HPS Temperature
- Thread starter Relax62
- Start date
onefortheroad
Active Member
To make it simple different spectrums use energy different and produce light and exchange heat diff whiter brighter more heat orange less light less heat...in a nutshell
Relax62
Well-Known Member
Like I said I was under the impression MH run hotter so why is my HPS running hotter? MH are less efficient with the conversion of electricity into light and the left over is observed as heat. So could it just be that I have a cheap china made HPS bulb that is horribly less efficient than my china made MH bulb??
bigbudahluva
Active Member
A new bulb may cause more heat than old, mh in my experiance is like 20 percent hotter. Hows u grorite?
mr2shim
Well-Known Member
ACTUALLY, according to my IR thermometer the temperature of the glass cool tube with the MH 213F and the HPS is 170F. What makes the HPS "hotter" is that it emits more light energy. Meaning the hps is more efficient at converting power(watts) into usable energy(light). MH is less efficient thereby putting off more waste(heat). Nevertheless, the increased light energy will equate to more heat. It's complicated but simply put yea HPS will make your grow area warmer despite running cooler.
Think of it like a cloudy day that is 75 degrees feels cooler than a sunny day at 75 degrees.
Think of it like a cloudy day that is 75 degrees feels cooler than a sunny day at 75 degrees.
onefortheroad
Active Member
YES raidiant heat!! bravo..
AimAim
Well-Known Member
FWIW my HPS runs cooler than my HPS, both are new 600w bulbs. When I swithed to HPS a while back I had to turn my fan down to a crawl to keep temps up (pulls through a cool tube and exhausts outside room). It dropped about 7 degrees f in a 5X5X8 room in a basement where I need the bulbs for heat.
Not sure why I would be different but it is for sure generally cooler since the switch to hps
Not sure why I would be different but it is for sure generally cooler since the switch to hps
mr2shim
Well-Known Member
Have you used any sort of instruments to prove this or is it the hand test? The only reason a HPS would burn hotter than an MH if it has considerable mileage on it or it's a cheapo lamp.
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