The relationship between low-side absolute pressure and high-side absolute pressure is called:

The relationship between low-side absolute pressure and high-side absolute pressure is known as the compression ratio. This concept is critical in refrigeration and air conditioning systems because it directly affects the efficiency and performance of the compressor.

The compression ratio is defined as the ratio of the high-side pressure to the low-side pressure. A higher compression ratio typically means that the compressor has to do more work to compress the refrigerant, resulting in increased energy consumption and heat generation. Understanding the compression ratio is essential for optimizing system performance, allowing technicians to make informed decisions about system design, compressor selection, and troubleshooting.

By monitoring and managing the compression ratio, HVAC professionals can improve system efficiency, prolong the life of the compressor, and ensure optimal cooling performance. This knowledge is vital for anyone looking to excel in commercial refrigeration and HVAC fields.