Say you store a vehicle outside all winter, if there was an usually cold week, say -20 degrees Fahrenheit for example, is it possible for the car to be colder than the -20 since it sat weeks prior to the -20 temps?
In: 594
The car seat no.
But in a more general sense, yes. Many things other than ambient temperature can influence the temperature of a substance, one of which is harnessed by the refrigeration cycle to power air conditioning systems. If you have a refrigeration system shut off for a long amount of time, it will eventually match the ambient temperature, including the refrigerant. But as soon as it starts running, the refrigerant is compressed, raising its temperature, which allows the energy to leave it before it is allowed to expand again, leaving it much colder than it was originally (which matched the ambient temperature at first).
A more simple example of the same principle: cans of compressed air. As you use them, they will get colder, even to the point of freezing water vapor from the air.
Latest Answers