100W 32V Rectangular High Power Full-White LED with Metal Heat-Sink Rack
Power LED in White
Specifications
Variable (Power Dissipation) : 100W
Forward Current : 3000mA (7000 max. Peak)
Forward Voltage : 32~36V
Dominant Wavelength (tc) : 6000~7000K
Luminous Intensity :8000~8500lm
View Angle : 95~105 deg
Life Span over 100,000 hours for 10W - 100W LEDs, 50,000 hours for 1-5W LEDs
Operating Temperature : -20 ~ 80 degree
Storing Temperature : -30 ~ 100 degree
From the datasheet, the operation temperature range is from -20~+ 80deg, you should add some extra heat sinks indeed when you run it on full load, put the heat sink underneath the rack, in between the surface of the of the rack and your heatsink, also added some thermal paste which give the heat a better transfer.