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hmale · 08-08-2002, 12:53 PM

Hi guys,

I thought I would share with you where I am with my project.

I wanted to focus on the water cooling circuit and how I would measure and monitor temperatures as well as how I tested for circuit integrity.

The critical water temperatures we would like to capture are:
1. The temperature of the water at the pump outlet which equals the temperature of the water entering CPU1.
2. The temperature of the water exiting CPU1 and entering CPU2.
3. The temperature of the water exiting CPU2 and entering the chipset block.
4. The temperature of the water exiting the chip set block and entering the radiator.
5. The temperature of the water exiting the radiator and entering the air trap.

In addition we would like to moitor temperatures at the bottom of the case, the top of the case, as well as the temperature between the radiator and it's shroud.

We also need to capture and monitor temperatures aof each CPU.

A compunurse with 2 LED displays will monitor the temperatures of each CPU respectively.

What we want to focus on today is the use of a Digi-Doc to montitor the other temperatures.

Due to the size of the case the Digi-Doc's leads had to be lengthened considerably

In order to read the temperature of the water the Digi-Doc's thermisters were replaced with a smaller glass bulb encapsulated ones. The new thermisters were then inserted into holes that were drilled into the fittings that were going to be used. The holes were then sealed with multiple layers of marine goop to ensure a good seal.

Here is an example of a thermister inserted into an elbow fitting

In these pictures you can see a thermister inserted into the pump outlet fitting

In this pictures you can see a thermister inserted in an end cap fitting

In this pisture we show the test setup. In this phase we are looking for leaks. The circuit was run successfully for a continuous 48 hour period.

The coolant used during this phase consisted of distilled water, Silkolene ProCCA, radiator leak detector dye, and methylene blue.

Here is a closeup of the water blocks showing the elbows that are fitted with the thermisters that will be used for temperature monitoring.

In order to ensure that the electronics are protected in the event of a leak ocurring in the future, all PC boards will be protected by applying sveral layers of conformal coating.

That's it for now.

Cheers!

08-08-2002, 12:53 PM	#1
hmale Cooling Savant Join Date: Aug 2001 Location: MIami, Florida Posts: 169	Project Update (Pics) 56K unfriendly Hi guys, I thought I would share with you where I am with my project. I wanted to focus on the water cooling circuit and how I would measure and monitor temperatures as well as how I tested for circuit integrity. The critical water temperatures we would like to capture are: 1. The temperature of the water at the pump outlet which equals the temperature of the water entering CPU1. 2. The temperature of the water exiting CPU1 and entering CPU2. 3. The temperature of the water exiting CPU2 and entering the chipset block. 4. The temperature of the water exiting the chip set block and entering the radiator. 5. The temperature of the water exiting the radiator and entering the air trap. In addition we would like to moitor temperatures at the bottom of the case, the top of the case, as well as the temperature between the radiator and it's shroud. We also need to capture and monitor temperatures aof each CPU. A compunurse with 2 LED displays will monitor the temperatures of each CPU respectively. What we want to focus on today is the use of a Digi-Doc to montitor the other temperatures. Due to the size of the case the Digi-Doc's leads had to be lengthened considerably In order to read the temperature of the water the Digi-Doc's thermisters were replaced with a smaller glass bulb encapsulated ones. The new thermisters were then inserted into holes that were drilled into the fittings that were going to be used. The holes were then sealed with multiple layers of marine goop to ensure a good seal. Here is an example of a thermister inserted into an elbow fitting In these pictures you can see a thermister inserted into the pump outlet fitting In this pictures you can see a thermister inserted in an end cap fitting In this pisture we show the test setup. In this phase we are looking for leaks. The circuit was run successfully for a continuous 48 hour period. The coolant used during this phase consisted of distilled water, Silkolene ProCCA, radiator leak detector dye, and methylene blue. Here is a closeup of the water blocks showing the elbows that are fitted with the thermisters that will be used for temperature monitoring. In order to ensure that the electronics are protected in the event of a leak ocurring in the future, all PC boards will be protected by applying sveral layers of conformal coating. That's it for now. Cheers!