Dear Trnsys users.
When I try to simulate a HVAC system, I got the following error message copied
from the .lst file related to an equation proforma:
* EQUATIONS "ChWSH_P"
EQUATIONS 12
M_ChWS_PO_max = 85323
M_ChWS_PSA_max = 104280
S_SAV_PO1 = gt([71,1],0.1)*gt([86,1],0.01)*Max(Min([86,1],1.0),0.3)
S_SAV_PSA1 = gt([71,5],0.01)*gt([110,1],0.01)*Max(Min([110,1],1.0),0.3)
tMP = M_ChWS_PO_max*S_SAV_PO1+M_ChWS_PSA_max*S_SAV_PSA1
xPO = gt(tMP,0.01)*M_ChWS_PO_max*S_SAV_PO1/Max(tMP,0.01)
xPSA = 1-xPO
M_ChWS_PO =
gt(N_ahu_PO,0.1)*Min([43,2]*N_chwsp_P*S_SAV_PO1,M_ChWS_PO_max)/Max(N_ahu_PO,0.01)
M_ChWS_PSA =
gt(N_ahu_PSA1,0.1)*Min([43,2]*N_chwsp_P*S_SAV_PSA1,M_ChWS_PSA_max)/Max(N_ahu_PSA1,0.01)
*** Fatal Error at time : 0.000000
Generated by Unit : Not applicable or not available
Generated by Type : Not applicable or not available
TRNSYS Message 20 : The referenced variable used in this equation has
not been defined in the TRNSYS input file. The equation begins with the string
in "reported information"
Reported information : M_CHWS_PSA = j(N_AH
*** Fatal Error at time : 0.000000
Generated by Unit : Not applicable or not available
Generated by Type : Not applicable or not available
TRNSYS Message 20 : The referenced variable used in this equation has
not been defined in the TRNSYS input file. The equation begins with the string
in "reported information"
Reported information : M_CHWS_PSA = j(N_AH
Does anyone konw what's going wrong? Another strange matter is that when I
input the formula for M_ChWS_PO, I use N_ahu_PO1 (see attached screenshot).
However, in the input and listing files, it becomes N_ahu_PO. How can I
rectify
the problem? Thank you!
Best Regards
LEE, Chun Kwong
City University of Hong Kong
Attachment:
Equation proforma.gif
Description: GIF image
