Operating hours per week was obtained by weighting the
operating hours per week of each sub-activity with the proportion
of areas of each sub-activity. Indoor temperature set
points for each sub-activity of a facility were treated as separate
variables—temperature set points of IT, for ITES, data centre, lab
spaces and other areas. The categorical variables representing compressor
type and chiller type were converted intodummyvariables.
All other categorical variables (awareness, occupancy/illuminance
based lighting, temperature based control systems for HVAC, VFD)
were treated as continuous variables. Additional operation and
maintenance indices were also created from a combination of
the awareness, energy audit, audit recommendation and Average
Power Factor variables. Similarly, an operation index was also created
from a combination of sub-activity areas, operation hours and
temperature set points.