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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 Soil Weight ±
Calculate soil specific weight, soil solid density, soil loose density, soil volume fraction and soil void ratio for dry and submerged soil. The void ratio is the ratio of void volume over the soil volume. The soil volume fraction is the ratio of the soil volume over the total volume (soil volume plus void volume). Change Module : |
CALCULATOR MODULE : Hot Pipeline Soil Friction ±
Calculate high temperature pipeline soil friction force, friction factos, friction angle and earth pressure coefficient. Change Module : |
CALCULATOR MODULE : Hot Pipeline Uplift Resistance ±
Calculate high temperature pipeline soil uplift resistance from pipe weight and soil height. Soil resistance can be calculated for cohesive and non cohesive soils. Change Module : |
CALCULATOR MODULE : Soil Pipe Cover Weight And Uplift Resistance ±
Calculate soil and pipe cover weight and uplift resistance for buried pipelines. The cover weight can be calculated for either cohesive and non cohesive soils. The uplift resistance includes the weight of the pipe (either dry or submnerged and full or empty). For dry pipelines use the specific weight of dry soil. For wet pipelines use the specific weight of wet soil. Change Module : Related Modules : |
CALCULATOR MODULE : Soil Weight And Density ±
Calculate soil weight and density from void ratio or volume fraction, for either dry soil, or submerged soil. The soil volume fraction is the volume of soil over the total volume (soil volume plus void volume). The void ratio is the void volume over the soil volume. Change Module : Related Modules : |
CALCULATOR MODULE : Soil Pipe Friction ±
Calculate soil and pipe friction load and equivalent friction factor for buried pipelines in either cohesive or non cohesive soil. The equivalent friction factor is equal to the axial friction load divided by the pipe weight. Change Module : Related Modules : |
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 : 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 : |