cfl touching

ECP

ECP

Well-Known Member
They get hotter and burn out a little quicker. Not really a big deal, as they last forever anyway. Unless your talking massive 400watt cfls... that may be different.
 
electropyro

electropyro

Active Member
ECP said:
They get hotter and burn out a little quicker. Not really a big deal, as they last forever anyway. Unless your talking massive 400watt cfls... that may be different.
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nope theirs just small 26watters. so if their touching they wont pop or crack? just a bit worried about the glass falling on my girls
 
ECP

ECP

Well-Known Member
No, 26watt lights shouldn't crack. If your worried, keep a fan on the lights, it's healthy airflow for the plant anyway.
 
electropyro

electropyro

Active Member
ECP said:
No, 26watt lights shouldn't crack. If your worried, keep a fan on the lights, it's healthy airflow for the plant anyway.
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Oh i am. am making a cfl light fixture out of a box its 14inLx8inWx5inH. i am putting some panda film in it and setting up my cfls in their.
 
electropyro

electropyro

Active Member
I will take some pics tonight and post em in the morning. Kinda of a ghetto light fixture but it works and temps stay cool and cfl are cool to the touch.
 
electropyro

electropyro

Active Member
these are some of the things i used to make it happen.

1. long chain.
2. Box
3. 2x 120mm fans
4. 4 6500k cfl 20watt
5. 1 6500k cfl 75watt
6. 1 2700k cfl 40watt
7. Reflective mylar.
8. Super glue
9. tape.
 

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TheLog

TheLog

Well-Known Member
I know it's tempting but don't have your fan cooling CFLs, they burn a lot brighter when hot. Just move the air out more
 
corners

corners

Well-Known Member
Please be very carful using a cardboard box because though low watt cfls MIGHT not set your box on fire an electrical fire can. You would be suprised at how many other safer materials their are too use. Interesting though.
 
TheLog

TheLog

Well-Known Member
"Effect of temperature
The light output and performance of fluorescent lamps is critically affected by the temperature of the bulb wall and its effect on the partial pressure of mercury vapor within the lamp.[4] Each lamp contains a small amount of mercury, which must vaporize to support the lamp current and generate light. At low temperatures the mercury is in the form of dispersed liquid droplets. As the lamp warms, more of the mercury is in vapor form. At higher temperatures, self-absorption in the vapor reduces the yield of UV and visible light. Since mercury condenses at the coolest spot in the lamp, careful design is required to maintain that spot at the optimum temperature, around 40 °C."

I read somewhere else that was specific to growing things that cooling the actual light could decrease output, can't seem to remember where tho...
I'll pop it on this thread when (if) i can find it again
 
electropyro

electropyro

Active Member
corners said:
Please be very carful using a cardboard box because though low watt cfls MIGHT not set your box on fire an electrical fire can. You would be suprised at how many other safer materials their are too use. Interesting though.
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They are not wired through cable leads do. They are connected to surge protector outlets. Does that make a difference whether or not it may cause a fire?
 
electropyro

electropyro

Active Member
TheLog said:
"Effect of temperature
The light output and performance of fluorescent lamps is critically affected by the temperature of the bulb wall and its effect on the partial pressure of mercury vapor within the lamp.[4] Each lamp contains a small amount of mercury, which must vaporize to support the lamp current and generate light. At low temperatures the mercury is in the form of dispersed liquid droplets. As the lamp warms, more of the mercury is in vapor form. At higher temperatures, self-absorption in the vapor reduces the yield of UV and visible light. Since mercury condenses at the coolest spot in the lamp, careful design is required to maintain that spot at the optimum temperature, around 40 °C."

I read somewhere else that was specific to growing things that cooling the actual light could decrease output, can't seem to remember where tho...
I'll pop it on this thread when (if) i can find it again
Click to expand...
Thanks for the input much appreciated. I will try creating some type of extended compartment for the fans just to keep the temps normal without them burning my plants.
 
straitkilla911

straitkilla911

Active Member
TheLog said:
"Effect of temperature
The light output and performance of fluorescent lamps is critically affected by the temperature of the bulb wall and its effect on the partial pressure of mercury vapor within the lamp.[4] Each lamp contains a small amount of mercury, which must vaporize to support the lamp current and generate light. At low temperatures the mercury is in the form of dispersed liquid droplets. As the lamp warms, more of the mercury is in vapor form. At higher temperatures, self-absorpton in the vapor reduces the yield of UV and visible light. Since mercury condenses at the coolest spot in the lamp, careful designis requred to maintain that spot at the optmum temperature, around 40 °C."

I read somewhere else that was specific to growing things that cooling the actual light could decrease output, can't seem to remember where tho...
I'll pop it on this thread when (if) i can find it again
Click to expand...
Thanks. exactly what i was looking for.(I hate using the iphone browser)
 
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