadian-cold window :)) If you want better performance, but still no fan, try putting a "chimney" on the upwards side of your rad. It doesn't have to be strong - construction paper and tape should work fine. BTW, this was a common mod for early Macs, which ran a bit hot and had no fan.
However... even with active cooling and huge fan(s) to push/pull air through your rad, it will, of course, never get below ambient

having the pump+res combo, bound to have higher temps,
all heat from the eheim will be dumped in the water.

True, but it's bought to be bolted to the lateral side of the case,
else takes up too much space.
He also has the wrong way up, the barbs are supposed to be facing the wall (in the picture).

For the chimney effect , you could try to cover the sides, leaving ony the openings in the bottom and top of the mora shroud.

sorry codt, i don't have 120.1 radiator for testing..the MORA is the only thing i have and its a total pain to get it from germany lol

I won't be using the eheim pump in my setup, it is just there to add more heat in water for testing. My actual setup will use 2 MCP350.

getting thermochill stuff anywhere else besides the UK is hard
... and expensive
why buy a 120.3 for about 100 € when you can get a Mora2 with that price tag,
or a nexxxos 120.3 for about 60 €
hard to compete, you could try a nexxxos xtreme 120

Terramax got it on the the nose. The inlet should be on the sides, inlet bottom, outlet on top. Very important on a large passive rad.

43 watts of pump heatdump is a large amount, about the same as a gpu not under load. 28-30C room temps are also pretty high 80-86F. I would say nothing is wrong with your temps. 100% normal and having mcp350's will improve those temps.

I would love to see temps of this passive setup when you set it up

Seconded! Please show temps when setup is complete.

alright guys..i promise i'll show the temp when my setup is complete...but first of all WHERE THE HELL IS MY CROSSFIRE MOBO AAAHH!!!

Haven’t got it yet?