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Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. here are some pictures of the Openstudio results. Any other idea?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. We are not HVAC engineers. We would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. here are some pictures of the Openstudio results. Any other idea?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. We Since we are not HVAC engineers. We engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results. results and here is the results of unmet hours troubleshooting. It seems to be more of reporting problem than an operational problem. Any other idea?idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. It seems to be According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem. Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem. problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the idf IDF file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the IDF file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

PS:

I believe I found some problems with the measure. In the IDF file, I found that CLGSETP_SCH_NO_SETBACK Summer Design Day with some setbacks during unoccupied hours is used to sizing calculation. While CLGSETP_SCH_NO_SETBACK Default and CLGSETP_SCH_NO_SETBACK Default|WntrDsn|Sat|Wkdy Day with no set back is used for simulation. I also checked with IDF files provide here and I think I'm right about it.

But, still, I can't figure out this. Setpoints are dictated to zones while plants and air loop systems are not available due to availability managers. How some zones manage to follow the setpoint and some don't?!

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the IDF file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

PS:

I believe I found some problems with the measure. In the IDF file, I found that CLGSETP_SCH_NO_SETBACK Summer Design Day with some setbacks during unoccupied hours is used to for sizing calculation. While CLGSETP_SCH_NO_SETBACK Default and CLGSETP_SCH_NO_SETBACK Default|WntrDsn|Sat|Wkdy Day with no set back is used for simulation. I also checked with IDF files provide here and I think I'm right about it.

But, still, I can't figure out this. Setpoints are dictated to zones while plants and air loop systems are not available due to availability managers. How some zones manage to follow the setpoint and some don't?!

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the IDF file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

PS:

I believe I found some problems with the measure. In the IDF file, I found that CLGSETP_SCH_NO_SETBACK Summer Design Day with some setbacks during unoccupied hours is used for sizing calculation. While CLGSETP_SCH_NO_SETBACK Default and CLGSETP_SCH_NO_SETBACK Default|WntrDsn|Sat|Wkdy Day with no set back is used for simulation. I also checked with IDF files provide here and I think I'm right about it.

But, still, I can't figure out this. Setpoints are dictated to zones while plants and air loop systems are not available due to availability managers. How some zones manage to follow the setpoint and some don't?!

Dear Developers and Engineers,

Our research group is going to perform an energy performance enhancement study on existing buildings. We found DOE commercial buildings suitable for our case study since it provides so many comparison opportunities.

Our study does not concern with HVAC equipment and control but we need it to be and work based on the latest version of ASHRAE 90.1. We decided to go with OpenStudio measures which simulate the mechanical (HVAC) system as well as constructions. I don't know how these measures work and whether is there any validation process or not. But according to this video, the measure named "Create DOE Prototype Building" was chosen.

As we were checking the simulation results, we found out some issues that I need to share with you (LargeOffice-ASHRAE 169-2006-2A):

• A high amount of unmet hours was observed. I believe it can be due to low temperature tolerance. According to Matt Larson's answer to this question I changed the temperature tolerance to 0.556C. But it didn't solve the problem. here are some pictures of the Openstudio results and here is the results of unmet hours troubleshooting. According to troubleshooting, a temperature difference of 2.5 F would reduce unmet hours significantly. Isn't it more of a reporting problem than an operational problem? Any idea to solve it?
• OpenStudio didn't provide any warnings concerned with the HVAC sizing or simulation. But Energyplus err file contained plenty of warnings that worried us. here is the IDF file and err. To be specific, warning associated with plant sizing and simulation seems pretty serious. Since we are not HVAC engineers, we would appreciate any advice to ignore or fix these issues.

Regards.

PS:

I believe I found some problems with the measure. In the IDF file, I found that CLGSETP_SCH_NO_SETBACK Summer Design Day with some setbacks during unoccupied hours is used for sizing calculation. While CLGSETP_SCH_NO_SETBACK Default and CLGSETP_SCH_NO_SETBACK Default|WntrDsn|Sat|Wkdy Day with no set back is used for simulation. I also checked with IDF files provide here and I think I'm right about it.

But, still, I can't figure out this. Setpoints are dictated to zones while plants and air loop systems are not available due to availability managers. How some zones manage to follow the setpoint and some don't?!it.