What type of heat transfer does a refrigerator use?

pretty much all up there ^|||The fan draws air through the evaporator fins where it is cooled by conduction and circulated through the cabinet by forced convection to cool the food. That heat from the food is transferred into the refrigerant through the tube walls from the fins by conduction. That heat plus the heat of compression is rejected by conduction through condenser tubes and fins into the room and is carried away by natural convection. There is a small amount of radiant heat rejection by the hot condenser. Defrost water in an ubderneath pan is heated by conduction from part of the condenser heat and evaporates into the room.|||If you are talking about modes of heat transfer, it is primarily convection.





Convection, because the refrigerant is pumped through the evaporator and condenser piping. On the opposite side, air either rejects heat (evaporator), or absorbs heat (condenser).





IF the pipes are impossibly thin, only convection heat transfer occurs. But since real pipes are used, conduction is an extra layer of thermal resistance in the heat exchanger. We try to use conductive materials for piping, such as copper, such that the pipes have as little thermal resistance as possible.|||it uses liquid coolant running through the sides and absorbing heat as it goes. The heat is released at the bottom and is being continuously pumped through. That is why it is always hot underneath your refrigerator.