There is a problem with my HVAC modeling, so I ask for your help.
Trnflow's Test Data supplies and ventilates the building, and the air volume is given to Simulation Studio's Calculation.
The simulation does not stop if I give one air volume value(constant air volume), but if I give the air volume with the variable air volume, the simulation stops and the following error occurs:
***** ***** WARNING ***** UNIT 32 TYPE 56, TIME = 1.000E+00
COMIS MESSAGE ***** ERROR *****
Flow matrix is singular ! This might be caused by a zone that has no
ventilation at all in this condition.
Age of air and air change efficiency output is invalid !
This is Calculation for air flow rate. I want to give 30% of the maximum air volume when it is below 23 degrees, give a linear air volume between 23 degrees and 25, and give a maximum air volume when it exceeds 25 degrees.
The signal below is that gives air volume in Trnflow's Test Data.
Any help would be appreciated.
Thanks and have a nice day!
-------------------------------------------------------------------------------------------
Lee Hye-In
Graduate school of Yeungnam University
Lee Hye-In
Graduate school of Yeungnam University
Dept. of Architectural Engineering
Building Energy Systems Laboratory
280 Daehak-ro, Gyeongsan-si, Gyeongbuk-do 38541, Korea
(Tel) +82-53-810-3543; +82-10-8330-7087
gpdls0101@gmail.com
Building Energy Systems Laboratory
280 Daehak-ro, Gyeongsan-si, Gyeongbuk-do 38541, Korea
(Tel) +82-53-810-3543; +82-10-8330-7087
gpdls0101@gmail.com