COP of a Coldplate

[VYCanisMajoris]

Hi Everyone. i am doing a solidworks flow for a cold plate. SImiliar to the one in the picture. Aluminium base plate and copper tube with 50/50 glycol water mix. I need to determine the COP of the plate for different flowrates. According to my understanding COP= Qout/Win and Win can be calculated as Pressure Drop x Flowrate. Both my flowrate and pressure drop is very low, 0.125 L/min (massflow=0.00225 kg/s, Re=133) and around 300 Pa and with a Qout of around 100 W this results in very High COP which doesn't make sense when compared to other systems. Am I understanding something wrong or is it just because of the low flow rate and pressure drop? WHat is a better way to determine COP for a plate like this.

 

[btrueblood]

COP= Qout/Win and Win can be calculated as Pressure Drop x Flowrate.

Not quite.

 

[Snickster]

You have to consider the entire work required to produce the refrigeration effect. Most of the work is typically the work of the compressor in a cooling system but includes all energy input such as evaporator fans, etc.