How does a fridge cooler work

The CFC is initially a liquid because of intermolecular interactions (of the London dispersion type). Imagine that the interactions involves 4 kJ of energy but cooling the cheese to 5 °C we liberate about 6 kJ of energy it should be clear that more energy is liberated than is needed to overcome the induced dipoles. We say that 

Converting the liquid CFC to a gas (i.e. boiling) is analogous to putting energy into a kettle, and watching the water boil off as steam. 

A similar mechanism operates at the heart of an air-conditioning mechanism in a car or office. 

Forming bonds and interactions liberates energy breaking bonds and interactions requires the addition of energy. 

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