Re: [EnergyPlus_Support] A question about humidity

["Michael J. Witte" <mjwitte@xxxxxxxx>]

The supply air humidity ratio in the ZONE SIZING object is only used in 
calculating equipment sizes.  During the simulation, the supply air humidity 
ratio will vary according to the inlet conditions and the cooling coil 
performance.

Mike


On 10 Jun 2004, at 11:25, Xu H.T wrote:

>   Dear,
> 
>   The humidity control in the office room is assumed to be passive, meaning that
>   only supply temperature is controlled. So I want to investigate the passive
>   humidity level characteristic in the conditioned room.
> 
>   For the simulation in E+, pump and fan need to input volumetric flow rate by a
>   special numerical value, if Do the zone, system or plant sizing calculations
>   are not set. In order to use the AUTOSIZE for the flow rate input, the RUN
>   CONTROL should need to be set. However, in the Design Objects such as  Zone
>   Sizing, the Zone cooling design supply air humidity ratio is also needed. 
> 
>   My aim is to investigate the humidity ratio for the supply air at different
>   conditions. For example, I set the humidity ratio is 0.012kg-H2O/kg-AIR in
>   Zone Sizing for cooling design. So, I wonder if this value in the zone supply
>   inlet is constant (always 0.012kg-H2O/kg-AIR?), regardless of other condition
>   changes such as outside air humidity ratio during the simulation in E+? 
> 
>   Thanks.
> 
>   Rgs, 
>   Xu
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> 
> 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.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 



========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx



------------------------ Yahoo! Groups Sponsor --------------------~--> 
Yahoo! Domains - Claim yours for only $14.70
http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/dkFolB/TM
--------------------------------------------------------------------~-> 

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.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
     http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
     EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
     http://docs.yahoo.com/info/terms/