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A Numerical Model of Transient Pipeline Operation

100%
Taler D., Kaczmarski K.
Czasopismo Techniczne
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-
PL
The aim of this study is to develop a numerical model of a steam pipeline. The energy conservation equations for the pipeline wall and steam are solved using the finite volume method (FVM). The transient temperature of the pipeline wall, steam temperature and thermal stresses can be calculated using the model developed in the paper.
2
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A Numerical Model of Transient Pipeline Operation

100%
Taler D., Kaczmarski K.
Czasopismo Techniczne
|
-
PL
The aim of this study is to develop a numerical model of a steam pipeline. The energy conservation equations for the pipeline wall and steam are solved using the finite volume method (FVM). The transient temperature of the pipeline wall, steam temperature and thermal stresses can be calculated using the model developed in the paper.
3
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Modeling of pipeline heating

100%
Taler D., Tokarczyk J.
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PL
Heating of the pipeline with thermally insulated outer surface was modelled using the explicit finite difference method. The time variation of the fluid temperature at the pipeline inlet has the ramp form. An exact analytical solution was found using the method of superposition. The differences between the analytically and numerically predicted fluid and tube wall temperatures are small. The same method will be used in future for modeling, a heat storage unit, that is used in a combined electric-water heating system.
4
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Mathematical modelling of tube heat exchangers with complex flow arrangement

81%
Taler D., Trojan M., Taler J.
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vol. 32
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issue 1
7-19
EN
General principles of mathematical modelling of transient heat transfer in cross-flow tube heat exchangers with complex flow arrangements which allow a simulation of multipass heat exchangers with many tube rows are presented. First, a system of differential equations for the transient temperature of both fluids and the tube wall with appropriate boundary and initial conditions is formulated. Two methods for modelling heat exchangers are developed using the finite difference method and finite volume method. A numerical model of multipass steam superheater with twelve passes is presented. The calculation results are compared with the experimental data.
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