Hi, Vieira
I am still frying to figure out what is the relationship of the controlled zone to the rest of the building.
The attached .csv is the result of your second up loaded IDF.
You will see that some of the zones have very high temperature.
The position of the fan in the air loop should not affect the performance much. However, you need to state blowthrough or drawthogh in one of the fields, and node connection sequence must match. I have not found these yet.
The building is quite large. It will take some time for me to identify all the locations.
How many AHU do you intend to use in the final design? One AHU per floor for many zones, and one fan coil unit per zone would have different branch arrangements.
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: vieira.jose99@xxxxxxxxx
Date: Wed, 30 Mar 2011 15:26:39 +0000
Subject: [EnergyPlus_Support] Re: AirTerminal:SingleDuct:Uncontrolled
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Primary EnergyPlus support is found at:
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The primary EnergyPlus web site is found at:
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Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: vieira.jose99@xxxxxxxxx
Date: Wed, 30 Mar 2011 15:26:39 +0000
Subject: [EnergyPlus_Support] Re: AirTerminal:SingleDuct:Uncontrolled
Hello,
Thank-you for your help xszhang2010.
I just had to adjust the set point manager to get 25ºC maximum during the cooling season. I changed the supply fan to be before the heating coil, because the way I had it (water cooling coil then water heating coil then supply fan) I could not get a decent setpoint manager setup for the water:coil controllers.
I also added a return fan.
But now I have another issue with the variable fans. They are not varying!? I don't understand why not. Also to get temperatures in the 20 to 25ºC range all year round, I had to force in the Sizing:Zone the option Outdoor Air Method to a reasonable flow or else the system doesn't achieve de 20ºC minimum in winter and passes the 25ºC maximum in summer. I think it is because the Fans are not varying there flow to a greater value of air flow, as I said the air flow is at a constant level.
I have put the .idf in the file section, here is the link: http://tech.groups.yahoo.com/group/EnergyPlus_Support/files/_Problem_Submittals/
Best regards to all,
Vieira
Thank-you for your help xszhang2010.
I just had to adjust the set point manager to get 25ºC maximum during the cooling season. I changed the supply fan to be before the heating coil, because the way I had it (water cooling coil then water heating coil then supply fan) I could not get a decent setpoint manager setup for the water:coil controllers.
I also added a return fan.
But now I have another issue with the variable fans. They are not varying!? I don't understand why not. Also to get temperatures in the 20 to 25ºC range all year round, I had to force in the Sizing:Zone the option Outdoor Air Method to a reasonable flow or else the system doesn't achieve de 20ºC minimum in winter and passes the 25ºC maximum in summer. I think it is because the Fans are not varying there flow to a greater value of air flow, as I said the air flow is at a constant level.
I have put the .idf in the file section, here is the link: http://tech.groups.yahoo.com/group/EnergyPlus_Support/files/_Problem_Submittals/
Best regards to all,
Vieira
__._,_.___
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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