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Re: [EnergyPlus_Support] Warning Calculated Humidity Ratio
Alexander:
Remember that the weather data is interpolated for the subhourly
timesteps. However, it does appear that the reported date is not
consistent with the weather data. In this case, given the extremely
cold temperatures and low humidity levels, you can ignore the
warnings. We will try to determine why the date does not match up.
Mike
On 10 Apr 2003, at 17:14, Alexander Beisteiner wrote:
> Dear E+ User,
>
> A weather file simulation of a purchased air system produces the
> following warning message:
>
> Program Version,EnergyPlus 1.0.3.019, 10.04.2003 15:52
> ************* Testing Individual Branch Integrity
> ************* All Branches passed integrity testing
> ************* No node connection errors were found.
> ** Warning ** Calculated Humidity Ratio Invalid (PSYWTP)
> ** ~~~ ** (mm/dd/hh)= 1/05/01 Dry-Bulb= -24.40 Wet-Bulb=
> -25.40
> Pressure= 97500.00
> ** ~~~ ** Calculated Humidity Ratio= -2.3594E-006 ... Humidity
> Ratio set for a relative humidity ratio of .01
> ** Warning ** Calculated Humidity Ratio Invalid (PSYWTP)
> ** ~~~ ** (mm/dd/hh)= 1/05/01 Dry-Bulb= -25.30 Wet-Bulb=
> -26.30
> Pressure= 97700.00
> ** ~~~ ** Calculated Humidity Ratio= -3.6357E-005 ... Humidity
> Ratio set for a relative humidity ratio of .01
> ** Warning ** Calculated Humidity Ratio Invalid (PSYWTP)
> ** ~~~ ** (mm/dd/hh)= 1/05/01 Dry-Bulb= -26.10 Wet-Bulb=
> -27.10
> Pressure= 97800.00
> ** ~~~ ** Calculated Humidity Ratio= -6.3930E-005 ... Humidity
> Ratio set for a relative humidity ratio of .01
> ** Warning ** Calculated Humidity Ratio Invalid (PSYWTP)
> ** ~~~ ** (mm/dd/hh)= 1/05/01 Dry-Bulb= -27.00 Wet-Bulb=
> -28.00
> Pressure= 97900.00
> ** ~~~ ** Calculated Humidity Ratio= -9.2471E-005 ... Humidity
> Ratio set for a relative humidity ratio of .01
> ** Warning ** Calculated Humidity Ratio Invalid (PSYWTP)
> ** ~~~ ** (mm/dd/hh)= 1/05/01 Dry-Bulb= -27.30 Wet-Bulb=
> -28.30
> Pressure= 98000.00
> ** ~~~ ** Calculated Humidity Ratio= -1.0164E-004 ... Humidity
> Ratio set for a relative humidity ratio of .01
> ** Warning ** Calculated Humidity Ratio Invalid (PSYWTP)
> ** ~~~ ** (mm/dd/hh)= 1/05/01 Dry-Bulb= -27.60 Wet-Bulb=
> -28.60
> Pressure= 98100.00
> ** ~~~ ** Calculated Humidity Ratio= -1.1054E-004 ... Humidity
> Ratio set for a relative humidity ratio of .01
> ************* Psychrometric Error Summary
> ************* Routine - Number of errors
> ************* PSYDPT-0
> ************* PSYRHT-0
> ************* PSYTWD-0
> ************* PSYVTW-0
> ************* PSYWDP-0
> ************* PSYWTH-0
> ************* PSYWTP-363
> ************* PSYWTR-0
> ************* SATUPT-0
> ************* SATUTH-0
> ************* SATUTP-0
> ************* tp12c0-0
> ************* tp12c1-0
> ************* tp12h0-0
> ************* tp12h1-0
> ************* freeze-0
> ************* EnergyPlus Completed Successfully-- 6 Warning; 0
> Severe
> Errors; Elapsed Time=00hr 00min 13sec
>
> Looking at the weather file (of Irkutsk), I could not find temperature
> and pressure values for the time stated: 1/05/01. What does the
> warning tell? Does it distort results? Can the message be neglected?
>
> I am looking forward to your help.
>
> Alexander
>
> _______________________________________
> DI (FH) Alexander Beisteiner
> Wissenschaftlicher Mitarbeiter
>
> Forschungs- und Technologietransfer Pinkafeld GmbH
> Steinamangerstraße 21
> A - 7423 Pinkafeld
> Tel.: +43-3357-45370 DW 1324
> Fax.: +433357-45370 DW 1010
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
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