Delta T Cooling time

[Jonathan Finlay]

Hi All,

I am trying to work out how long it would take hydraulic oil to cool down using a Air cooled heat exchanger.

The info is as follows:

ambient temperature: 42 degrees celsius
inlet oil temperature: 140 degrees celsius
outlet oil temperature: 50 degrees celsius
oil flow rate: 48 litres/min
tank size : 220 litres
surface area: 2 m²
air flow: 10 m³/sec

any help will be appreciated

thanks

[Kelly_Bramble]

Welcome to EE!

The following document does a real good job discussing the basics of designing a heat exchanger.

Heat Exchanger Design.pdf