Where is the ruptured disk typically located in a low pressure centrifugal refrigeration machine?

In a low pressure centrifugal refrigeration machine, the ruptured disk is typically located on the compressor suction side. This placement is crucial for safety and operational efficiency. The primary function of the ruptured disk is to act as a safety feature that prevents overpressure conditions from occurring in the system.

When the pressure in the compressor suction exceeds a certain limit—either due to blockage, malfunction, or other issues—the ruptured disk will break, allowing refrigerant to escape and thereby relieving the pressure. This helps to protect the compressor from potentially catastrophic failure caused by overpressure.

The other locations mentioned, such as the compressor discharge, expansion valve, and condenser outlet, do not serve the same role in protecting against low pressure conditions. Thus, the suction side is the logical and correct position for the ruptured disk within the context of safety mechanisms in refrigeration machines.