Fujikura has developed a heat pipe that doubles the maximum heat transfer capacity of conventional products for cooling data centers and is compatible with the large amount of heat generated by CPUs for servers. A working liquid enclosed in the heat pipe circulates inside the heat pipe while being repeatedly changed into gas and liquid by heating and cooling, thereby transferring heat.

The internal capillary structure for circulating the working liquid of the heat pipe was improved for further performance improvement. As a result, even if a pipe with an outer diameter of 8 mm is crushed to a thickness of 4 mm and the thickness is suppressed, the standard of the limit heat transfer amount can be greatly improved from the conventional 55 watts to 100 watts per heat pipe. rice field.