lib/openstudio-standards/standards/necb/NECB2011/nv.md in openstudio-standards-0.2.14 vs lib/openstudio-standards/standards/necb/NECB2011/nv.md in openstudio-standards-0.2.15.pre.rc1
- old
+ new
@@ -4,12 +4,12 @@
## Description
The workflow of this measure is as follows:
* Ask for users' inputs for below arguments:
* nv_type: whether to add NV to a building model or not
* nv_opening_fraction: what is the opening fraction of windows (this value is used to calculate the opening area of windows for NV)
- * nv_Tout_min: As per E+ I/O Reference, "minimum outdoor temperature is the outdoor temperature (in Celsius) below which ventilation is shut off. This lower temperature limit is intended to avoid overcooling a space, which could result in a heating load."
- * nv_Delta_Tin_Tout: As per E+ I/O Reference, "Delta temperature is the temperature difference (in Celsius) between the indoor and outdoor air dry-bulb temperatures below which ventilation is shutoff."
+ * nv_temp_out_min: As per E+ I/O Reference, "minimum outdoor temperature is the outdoor temperature (in Celsius) below which ventilation is shut off. This lower temperature limit is intended to avoid overcooling a space, which could result in a heating load."
+ * nv_delta_temp_in_out: As per E+ I/O Reference, "Delta temperature is the temperature difference (in Celsius) between the indoor and outdoor air dry-bulb temperatures below which ventilation is shutoff."
* Loop through **ZoneHVACEquipmentLists**.
* Get which thermal zone is served by each of the "ZoneHVACEquipmentLists" objects.
* Get heating/cooling setpoint temperature schedules for the thermal zone from the osm file.
* Create an adjustment of heating/cooling setpoint temperature schedules.
(Note that these schedules are used in the "ZoneVentilation:DesignFlowRate" and "ZoneVentilation:WindandStackOpenArea" objects)
@@ -34,10 +34,10 @@
to avoid complexity of finding the NPL of a building.
Hence, this measure excludes stack-driven NV.
* It uses a built-in object called **AvailabilityManager:HybridVentilation** in EnergyPlus to avoid simultaneous NV and HVAC system operation.
* Note that **Ventilation Control Mode Schedule Name** was set by default.
Hence, the integer value in the schedule is set to 1 (i.e. temperature control).
- * Note that users' input for nv_Tout_min is used for the fields of "Minimum Outdoor Temperature".
+ * Note that users' input for nv_temp_out_min is used for the fields of "Minimum Outdoor Temperature".
* As per E+ I/O Reference, "Minimum Outdoor Temperature is the outdoor temperature (in Celsius) below which hybrid ventilation is shut off when the ventilation control mode = 1 (Temperature). This lower temperature limit is intended to avoid overcooling a space, which could result in a heating load."
* Note that the "Maximum Outdoor Temperature" has been set to 30C. (there is no temperature schedule unlike the ZoneVentilation:DesignFlowRate and ZoneVentilation:WindandStackOpenArea objects)
* As per E+ I/O Reference, "Maximum Outdoor Temperature is the outdoor temperature (in Celsius) above which hybrid ventilation is shut off when the ventilation control mode = 1 (Temperature). This upper temperature limit is intended to avoid overheating a space, which could result in a cooling load."
* It considers the Fanger thermal comfort model (rather than the ASHRAE 55's adaptive thermal comfort model).
In other words, this measure sets min/max indoor air temperature as fixed values (on the basis of heating/cooling setpoint temperature) regardless of outdoor conditions.
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