As far as I know, there is no theoretical model available in EPlus to give you the temperature gradient with height.
With the room air model, you define the inlet and outlet air positions and tempaerture readings, and the thermostat position, and define a set of number yourself to represent the real situation.
======================
To get a feel of the temperature diference, you may separate the atrium with a number of IRtransparent partitions. This will allow the radiation to reach the floor level, and no air movement of the whole volume. This is now a multi-zone atrium.
The natural ventilation on the other part of the bullding next to each section may give the temperature of the atrium without full convection. If this matches the assumed room air curve, then the situation is probably a real one.
If you now open and close the skylight, there will be a transient condition for the radiation component of the heat balance calculation. The change of the temperature of the different section may give you some other information.
====================================
When the atrium is simulated as a zone, one mean temperature is reported. The room air model place this temperature at the thermostat level and calculate the temperature at the height according to the roof temperature and the floor temperature using the curve assumed.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xyliu925@xxxxxxxxx
Date: Sun, 17 Jul 2011 13:44:30 +0000
Subject: [EnergyPlus_Support] tempeature measurement in the atrium
__._,_.___
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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With the room air model, you define the inlet and outlet air positions and tempaerture readings, and the thermostat position, and define a set of number yourself to represent the real situation.
======================
To get a feel of the temperature diference, you may separate the atrium with a number of IRtransparent partitions. This will allow the radiation to reach the floor level, and no air movement of the whole volume. This is now a multi-zone atrium.
The natural ventilation on the other part of the bullding next to each section may give the temperature of the atrium without full convection. If this matches the assumed room air curve, then the situation is probably a real one.
If you now open and close the skylight, there will be a transient condition for the radiation component of the heat balance calculation. The change of the temperature of the different section may give you some other information.
====================================
When the atrium is simulated as a zone, one mean temperature is reported. The room air model place this temperature at the thermostat level and calculate the temperature at the height according to the roof temperature and the floor temperature using the curve assumed.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xyliu925@xxxxxxxxx
Date: Sun, 17 Jul 2011 13:44:30 +0000
Subject: [EnergyPlus_Support] tempeature measurement in the atrium
Hi Everyone,
What model I can use to output a set of temperatures at different height in a natural ventilated atrium?
Thanks
What model I can use to output a set of temperatures at different height in a natural ventilated atrium?
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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