The modern air conditioning system cools an indoor space by using the refrigeration cycle. This refrigeration cycle works by controlling the level of energy in the system’s refrigerant: Some parts of ...

This refrigeration cycle happens again and again ... The ORI valve, which opens on a rise in inlet pressure, works in conjunction with the ORD valve, which opens on a rise in differential pressure ...

Today, the marvel of refrigeration quietly shapes our survival ... absorb heat from inside a fridge and release it outside. This cycle creates a cold environment where microbes struggle to ...

It's only taken 100 short years for the refrigerator to completely change humanity's relationship with food. This story is part of The Butterfly Effect, a Spark series about small inventions that ...