• Capri Cables Private Limited

Heat Pipe Based Thermal Solutions

Capri Cables Private Limited offers a range of Heat Pipe based Thermal Solutions that protect, enhance and optimise electronics. A heat pipe is a heat-transfer device that combines the principles of both thermal conductivity and phase transition to efficiently manage the transfer of heat between two solid interfaces. A heat pipe can be described as a closed, evacuated tube lined with a porous structure on the inside walls. This porous structure is called "wick structure", and it is saturated with an appropriate amount of working fluid (typically water – for use in normal temperatures). When a portion of the heat pipe is exposed to heat: the fluid in the heated portion vaporizes (picking up thermal energy – latent heat of vaporisation); the vapour flows to the cooler portion of the container; the vapour cools and condenses (releasing thermal energy – latent heat of condensation); and condensed fluid is returned by capillary action to the hotter portion of the heat pipe. Heat pipes are totally passive heat transfer systems. This means they have no moving parts to wear out, and require no electrical energy to operate. They offer the design engineer low cost packaging and flexibility because they can be manufactured in a variety of different shapes and sizes as per the requirement and preferences of the customer/end user. Advantages: high thermal conductance – higher wattage removed; capability to control thermal flux; 20 to 40% reduction in weight and volume compared to thermal solution not using heat pipe; very long life (>10-20 years); cost comparable to conventional extruded heat sinks; no maintenance – no moving parts; and no restriction on orientation of heat sink.