Keyword *NODE

The keyword *NODE is used to enter node data.    

If a value is unknown, * or 9.9999E+30 is specified.

FORMAT:

*NODE  < Nodeid, ntyp, xkoord, ykoord, elevation, flöde, effekt, pframl,

     preturl, dp, tinl, tframl, tretur, dt, lambda1, lambda2, pris1

     pris2, pris3, pris4> /

 

Where:

Nodeid    :     node identification (-)            

Ntyp      :     node type, an integer in the range 1 to 10.

Xkoord   :     x coordinate (m)                   

Ykoord   :     y coordinate (m)                   

Elevation :     node level (m)                    

Flöde      :     flow volume through the node (kg/s)

Effekt    :     power (kW)               

Pframl    :     pressure, supply pipe (kPa)                

Preturl    :     pressure, return pipe (kPa)                  

Dp         :     differential pressure (kPa)           

Tinl        :     inlet temperature in supply pipe (C)           

Tframl    :     mixed temperature in supply pipe (C)           

Treturl    :     return temperature (C)             

Dt          :     cooling (C)     

lambda1 :     reference value for thermostatic bypass (bypass) (C)        

lambda2 :     diameter for fixed bypass (mm)        

pris1:            :        production price (SEK/kWh). If no production price is to be

                              specified, type just a /

pris2      :     COx, Environmental charges. Price per kWh produced.

pris3      :     NOx, Environmental charges. Price per kWh produced.

pris4      :     SOx, Environmental charges. Price per kWh produced.

 

If a node includes a bypass, min, power = 0 must be set in the node (no cooling/return temp.) for the bypass to be exported to the calculation file.

Example:

*NODE      

      Name        :  “NODE01”

      Node type         :  1

      X coordinate      :  193.23 m

      Y coordinate   :  201.53 m

      Elevation      :  22.5  m

      Flow        :  *    kg/s

      Power       :  12.3  kW

      Pressure supply pipe :  *    kPa

      Pressure return pipe    :  *    kPa

      Differential pressure      :  *    kPa

      Supply temperature   :  *    C

      Supply pipe temperature :  *    C

      Return pipe temperature :  *    C

      Cooling     :  15.9  C

      Reference value temperature   :  *    C

      Bypass diameter      :  10.0  mm

      Production price     :  0.70 SEK/kWh

      COx Price      :  1.00 SEK/kWh

      NOx Price      :  1.00 SEK/kWh

      SOx Price         :  1.00 SEK/kWh