4x12cm Liquid Cooler Aluminum Block

4x12cm Liquid Water Cooler Aluminum Block

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     The 4x12cm Liquid Cooler Aluminum Block is a 40mm x 120mm x 12mm aluminum cooling block through which water or coolant flows. There are two hose nozzles side by side on one short edge; the liquid enters through one nozzle, circulates through the M shaped channel inside the block and leaves through the other. The heat of the part sitting on its flat wide surface passes from the aluminum body into the liquid and is carried away from the block with the liquid.

     The internal channels are formed by extrusion, divided by 0.5mm thick fins, and the parts are joined into a single body by vacuum aluminum brazing; the leak rate is below 5x10⁻⁶ mbar.l/s. It operates between -40°C and 100°C. The block does not cool on its own: it is connected with hoses to a pump and radiator (or a chilled water source) and used in a closed or open loop.

     Its 40mm x 120mm wide surface is sized to carry 3 Peltier (thermoelectric) modules of 40x40mm side by side; for this reason it is mostly used to cool the hot side of Peltier modules. It is also used for liquid cooling flat heat sources such as computer processors, graphics cards, laser heads, power transistors and boards.

Key features:

     Wide surface for 3 Peltier modules: The 40mm x 120mm flat surface takes 3 Peltier modules of 40x40mm (such as TEC1-12706) side by side; the thin 12mm body keeps the assembly slim.

     M shaped internal channel: The liquid circulates through an M shaped channel inside the block; 0.5mm fins increase the surface in contact with the liquid and heat passes from a wide surface into the liquid.

     Vacuum brazed sealed body: The parts are joined by vacuum aluminum brazing; the leak rate is below 5x10⁻⁶ mbar.l/s.

     Two hose nozzles on the same edge: The inlet and outlet nozzles sit side by side on one short edge; the hoses are routed from one side and the block fits in tight spaces.

     Light aluminum body: At about 65gr it adds little load to the assembly; the aluminum surface transfers heat quickly to the liquid.

Features:

• Product type:    Liquid (water) cooling block
• Model: 4x12cm Liquid Cooler Aluminum Block
• Cooling method: Liquid / Water; heat is transferred from the aluminum body to the liquid flowing through the block
• Internal channel: M shaped liquid channel
• Channel structure: Extruded channels, 0.5mm fins
• Construction: Vacuum aluminum brazing, single body
• Leak rate: below 5x10⁻⁶ mbar.l/s
• Hose nozzles: 2 pieces, on the same short edge; inlet and outlet direction does not matter
• Compatible hose: silicone or PVC hose with an inner diameter of about 7mm - 8mm
• Peltier fit: 3 Peltier modules of 40x40mm (TEC1-12706 etc.) side by side
• Compatible coolants: Water, distilled water, antifreeze coolant suitable for aluminum
• Use: Closed loop with pump and radiator, or open loop with a chilled water source
• Operating temperature: -40°C / 100°C
• Material: Aluminum
• Color: Grey (natural aluminum)
• Fin thickness and spacing: 0.5mm fins, about 1mm spacing
• Inner hole diameter: 5mm
• Dimensions: 40mm x 120mm x 12mm (excluding hose nozzles)
• Weight: about 65gr

Usage information:

• Fit the hoses on both nozzles and tighten them with clamps or cable ties. One nozzle is the inlet and the other the outlet; the direction does not matter.
• Place the part to be cooled (Peltier, processor etc.) on the flat wide surface of the block with a thin layer of thermal paste and fix it with even pressure; air gaps reduce heat transfer.
• Connect the block to a loop with a pump and radiator; fill the loop with liquid and run it before powering the electronics, and check that there are no leaks and that the air has been purged.
• When used with a Peltier, place the block on the hot side of the Peltier; the cold side faces the side to be cooled.

Areas of use:

•  Hot side cooling of Peltier (thermoelectric) modules
•  Computer CPU and graphics card liquid cooling
•  Laser head and laser diode cooling
•  Aquarium water Peltier chiller and heater assemblies
•  Peltier mini air conditioner assemblies
•  Peltier mini refrigerators and cooler boxes
•  Power transistor, MOSFET and driver board cooling
•  LED lighting board cooling
•  Liquid heating - cooling test setups

Precautions:

•  The block does not cool on its own; a pump is needed to circulate the liquid and a radiator or chilled water source to remove the heat. Pump and radiator are not included in the package.
•  Do not run a Peltier on the block without liquid circulation; the hot side overheats within seconds and the Peltier is damaged.
•  Do not use copper and aluminum parts together in the same loop; galvanic corrosion can cause leaks. Use distilled water or a coolant with corrosion inhibitor suitable for aluminum.
•  Do not bend the hose nozzles or pull the hose to remove it; the brazed joint of the nozzles may be damaged.
•  The operating temperature range is -40°C / 100°C; do not let the liquid boil.

Package contents:

•  1 Piece 4x12cm Liquid Cooler Aluminum Block
•  Note: Hose, clamps, pump, radiator, Peltier module and thermal paste are not included in the package.