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Re: [EnergyPlus_Support] Issue about Variable Speed Pump when minimum flow rate is set



Qingfan,

If this hasn't been dealt with already, email me your 2-0-0 input file with
the min as 0.35.

Fred Buhl

qingfanzeng wrote:
> Dear Supporter,
>
> I met one issue about Variable Speed Pump when I tried to set its 
> minimum flow rate. I used the sample idf file - 5ZoneAirCooled.idf 
> and two EnergyPlus versions: 1-4-0 and 2-0-0. When the Min Flow Rate 
> of CW Circ Pump (a Variable Speed Pump) is 0, the flow rate of this 
> pump changes every hour, according to the building cooling load. But 
> when I set the Min Flow Rate to 0.35, the flow rate of this pump 
> keeps as constant as its maximum value in 99% cooling time. I post 
> part of this result (EnergyPlus Version 1-4-0) at June 26th.
>               
>           Flow rate when Min as 0     Flow rate when Min as 0.35
> 7:00       0.105827619                     1.350900891
> 8:00       0.135507546                     1.350900891
> 9:00       0.178759363                     1.350900891
> 10:00      0.302383865                     1.350900891
> 11:00      0.420776425                     1.350900891
> 12:00      0.418370539                     1.350900891
> 13:00      0.343836121                     1.350900891
> 14:00      0.467934478                     1.350900891
> 15:00      0.567593695                     1.350900891
> 16:00      0.617053734                     1.350900891
> 17:00      0.510519396                     1.350900891
> 18:00      0.412040288                     1.350900891
> 19:00      0.21313587                      1.350900891
> 20:00      0.197417633                     1.350900891
>
> Best regards
>
> Qingfan
>
>
>
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
>
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
>
> Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
>
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
>  
> Yahoo! Groups Links
>
>
>
>   


The primary EnergyPlus web site is found at:
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The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
 
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