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DX-Coil for data center applications
 
  
 
  
 
 
 
 
 
 
    
        
        asked 9 years ago  
 
 nielex's avatar  
 
 
 
 
    
        
        updated 9 years ago  
 
 Julien Marrec's avatar  
 
 
 
 
 
I'm using energyplus to simulate a data center. CRAC units with correspondingly high capacities often have 2 stages.
So I 'm using the coil object Coil:Cooling:DX:TwoStageWithHumidityControlMode.
 
Is it necessary to set the "Enhanced Dehumidification Mode" to 1 for the control types "CoolReheat" and "Multimode"? 
Or are both of these parameters independent of each other? 
 
Furthermore I'm not sure which control type is the right one for typical CRAC units?
 
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        answered 9 years ago  
 
 Chandan Sharma's avatar  
 
 
 
 
 
Per the documentation (scroll down to field "Number of Enhanced Dehumidification Modes"), yes this field should be set to 1 for enhanced dehumidification control types. In E+ v 8.3, example file 1ZoneDataCenterCRAC_wPumpedDXCoolingCoil.idf models data center with CRAC units which could be a good starting point here.
 
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Thank you for your evidence. But the example file does only use the object "Coil:Cooling:DX:SingleSpeed".
And so it would be interesting if somebody use also the object "TwoStageWithHumidityControlMode" with their specifies parameter for simulating data centers.
A simulation with the "CoolReheat" mode also takes much more time. I'am not sure about the difference for the both modes.
nielex's avatar
                        nielex
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        9 years ago
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        Asked:  9 years ago  
 
 
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        Last updated: Sep 21 '15 
 
 
 
 
 
 
 
 
 
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