In relation to pressure relief devices, what does "C" equal in the formula C=Fd1?

In the context of pressure relief devices, the formula C = Fd1 is used to calculate the capacity (C) of the relief device. In this formula, "C" represents the flow rate, which is typically measured in cubic feet per minute (CFM). This measurement indicates how much air or gas is passing through the relief device over a given period and is crucial for ensuring that the system can handle excess pressure properly.

Understanding this formula is important for selecting the appropriate relief device based on the expected flow rates, ensuring safety and compliance with industry standards. The choice of cubic feet per minute as the correct interpretation of "C" aligns with the practices used in the field, where air flow is often expressed in terms of volume per time, which allows for effective analysis and design of the systems involved.