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Re: [EnergyPlus_Support] A question about humidity
HI, Mike,
I find in COIL:Water:SimpleCooling, the leaving relative humidity of coil is needed. Assume it's set to 95%, if it means the air relative humidity at the exit of coil is always 95%(constant) during the whole simulaiton?
Xu
----- Original Message -----
From: Michael J. Witte
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Friday, June 11, 2004 12:27 AM
Subject: Re: [EnergyPlus_Support] A question about humidity
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:
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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
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