What is true about the design pressure of a receiver in a limited charge system?

In a limited charge refrigeration system, the design pressure of the receiver must be aligned with the system's operational characteristics and safety standards. The correct statement is that the design pressure of the receiver need not exceed the setting on the pressure relief. This is important because the pressure relief valve is designed to protect the system from overpressure situations. If the receiver's design pressure were to exceed the relief setting, it could create a situation where the receiver is operating at dangerous levels, potentially leading to safety issues.

By ensuring that the design pressure does not have to exceed the pressure relief setting, it provides an adequate safety margin while still allowing for efficient operation. The receiver can safely handle the anticipated refrigerant pressures without being over-engineered, which can be economically advantageous. This consideration reflects the balance between safety and efficiency that is crucial in refrigeration system design.