This keyword is used to enter data for pressure-regulating valves.
FORMAT:
*VALV <ledningsid, sida, alfa, alfa1, kv1, alfa2, kv2,....., alfa10, kv10> /
Where:
ledningsid : Pipe identification (-)
sida : 0 both supply and return
1 supply
2 return
alfa : Valve opening degree (degrees) (0 = closed valve)
alfa1 : Valve position (degrees)
kv1 : Valve coefficient ((t/h)/bar½) (belongs to alfa1)
.
.
alfa10 : Valve position (degrees)
kv10 : Valve coefficient (belongs to alfa10)
Up to 10 data pairs of valve positions and valve coefficients can be entered. The table must be specified with decreasing valve position values.
If fewer than 10 data pairs are specified, the table must be ended with a “/” (slash).
Example:
*VALV
Pipe ID : “R1”
Supply pipe : 1
Valve characteristic:
Alfa Kv
90 360
75 320
60 280
45 240
30 200
15 160 /