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Re: [EnergyPlus_Support] Psychrometric Error



If you use performance curves from an example file (such as 
FurnaceWithDXSystem.idf) does the simulation run without such errors?

If so, the problem is probably in the curve fits.  Have you taken the curve 
fits and plotted them against a range of temperature conditions to see if the 
shapes are reasonable?

Mike


On 21 Nov 2006 at 2:03, eric_zhou1223 wrote:

> Hi£¬
> 
> I am trying to replace the performance curves of
> Coil:DX:CoolingbypassFactorEmpirical 
> with some fitted curves from a manufacturer catlogue. The simulation run well
> but poped 
> out some errors. Does it mean that E+ thought the coil is giving impossible
> capacity? What 
> shall I do to fix it?
> 
> Thank you in advance.
> 
>    ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Enthalpy=-71700.29 Pressure= 101900.0
>    **   ~~~   **  Initial Resultant Temperature= -59.98
>    ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -89563.99
>    **   ~~~   ** Calculated Humidity Ratio= -1.2255E-02 ... Humidity Ratio set
> to .00001
>    ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Enthalpy=-60525.36 Pressure= 101900.0
>    **   ~~~   **  Initial Resultant Temperature= -59.98
>    ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -78389.05
>    **   ~~~   ** Calculated Humidity Ratio= -7.5789E-03 ... Humidity Ratio set
> to .00001
>    ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Enthalpy=-53785.87 Pressure= 101900.0
>    **   ~~~   **  Initial Resultant Temperature= -59.98
>    ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -71649.57
>    **   ~~~   ** Calculated Humidity Ratio= -4.7583E-03 ... Humidity Ratio set
> to .00001
>    ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Enthalpy=-53318.36 Pressure= 101900.0
>    **   ~~~   **  Initial Resultant Temperature= -59.98
>    ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -71182.06
>    **   ~~~   ** Calculated Humidity Ratio= -4.5626E-03 ... Humidity Ratio set
> to .00001
>    ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Enthalpy=-53570.60 Pressure= 101900.0
>    **   ~~~   **  Initial Resultant Temperature= -59.98
>    ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -71434.30
>    **   ~~~   ** Calculated Humidity Ratio= -4.6682E-03 ... Humidity Ratio set
> to .00001
>    ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Enthalpy=-53564.07 Pressure= 101900.0
>    **   ~~~   **  Initial Resultant Temperature= -59.98
>    ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/01 07:30 - 08:00
>    **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -71427.77
>    **   ~~~   ** Calculated Humidity Ratio= -4.6655E-03 ... Humidity Ratio set
> to .00001
>    ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/11 07:30 - 08:00
>    **   ~~~   **  Input Temperature=-213.43
>    ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/11 07:30 - 08:00
>    **   ~~~   **  Input Temperature=-213.90
>    ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/11 07:30 - 08:00
>    **   ~~~   **  Input Temperature=-136.06
>    ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/11 07:30 - 08:00
>    **   ~~~   **  Input Temperature=-136.29
>    ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/11 07:30 - 08:00
>    **   ~~~   **  Input Temperature=-136.06
>    ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
>    **   ~~~   **  Occurrence info=NEW_YORK_CITY NY USA TMY2-94728 
> WMO#=744860, 08/11 07:30 - 08:00
>    **   ~~~   **  Input Temperature=-136.29
>    ************* Psychrometric Error Summary
>    *************  Routine - Number of errors
>    *************    PsyTdpFnTdbTwbPb-0
>    *************    PsyRhFnTdbWPb-0
>    *************    PsyTwbFnTdbWPb-0
>    *************    PsyVFnTdbWPb-0
>    *************    PsyWFnTdpPb-0
>    *************    PsyWFnTdbH-124228
>    *************    PsyWFnTdbTwbPb-0
>    *************    PsyWFnTdbRhPb-0
>    *************    PsyPsatFnTemp-14996
>    *************    PsyTsatFnHPb-154530
>    *************    PsyTsatFnPb-0
>    *************    tp12c0-0
>    *************    tp12c1-0
>    *************    tp12h0-0
>    *************    tp12h1-0
>    *************    freeze-0
>    ************* EnergyPlus Completed Successfully-
> 
> 
> 
> 
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> 
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> 
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>  
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> 
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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