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Watercool HTSF2 – Heat Transformer

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Posted December 16, 2013 by Deton in Cooling


Release Date: Current widely available.
Price at time of Review: Retail $129.95


Precision craftsmanship, quality, sexy and excellent performer.


Protruding bare-bone brass connections
HTSF2 3x120 LT is a heat killer and has outstanding quality even though the port connections aren't the best eye-candy. It should definitely be on your short list.
by Deton
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Radiator 101

Some core designs have a type of fin inserted into them called a turbulator, which creates turbulence in the fluid flowing through the tubes. If the fluid flowed very smoothly through the tubes, only the fluid actually touching the tubes would be directly cooled. The amount of heat transferred to the tubes from the fluid running through them depends on the difference in temperature between the tube and fluid touching it.

So, if the fluid that is in contact with the tube cools down quickly, less heat will be transferred. By creating turbulence inside the tube all the fluid mixes together. This increases the temperature of the fluid touching the tubes so that more heat can be dissipated. This allows the fluid inside the tube to be used more effectively. It’s very rare to see this type of design in today’s PC radiators. They use much flatter tubes instead of a turbulator design due to high flow restriction.

Radiators are often made from high thermal conductivity material that has lower thermal resistance. Lower thermal resistance provides higher heat dissipation performance. Here are three main materials that are commonly found in the radiators that are best suited for thermal conductivity:

Time for a quick class in physics.

Thermal conductivity is the property of a material’s ability to transfer heat. Heat transfer across materials of high thermal conductivity occurs at a higher rate than across materials of low thermal conductivity. Given two surfaces on either side of the material with a temperature difference between them, the thermal conductivity is the heat energy transferred per unit time and per unit surface area, divided by the temperature difference. It is measured in watts per meter degree Kelvin.

Brass = 125 W/(m-K)

Copper = 401 W/(m-K)

Aluminum pure = 237 W/(m-K)

As you can see above, copper has the highest thermal conductivity at 401 W/(m-k). However, due to the high cost of pure copper, using it exclusively becomes a drawback. A full copper radiator would cost at least double the price of a brass/copper radiator. Aluminum may have higher thermal conductivity than brass but it’s not suitable to use with copper. This combination can galvanize after coming into contact with the coolant that acts as the electrolyte and then the copper will corrode the aluminum, ruining your components.

The radiator is an essential component in a water cooling system. No matter how kick-ass a water block you have, it can’t dissipate enough heat from the heat source to be effective by itself. Regardless of the CPU or GPU, they will overheat in a matter of minutes if you don’t have a radiator. So, the more effective a radiator, the better temperatures you will get in your water cooling system.

Let’s take a closer look at the HFSF2 360 LT.

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