Waterblock

Waterblock is the component one which, in a Watercooling comes to replace traditional the ventirads present in each computer. It is a part in Cuivre or Aluminum, copper being generally preferred because of its higher thermal conductivity, in which channels are machined in which a liquid can circulate. It thus ensures heat exchange between the component to be cooled and the liquid coolant, often of the demineralized water added with liquid of automobile cooling, and various additives allowing various esthetic effects.

One can always quote two parts in a waterblock: the " maze" (labyrinth) which is the lower base and the signal the upper part. The signal being equipped with connections for the pipes, thus connecting the waterblock to the remainder of the circuit (of the Watercooling). The majority of the models have 2 connections (entered, left), but certain models have 3 connections according to the diagram: exit - input-output.

One can distinguish 2 types of Waterblocks using of the different designs in order to cool as well as possible the components of the computer (Processeur, Chipset, GPU. etc):

Waterblocks LPDC, Low or Low Pressure losses : The waterblock is dug broad channels offering a minimum of resistance to the circulation of the liquid, they thus compensate for the weakness of their heat-transferring surface by a high flow. The pionners of the Watercooling privileged these types of blocks, coupled to of BigMomma (radiators of cars), because they ask little of maintains (broad channels tending little to block itself). One finds relatively little in the trade of it nowadays, because they can be realized with very little material by the amateur, and ask for pipes of broad diameters with a pump offering a large flow.

Waterblocks HPDC, High or High Pressure losses : They use fine channels, privileging the heat-transferring surface to the detriment of the flow, and must be used with very fluid coolants because of their high pressure losses. It is the most widespread type of waterblock in the trade. They offer performances higher than those of waterblock LPDC. A pump offering a moderate flow is well adapted for these waterblocks, a too powerful pump would force and wear quickly.

Of other designs :

- Waterblock with impacts: they rest on the impact of jets at very high speed on barbs or hollows located on refine waterblock. This principle makes it possible to effectively release heat on a precise place, it allows the use of a metal base low thickness. These waterblocks generates moderate pressure losses. They are rather current in the trade. Their performances are higher than those of waterblocks HPDC.

- Waterblocks with microchannels: these waterblocks pushes to the extreme the principle of waterblocks HPDC. They are based on particularly expensive and complex manufacturing processes in order to arrive at the realization of the finest possible channels making it possible to have a considerable heat-transferring surface. They offer excellent performances, but only some models were carried out by impassioned; there thus do not exist in the trade.

The performances are given as an indication because they depend on many factors, in particular of the composition of the liquid coolant, the features of the pump and the bore.

Bonds and References

Dangerden manufacturer of waterblock
Innovatek another manufacturer
Alphacool with his range NexXxos
Swiftech
Cooling-masters one of the sites of references on all that relates to cooling in the computers
Nokytech another site of references

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