
source:SBTool
Explanation
of the abbreviation "maph" in the table above:
"Maph"
is million annual person hours of occupancy and kaph
is thousands. It is a way of normalizing results
for occupant numbers and schedule.
A
good way to clarify the idea is to talk about two
identical buildings. One has 100 consultants working
40 hours per week, the other has a telephone call
centre with 200 people x 3 shifts, 24/7. The first
case will have 208,000 aph, the second will have
1,752,000 aph. These can be expressed as 0.2 maph
and 1.75 maph respectively which is a ratio of 8.76:1.
Of course, the second case will also involve a much
higher equipment density. All these factors result
in a much larger energy, emissions and water footprint
for the second one.
So,
if building 1 consumes 200 kwh per m2 per year and
building 2 consumes 600 kwh per m2 per year, building
2 is still a much better performer when normalized
for occupancy.
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