Grasshopper

algorithmic modeling for Rhino

00 | Honeybee
01 | Daylight | Material
02 | Daylight | Light Source
03 | Daylight | Recipes
04 | Daylight | Daylight
05 | Energy | Building Program
06 | Energy | Material | Construction
07 | Energy | Schedule
08 | Energy | Set Zone Properties
09 | Energy | HVACSystems
10 | Energy | Energy
11 | THERM
12 | Developers
13 | WIP

Set EnergyPlus Zone Thresholds

Component Index > Honeybee > 08 | Energy | Set Zone Properties > Set EnergyPlus Zone Thresholds

Use this component to set Zone Thresholds like daylighting thresholds and setpoints.

Inputs

NameIDDescriptionType
_HBZones_HBZonesHBZones for which zone thresholds will be set.Goo
coolingSetPt_coolingSetPt_A number or list of numbers that represent the thermostat cooling setpoint in degrees Celcius. The cooling setpoint is effectively the indoor temperature above which the cooling system is turned on. This can be either a single number to be applied to all connected zones or a list of numbers for each different zone.Goo
coolingSetback_coolingSetback_A number or list of numbers that represent the thermostat cooling setback in degrees Celcius. The cooling setback is the indoor temperature that the space will be kept at when it is unoccipied. Note that not all building types have a setback. This can be either a single number to be applied to all connected zones or a list of numbers for each different zone.Goo
heatingSetPt_heatingSetPt_A number or list of numbers that represent the thermostat heating setpoint in degrees Celcius. The heating setpoint is effectively the indoor temperature below which the heating system is turned on. This can be either a single number to be applied to all connected zones or a list of numbers for each different zone.Goo
heatingSetback_heatingSetback_A number or list of numbers that represent the thermostat heating setback in degrees Celcius. The heating setback is the indoor temperature that the space will be kept at when it is unoccipied. Note that not all building types have a setback. This can be either a single number to be applied to all connected zones or a list of numbers for each different zone.Goo
maxHumidity_maxHumidity_A number or list of numbers that represent the maximum relative humidity allowed by a humidistat in %. The HVAC will dehumidify the zone air if the relative humidity goes above this threshold. The default is set to 'no limit' or no humidistat. This can be either a single number to be applied to all connected zones or a list of numbers for each different zone.Goo
minHumidity_minHumidity_A number or list of numbers that represent the minimum relative humidity allowed by a humidistat in %. The HVAC will humidify the zone air if the relative humidity goes below this threshold. The default is set to 'no limit' or no humidistat. This can be either a single number to be applied to all connected zones or a list of numbers for each different zone.Goo
outdoorAirReq_outdoorAirReq_An integer or text string value that changes the outdoor air requirement of the zone (the default is set to "0 - Sum"). Choose from the following options: 0 - Sum - The outdoor air coming through the mechnical system will be the sum of the specified flow/m2 of zone floor area and the flow/person. This is the default and is the usual recommendation of ASHRAE. 1 - Maximum - The outdoor air coming through the mechnical system will be either the specified flow/m2 of zone floor area or the flow/person (depending on which is larger at a given hour). Choosing this option effectively implies that there is a demand-controlled ventilation system set up in the zone. 2 - None - No outdoor air will come through the mechanical system and the heating/cooling will be applied only through re-circulation of indoor air. Be careful as this option might not bring enough fresh air to occupants if the zone's infiltration is very low.Goo
daylightIllumSetPt_daylightIllumSetPt_A number of list of numbers that represent the illuminance threshold in lux beyond which electric lights will be dimmed if there is sufficent daylight. The default has no dimming for daylight, meaning that lights will be on whenever the schedule states that they are on (regardless of daylight). If you specify a daylightCntrlFract_ below, this component will automatically assume a setpoint of 300 lux. Some other common setpoints are: 50 lux - Corridors and hallways 150 lux - Spaces where people are working on computer screens, which already provide their own light. 300 lux - Spaces where people are reading and writing on paper, such as residences and offices. 500 lux - Commerical or retail spaces where perception of particular objects is important. 1000 lux - Reserved only for spaces where lighting is critical for human safety like workshops with power tools or operating rooms in hospitals.Goo
daylightCntrlPt_daylightCntrlPt_A point that represents the location of a daylight senor within the zone. If an illumance setpoint is specified above, the default is set to place the sensor in the center of the zone at 0.8 meters above the ground.Goo
daylightCntrlFract_daylightCntrlFract_A number between 0 and 1 that represents the fraction of the zone lights that will be dimmed when the illimance at the daylightCntrlPt_ is at the specified daylightIllumSetPt_. The default is set to 1 when there is an illuminace threshold to dim all of the lights of the zone. If you have a deep zone, you probably want to decrease this number so that you don't dim the lights in the back of the space to be too dark.Goo

Outputs

NameIDDescriptionType
outreadMe!The execution information, as output and error streamsString
HBZonesHBZonesHBZones with thresolds set.Goo

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