What is an advantage of a pressure relief outlet over fusible plugs?

A pressure relief outlet is designed to release pressure while minimizing refrigerant loss, which is an essential function in various refrigeration systems. The primary purpose of a pressure relief outlet is to safely relieve excess pressure that could potentially lead to catastrophic failures, such as ruptures or explosions. Unlike fusible plugs, which melt and release refrigerant when a certain temperature is reached, pressure relief outlets can open at specific pressure thresholds without releasing excessive amounts of refrigerant into the environment. This feature not only safeguards the integrity of the refrigeration system but also reduces the environmental and economic impacts associated with refrigerant loss.

In contrast, while the other options may highlight different aspects of maintenance, installation, or energy requirements, they do not specifically address the operational advantages that a pressure relief outlet provides in terms of efficiency and safety.