The keyword *PIPE is used to enter pipe data.
If any data for the keyword is unknown, * or 9.9999E+30 must be used.
FORMAT:
*PIPE < ledningsid, Node1, Node2, ledningstyp,
………diam1, u1, ε1, z1, längd1
diam2, u2, ε2, z 2, längd2,
………flöde, dpNode1f, dpNode2f,
dpNode1r, dpNode2r, pNode1f, pNode2f,
……… pNode1r, pNode2r, dtNode1f,
dtNode2f, dtNode1r, dtNode2r, tNode1f,
………tNode2f, tNode1r, tNode2r, /
xn, yn,> /
Where:
ledningsid : pipe name (-)
Node1 : node name 1 (-)
Node2 : node name 2 (-)
ledningstyp : from pipe type directory
diam1 : internal diameter (mm) supply
u1 : total heat transmission coefficient (W/mK) supply
ε 1 : pipe roughness (mm) supply
z 1 : individual pressure loss in the pipe (-) supply
längd1 : length of supply pipe (m)
diam2 : internal diameter (mm) return
u12 : total heat transmission coefficient (W/mK) return
ε 2 : pipe roughness (mm) return
z 2 : individual pressure loss in the pipe (-) return
längd2 : length of return pipe (m)
flöde : mass flow (kg/s)
dpnode1f : change of the pressure in node 1 supply (kPa)
dpnode2f : change of the pressure in node 2 supply (kPa)
dpnode1r : change of the pressure in node 1 return (kPa)
dpnode2r : change of the pressure in node 2 return (kPa)
pnode1f : pressure in node 1 supply (kPa)
pnode2f : pressure in node 2 supply (kPa)
pnode1r : pressure in node 1 return (kPa)
pnode2r : pressure in node 2 return (kPa)
dtnode1f : DT in node 1 supply (C)
dtnode2f : DT in node 2 supply (C)
dtnode1r : DT in node 1 return (C)
dtnode2r : DT in node 2 return (C)
tnode1f : temperature in node 1 supply (C)
tnode2f : temperature in node 2 supply (C)
tnode1r : temperature in node 1 return (C)
tnode2r : temperature in node 2 return (C)
xn : x coordinate for breakpoint (m)
yn : y coordinate for breakpoint (m)
A / slash must be typed after tNode2r. After that, up to 100 pairs of coordinates can be specified for the pipe's breakpoints. Breakpoint coordinates are terminated with a / slash.
Example:
*PIPE Pipe ID: “L1” Node1: “K1” Node2: “K2”
Diameter U value. Roughness Single-use resistance
Framl 88.9 0.325 0.05 1.5
Returl 88.9 0.300 0.05 1.0
Flow *
Node1 supply Node2 supply Node1 return Node2 return
Pressure changes 0 0 0 0
Pressure * * * *
Pressure changes 0 0 0 0
Temperatures * * * * /
Breakpoint x: 273.00 y: 598.0
Breakpoint x: 299.0 y: 700.8 /