Thermosiphons are passive, two-phase thermal management components or systems that do not require mechanical pumps or other moving parts within the fluid loop. As they rely on gravity to return condensed fluid to the evaporator, Thermosiphons do not require any added electrical power to operate, making them more reliable than active cooling liquid loops in stationary applications. With the right design, thermosiphons can also help you reduce thermal management weight and volume by increasing overall system performance.
Thermosiphons operate on the same principles as heat pipes; energy is absorbed into the system where liquid is turned into vapor, vapor is transported by using the pressure difference between hot and cold regions, and rejected out of the system as the vapor is condensed back into a liquid. Low overall temperature drops enable isothermal cooling over large surfaces or across multiple devices. By leveraging these temperature differentials, Thermosiphons efficiently and reliably transport heat in a wide variety of configurations throughout the thermal solution. The high capacity of two phase cooling makes thermosiphons ideal for high heat loads in known usage conditions like Enterprise (server & networking), 5G Implementation within Telecom, and Power Conversion applications.