Display Lighting on BRUKL

Modified on Thu, 17 Oct at 3:39 PM

Why does the building fail on Criterion 2, Walls or Floors, when all the external constructions are correctly insulated?

Part LA 2021 sets out the requirements for Display Lighting in New Buildings:

i. have an average light source efficacy of 80 light source lumens per circuit watt

Simply set the luminous efficacy for the display lighting system

ii. have a rated power usage no greater than 0.3W/m² in each space

SBEM does not permit the input of display lighting power* so this cannot be demonstrated in SBEM.

iii. the LENI method

There is a tick box on the Lighting tab at building level, however, you will still need to input the correct lighting data to ensure the BER is appropriate. A separate LENI calculation will need to be provided.

Only ONE route to Compliance is required and only i can be demonstrated in SBEM

Note that any SBEM Compliance calculation with SBEM v6.1 will display options i and ii. Although SBEM does calculate the W/m² this is based on the Display W/m2 set for the Activity in the NCM Activity database so the status of this value (red/black) can safely be ignored.

* Display lighting power is only available in the EnergyPlus interface.