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A video showing a "heating pad" in action A video showing a "heating pad" with a thermal camera. A phase-change material (PCM) is a substance which releases/absorbs sufficient energy at phase transition to provide useful heat or cooling.
In computing and electronics, thermal pads (also called thermally conductive pad or thermal interface pad) are pre-formed rectangles of solid material (often paraffin wax or silicone based) commonly found on the underside of heatsinks to aid the conduction of heat away from the component being cooled (such as a CPU or another chip) and into the heatsink (usually made from aluminium or copper).
For heat transfer between LED sources over 15 Watt and LED coolers, it is recommended to use a high thermal conductive interface material (TIM) which will create a thermal resistance over the interface lower than 0.2 K/W. Currently, the most common solution is to use a phase-change material, which is applied in the form of a solid pad at room ...
Thermal tape: These materials adhere to the bonded surfaces, require no curing time, they are easy to apply. Similar to thermal pads, they are typically shipped in a solid but flexible form and come in a variety of thicknesses larger than a few hundred μm. Phase-change materials (PCM): Naturally sticky materials, used in place of thermal ...
Phase-change cooling is an extremely effective way to cool the processor. A vapor compression phase-change cooler is a unit that usually sits underneath the PC, with a tube leading to the processor. Inside the unit is a compressor of the same type as in an air conditioner. The compressor compresses a gas (or mixture of gases) which comes from ...
Two main thermal characteristics of phase change are the enthalpy-temperature relationship and temperature hysteresis. PCMs tend to have varying enthalpy temperature relationships due to the fact that they are blends of different materials, but pure PCMs have a more localized relationship, which can be approximated by single values for the enthalpy and phase change temperature.
Thermal paste (also called thermal compound, thermal grease, thermal interface material (TIM), thermal gel, heat paste, heat sink compound, heat sink paste or CPU grease) is a thermally conductive (but usually not electrically conductive) chemical compound, which is commonly used as an interface between heat sinks and heat sources such as high ...
A thermal relief pad, thermal pad or simply thermal, is a printed circuit board (PCB) pad connected to a copper pour using a thermal connection. It looks like a normal pad with copper "spokes" connecting it to the surrounding copper. A typical pad on a printed circuit board is only connected to a few narrow tracks. A pad directly connected to ...