Isolated Pipe - MapleSim Help
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Isolated Pipe

Pipe without heat exchange

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Isolated Pipe component is a two-port thermal-fluid component that models a pipe with friction loss, head loss, and no heat exchange with the ambient.

The Medium parameter specifies the name of a Thermal-Fluid Media record, which must be in the model at the same or higer level.

The Use default medium boolean parameter, when true, sets the name of the Medium parameter to fluidMedium1, which corresponds to the default name of a fluid medium record. To use a different name, uncheck the box and enter the name in the parameter input that appears.

Equations

pdrop&equals;ΔplamVflowVflowlam&plus;{&plus;kVflowVflowlam2Vflowlam<VflowkVflow&plus;Vflowlam2Vflow<Vflowlam0otherwise

h&equals;cpT

Δp&equals;hgρgn&plus;pdrop

Qflow&equals;Qfriction

Qfriction&equals;fLVflowpdrop

Tq&equals;T

Variables

Name

Units

Description

Modelica ID

Qflow

W

Heat exchange with ambient

Q_flow

T

K

Outlet temperature of medium

T

Ta

K

Temperature at flowPort_a

T_a

Tb

K

Temperature at flowPort_b

T_b

Δp

Pa

Pressure drop a->b

dp

pdrop

Pa

 

pressureDrop

Qfriction

W

 

Q_friction

ΔT

K

Temperature increase of coolant in flow direction

dT

Vflow

m3s

Volume flow a->b

V_flow

Connections

Name

Description

Modelica ID

flowPorta

Thermal-Fluid flow port

flowPort_a

flowPortb

Thermal-Fluid flow port

flowPort_b

Parameters

Name

Default

Units

Description

Modelica ID

fix T0

false

 

True (checked) means T0 is enforced, otherwise it is a guess

T0fixed

fL

0

1

Part of friction losses fed to medium

frictionLoss

hg

0

m

Geodetic height (height difference from flowPort_a to flowPort_b)

h_g

m

1

kg

Mass of medium

m

medium

fluidMedium

 

Thermal-Fluid Media

medium

Δplam

0.1

Pa

Laminar pressure drop

dpLaminar

Δpnom

1

Pa

Nominal pressure drop

dpNominal

T0

293.15

K

Initial temperature of medium

T0

Vflowlam

0.1

m3s

Laminar volume flow

V_flowLaminar

Vflownom

1

m3s

Nominal volume flow

V_flowNominal

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Pipes and Valves

Thermal Overview