Night Purge

90.1-2016 BM

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.

Night Purge Availability Schedule

Applicability

Systems that operate the fans for nighttime purge of heat gains

Definition

A schedule which represents the availability of night purge controls.

Units

Data structure: schedule, on/off

Input Restrictions

As designed. The default is no night purge control.

Baseline Rules

Not applicable

 

Night Purge Control

Applicability

Systems that operate the fans for nighttime purge of heat gains

Definition

The control strategy for operation of nighttime purge. The control strategy may take account of indoor temperature, season, indoor temperature and other factors.

Units

Data structure

Input Restrictions

As designed

Baseline Rules

Not applicable

 

Night Purge Fan Ratio

Applicability

Systems that operate the fans for nighttime purge of heat gains

Definition

The ratio of fan speed for a night purge cycle.

Units

Ratio

Input Restrictions

As designed. The default is 100% (or fans available at full speed).

Baseline Rules

Not applicable