Final answer:
Every refrigerating system is protected by a pressure relief valve, which ensures safety by releasing excessive pressure. The condenser in an air conditioning system converts gas into liquid, and the evaporator is where heat is removed from within the refrigerator, determining the system's efficiency.
Step-by-step explanation:
Every refrigerating system should be protected by a pressure relief valve. This is a critical safety component designed to prevent the system from reaching pressures that could cause damage or even catastrophic failure. The pressure relief valve automatically releases pressure if it exceeds a certain threshold, ensuring the integrity and safety of the refrigeration system. Other components, such as a properly located stop valve, a low-pressure control, and a refrigerant receiver, play important roles in the operation and efficiency of a refrigerating system but do not provide the same level of protection against overpressure situations as the pressure relief valve does.
In the context of air conditioning systems, the condenser is the component that converts gas into liquid. In the refrigeration cycle, heat absorbed by refrigerant in the evaporator is released when the gaseous refrigerant is compressed and then cooled in the condenser, causing it to condense into a liquid form.
The effectiveness or coefficient of performance (COP) of a refrigerator is a measure of its efficiency, calculated by comparing the amount of heat removed from the evaporator to the energy put into the system to drive the refrigeration cycle. Understanding the various components and their functions in the refrigeration cycle can help diagnose problems and improve system efficiency.