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Re: [EnergyPlus_Support] Heat gain through wall_Output Variable



Did you read the IOReference?

Surface Inside Face Convection Heat Gain Rate [W]
Surface Inside Face Convection Heat Gain Rate per Area [W/m2]
Surface Inside Face Convection Heat Gain Energy [J]
These ?inside face convection heat gain? output variables describe the heat transferred by convection between the inside face and the zone air. The values can be positive or negative with positive indicating heat is being added to the surface?s face by convection. Different versions of the report are available including the basic heat gain rate (W), and a per unit area flux (W/m2), and an energy version (J).
Former Name: Prior to version 7.1, these outputs were called ?Surface Int Convection Heat * ? and had used the opposite sign convention.

At 12:22 PM 2/8/2013, Javed Iqbal wrote:


Thank you. When i try to use following variable the heat gain has negative value. Any thoughts?

Output:Variable,*,Surface Inside Face Convection Heat Gain Rate,hourly; !- Zone Average [W]

On Fri, Feb 8, 2013 at 2:02 PM, Jim Dirkes < jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
 

Javed,

 

Here are some examples:

Output:Variable,*,Surface Inside Face Convection Heat Transfer Coefficient,hourly; !- Zone Average [W/m2-K]

Output:Variable,*,Surface Inside Face Convection Heat Gain Rate,hourly; !- Zone Average [W]

Output:Variable,*,Surface Inside Face Convection Heat Gain Rate per Area,hourly; !- Zone Average [W/m2]

Output:Variable,*,Surface Inside Face Convection Heat Gain Energy,hourly; !- Zone Sum [J]

Output:Variable,*,Surface Inside Face Net Surface Thermal Radiation Heat Gain Rate,hourly; !- Zone Average [W]

Output:Variable,*,Surface Inside Face Net Surface Thermal Radiation Heat Gain Rate per Area,hourly; !- Zone Average [W/m2]

Output:Variable,*,Surface Inside Face Net Surface Thermal Radiation Heat Gain Energy,hourly; !- Zone Sum [J]

Output:Variable,*,Surface Inside Face Solar Radiation Heat Gain Rate,hourly; !- Zone Average [W]

Output:Variable,*,Surface Inside Face Solar Radiation Heat Gain Rate per Area,hourly; !- Zone Average [W/m2]

 

Note that you should specify in your IDF:

Output:VariableDictionary,IDF;

This will create a .rdd file which contains a listing of all possible report variables.  There are literally hundreds (or more).  I have only shown a few samples ? there are more that might work better for you.

 

 

 

James V Dirkes II, PE, BEMP, LEED AP
www.buildingperformanceteam.com
Energy Analysis, Commissioning & Training Services
1631 Acacia Drive, Grand Rapids, MI 49504 USA
616 450 8653

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [ mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Javed Iqbal
Sent: Friday, February 08, 2013 1:54 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Heat gain through wall_Output Variable

 

 

Hi,

 

I'm trying to get total heat gain through external wall in a zone. I found following variable gives surface heat gain.

 

Surface Inside Face Net Surface Thermal Radiation Heat Gain Rate

Surface Outside Face Solar Radiation Heat Gain Rate 

 

Can anybody suggest me what output variable i need to choose for this??

 

Thanks,

--

 

 

Javed Iqbal, LEED AP, CEA

Energy Analyst

 

 

 

 

 




--


Javed Iqbal, LEED AP, CEA
Energy Analyst









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