[esp-r] Re: Enthalpy sensor

wakana-m at ec.hokudai.ac.jp wakana-m at ec.hokudai.ac.jp
Thu Jan 9 08:52:21 GMT 2014


Dear all,

Hello.
I found the sensor of enthalpy at node in network flow.
Now I made a simple cubic model as a trial.
The model has three nodes, middle of room(internal), northern wall(bound 
wind P)and southern wall(bound wind P). 

I want to control of opening and closing of windows depend on the 
enthalpy in outside.
In my model, ON/OFF control was used, and northern wall and southern 
wall were specified as control node.
However, after I clicked "invoke simulation", "Continue!" was popped 
onto the screen and the model couldn't be simulated.
In the simulator, error sentence was written;
CFFVAR: function 1 type 3
CFFVAR: invalid SSV for mass flow control type

Can I use this sensor for control of opening/closing windows?
If I can, how should I modify the model?
Any advice would be appreciated.

Version: 11.11
<<afn file>>
    3    1    2    1.000    (nodes, components, connections, wind 
reduction)
 Node         Fld. Type   Height    Temperature    Data_1       Data_2
 room            1    0   1.5000       20.000       0.0000       27.000  
  
 North           1    3   1.5000       0.0000       1.0000       0.0000  
  
 South           1    3   1.5000       0.0000       1.0000       180.00  
  
 Component    Type C+ L+ Description
 opening        30  2  0 Constant vol. flow rate component   m = rho.a   
            
   1.0000000      1.38888890E-02
 +Node         dHght   -Node         dHght   via Component
 room          0.000   North         0.000   opening                     
            
 room          0.000   South         0.000   opening           

<<ctl file>>
no overall control description supplied
* Mass Flow
no flow control description supplied
   1  # No. of controls
* Control mass    1
# senses node (1) room
   -4    1    0    0  # sensor data
# actuates flow component:   1 opening
   -4    1    2  # actuator data
    1  # all daytypes
    1  365  # valid Mon-01-Jan - Mon-31-Dec
     1  # No. of periods in day: weekdays    
    3    0   0.000  # ctl type (enthalpy > flow), law (on/off setpoint 
50.00 inverse action ON fraction 1.000.), starting @
      3.  # No. of data items
  50.00000 -1.00000 1.00000
room          North         opening       North       
room          South         opening       South  

Best regards,
Wakana Matsumoto





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