Mechanical Engineering
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# How to convert cable thermal losses [Watts] into enthalpy?

## Question

Hello fellow engineers

I have a certain thermal loss from my power cables due to total harmonic distortion, it's about 15Watts loss, and I somehow have to convert that into a enthalpy so I can calculate how much more my cooling unit has to work.

The cable is a 4G4 powerflex copper cable.

the ambient air temperature of the room is 40 degrees celcius.

What do I do?

Best regards

Rasmus

## Recommended Posts

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Maybe that might work.

Measure the thermal loss in watts for your particular time interval in which your cooling unit has to operate.

Multiply that thermal/ power loss by the time interval to calculate energy/ enthalpy mostly measured in Joules or BTU.

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You already know the power...its 15 Watts...one Watt is one Joule per second....just calculate the time element and "Bob's your uncle"!

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