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post #11 of 14
Quote:
Originally Posted by PepeLapiu View Post

Now, I wonder why nobody makes delta temp probes. A dual probe that read ambiant abd water temp than extracts the delta from those two. That would b pretty popular I would think.

Wow, you want everything!

If you have water temp, ambient is going to be whatever your house thermostat is set at (for most of the year) or a use cheap room thermoneter.
With water and ambient, well, the math is pretty easy.
Just knowing deltaT isn't enough. If it's big, is it because water is warm or ambient is high? You really need all three.

Now what would be cool would be able to record all three over long periods of time (differing conditions) or when you switch out components.
But that gets WAY expensive.
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post #12 of 14
Thread Starter 
I don't think it would be all that expensive.
Just imagine an air temp probe and a water temp probe connected to a small pcb.
The pcb extracts the delta and feeds the converted signal to your controller as a modified temp reporting signal.

So if your ambient is 20C and your water is 26C the pcb feeds a 6C temperature to your controller. The controller thinks it's your basic normal temp reading.
I was actually considering making something like that and selling it on the forums as an artisan. I just don't know if I could produce it at an interesting price.

In fact, I was even thinking about designing a new controller.

Similar to the Lamptron but with a few improuvements.

You set min and max temps. Let's say 20 and 30C. At or below 20 C your fans run at set low speed. As temps increase toward 30C, the fans gradually increase speed toward set top speed. Beats the single step speed change of the Lamptron.

Also, the delta probe mentionned above would be included.

And you could also vary the pwm frequency to adapt your controller to specific fans. This way you could eliminate the humming sound produced by the Lamptron driven GT fans, and other similar fans.

And an other option would allow you to name or label your channels as opposed to simple Channel-1, Channel-2, and so on....
You could name a certain channel CPU, or TopRad, or Case -IN, and so on...

The Lamptron really has the potential to be a great controller with a few added features.
Edited by PepeLapiu - 1/9/14 at 10:01pm
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post #13 of 14
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

Just knowing deltaT isn't enough. If it's big, is it because water is warm or ambient is high? You really need all three.


I disagree. All you really need to measure your loop efficiency is the ambient/water delta.
Let's say that your desired delta is 5C. That is a very efficient loop as most run at 10C and up.
So your ambient is 20C and your water is at 30C. You know you have some room to speed up your fans and decrease your delta.

But if your water is still at 30C while your ambient is 28C, than there is no use speeding up your fans. In fact you could slow them down for less noise.

The delta T really is the best indicator of your loop's efficiency.

But not everyone in WC is aware of the significance of the delta T, hence my delta T probe pcb idea might not be very popular.

Really, my last build dates from about 10 years ago. And I am surprised that the controllers around are basically the same useless paperweights they were 10 years ago. The only things that really changed are the channel wattage increase on most controllers, and the bling factor.

I understand the WC market is rather small, but still. Who would ever need a controller with 20W/channel? Yet the manufacturers don't seem to move forward at all in the 15-20 years I have been building.
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post #14 of 14
Quote:
Originally Posted by PepeLapiu View Post

Quote:
Originally Posted by billbartuska View Post

Just knowing deltaT isn't enough. If it's big, is it because water is warm or ambient is high? You really need all three.


I disagree. All you really need to measure your loop efficiency is the ambient/water delta.
Let's say that your desired delta is 5C. That is a very efficient loop as most run at 10C and up.
So your ambient is 20C and your water is at 30C. You know you have some room to speed up your fans and decrease your delta.

But if your water is still at 30C while your ambient is 28C, than there is no use speeding up your fans. In fact you could slow them down for less noise.

The delta T really is the best indicator of your loop's efficiency.

I'm thinking about when you change a component too. That would change the deltaT/fan curve.

But not everyone in WC is aware of the significance of the delta T, hence my delta T probe pcb idea might not be very popular.

HA! most watercoolers have no idea what they're doing.

Really, my last build dates from about 10 years ago. And I am surprised that the controllers around are basically the same useless paperweights they were 10 years ago. The only things that really changed are the channel wattage increase on most controllers, and the bling factor.

I understand the WC market is rather small, but still. Who would ever need a controller with 20W/channel? Yet the manufacturers don't seem to move forward at all in the 15-20 years I have been building.

I also go back to the beginings of WCing. Procooling during the Cather days.

I've had WC systems with air and water temp and flow rate monitoring. What I found was that after a few weeks of watching the data you just start to know what's happening without even looking and the readouts become superfluous.

Good luck with your setup!
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Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
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2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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