Heat Sink Types And Design Ppt

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Heat sink types and design ppt. The general theory behind a heat sink is to increase the surface area of the heat producing device enabling a more efficient transfer of heat into the ambient environment. If the heat sink area is very large then very little heat will be dissipated through the case and θca can be ignored. They are relatively inexpensive once a design is made the manufacturing is highly automated and in most cases aluminum is the material used. Let s take a look at 6 common heat sink types.

1 extruded heat sinks. Extruded heat sinks are the utility infielder of our industry. 25 comments on heat sinks used for natural convection. The performance of extruded heat sinks can range from low to high.

Heat sinks are made of metals like copper or aluminum alloy. Extruded heat sinks come at a low cost and custom specifications can be easily manufactured. Heat sink orientation natural convection. The buoyancy effects of air forces hot air to move up and cold air to come down.

The majority of heat sinks are made from extruded aluminum. Cooling fluid from the reservoir was pumped 1 through the flow meter 2 to the heat sink 3. The process is useful for most applications. 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.

Heat sinks are an important element in circuit design because they provide an efficient path for heat to be transferred into the ambient air and away from electronic devices eg. Heat sinks consist of fan or cooling device to disperse heat from another object. Portable sink units portable kitchen sink cosmetology sink modern kitchen sinks healthcare portable sinks camping portable sink portable science sinks food and coffee cart portable sinks. Bjts mosfets linear regulators etc.

Fin thickness and fin pitch are important factors to consider while optimising the heatsink. Extruded stamped bonded fin and folded fin. Types of heat sink active heat sink. When the heat sink utilizes fan hsf it is active heat sink.

Here in part 1 we ll talk about the following heat sink types. In some heat sink data θca is lumped with the heat sink thermal resistance θsa. When the heat sink is added the case thermal resistance θca is nearly doubled because its lower surface area is lost to the heat sink. In computers heat sinks are used to cool cpus gpus and some chipsets and ram modules.

For the cooling purpose it incorporates a fan or cooling device. The mentioned heat sink is part of an experimental setup presented in fig. Orient the heatsink keeping in mind the direction of gravity.