The baseline building does not have night purge controls. If the software supports it and the proposed design has the features, the following keywords may be used to model night purge. Note that night purge is coupled with thermal mass in the building, which is specified by other building descriptors.
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Night Purge Availability Schedule |
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Applicability |
Systems that operate the fans for nighttime purge of heat gains |
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Definition |
A schedule which represents the availability of night purge controls. |
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Units |
Data structure: schedule, on/off |
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Input Restrictions |
As designed. The default is no night purge control. |
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Baseline Rules |
Not applicable |
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Night Purge Control |
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|---|---|
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Applicability |
Systems that operate the fans for nighttime purge of heat gains |
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Definition |
The control strategy for operation of nighttime purge. The control strategy may take account of indoor temperature, season, indoor temperature and other factors. |
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Units |
Data structure |
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Input Restrictions |
As designed |
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Baseline Rules |
Not applicable |
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Night Purge Fan Ratio |
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|---|---|
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Applicability |
Systems that operate the fans for nighttime purge of heat gains |
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Definition |
The ratio of fan speed for a night purge cycle. |
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Units |
Ratio |
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Input Restrictions |
As designed. The default is 100% (or fans available at full speed). |
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Baseline Rules |
Not applicable |