Juaneco,
Hola te respondo es español ya que veo que estas trabajando con el clima de bogota. Mira para determinar los flujos de aire hay que determinar los coeficientes de presion, tal y como tu dices, yo he hecho varios casos como ese y lo mejor que puedes hacer es determinar esos valores por medio de la CFD, ya que hay que tener en cuenta la influencia de lo que pasa a nivel macro, el vecindario.
cuentame como te va y si necesitas algo avisame, te podria ayudar de otra manera si te interesa.
Oscar HERNANDEZ
PHD candidate
France
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: fabio@xxxxxxxxxxxx
Date: Fri, 14 Oct 2011 16:08:46 +0000
Subject: [EnergyPlus_Support] Re: Modelling Vents in naturally ventilated buildings
Juaneco_2710,
I would go for the AirFlow Network model. See Group - Airflow Network in the Input/Output documentation.
I find "CIBSE AM10 - Natural ventilation in non-domestic buildings", a good reference for natural ventilation, common value used for discharge coefficients is 0.61, but this would imply you have the effective area opening of the vents (from manufacturer). For estimation of wind pressure coefficients you can refer to CIBSE AM10 as well.
Also, if you can use Design Builder, this has a feature do automatically place vents, it will assume some of this values, and wind pressure coefficients are based on the following document. http://www.designbuilder.co.uk/downloadsv1/AIVCWindPressureCoefficientData.pdf
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "juaneco_2710" <juaneco_2710@...> wrote:
>
> I am trying to model a small office building in Bogotá, Colombia. It uses natural ventilation as cooling mechanism. To increase the airflow, architects added vents above all windows. I woud like to know what is the correct way to model these vents: what kind of object to create, what are the correct coefficients (e.g. discharge coefficient) and so on.
>
> Thanks.
>
__._,_.___
Primary EnergyPlus support is found at:
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The primary EnergyPlus web site is found at:
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__,_._,___
Hola te respondo es español ya que veo que estas trabajando con el clima de bogota. Mira para determinar los flujos de aire hay que determinar los coeficientes de presion, tal y como tu dices, yo he hecho varios casos como ese y lo mejor que puedes hacer es determinar esos valores por medio de la CFD, ya que hay que tener en cuenta la influencia de lo que pasa a nivel macro, el vecindario.
cuentame como te va y si necesitas algo avisame, te podria ayudar de otra manera si te interesa.
Oscar HERNANDEZ
PHD candidate
France
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: fabio@xxxxxxxxxxxx
Date: Fri, 14 Oct 2011 16:08:46 +0000
Subject: [EnergyPlus_Support] Re: Modelling Vents in naturally ventilated buildings
Juaneco_2710,
I would go for the AirFlow Network model. See Group - Airflow Network in the Input/Output documentation.
I find "CIBSE AM10 - Natural ventilation in non-domestic buildings", a good reference for natural ventilation, common value used for discharge coefficients is 0.61, but this would imply you have the effective area opening of the vents (from manufacturer). For estimation of wind pressure coefficients you can refer to CIBSE AM10 as well.
Also, if you can use Design Builder, this has a feature do automatically place vents, it will assume some of this values, and wind pressure coefficients are based on the following document. http://www.designbuilder.co.uk/downloadsv1/AIVCWindPressureCoefficientData.pdf
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "juaneco_2710" <juaneco_2710@...> wrote:
>
> I am trying to model a small office building in Bogotá, Colombia. It uses natural ventilation as cooling mechanism. To increase the airflow, architects added vents above all windows. I woud like to know what is the correct way to model these vents: what kind of object to create, what are the correct coefficients (e.g. discharge coefficient) and so on.
>
> Thanks.
>
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
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 currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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__,_._,___