dumping a lot of heat

I'm thinking about building a biggish rackmount dummy load box. It
would simulate series resistance and inductance. Part of the problem
is that it will need to dump a lot of heat.

We are using copper CPU coolers on PC boards, which are great up to a
couple of hundred watts, but I'd like to do a kilowatt or two.

https://highlandtechnology.com/Product/P945

It would take a heap of expensive extruded heat sinks and fans to get
rid of a kilowatt. At 1 K/W, a pretty good heat sink, that's 1000 degC
temp rise.

A small hair dryer can dump a kilowatt. So some sort of red-hot
nichrome coils and a vicious fan might work.

I'd prefer to not use water.

I wonder if there is some sort of runs-red-hot power resistor.