In some cases plastic can be used to create a folded fin heat sink.
Heat sink types.
Extruded heat sinks are the most common type used today.
There are two distinct types of convection.
Convection fin arrangement and the manufacturing process.
However fin style is generally subject to the shape of the heat generating component.
In part 2 of our 2 part series on heat sink types we ll look at active heat sinks forged swaged single fin assembly and skived.
Heat sink is an electronic component or a device of an electronic circuit which disperses heat from other components mainly from the power transistors of a circuit into the surrounding medium and cools them for improving their performance reliability and also avoids the premature failure of the components.
Types and impacts on efficiency style.
To quantify the effectiveness of different types of heat sinks the volumetric heat transfer efficiency can be defined as where m is the mass flow rate through the heat sink c is the heat capacity of the fluid and t sa is the average temperature difference between the heat sink and the ambient air.
In many applications the device is an electronic component e g.
1 extruded heat sinks.
The drawbacks to this type of heat sink are the cost including manufacturing and ducting necessary in your system.
This means buoyance of hot air alone causes the airflow produced across the heat sink system.
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 electrically insulating chemical compound which is commonly used as an interface between heat sinks and heat sources such as high power semiconductor devices.
The device transfers heat to the heatsink by conduction the primary mechanism of heat transfer from the heatsink is convection although radiation also has a minor influence.
For the cooling purpose it incorporates a fan or cooling device.
Extrusions can be made into elaborate two dimensional shapes allowing them to dissipate more heat and are one of the most cost effective thermal management solutions.
There are a number of different ways to make heat sinks.
Heat sinks can be categorized based on three parameters.
Cpu gpu asic fet etc and the surrounding fluid is air.
The majority of heat sinks are made from extruded aluminum.
A heat sink also commonly spelled heatsink is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium often air or a liquid coolant where it is dissipated away from the device thereby allowing regulation of the device s temperature.
They are made by pushing hot metal through a steel die into the desired shape.
A heat sink s fin style can significantly influence its ability to release thermal energy into the environment.
In computers heat sinks are used to cool cpus gpus and some chipsets and ram modules.
