[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [EnergyPlus_Support] Re: No matching inlet or exhaust nodes....

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: No matching inlet or exhaust nodes....
From: Richard Raustad <RRaustad@xxxxxxxxxxxx>
Date: Fri, 21 Mar 2008 11:45:32 -0400
Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys
Delivered-to: linda@xxxxxxxxxx
Delivered-to: mailing list EnergyPlus_Support@xxxxxxxxxxxxxxx
Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=lima; d=yahoogroups.com; b=sgtCL6nP9BDxbQZy+aVVosItOHXH+Lz8Ap3PZtrxk5nA/aseIDWwt+O4Sr6jFxsoTu2h3kk/ffA+XhH7TcIKF+vxlW2dhxzS14B8Sd6B+Ksd0fuMNftbNGv41xOgde9Y;
In-reply-to: <C3DBC55BC8F3EC4FA597BDDCAE4BBFE2047CCFCD@ex-be02.burohappold.com>
List-id: <EnergyPlus_Support.yahoogroups.com>
List-unsubscribe: <mailto:EnergyPlus_Support-unsubscribe@yahoogroups.com>
Mailing-list: list EnergyPlus_Support@xxxxxxxxxxxxxxx; contact EnergyPlus_Support-owner@xxxxxxxxxxxxxxx
Organization: Florida Solar Energy Center
References: <C468F8F9013C3440B9DCC8273A8FE13F0AACCF7C@mail-1a.nrel.gov> <fro5cv+mpuh@eGroups.com> <C3DBC55BC8F3EC4FA597BDDCAE4BBFE2047CCFCD@ex-be02.burohappold.com>
Reply-to: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sender: EnergyPlus_Support@xxxxxxxxxxxxxxx
User-agent: Thunderbird 2.0.0.12 (Windows/20080213)

Use the Mixing objects.

Minu Agarwal wrote:
>
> Thanks Brent and JV Dirkes,
>
> I too was trying to model an exhaust fan and your code helped a lot. I
> agree with JV Dirkes that the Node connections are not intuitive and
> difficult to develop without example files.
>
> Now,
>
> I added an exhaust fan to the 5ZoneReturnFan example file. I am not
> getting errors on the network but there is no difference in the results
> for air flow into the zone or infiltration rate. I do not want to
> increase the infiltration rate. Basically I want the zone with the
> exhaust fan to draw air from the adjoining rooms. Does anyone know how
> to set this up?
>
> Minu Agarwal
>
> CoSA, Buro Happold Consulting Engineers PC
> 100 Broadway
> New York, NY 10005
> USA
> Telephone: +1 212 334 2025
> Fax: +1 212 334 5528
>
> ________________________________
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>] On Behalf Of JV Dirkes II
> Sent: Tuesday, March 18, 2008 6:27 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> Subject: [EnergyPlus_Support] Re: No matching inlet or exhaust nodes....
>
> Dear Brent,
>
> Thank you very much. That helped a lot.
>
> p.s., Is there a way I could have figured this out on my own? If not,
> I am hoping for more schematics in the Help file with annotations,
> especially regarding node locations!
>
> p.p.s., Any chance I can get help for understanding what a 'matching
> outlet node' is? (This is another item mentioned in the original
> post.) An example error is:
>
> ** Severe ** Node Connection Error, Node="NODEIN_CHWTR PUMP_1", Inlet
> node did not find an appropriate matching "outlet" node.
>
> I really have no idea what a matching outlet node is supposed to be...
>
> My code looks like:
>
> BRANCH,
> Branch_CHWtr Supply Pump,
> Autosize,
> PUMP:CONSTANT SPEED,
> CHWtr Pump_1,
> NodeIn_ChWtr Pump_1,
> NodeOut_ChWtr Pump_1,
> ACTIVE;
>
> Pump:Constant Speed,
> CHWtr Pump_1,
> NodeIn_ChWtr Pump_1,
> NodeOut_ChWtr Pump_1,
> Autosize,
> 119443,
> Autosize,
> 0.9,
> 0,
> CONTINUOUS,
> ;
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> <mailto:EnergyPlus_Support%40yahoogroups.com> , "Griffith, Brent"
> <brent_griffith@...> wrote:
> >
> > The BRANCH input object is not used or needed on the demand side of
> air
> > system loops. Try deleting it. If that doesn't fix it, then please up
> > load the input file.
> >
> >
> >
> >
> >
> > ________________________________
> >
> > From: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> > [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> <mailto:EnergyPlus_Support%40yahoogroups.com> ] On Behalf Of JV Dirkes
> II
> > Sent: Monday, March 17, 2008 12:57 PM
> > To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> > Subject: [EnergyPlus_Support] Re: No matching inlet or exhaust
> nodes....
> >
> >
> >
> > Dear EPlus support,
> >
> > In hopes of getting a response for this post, I'll re-phrase one of
> > the questions with more detail...
> >
> > My system model has a constant volume fan and each zone has a single
> > Branch with a reheat coil. When I defined this as follows, I receive
> > the Warning shown below (which does NOT occur when running
> > "TermReheatZoneExh.idf" from the Example files, even though I've tried
> > to duplicate the node occurrences):
> >
> > ZONE EQUIPMENT LIST,
> > ZoneEqList_GardenLevel, !- Name
> > AIR DISTRIBUTION UNIT, !- KEY--Zone Equipment Type 1
> > DirAir_Zone1_AH1, !- Type Name 1
> > 1, !- Cooling Priority 1
> > 1, !- Heating Priority 1
> > ZONE EXHAUST FAN, !- KEY--Zone Equipment Type 2
> > ExhFan_Zone1_AH1, !- Type Name 2
> > 2, !- Cooling Priority 2
> > 2; !- Heating Priority 2
> >
> > AIR DISTRIBUTION UNIT,
> > DirAir_Zone1_AH1, !- Air Distribution Unit Name
> > NodeOut_Rht_GardenLevel, !- Air Dist Unit Outlet Node Name
> > SINGLE DUCT:CONST VOLUME:REHEAT, !- KEY--System Component Type 1
> > RhtCTRL_GardenLevel; !- Component Name 1
> >
> > SINGLE DUCT:CONST VOLUME:REHEAT,
> > RhtCTRL_GardenLevel, !- Name of System
> > SchCpct_AlwaysOn, !- System Availability schedule
> > NodeOut_Rht_GardenLevel, !- Unit Air Outlet Node
> > NodeOut_DirAir_GardenLevel, !- Unit Air Inlet Node
> > Autosize, !- Maximum air flow rate {m3/s}
> > , !- Control node
> > COIL:GAS:HEATING, !- Reheat Component Object
> > RhtCoil_GardenLevel, !- Name of Reheat Component
> > , !- Max Reheat Water Flow {m3/s}
> > , !- Min Reheat Water Flow {m3/s}
> > 0.001; !- Convergence Tolerance
> >
> > BRANCH,
> > Branch_Rht_GardenLevel, !- Branch Name
> > Autosize, !- Maximum Branch Flow Rate {m3/s}
> > COIL:GAS:HEATING, !- Comp1 Type
> > RhtCoil_GardenLevel, !- Comp1 Name
> > NodeOut_DirAir_GardenLevel, !- Comp1 Inlet Node Name
> > NodeOut_Rht_GardenLevel, !- Comp1 Outlet Node Name
> > ACTIVE; !- Comp1 Branch Control Type
> >
> > COIL:Gas:Heating,
> > RhtCoil_GardenLevel, !- Coil Name
> > SchCpct_HtgAvail_AH1, !- Available Schedule
> > 0.8, !- Gas Burner Efficiency of the Coil
> > Autosize, !- Nominal Capacity of the Coil {W}
> > NodeOut_DirAir_GardenLevel, !- Coil_Air_Inlet_Node
> > NodeOut_Rht_GardenLevel, !- Coil_Air_Outlet_Node
> > , !- Coil_Temp_Setpoint_Node
> > 50, !- Parasitic Electric Load {W}
> > HtgCoil_ PLF-FPLR_AH1, !- Part load fraction correlation
> > 0; !- Parasitic Gas Load {W}
> >
> > ** Warning ** Node used as an inlet more than once:
> > NODEOUT_DIRAIR_GARDENLEVEL
> > ** ~~~ ** Used by : BRANCH, name=BRANCH_RHT_GARDENLEVEL
> > ** ~~~ ** as inlet for: COIL:GAS:HEATING,
> > name=RHTCOIL_GARDENLEVEL
> > ** ~~~ ** and by : SINGLE DUCT:CONST VOLUME:REHEAT,
> > name=RHTCTRL_GARDENLEVEL
> > ** ~~~ ** as inlet for: COIL:GAS:HEATING,
> > name=RHTCOIL_GARDENLEVEL
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> > <mailto:EnergyPlus_Support%40yahoogroups.com> , "JV Dirkes II"
> > <jvd2pe@>
> > wrote:
> > >
> > > Dear EPlus Support,
> > >
> > > I have an assortment of Severe errors which are described as:
> > > "ZoneExhaust node did not find a matching inlet node..." or
> > > "Inlet node did not find an appropriate matching 'outlet' node."
> > >
> > > For my exhaust fan, I have defined the CONTROLLED ZONE EQUIP
> > > CONFIGURATION exhaust node the same as the Exhaust Fan inlet node. I
> > > do not understand what a "matching inlet node" is supposed to be.
> > > Please help!
> > >
> > > Similarly, I do not understand what a matching 'outlet' node is. The
> > > error message refers in several cases to the node which is the
> return
> > > air inlet to an Outside Air Mixer. Another case is an inlet node to
> a
> > > chilled ware pump on the supply side of a Plant Loop.
> > >
> > > Thanks for your help!
> > >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
> This message has been scanned by MailController
> <http://www.mailcontroller.altohiway.com/ 
> <http://www.mailcontroller.altohiway.com/>> .
>
> Click here
> <https://www.mailcontroller.altohiway.com/sr/BKtIElUQgHBSlWFbLAN8JPEmg1W 
> <https://www.mailcontroller.altohiway.com/sr/BKtIElUQgHBSlWFbLAN8JPEmg1W>
> QCQnumm!GAYzzWmnZvkJwgs!ntzy4bPQdNhacS+9+EVBTxgyfKWlxf2Ln4w2DYo5zBbuTQUs
> Q2hqKBip6WUbFVQueU3wObis1470GfUJsfmwlplzlhWIMcoJ70lzhs55Ksst086XEjgUTfYa
> L7wDLL86JZl!2rL+OaWZQdk94+eG35o5iVyyAgFD8Vo53+MFVoEYm> to report this
> email as spam.
>
> [Non-text portions of this message have been removed]
>
>  

-- 
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL  32922-5703
Phone:   (321) 638-1454
Fax:     (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu

UCF - From Promise to Prominence: Celebrating 40 Years


------------------------------------

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

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

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> 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/

References:
- RE: [EnergyPlus_Support] Re: No matching inlet or exhaust nodes....
  - From: Griffith, Brent

Prev by Date: Re: [EnergyPlus_Support] Reheat
Next by Date: Re: [EnergyPlus_Support] Reheat
Previous by thread: RE: [EnergyPlus_Support] Re: No matching inlet or exhaust nodes....
Next by thread: Re: [EnergyPlus_Support] Re: No matching inlet or exhaust nodes....
Index(es):
- Date
- Thread