OrificeMeter: An ActiveX component to determine fluid flow in a pipeline

摘要

In geothermal systems, fluid flow is measured with an orifice meter. The theoretical formula for an orifice meter is derived on the basis of continuity and Bernoulli equations. The Bernoulli equation is valid for incompressible fluids; therefore, the application of the theoretical formula for orifice meters provides reasonable results for the determination of liquid flow.rnThe International Organization for Standardization (ISO) included some empirical parameters in the theoretical formula. The modification was based on an extensive study of the comparison of experimentally measured and theoretically calculated values of fluid flow (ISO, 2003).