Refrigerators utilize a refrigerant gas to cool their interiors. While many refrigerants exist, R-134a and R-438A are among the most commonly used. These gases absorb heat from inside the fridge and release it to the outside, creating a cooling effect.
Types of Refrigerant Gases Used in Refrigerators
- R-134a and R-438A: These are frequently cited as common refrigerants in modern refrigerators. They are chosen for their efficiency and environmental impact compared to older refrigerants.
- R-600a (Butane): This refrigerant is used in some domestic refrigerators, typically in smaller quantities (less than 100 grams).
It's important to note that different types of refrigerators might utilize different refrigerants. For instance, some older models may contain refrigerants that are now considered environmentally harmful and have been phased out. Furthermore, portable refrigerators or those designed for RVs may use different gas systems entirely. For instance, some portable refrigerators use propane or butane for cooling. But it is the refrigerant that cools the interior, not the propane or butane that powers them.
Understanding Refrigerant Function
Refrigerant gases work by undergoing a thermodynamic cycle. They absorb heat as they evaporate and release heat as they condense, facilitating the transfer of heat from the inside of the refrigerator to the outside environment.
Some refrigerators also exist which function through alternative methods, such as magnetic or acoustic refrigeration, however these are not as common.
