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Re: [EnergyPlus_Support] questions about VAV
It is not possible to model what you suggest below. We are looking at your
other posts to determine why the simulation is not doing what you expect. I
apologize for the delay.
Mike
On 26 Jul 2004, at 11:15, Xu H.T wrote:
>
> I simulate a very small office room (5.1mX2.6mX3.6m) based on HongKong weather
> data. The mixed air(return air and fresh air) flow through cooling coil and
> then supply into the room directly. The vav scheme is emplored.
>
> I want to simulate the whole energy consumption in E+. However, some problems
> puzzle me.
>
> First, I use SINGLE DUCT:VAV:NOREHEAT object and variable speed fan. From the
> simulation results, flow rate is constant. Of course it is wrong. Then I
> wonder if variable speed fan can be used to control air flowrate and no VAV
> duct is used? At this stage, if it can be said that only primary air loop
> exists and no zone equpiment? I try it, but error message occurs:
>
> ** Severe ** Zone Equipment Return Node (Return Air Path or Controlled
> Zone Equip Configuration) not valid=ZONE OUTLET NODE ** ~~~ ** Occurs
> in Primary Air Loop=VAV SYS ** Fatal ** Errors found getting Air Primary
> Loop
>
> Any guy can give me some instructions? Thanks
>
> Xu
>
> ----- Original Message -----
> From: Xu H.T
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Sent: Monday, July 26, 2004 10:00 AM
> Subject: [EnergyPlus_Support] about air loop
>
>
> Dear,
>
> I wonder, in E+, if the air loop and zone equpiment loop are both
> absolutely necessarily? How about only air loop without zone equpiment
> loop?
>
> Xu
>
>
>
> [Non-text portions of this message have been removed]
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
EnergyPlus-Support@xxxxxxxx
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