Techniques and Topics in Flow Measurement

ISBN-13: 9780849324758 / Angielski / Twarda / 1995 / 176 str.

Frank E. Jones; Frank E. Jones

Opis

Techniques and Topics in Flow Measurement covers the applications and techniques of flow measurement. This definitive book provides guidelines for choosing appropriate techniques and assuring valid measurements as well as describes methods for treatment of calibration data in fluid flow under various conditions. The book also covers three systems of units: the SI system, the English Absolute Dimensional system, and the English Engineering system. Commonly used - and often misused - variables such as force, weight, and pressure are defined, and the relationships between the systems for these common variables are summarized.
One of the many unique features of Techniques and Topics in Flow Measurement is the number of ready-to-use tables included throughout the text. Tables are provided for such commonly encountered variables as the saturation vapor pressure of water; the composition of dry air; the compressibility factor for air; air-free and air-saturated water density; viscosity of dry air, nitrogen, and other gases; and specific heat/specific volume ratios for dry air, water vapor, and moist air. Another unique feature of this book is the number of highly relevant examples. The author includes examples/exercises that demonstrate applications for density calculations; water vapor mixing ratio determination; gas viscosity interpolation; NIST guideline applications; buoyancy corrections; and more.

Spis treści

Force, Weight, and Pressure UnitsForceWeighingPressureApplication to ManometryDensity of GasesDevelopment of the Air Density EquationParameters of the Air Density EquationUncertainties in Air DensityUncertainties in the Environmental QuantitiesUse of Constant Values of f, Z, and Ma in the Air Density EquationCIPM-81 Air Density EquationDensities of Some Other GasesDensity of WaterFormulations of KellNew FormulationsTablesWater Vapor Mixing Ratio as a Flow ParameterDensity of Moist Air. Freestream Air VelocityReal-Gas Ratio of Specific Heats, g, for Moist AirCalculation of Saturation Mixing RatioUncertainty in the Calculation of rsViscosity of GasesExperimental DataDevelopment of EquationsRanges of Application of the EquationsTablesGamma, Ratio of Specific Heats for AirReal-Gas Specific Heats of AirReal-Gas Specific Heats of Water VaporMeasurement UncertaintyNIST GuidelinesBuoyancy Corrections in WeighingBuoyant Force and Buoyancy CorrectionApplication of the Simple Buoyancy Correction Factor to Weighing on a Single-Pan BalanceThe Electronic Analytical BalanceExamples of Effects of Failure to Make Buoyancy CorrectionsReal-Gas Critical Flow Factor, C*Interpolation Formula for C*Subsonic Flow and Discharge CoefficientsSubsonic Flow of Gas through Venturis, Nozzles, and OrificesNozzle Discharge CoefficientDerivation of Discharge Coefficient, CD, for Orifice PlatesAutomatic PipetsCalibration of Automatic PipetsResults and ConclusionsReference Method for Testing HydrometersHydrometer Calibration MethodApplication of the Method to Hydrometer CalibrationTreatment of Laminar Flowmeter Calibration DataDevelopment of the EquationEffect of Kinematic Viscosity on Performance of Turbine FlowmetersApplication of Dimensional AnalysisCurvature of a Plot of f/Q against fExperimental Determinations of a(v) and b(v)Discussion and ConclusionsAnalysis of Calibration Data for Vortex Shedding FlowmeterTreatment of Calibration Data for Venturi MetersAscertaining Linear Range of AnemometersJones's Treatment of Calibration Data for Turbine FlowmetersTreatment of Anemometer Calibration DataApplication of the AnalysisDiverter CorrectionsDiverter Valve CorrectionConclusionsCalibration of Platform ScaleExperimentalVolumetric Test Measures: Types of Test MeasuresCalibration of Test MeasuresEquivalence of Gravimetric and Volumetric Test Measure. Example of Uncertainty for Gravimetric CalibrationExperimental Determination of Density of LiquidsLiquid Density Determination by Hydrostatic WeighingDetermination of the Density of Liquids Using a Mechanical Oscillator TechniqueTank VolumeTank CalibrationCalibration EquationApplication to Flow MeasurementIndex

O autorze

Frank E. Jones is an independent consultant in the Washington D.C. area. For many years he was a physicist with the National Institute of Standards and Technology. He is the author of over 75 technical publications, three books and holds several measurement-related patents.