Two-Phase Heat Transfer Technologies
Two-Phase Heat Transfer Technologies are the cornerstone of Novark's product line. There are numerous applications of two-phase fluid flow technologies in a variety of industries. They are also are a key component of most thermal management solutions. These technologies feature much higher thermal conductivity than solid copper and near-uniform temperature gradients, essential for effective thermal management devices. Two-Phase Heat Transfer Technologies are differentiated across their numerous applications by the structure of their wick, the working fluid used, and their shape.
Ultra-Thin Heat Pipes
The ultra-thin heat pipe is formed either by flattening a thin-walled standard heat pipe with a wick structure in between. The wick structure is either a sintered copper powder section on one side of the heat pipe wall, or a copper wire mesh or fiber sintered in the center of ...
Heat sinks are an important component that helps move the flow of heat away from a hot device. They are the primary means of forced-convection heat dissipation in thermal management solutions, and are one of Novark's core products. Heat Sinks are differentiated by the method of manufacture of their fins, which define their cost and thermal performance. Several types of heat sinks that we manufacture which include skived heat sinks, folded fin heat sinks, extruded heat sinks and interlocking fin heat sinks.
Folded Fin Heat Sinks
Folded fin heat sinks are created by folding a single sheet of metal multiple times to create a dense finned structure. This fin structure is then soldered, brazed, or bonded using thermal epoxy, to the heat sink base. This allows the base and fins to be of different materials...
Interlocking Fin Heat Sinks
Interlocking fins are manufactured by machining and stamping the fins from thin metal sheets. The fins are then interlocked into a structure that is either soldered or press-fit onto the thermal module. The fins can be manufactured to incorporate channels for the insertion of ...
Cold plates are the liquid-cooled heat dissipation method of choice, and are an important product in Novark's thermal solutions. Cold plates are defined by their method of manufacture, which defines their performance and application.
Vacuum-Brazed Cold Plates
Vacuum-brazed cold plates are created by machining two metal plates with interior channels and fin structures (often folded fins and skived fins), which are then carefully sealed together inside a vacuum chamber. A filler metal with a lower melting point is melted into th...
Tube-Embedded Cold Plates
Tube-embedded cold plates are manufactured by press-fitting tubes into grooved plates, either partially or fully; this is called “dry bonding”. The tubes are then further machined to a specified flatness requirement to ensure good thermal contact with the heat source, an...
Novark Technologies pushes its design and manufacturing capabilities forward every year. The following technologies have been successfully prototyped at Novark Technologies, and Novark attempts new techniques and technologies on a consistent basis.
Pulsating Heat Pipes
Pulsating heat pipes are made from a long capillary tube which is bent multiple times, or from a rectangular plate with capillary channels manufactured in it. The bends are placed at the evaporator and condenser areas of the heat pipe. This type of heat pipe does not require a...