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  • Author Author: cquent
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water heat sink

cquent

Hello,

I want to size a water heat sink to dissipate the power of 16 MOSFET transistors of 300W each.

I would like to do this study to compare it to a finned radiator with fan.

However, I don't know how to go about it.
Can you help me?

Thank you

  • What kind of MOSFETs are you using that can operate at 300W ?

    What is the application ?

    Lot's are rated at such powers but few can actually do it in real life.

    My through the wall air conditioner is rated at less than 5kW abd uses an outside radiator with an 18" fan .

    It would be unusual to use air cooling at 5kW levels.

    5kW is to much for low cost PC cooling components so you'll need to get Googling and talking to people who make stuff for serious power.

    MK

  • Running water is a great way to conduct heat away from a concentrated heat source, but if it is a closed system, you still need to cool the water off with something like the radiator in a car. A heat exchanger for 5 KW could be as big as the radiator in a car - with a pump and a fan.