Not easy. AFN will give you many details.
However, I only look for the zone temperature with ventilation object.
Use external shades and internal heat control (vent the heat sources out directly.)
The main difference with and without AFN is the exact location of the air flowing in and out of the building and the air flow path. They are dependent on the outside wind condition.
If the ACH rate is about the same as with the AFN simulation, the room temperature below 28°C may be considered as comfortable simulated using EPlus with the windows closed and with ventilation object to feed the outside air into the building. Mr. Ooi, KB may be able to add to this.
In the actual buiding, the windows and louvers would be open to provide a similar ACH rate or moving air in the room with a fan.
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: zqianmin@xxxxxxxxx
Date: Thu, 21 Jul 2011 10:40:29 -0700
Subject: [EnergyPlus_Support] Natural Ventilation
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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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However, I only look for the zone temperature with ventilation object.
Use external shades and internal heat control (vent the heat sources out directly.)
The main difference with and without AFN is the exact location of the air flowing in and out of the building and the air flow path. They are dependent on the outside wind condition.
If the ACH rate is about the same as with the AFN simulation, the room temperature below 28°C may be considered as comfortable simulated using EPlus with the windows closed and with ventilation object to feed the outside air into the building. Mr. Ooi, KB may be able to add to this.
In the actual buiding, the windows and louvers would be open to provide a similar ACH rate or moving air in the room with a fan.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: zqianmin@xxxxxxxxx
Date: Thu, 21 Jul 2011 10:40:29 -0700
Subject: [EnergyPlus_Support] Natural Ventilation
Hello, I have question about natural ventilation.
How to model natural ventilation in energyplus? Do I need to define like window opening schedule or any precalculation? There is no auto control for these window, and what I have are window material, size, and radiant system design. For local condition, dry hot summer temperature, natural ventilation take care of the latent load firstly, even it will increase zone sensible load, and the radiant cooling will take care the sensible load. No mechanical fan at all.
I saw the object of AirFlowNetwork, but haven't try it yet. I would appreciate your opinion. Thanks.
Qianmin
__._,_.___
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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