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CALCULATOR MODULE : Line Pipe Thermal Conductivity And Heat Transfer ±
Calculate pipe heat transfer coefficient from pipe schedule diameter and wall thickness. Use the Result Table option to display the results for the selected pipe diameter. For multi layer pipes (line pipe with outside layers and or inside layers), the results for each layer are displayed in the output view at the bottom of the page. Change the number of layers on the setup page. Change Module : Related Modules : |
CALCULATOR MODULE : Hot Pipeline Temperature Decay Curve ±
Calculate high temperature pipeline temperature decay curve from thermal properties or temperature data. The temperature is assumed to decay exponentially. The temperature decay can be defined by either a decay length, or decay time. The decay length is only valid provided that the fluid mass flow rate and heat capacity are unchanged. The decay time is valid for any flowrate provided that the fluid heat capacity is unchanged. The overall heat transfer coefficient is calculated relative to the inside diameter of the pipe. Change Module : |
CALCULATOR MODULE : Hot Pipeline End Expansion ±
Calculate high temperature pipeline end expansion and anchor points. Pipeline expansion is caused by the change in pressure and temperature from the installation conditions. The external temperature and pressure are assummed to be constant. The anchor points are the locations at both ends where the friction force is equal to the restrained axial load. Short pipelines have a virtual anchor point at the midway position. Change Module : |
CALCULATOR MODULE : Hot Pipeline Walking ±
Calculate high temperature pipeline walking due to temperature and pressure cycling using the Pipeng simplified method. The pipe walking length is calculated from the axial movement of the pipe at the down stream anchor point during startup and shutdown cycling using a simple linear friction model. Refer to the pipe walking reference file (pdf) for more details. Change Module : |
CALCULATOR MODULE : Hot Pipeline Heat Transfer Coefficient ±
Calculate high temperature pipeline heat transfer coefficient for multi layer pipelines. Enter the wall thickness and thermal conductivity for all layers. Change the number of layers and the units on the setup page. The thermal resistance does not include the external film resistance, or the soil resistance. Change Module : |
CALCULATOR MODULE : Soil Pipe Thermal Resistance ±
Calculate soil and pipe thermal resistance and temperature decay constants for buried pipelines. The decay length is only valid provided that the fluid mass flow rate and heat capacity are unchanged. The decay time is valid for any flowrate provided that the fluid heat capacity is unchanged. The overall heat transfer coefficient is calculated relative to the inside diameter of the pipe. Change Module : Related Modules : |
DATA MODULE : Material Heat Transfer And Thermal Capacity ( Open In Popup Workbook ) ±
Material thermal heat transfer coefficients, and heat capacity. Related Modules : |
DATA MODULE : Soil Properties : Density Uplift Coefficient Shear Strength And Friction Factor ( Open In Popup Workbook ) ±
Soil properties, soil density, uplift coefficient, shear strength and friction factors. Related Modules : |