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Re: [EnergyPlus_Support] Re: Confusion over Fan in AirFlow Network

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: Confusion over Fan in AirFlow Network
From: Lixing Gu <gu@xxxxxxxxxxxx>
Date: Thu, 14 Feb 2008 08:25:01 -0500
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Ooi:

If you only want to simulate mutizone airflows, you don't need HVAC. The 
input choice of the AirflowNetwork Control field is Multizone without 
Distribution in the AirflowNetwork Simulation object.

Lixing
----- Original Message ----- 
From: "ooikoonbeng2004" <ooi_kb3@xxxxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Wednesday, February 13, 2008 6:00 PM
Subject: [EnergyPlus_Support] Re: Confusion over Fan in AirFlow Network


> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Lixing Gu <gu@...> wrote:
> Lixing,
>
> My zone has only a door at the bottom and a window at the top. There
> is no HVAC. Do i still need an Air Primary Loop?
>
> regards
> ooi
>>
>> Ooi:
>>
>> I don't have suggestiongs how much attic infiltration is. You may
> try to
>> find values in other publications.
>>
>> The AirflowNetwork model requires an air primary loop. Any coils
> and fan
>> have to be a part of the loop. The allowed coil types are listed in
> the
>> Energy+.idd and Input Output Reference. An example input file of
>> AirflowNetwork_Multizone_House.idf uses
> UNITARYSYSTEM:HEATPUMP:AIRTOAIR. The
>> unitary system uses allowed coil types. The answer to your question
> is that
>> if a compact unitary system uses allowed coil types, it should work.
>>
>> Hope my answers help.
>>
>> Best regards,
>>
>> Lixing
>> ----- Original Message ----- 
>> From: "ooikoonbeng2004" <ooi_kb3@...>
>> To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
>> Sent: Wednesday, July 04, 2007 12:36 AM
>> Subject: [EnergyPlus_Support] Re: Confusion over Fan in AirFlow
> Network
>>
>>
>> > Lixing,
>> >
>> > Many thanks for how to disable the AirFlow Network.
>> >
>> > i shall try Infiltration first. Any adice on the variables to use
>> > for this object if the infiltration to the attic, space between
> the
>> > horizontal overhang ceilings and the sloping roof, is only through
>> > the corrugations in the roofing metal sheets as they are nailed
> to a
>> > horizontal wood?
>> >
>> > Meanwhile, is Compact HVAC:System:Unitary supported if i use the
>> > choice as MULTIZONE WITH DISTRIBUTION or MULTIZONE WITH
> DISTRIBUTION
>> > ONLY DURING FAN OPERATION in the AirflowNetwork Control field in
> the
>> > AirflowNetwork Simulation object?
>> >
>> > regards,
>> > ooi
>> > Meanwhile can you let me know if --- In
>> > EnergyPlus_Support@xxxxxxxxxxxxxxx, Lixing Gu <gu@> wrote:
>> >>
>> >> Ooi:
>> >>
>> >> It seems the input file does not specify a fan as Zone2WindACFan,
>> > so that
>> >> the first error message occurs (GetFanIndex: Fan not
>> > found=Zone2WindACFan).
>> >> In other words, Zone2WindACFan is not listed in fan index. You
> may
>> > define
>> >> the fan in the AIRFLOWNETWORK:DISTRIBUTION:COMPONENT CONSTANT
>> > VOLUME FAN
>> >> object. Since the fan is not listed in the fan index, the prgram
>> > can not go
>> >> any further.
>> >>
>> >> My suggestion is to disable the AirflowNetwork model first to see
>> > whether
>> >> you can eliminate the first error or not. The model disablement
> is
>> > to use
>> >> the choice of NO MULTIZONE OR DISTRIBUTION in the AirflowNetwork
>> > Control
>> >> field in the AirflowNetwork Simulation object. If you still have
>> > problems,
>> >> please upload the file. I will take a look.
>> >>
>> >> By the way, Window AC is not supported for the time being if you
>> > use the
>> >> choice as MULTIZONE WITH DISTRIBUTION or MULTIZONE WITH
>> > DISTRIBUTION ONLY
>> >> DURING FAN OPERATION in the AirflowNetwork Control field in the
>> >> AirflowNetwork Simulation object
>> >>
>> >> Thanks.
>> >>
>> >> Lixing Gu
>> >>
>> >> ----- Original Message ----- 
>> >> From: "ooikoonbeng2004" <ooi_kb3@>
>> >> To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
>> >> Sent: Monday, July 02, 2007 2:06 AM
>> >> Subject: [EnergyPlus_Support] Confusion over Fan in AirFlow
> Network
>> >>
>> >>
>> >> > Confusion over Fan
>> >> >
>> >> >
>> >> > Hello everyone,
>> >> >
>> >> > i am starting to use the AirFlow Network with only the
>> >> > MultiZone:Surfaces referring to the SIMPLE house example.
>> >> >
>> >> > From the .err file, a zone needs two surfaces and i have added
> a
>> >> > door to each zone. So, correct me if i am wrong, the air in the
>> >> > AirFlow Network goes through ceiling crack/leakage and door
>> > leakage.
>> >> >
>> >> > As i am only studying the thermal aspects of the building
>> > envelop, i
>> >> > do not use a Direct air or fan as in the Simple House example.
>> > But i
>> >> > have a Window AirConditioner in the second zone.
>> >> >
>> >> > The messages in .err file, includes:
>> >> >
>> >> > GetFanIndex: Fan not found=Zone2WindACFan
>> >> > GetAirflowNetworkINput: The fan type defined in
>> >> > AIRFLOWNETWORK:DISTRIBUTION:COMPONENT CONSTANT VOLUME FAN =
>> >> > ZONE2WINDACFAN is not allowed etc.
>> >> >
>> >> > The 'Fan' in the error message can only refer to the fan in
>> > Window
>> >> > AC. But how do i enter the index of this fan or overcome the
>> > errors
>> >> > in the .err file?
>> >> >
>> >> > kind regards,
>> >> > ooi
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > 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.
>> >> >
>> >> > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf
>> > under the
>> >> > Documentation link and press the "search" button.
>> >> >
>> >> > Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > 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.
>> >
>> > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf
> under the
>> > Documentation link and press the "search" button.
>> >
>> > Yahoo! Groups Links
>> >
>> >
>> >
>> >
>>
>
>
>
>
> 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.
>
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the 
> Documentation link and press the "search" button.
>
> Yahoo! Groups Links
>
>
>
> 



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References:
- [EnergyPlus_Support] Re: Confusion over Fan in AirFlow Network
  - From: ooikoonbeng2004

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