Retrofit

Retrofitting Strategy	Adoption of task lighting to lower the background lighting
	This can reduce the energy consumption of the lighting system because of a lower lux level overall.
	Consideration
	The system needs to be carefully designed so as not to jeopardise IEQ for the purpose of the space.
	Estimated Saving
	[å(kW_LGT_i,PRENLGT_i,PRELF_i,PRE) – å(kW_LGT_i,POSTNLGT_i,POSTLF_i,POST) + å(kW_TL_iNTL_iLF_i,TL)]OPHR_OT,yr Where i is the effective zone of building OPHR_OT,yr = hr_OT/dayday_OT/wk52 is the yearly overtime operation LF_i = 1 for ON/OFF control under normal operating time of premises LF_i = (1 – 0.330.33) = 0.9 for 33% of power reduction (dim-down to 50% lux level) at 33% of time as an example Please click HERE to view the list of terminology.