Flow monitoring using flow control device

摘要

A method for determining the flow rate of a fluid, having a liquid fraction and a gas fraction, comprising the steps of: measuring the pressure and temperature of said fluid at a flow control device through which said cyrogenic fluid passes; inputting said measured pressure and C_v into an algorithm; and performing a single or multi-step iteration to determine a fluid mass flow rate of the fluid through said flow control device using said algorithm that relates the mass flow rate of said fluid to said C_v, and mass densities of said liquid fraction and said gas fraction of said fluid which are a function of said measured pressure, and temperature. A system is also provided.