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1 | initial version |
The "Time Not Comfortable Based on Simple ASHRAE 55-2004" from the "Comfort and Setpoint Not Met Summary" table in the "Annual Building Utility Performance Summary" report is based on the same values as what appears in the output variable:
Output:Variable,*,Zone Thermal Comfort ASHRAE 55 Simple Model Summer or Winter Clothes Not Comfortable Time,hourly; !- Zone Sum [hr]
But the value from the table is based on a sum of the times that one or more zones is not comfortable. The report is about the whole building and it would not make sense to simply add up the hours for each zone since that could (conceivably) result in more than 8760 hours per year uncomfortable, especially if the building had a large number of zones. Since the goal of that table was to show how many hours per year were unmet hours for ASHRAE 90.1 Appendix G, it seemed consistent to show the "not comfortable" hours using the same approach.
To replicate the values, you should be able to use the output variable shown above using "Detailed" timesteps and then using a spreadsheet, add up the times that at least one zone is shown as not comfortable.
2 | No.2 Revision |
The "Time Not Comfortable Based on Simple ASHRAE 55-2004" from the "Comfort and Setpoint Not Met Summary" table in the "Annual Building Utility Performance Summary" report is based on the same values as what appears in the output variable:
Output:Variable,*,Zone Thermal Comfort ASHRAE 55 Simple Model Summer or Winter Clothes Not Comfortable Time,hourly; !- Zone Sum [hr]
But the value from the table is based on a sum of the times that one or more zones is not comfortable. The report is about the whole building and it would not make sense to simply add up the hours for each zone since that could (conceivably) result in more than 8760 hours per year uncomfortable, especially if the building had a large number of zones. Since the goal of that table was to show how many hours per year were unmet hours for ASHRAE 90.1 Appendix G, it seemed consistent to show the "not comfortable" hours using the same approach.
To replicate the values, you should be able to use the output variable shown above using "Detailed" timesteps and then using a spreadsheet, add up the times that at least one zone is shown as not comfortable.
Please also keep in mind that the time that is not comfortable is accumulated only for timesteps that the zone is occupied. In this case, "occupied" means having a the number of occupants times the occupancy schedule being greater than zero for a particular timestep.
3 | No.3 Revision |
The "Time Not Comfortable Based on Simple ASHRAE 55-2004" from the "Comfort and Setpoint Not Met Summary" table in the "Annual Building Utility Performance Summary" report is based on the same values as what appears in the output variable:
Output:Variable,*,Zone Thermal Comfort ASHRAE 55 Simple Model Summer or Winter Clothes Not Comfortable
Time,hourly;Time,detailed; !- Zone Sum [hr]
But the value from the table is based on a sum of the times that one or more zones is not comfortable. The report is about the whole building and it would not make sense to simply add up the hours for each zone since that could (conceivably) result in more than 8760 hours per year uncomfortable, especially if the building had a large number of zones. Since the goal of that table was to show how many hours per year were unmet hours for ASHRAE 90.1 Appendix G, it seemed consistent to show the "not comfortable" hours using the same approach.
To replicate the values, you should be able to use the output variable shown above using "Detailed" timesteps and then using a spreadsheet, add up the times that at least one zone is shown as not comfortable.
Please also keep in mind that the time that is not comfortable is accumulated only for timesteps that the zone is occupied. In this case, "occupied" means having a the number of occupants times the occupancy schedule being greater than zero for a particular timestep.