What should be prevented from being valved off in a solar energy system?

In a solar energy system, it is crucial to prevent the valving off of a section of the system, as this could lead to severe operational issues. When a section of the system is isolated, it can cause pressure build-up, disrupt the heat transfer process, and potentially lead to system failure or damage.

Maintaining fluid flow is critical for the efficient transfer of heat. If a segment of the piping or a specific component is valved off, it could result in stagnant fluid that may overheat or become corrosive, leading to leaks or ruptures. Additionally, systems rely on a balanced flow and pressure to operate effectively; isolating a section disrupts this balance and can compromise system integrity.

In contrast to this, energy sources and heat transfer liquids are essential components of the system but may not necessarily need to be valved off. Relief devices, on the other hand, are designed to operate under certain conditions to prevent excessive pressure and should always be functional to ensure safety. Hence, it's particularly important to keep all sections of a solar energy system interconnected and fully operational to maximize efficiency and safety.