Re: [EnergyPlus_Support] Purchase Air problem 2

[wah <wong@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Dear Mike,

Thank you for the advice.

The Heating and Cooling Setpoint and Control Type do show up as expected.
However, the LVG MAT could not meet Heating Setpoint but meet Cooling Setpoint,
while ADJ MAT meets both setpoints most of the time.

I used the PurchAir Problem idf with JPN_Osaka_IWEC.epw weather file.
As you mentioned the purchased air is meeting the request, I wonder if we are getting the same output files..
I uploaded my output file: PurchaseAirProbSpreadsheet
Random check shows LVG Purchase Air meets 36% of Heating and 100% of Cooling requirement;
                   ADJ Purchase Air meets 96% if Heating and 66% of Cooling requirement
I suppose if everything goes well the Heating and Cooling requirement should be met at least 80% of the time?

Please advice and thank you!

PuiWah


こんにちは。

In message "Re: [EnergyPlus_Support] Purchase Air problem",
Michael J. Witte wrote...
 >Add the following report variables to see how the system controls are operating:
 >
 >  Zone/Sys Thermostat Heating Setpoint
 >  Zone/Sys Thermostat Cooling Setpoint
 >  Zone/Sys Thermostat Control Type
 >
 >Reviewing the results shows that the purchased air is meeting these requests.  
 >In the control type schedules there are several months where the control type 
 >is being set to zero which means no heating or cooling should operate.  
 >
 >Mike
 >
 >
 >On 25 Jul 2005, at 15:31, 黄佩華 wrote:
 >
 >> Hello.
 >> I am using Purchase Air but it does not work consistently.
 >> The Zone MAT meet the setpoint temperature only during some days in the 
 >> heating and cooling period.
 >> Uploaded the file: PurchAir Problem
 >> Could anybody please advice whether it is problem with my setting?
 >> Thank you!
 >> 
 >> PuiWah
 >> 
 >> 
 >> 
 >> 
 >> The primary EnergyPlus web site is found at:
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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
 >
 >
 >
 >
 >The primary EnergyPlus web site is found at:
 >http://www.energyplus.gov
 >
 >The group web site is:
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 >
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Site.
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