Omar R Diaz Rodriguez: The Physical Formulation behind the Refrigerator

After looking at the device closely, one is able to observe the physical formulation behind it. A refrigerator is a common household appliance that consists of a thermally insulated compartment and a heat pump  that transfers heat from the inside of the fridge to its external environment so that the inside of the fridge is cooled to a temperature below the ambient temperature of the room. The purpose of the refrigerator is to keep whatever is put inside it cold. This device use an ingenious system to move hit from inside out by transferring heat. To create cold a fridge absorbs hot air and dumps it outside, furthermore for that it relays in a system of coils. 

With this object, an aluminum coil inside the refrigeration chamber forms the evaporator. The cooper coil that snakes around the outside of the chamber, under the fridges metallic shell, is the condenser. Nevertheless, both sets of coils are responsible for the heat transfer. They move the heat from inside the fridge to the outside air, leaving cold air behind in the chamber.

For this purpose, once the heat is absorbed by the coils, the cold air left behind needs to be preserved; hence insulation surrounds the fridge chamber. To this end, every space and every crack is field from the air tight sealed of rubber stripping around the door to the polystyrene and insulating foam in its walls. As a result, the insulation keeps the cold air in, and the heat out. Furthermore, that includes the heat that is expelled by the fridge itself.  

On the other hand, the evaporator coil is nestled between the fridge and the freezer. The coils are filled with refrigerant, a special mixture of chemicals called hydro floral carbons, which have the unique property of easily absorbing and releasing heat. Additionally, in order to achieve refrigeration the evaporator coil is strategically placed, since hot air rises it comes into contact with the evaporator coil that sucks up the heat leaving cold air behind. The condenser coil wraps around the extremities of the fridge getting rid of all the heat and expelling it into the cooler air around the fridge. 

With this object, to fully understand the physical formulation behind the product it had to be dissected. With the use of a screw driver the door was extracted, in addition the shelves and the outside layer of the refrigerator were taken out in order to analyzed the inside of the device. It is important to mention that to carry out this procedure, one must use safety equipment.

In addition, is important to specify that the refrigerator that is being analyzed is a cabinet-depth refrigerator. With this purpose, the consumer has some pros and some cons when buying this type of refrigerator. Some advantages of buying this model are that this one sticks out only a bit farther than built-in models and that usually accept extra-panels for to achieve a custom look. On the other hand, some disadvantages are that this model has less space than the deeper freestanding models and cost more.