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Wrap up

This week we have looked at how energy can be exchanged by a system and its environment in the form of heat and flow energy. I explained that heat transfer comes in three types: conduction, convection and radiation. We observed that many machines operate with flow across their system boundaries and can be considered to be in a steady state, which leads to the steady flow energy equation (SFEE) that is a special case of the first law of thermodynamics. We can use the SFEE in the analysis of devices such as hair-dryers and jet engines.

See the Key Relationships PDF at the bottom of the page to reflect on what you have covered this week

What’s Next?

Next week the second law of thermodynamics will be introduced along with an explanation of why it controls and limits everything we do.

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This article is from the free online course:

Energy: Thermodynamics in Everyday Life

University of Liverpool