What is a requirement for systems design pressure in a refrigeration system?

A requirement for systems design pressure in a refrigeration system is that it must not be less than the saturation pressure at the ultimate bursting pressure. This standard is vital for ensuring that the system can withstand extreme conditions without failing. The saturation pressure refers to the pressure corresponding to the refrigerant's phase change at a given temperature. By ensuring that the design pressure is equal to or exceeds this saturation pressure, the risk of potential leaks, failures, or hazardous situations due to excessive pressure is minimized.

This requirement reflects a fundamental principle in designing refrigeration systems, where safety and reliability are paramount. Systems that are subjected to pressures lower than the saturation pressure could lead to unintended phase changes, resulting in operational inefficiencies or system failures. Thus, maintaining a design pressure that meets or exceeds this parameter is crucial for the safe and effective operation of refrigeration systems.