Which method of refrigeration is most commonly used?

Vapor compression or mechanical refrigeration is the most commonly used method of refrigeration due to its efficiency, effectiveness, and versatility in various applications. This method relies on the principle of phase change in refrigerants, which absorb heat during evaporation and release heat during condensation. It typically involves a closed loop system with a compressor, condenser, expansion valve, and evaporator.

The significance of this method lies in its ability to achieve low temperatures efficiently, making it the preferred choice for residential, commercial, and industrial refrigeration systems. Its design allows for compact units that can be easily installed in various locations, catering to a wide range of cooling needs, from domestic refrigerators and air conditioning systems to large industrial chillers.

In contrast, other methods listed have specific applications. For instance, absorption refrigeration systems, while useful particularly in situations where waste heat is available or for specific applications such as cooling without electricity, are less commonly utilized on a broader scale compared to vapor compression systems. Lithium bromide, often used in absorption systems, has limitations in temperature range and can be inefficient under certain conditions. Ammonia compression systems are excellent for large industrial applications due to their efficiency in large-scale cooling; however, the toxicity and handling precautions required with ammonia make it less desirable for general use in