## How do I select a heat sink regulator?

When selecting a heat sink, it is necessary to classify the air flow as natural, low flow mixed, or high flow forced convection. Natural convection occurs when there is no externally induced flow and heat transfer relies solely on the free buoyant flow of air surrounding the heat sink.

## How do you calculate heat generated by electrical equipment?

Total internal power is 10 hp x 746 watts/hp – 7460 plus 100 watts = 7560 watts. Assume 10% forms heat = an internal heat load of 756 watts. Total internal power is 10 hp x 2544 BTU/hp = 25440 BTU/hr plus 100 watts x 3.415 BTU/hr/watt = 25782 BTU/hr. Assume 10% forms heat = an internal heat load of 2578 BTU/hr.

**What is heat sink efficiency?**

Fin efficiency Fin efficiency is one of the parameters that makes a higher-thermal-conductivity material important. A fin of a heat sink may be considered to be a flat plate with heat flowing in one end and being dissipated into the surrounding fluid as it travels to the other.

### How much power can a heatsink dissipate?

The product of collector current and voltage either side of this quiescent state produces less power dissipation, so 45 W is the maximum power dissipation to consider.

### What is the maximum allowable thermal resistance of the heat sink?

A heat sink will be required with a Thermal Resistance of less than or equal to 5.76°C/W.

**What is the most efficient heat sink design?**

The most efficient heat sink design from a geometrical standpoint is one that contains fins or pins to increase the surface area for heat transfer. Copper is one of the best materials to choose for heat sinks as it has a high thermal conductivity.

#### How do you select a heat sink for a Mosfet?

Before selecting a heat sink for power MOSFETs, some basic calculations must be made. The first step to selecting a heat sink is calculating the total power dissipation of the components in the circuit application. Power dissipation can be determined from circuit calculations or from efficiency measurements.