The refrigerant flows through the coils on the back or under the freezer and through an expansion valve to the inside of the freezer. As the refrigerant passes through the expansion valve the pressure drops and hence the temperature also drops.
The noun MM has 1 sense: 1  1. a metric unit of length equal to one thousandth of a meter. 2  Meaning: 3  A metric unit of length equal to one thousandth of a meter. 4  Classified under: 5  Nouns denoting quantities and units of measure. 6  Synonyms: 7  millimeter; millimetre; mm. 8  Hypernyms (mm is a kind of...):
âºâº Definition: Microohm. The SI prefix micro represents a factor of 10 -6, or in exponential notation, 1E-6. So 1 microohm = 10 -6 ohms. The definition of a ohm is as follows: The ohm (symbol: Ï) is the SI unit of electrical impedance or, in the direct current case, electrical resistance, named after Georg Ohm.'m feeling lucky, show me some random units. The SI prefix micro represents a factor of 10 -6, or in exponential notation, 1E-6.