Dear All,
I refer to the idf (CoolingTowerWetBulbRangeOp.idf) that comes with E+ example files, that I have manipulated its "CondenserEquipmentOperationSchemes" to investigate how the branch flow rate varies based on outdoor WBT. However, I witnessed equal flow rate in the two CoolingTower branches irrespective of the WBT schedules.
Is this a bug or am I missing the point the scheme s meant to be. I have attached the file which I have modified a bit to investigate the above.
Further (this one is a general question), I thought that if I set "PlantOnSched=0" I expect the mass flow rate for the pump in the respective plant would be zero; however, I am not seeing this. As below for instance
Schedule:Compact,
PlantOnSched, !- Name
Fraction, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00,0.0; !- Field 3
Again, am I missing the point or is there something else that needs to be adjusted?
PS: Sorry, somehow I am unable to attach the modified idf, so I just cut and pasted the sections I changed on the original idf from E+ installation.
Change 1/2
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PlantEquipmentOperation:OutdoorWetBulb,
Year Round Tower Operation, !- Name
-50, !- Wet-Bulb Temperature Range 1 Lower Limit {C}
5, !- Wet-Bulb Temperature Range 1 Upper Limit {C}
All Towers, !- Range 1 Equipment List Name
5, !- Wet-Bulb Temperature Range 2 Lower Limit {C}
70, !- Wet-Bulb Temperature Range 2 Upper Limit {C}
One Tower; !- Range 2 Equipment List Name
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Change 2/2
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CondenserEquipmentList,
All Towers, !- Name
! CoolingTower:SingleSpeed,!- Equipment 1 Object Type
! Big Tower1, !- Equipment 1 Name
CoolingTower:SingleSpeed,!- Equipment 2 Object Type
Big Tower2; !- Equipment 2 Name
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No other changes thatn the above two on the idf.
Regards,
T