Simon Malls
Replacing 250W Metal Halide with DL2500 Intelligent Light Sensing LED fixtures.
Energy Savings reported by Simon: 80%
Life expectancy > 100,000 hours
Replaced 250W metal halide with DL2500 Intelligent LED fixtures in common areas in the malls with skylights.
These fixtures are auto light level sensing, adjusting their brightness depending upon ambient light level from 0% on a sunny day to 100% at night.
Expected L70 (time retaining 70% of their original output) with auto level control >100,000 hours.
Maintenance schedule: metal halide: 2500 hours lamp life, requiring lift and 1-2 men servicing fixtures @$25/hr. for 20 replacement cycles = $500 per light + $50 per lamp x 20 and one ballast/ignitor replacement every 10 lamps @ $35 = $1,035 over 50,000 hours PER LAMP
HVAC costs: from 250W per fixture plus ballast losses (~300W or 1023 BTU) to 100W per fixture (~110W or 375 BTU); ~65% reduction in HVAC requirement.
Energy savings reported by Simon: 80%
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