Refrigeration enables us to eat delicious fresh foods,
and enjoy refreshing drinks with ice

The Refrigeration Process


Since ancient times cultures have been interested in methods of cooling down beverages and preserving goods for consumption later. As far back as 1000 B.C. humans have harvested ice and snow during winters to cool down beverages and preserve foods. 

Here in the United States, it wasn't until the 1830's that Americans started refrigerating foods on a mass scale. It was in that decade that methods of ice harvesting and transportation became more efficient. The improved shipping methods and storehouses reduced ice wastage from 66% to 8%. As a result of the technological advances, ice from harvests in Canada and New England became mass-market commodities and were sold across the nation. Ice sales in New York went from twelve thousand tons in 1843 to one hundred thousand tons in 1856, just nine years later. The use of ice boxes in preserving food became common place in America.

Then with the help of several geniuses the modern refrigeration process was developed.


Jumping forward to today, we now use the same concepts to cool our foods down with reach in refrigeration, walk in cold rooms and to make ice in ice machines.

Refrigeration Cycle Diagram

Refrigeration Cycle Diagram


Your business has refrigeration equipment that involve the modern refrigeration cycle pictured above. 

If you were to open a properly operating fridge or freezer you would notice that the inside of the box is cold. Cold is the absence of heat thermal energy and your fridge is great at removing the heat energy inside. It does this by blowing hot inner air over an array of super cooled piping. If you were to open your fridge you would notice that a fan is running on a hanging box inside, that is what is cooling your product. The cold refrigerant gases flow through those pipes to absorb the heat from inside of the box.

The heated gas is then sucked back outside where it goes into the compressor outside of the box. Inside the compressor, the heated gas from your fridge comes in through the suction line, is pressurized and then shot out through the discharge line. At the condenser coil also outside of the cooled box, another fan blows the heat energy off of the gasses turning the gas into liquid. The liquid goes through a filter drier and back to the inside of the fridge where it is turned back into a cool gas repeating the cycle. 

All refrigeration equipment use the same general cycle.

We at Austin Air & Ice take pride in repairing and installing all refrigeration equipment.