OpenBuildings™ Station Designer Help

ASHRAE 90.1 (2007): Lighting tab

Contains controls used to view prescriptive option compliance results for the Lighting portion of the ASHRAE 90.1 (2007) requirements.

Lighting requirements are specified in section 9 of the ASHRAE 90.1 (2007) standard, and include general and mandatory provisions, the Building Area Method and the Space-By-Space Method compliance path options.



Tip: You can open the Results Viewer utility to step through the calculations for displayed results by selecting the result value and clicking for more information (as prompted).
SettingDescription
Interior Lighting Displays prescriptive results for the interior lighting design of the project building. Reports for the power allowances (using two methods of compliance) and the inputted power amounts are listed. The total internal lighting power allowance is the sum of all individual power allowances. To comply, the total interior lighting power allowance must be less than the total input wattage.
Tip: Interior lighting data, including exemptions and allowances, is defined for each room in the building by using the settings provided for the Lighting Component . Lighting components are automatically created in rooms whenever a room is created. They can also be placed manually in any room.
Interior Lighting Power Allowance (Building Area Method) Displays prescriptive results for the interior lighting power allowance for the Building Area Method compliance path option. The Building Area Method is the is the simplest way of determining lighting power allowances, and is appropriate for an entire building or an entire occupancy in a multi-occupancy building.
  • Building Type – Lists the building type, which is used to determine the lighting power density used to calculate the interior lighting power allowance.
  • Lighting Power Density – Lists interior lighting power density for the building. LPD is the maximum lighting power per unit building area, and is used to calculate the interior lighting power allowance.
  • Building Area – Lists the total gross area of the building.
  • Lighting Power Allowance – Lists the interior lighting power allowance for the whole building. The interior lighting power allowance for the building is the sum of the lighting power allowances of all building areas. Trade-offs among building area types are permitted if that the total interior connected lighting power does not exceed the interior lighting power allowance.
Interior Lighting Power Allowance (Space-by-Space Method) Displays prescriptive results for the interior lighting power allowance for the Space-by-Space Method compliance path option. The Space-by-Space Method determines lighting power allowances for each space (room) in the building individually. This method provides greater flexibility with trade-offs and is applicable for all building types.
  • Building Type – Lists the building type for each row, which is used to determine the lighting power density used to calculate the interior lighting power allowance.
  • Common/Specific Space Type – Lists the unique space types (Common or Specific) that exist in the building. Common/Specific Space Types are taken from the standard specifically for the Space-by-Space Method.
  • Lighting Power Density – Displays the lighting power density for each space type as specified in the Common/Specific Space Types tables in the standard.
  • Space Area – Lists the total gross area of each space type exiting in the building.
  • Lighting Power Allowance – Lists the interior lighting power allowance for each space type existing in the building. The interior lighting power allowance for the whole building is the sum of the lighting power allowances of all space types. Trade-offs among building area types are permitted if that the total interior connected lighting power does not exceed the interior lighting power allowance.
Interior Connected Lighting Power Displays prescriptive results for the interior connected lighting power. The interior CLP is the sum of all the input power (wattages) the building luminaires are rated for. This value should be lower than the interior power allowance in order to comply with the standard.
  • Luminaire Description – Lists a description of each luminaire in the building.
  • Type – Lists the luminaire type for each type that exists in the building.
  • Number of Luminaires – Lists the total number of luminaires of each type that exist in the building.
  • Watts/Luminaires – Lists the total number of watts per luminaires of each type that exist in the building.
  • Total Watts – Lists the total input wattage of all the connected luminaires of each type that exist in the building. A grand total for the whole building is listed at the bottom of this column.
  • Pass/Fail – Displays an overall result of the interior connected lighting design compliance with the interior connected lighting requirements prescribed by the standard.
Additional Lighting Power Allowance Displays prescriptive results for additional interior power allowances permitted by the standard. Additional lighting power allowances include lighting used for decorative purposes, lighting installed to meet the requirements of video display terminals, and for display lighting in retail sales areas.
  • Space Name – Lists the name of the space (room) in which a qualifying luminaire is located.
  • Type – Lists the luminaire type exiting in each room that qualifies for an additional lighting power allowance.
  • Area – Lists the total area illuminated by the qualifying luminaires.
  • Unit Allowance – Lists the unit additional power allowance for each qualifying luminaire. The value displayed here is taken from a fixed list in the standard, and depends on the luminaire qualifying application.
  • Allowance – Lists the calculated additional lighting power allowance for each qualifying luminaire. The value displayed is the product of the area and the unit allowance.
  • Installed Power – Displays the lighting power actually installed in the room for the purposes of the qualifying lighting application. A grand total for the whole building is listed at the bottom of this column.
  • Pass/Fail – Displays an overall result of the additional interior power allowances compliance with the additional interior power allowances requirements prescribed by the standard.
Exterior Lighting Displays prescriptive results for the exterior lighting design of the project building. Reports for the power allowances (for tradable and non-tradable applications) and the inputted power amounts are listed. The total external lighting power allowance is the sum of all tradable and non-tradable power allowances plus an unrestricted 5% additional allowance. To comply, the total exterior lighting power allowance must be less than the total input wattage. Exterior lighting standard requirements are separate from interior lighting requirements and include trade-offs for compliance in special applications. Interior lighting and exterior lighting can not share trade-offs.
Tip: Exterior lighting data, including tradable and non-tradable allowances and exemptions, is defined for each of the building external luminaires by using the settings provided for the Building Lighting Component . The building lighting component is added manually by selecting a menu option on the building object in the OpenBuildings Station Designer Project Tree dialog box.
Exterior Lighting Power Allowance (Tradable Lighting Applications) Displays prescriptive results for the exterior power allowance for exterior lighting in tradable applications. Tradable applications include lighting for parking areas (uncovered), building grounds, entrances, exits, canopies and overhangs, and outdoor sales areas.
  • Application – Lists the tradable application.
  • Allowance – Lists the maximum power allowance for each exterior luminaire type. The allowances are calculated using the lighting power density (LPD) ratings for the luminaires.
  • Area or Length – Lists the amount of the illumination (area or length depending on the type) for each luminaire type.
  • Tradable Power Allowance – Lists the tradable power allowance for each luminaire type which is the product of the allowance and the area or length. The total tradable power allowance is the sum of all the tradable power allowances for each luminaire type, and is listed at the bottom of the this column.
Exterior Lighting Power Allowance (Non-Tradable Lighting Applications) Displays prescriptive results for the exterior power allowance for exterior lighting in non-tradable applications. Non-tradable applications include lighting for building facades, ATM´s, guarded entrances and gate houses, loading areas for emergency vehicles (police, fire, ambulances, etc.), restaurant drive up windows and parking near 24–hour retail entrances.
  • Application – Lists the non-tradable application.
  • Allowance per Unit – Lists the maximum power allowance for each exterior luminaire type. The allowances are calculated using the lighting power density (LPD) ratings for the luminaires.
  • Area, Length or Quantity – Lists the amount of the illumination (area, length or quantity of lights depending on the type) for each luminaire type.
  • Non-Tradable Power Allowance – Lists the non-tradable power allowance for each luminaire type which is the product of the allowance and the area or length. The total non-tradable power allowance is the sum of all the non-tradable power allowances for each luminaire type, and is listed at the bottom of the this column.
Additional Unrestricted Exterior Lighting Power Allowance: Displays the unrestricted 5% additional power allowance for the exterior lighting which is the sum of the tradable and non-tradable allowances multiplied by 5%.
Exterior Connected Lighting Power (Tradable Applications) Displays prescriptive results for the exterior connected lighting power in tradable applications. The exterior CLP is the sum of all the input power (wattages) the building luminaires in tradable applications are rated for. This value should be lower than the interior power allowance for tradable applications in order to comply with the standard.
  • Luminaire Description – Lists a description of each luminaire in tradable applications.
  • Number of Luminaires – Lists the total number of luminaires in each tradable lighting application.
  • Watts/Luminaires – Lists the total number of watts per luminaire in each tradable lighting application.
  • Total Watts – Lists the total input wattage of all the connected luminaires in tradable applications. A grand total for the whole building is listed at the bottom of this column.
Exterior Connected Lighting Power (Non-Tradable Applications) Displays prescriptive results for the exterior connected lighting power in non-tradable applications. The exterior CLP is the sum of all the input power (wattages) the building luminaires in non-tradable applications are rated for. This value should be lower than the interior power allowance for non-tradable applications in order to comply with the standard.
  • Non–Tradable Application – Lists the non-tradable application for each luminaire.
  • Luminaire Description – Lists a description of each luminaire in non-tradable applications.
  • Number of Luminaires – Lists the total number of luminaires in each non-tradable lighting application.
  • Watts/Luminaires – Lists the total number of watts per luminaire in each non-tradable lighting application.
  • Total Watts – Lists the total input wattage of all the connected luminaires in non-tradable applications. A grand total for the whole building is listed at the bottom of this column.
Exterior Lighting Compliance Test Displays prescriptive results for the Exterior Lighting Compliance Test in three tables. These results are a summary of the exterior lighting power allowances for the building. To comply, each of the conditions in the standard must be met for the exterior lighting systems. The tradable exterior lighting applications comply if the connected lighting power is no greater than the total allowance. All or a portion (or none) of the five percent additional allowance can be used to achieve compliance. Connected lighting power for each of the non-tradable applications must be no greater than their corresponding allowances. The additional allowance from the five percent pool can be applied to achieve compliance. The total of additional allowances used for both the tradable and non-tradable applications must be no greater than the total Additional Unrestricted Exterior Lighting Power Allowance.
  • - table 1
    • Tradable Power Allowance – Displays the total tradable power allowance (sum of all individual tradable power allowances).
    • Additional Unrestricted Lighting Allowance to be Applied – Displays the additional 5% of the total allowances (tradable and non-tradable).
    • Tradable Connected Lighting Power – Displays the total input wattage (CLP) for tradable applications.
    • Pass/Fail – Displays an overall result of the tradable power allowances compliance with the exterior tradable power allowances requirements of the exterior lighting compliance test prescribed by the standard.
  • - table 2
    • Non–Tradable Application – Lists each luminaire that is in a non-tradable application.
    • Non-Tradable Power Allowance – Displays the total non-tradable power allowance (sum of all individual non-tradable power allowances).
    • Additional Unrestricted Lighting Allowance to be Applied – Displays the additional 5% of each of the non–tradable application luminaire allowances.
    • Non-Tradable Connected Lighting Power – Displays the input wattage (CLP) for each non-tradable application.
    • Pass/Fail – Displays an overall result of the non-tradable power allowances compliance with the exterior non-tradable power allowances requirements of the exterior lighting compliance test prescribed by the standard.
  • - table 3
    • Total Additional Allowance Applied – Displays the total additional allowances for non-tradable applications.
    • Additional Unrestricted Lighting Power Allowance – Displays the additional 5% of the total allowances (tradable and non-tradable).
    • Pass/Fail – Displays an overall result of the total additional power allowances compliance with the exterior total additional power allowances requirements of the exterior lighting compliance test prescribed by the standard