It is worth mentioning that these systems have advanced a lot since the first versions. About to enter 2020 we can say that the level of security they present is very high and that they are gaining in performance and security to each new model that is launched on the market.
Does the maintenance of an AIO liquid cooling require filling of the cooling liquid?
The answer is: it depends, and it is based on the type of AIO we have. Most AIO systems are just that, All in one, where the set is airtight, but before proceeding we must understand several prime factors.
The problem is that, even if it is airtight, it is not impregnable either from the outside in, or from the inside out. Manufacturers are increasingly striving to find compounds to avoid the dreaded permeability. This effect is what causes the coolant to permeate the pipes, o-rings and sealing materials, after which their oxygen atoms (among others, depends on the composition) are filtered outside, thereby freeing up space in a chemical process known as volatility.
From the point of view of thermodynamics, volatility is a measure of the tendency of a substance to pass into the vapor phase or is also known as the ease with which a liquid evaporates.
Therefore, the use of a liquid compound with a lower vapor pressure is essential to avoid this effect, while the permeability will depend largely on the type of tube used by the manufacturer.
In this aspect the temperature also influences, since under certain degrees a tube can become more flexible, that is to say, it allows its molecules to take greater distance from each other, which favors the permeability and with it the evaporation of the refrigerant.
The type of liquid cooling AIO influences
Does that mean it is of lower quality? It doesn't have to, but we must be clear about one thing: all liquid cooling systems will have permeability and volatility, without exception. No matter whether it is airtight or open, AIO or custom, they all suffer, it is inevitable.
So why do we say that in an airtight AIO we can be calm? Why The degrees of permeability and volatility are negligible. They are systems that start from the fact that they will not be opened in many years, the materials, seals and liquid are designed for this purpose, so it will spend as much time running smoothly as we want.
How much? Well, it depends on the specific manufacturer and model of course, but with the guarantees that many manufacturers are currently giving, it is more than likely that they will work for almost a decade without problems. However, the problems of permeability and volatility will occur every second after filling in the factory and we will begin to notice its presence when once the AIO is installed and after several years have passed, the circular liquid is heard through the system, or air bubbles move through it.
An AIO will last as long or longer than a heatpipes heatsink
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