# Heat Exhchanger Selection (what is kw/C)

• Su Solberg

#### Su Solberg

Hello, everyone.

I have a problem in finding a suitable heat exchanger for cooling coils.
I would like to cool down 28 lier/min; from 70 Celsius to at least 25 Celsius.

I wonder how to fit "kw/C"(performance spec.) to my case so that i can find a suitable heat exchanger.

kw/C is a measure of how much power (kw) the heatsink can remove for each degree C temperature it rises.
Once the heat sink reaches the temperature of the incoming hot fluid it is obviously not going to remove any more heat.

You can work out the amount of energy to be extracted each second to cool 28/60 litres of water by 45 C and then from the kw/c work out how much this will heat the heatsink.

Note - this is just an approximation - the kw/c is only correct for a certain amount of power. At very high or very low energy inputs it might not be accurate..

kw/C is a measure of how much power (kw) the heatsink can remove for each degree C temperature it rises.
Once the heat sink reaches the temperature of the incoming hot fluid it is obviously not going to remove any more heat.

You can work out the amount of energy to be extracted each second to cool 28/60 litres of water by 45 C and then from the kw/c work out how much this will heat the heatsink.

Note - this is just an approximation - the kw/c is only correct for a certain amount of power. At very high or very low energy inputs it might not be accurate..