Had the pipe been completely round at the heat source, a thicker grooved mounting plate would have been required as seen in Figure 6 b If conduction losses due to the base plate and extra TIM layer are still unacceptable, further flatting and machining of the heat pipes allows direct contact with the heat source as seen in Figure 6 c.
We generally stick with one of several mechanical attachment methods where we can meet Mil or NEBS shock and vibe requirements. The bottom side of the PCB contains the processor and chipset at roughly 50W. The result is a vacuum, similar to the space between the glass walls of the evacuated tube. Related Information.
From a mechanical perspective it may simply come down to heat sink stack height at the evaporator, i. Solar Products. Direct Contact If conduction losses due to the base plate and extra TIM layer are still unacceptable, further flatting and machining of the heat pipes allows direct contact with the heat source as seen in Figure 4 above. Performance The job of the heat pipes in the evacuated tubes is to rapidly transfer away the heat.
Figure 3. Furthermore, the heat pipes will operate in a horizontal position. The maximum heat output of an Apricus evacuated tube is around 65Watts. Returns Return Form.
References  Garner, S. If the 200mm standard pipe spacing is specified you will need 5m of pipe for each m2.
He holds over 70 patents in heat sink and heat pipe technologies and serves as a chairperson for both Semi-Therm and IMAPS thermal conferences in the San Francisco area. Contact Information: Heat pipes might seem like a new concept, but you are probably using them every day and don't even know it. Do I need to install a manifold?
Types of Heat Sinks There are numerous choices from zipper pack fins to extruded fin stacks, each with their own cost and performance characteristics. Unlike solid metal, the effective thermal conductivity of copper heat pipes varies tremendously with heat pipe length, and to a lesser degree with other factors such as the size of the evaporator and condenser as well as the amount of power being transported. Grooved Base It should go without saying that simply soldering a round pipe to a flat surface is far from optimal.