The calculation of pressure drop, flow rate and pipe diameter during compressible flow is by the formulas for isothermal gas flow. It assumes that the temperature of the natural gas flow in long pipelines is constant. The temperature of the natural gas in long pipelines is constant because ...
Correction of natural gas flow calculation concerning the influence of water vaporA system for measuring the concentration of water vapor in a gas (305) comprises a pressure sensor (202) configured to sense a static pressure of a gas (305), a difference configured to sense a differential ...
Direct Calculation of Unsteady-State Weymouth Equations for Gas Volumetric Flow Rate with Different Friction Factors in Horizontal and Inclined Pipes Direct calculations of unsteady-state Weymouth equations for gas volumetric flow rate occur more frequently in the design and operation analysis of natural....
REAL-GAS EFFECTS IN CRITICAL-FLOW-THROUGH NOZZLES AND TABULATED THERMODYNAMIC PROPERTIES The mass-flow rate for real gases passing through critical-flow nozzles has been calculated. The result of this calculation is presented in the form of a c... RC Johnson 被引量: 0发表: 1965年 Modeling ...
Formulas for calculating mass flow in long distance gas pipelines in flat areas: Analysis: any starting point than pipeline high or low 200m in natural gas pipeline, we must consider the impact of elevation and topography in the hydraulic calculation, the elevation has a uniform slope to...
The calculation of several fundamental, physical, and thermodynamic parameters such as density, enthalpy, entropy, JT coefficient, calorific value, etc., are considered by using empirical formulas or calculation methods based on thermodynamic laws. (4) The phase relationships of natural gas are ...
(05.02) ANSI/ASTM F2138-20XX 自然气设备溢流阀标准 Specification for Excess Flow Valves for Natural Gas Service ANSI/CSA NGV3.1-1995 自然气动力车辆燃料系统元件 Fuel System ponents for Natural Gas Powered Vehicles Calculation of Gross 成分分析中加热总值、比 Heating Value, Specific ANSI/GPA 2172-...
Keywords:pipelinetransmission;pipehydraulicflow;heattransfer;naturalgas 1.Introduction Theeffectofsimplificationsintheheattransfermodelofagaspipelineandtheambientsoilisinvestigated.Of interestistheaccuracyofhydraulicflowcalculationwhenrapidtransientflowconditionsoccuratthepipelineinlet. Theaimofthestudyistodeterminetherelativ...
According to mass conservation, the natural gas pipeline flow rate before the leak point can be obtained by Q−’ = K + Q+’, and Q−’ is inserted into step 1 to calculate the new K’ and P2’. This process is iterated until the calculation results of the natural gas ...
The results show that the effect of treating the gas in a nonisothermal manner is extremely necessary for pipeline flow calculation accuracies, especially for rapid transient process. It also indicates that the convective inertia term plays an important role in the gas flow analysis and cannot be...