[Equest-users] Unusual QC Errors

[Matutinovic, Luka]

Hello All,

 

My simulation won't run because of unusual errors that I've never seen
before, but that I picked up when looking at the details of the QC
report:

 

Here is a summary of the errors.  If anyone has seen this before and may
have ideas about what's causing it, I'd really appreciate the help.  

 

I haven't attached the .pd2 and .inp file due to file size, but I can
forward them to anyone who's interested in taking a peek.

 

Many thanks,

 

Luka

 

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4) Hours of Operation                                        

            Hours of Operation                                

                        Fan vs. Occupancy Hours                      

                                                The average occupancy /
fan operation ratio for the building is -72480000.00 and appears high
(error above 1.75, see PS-E & SS-C reports).

                        Fan vs. Lighting Operating Hours


                                                The average hours of
light operation / fan operation ratio for the building is 0 and appears
low (error below 0.25, see PS-E & SS-C reports).

                        Fan vs. Equipment Operating Hours


                                                The average hours of
plug load operation / fan operation ratio for the building is 0 and
appears low (error below 0.25, see PS-E & SS-C reports).

5) HVAC Equipment Descriptions


            Air-Side Checks                                    

                        CFM/ton of cooling                    

                                                The supply air flow for
system 'E1 Sys1 (PIU) (B)' is 120000.0 cfm/ton and appears high (see
SV-A report).

                        

            User Input Equipment Performance Curves


                        Curve coefficients sum to 1                   

                                                The sum of the
coefficients for the 'ForCurve w Inlet Vanes FPLR' curve is 0.99 and
does not equal 1 (check Curve Inputs for errors).

6) Zone Control and Equipment Sizing


            Primary Equipment Unable to Meet Loads


                        Chillers             

                                                Chillers on Loop:
'Chilled Water Loop' have a total Capacity to Load Ratio of -1.00 and
may be undersized (Error: Ratio <   0.90) 

Total Chiller Capacity on Loop = -2 (Btu/hr)

Peak CHW Loop Load = -1 (Btu/hr)

Chiller: 'Chiller1a (ElCentHerm)' capacity = -1 (Btu/hr)

                                                Chiller: 'Chiller1b
(ElCentHerm)' capacity = -1 (Btu/hr)

                        Boilers              

                                                Boilers on Loop: 'Hot
Water Loop' have a total Capacity to Load Ratio of -0.00 and may be
undersized (Error: Ratio < 0.90) 

Total Boiler Capacity on Loop = -2 (Btu/hr)

Peak HW Loop Load = -1 (Btu/hr)

Boiler: 'Boiler1a (HWNatDrft)' capacity = -1 (Btu/hr)

                                                Boiler: 'Boiler1b
(HWNatDrft)' capacity = -1 (Btu/hr)

            Circulation Loop Overload                                  

                        Circulation Loop Overload                      

7) HVAC Load & Performance Results


            Monthly Pattern of HVAC Loads


                        Heating Coil Loads                     

                                                System 'E1 Sys1 (PIU)
(B)' has a high Summer/Winter heating coil load ratio of 1.0 (error over
0.2, see SS-D report).

                                                

            Primary HVAC Equipment Performance                          

                        Average Chiller COP                  

                                                'Chiller1a (ElCentHerm)'
Average Yearly COP (Total Annual Output/Total Annual Input) = -1.0 and
may be low (Error: Ratio <= 1).

                                                'Chiller1b (ElCentHerm)'
Average Yearly COP (Total Annual Output/Total Annual Input) = -1.0 and
may be low (Error: Ratio <= 1).

                        Average Cooling Tower COP                  

                                                'Open Tower' Average
Yearly COP (Total Annual Output/Total Annual Input) = -1.0 may be low
(Error: Ratio <= 1).

                        

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