Contents
How are heat sinks attached?
The heat sink could be the copper foil of a circuit board, or a separate heat sink mounted onto the component or circuit board. Attachment methods include thermally conductive tape or epoxy, wire-form z clips, flat spring clips, standoff spacers, and push pins with ends that expand after installing.
What is the best material for a heatsink?
Heat sinks are designed to maximize the surface area in contact with the coolant fluid. Aluminum alloys are the most common heat sink material. This is because aluminum costs less than copper. However copper is used where higher levels of thermal conductivity are needed.
Do you know the orientation of a heat pipe?
TL;DR: Heat pipe orientation does matter, but depends on length & wick type, which you can’t really know without opening (destroying) the heat pipe. Metal mesh wicks are (probably) the most common and are affected significantly (10-20%+) by orientation.
How do you mount a TEM on a cold plate?
Paste mounting the other side: Apply a thin continuous film of thermal paste to the cold side of the module(s) and to the corresponding cold plate area. Lower the cold plate on to the modules and gently move the cold plate back and forth, exerting a uniform downward pressure. Continue this motion until you feel resistance.
What are the advantages of a sintered heat pipe?
One advantage of a heat pipe with a sintered powder wick is that it can work in any orientation, including against gravity (i.e., the heat source above the cooling source). The power transport capacity of the heat pipe will typically decrease as the angle of operation against gravity increases.
Which is better the top or the bottom of a heat pipe?
In your second diagram, the top half of the heatsink should perform better than the horizontal orientation, whereas the bottom half should perform worse, moving less heat to the heatsink fins. The horizontal orientation presents a sort of gravitationally neutral configuration.