Hello,

How can I calculate / estimate the heat generated in a hydraulic circuit? I was able to estimate the pressure drop (PSI) thru the system lines due to frictional loss but not too sure how to estimate the heat generated by the hydraulic motor. Motor rating at 2000 PSI: input flow of 435 LPM output power of 81 kW

2000rpm speed.Hydraulic system pump output flow is 466 LPM at 2600PSI.

The system will be running for 2 hours continuosly. Can anyone help me estimate / cvalculate how much heat is generated and the temperature rise of the hydraulic fluid after 2 hrs of operation? Ambient temp is around 40degC. How can I select the required hydraulic cooler to suit the requirements?

I appreciate anybody's help.

Ed