Certain hps bulbs run cooler?
- Thread starter onewheeld
- Start date
SPLFreak808
Well-Known Member
The quality of the salt chamber greatly influences the temperature of the bulb, so yes temperature will differ from bulb to bulb. Shitty bulbs are likely to run hotter, you can tell the quality of a salt chamber by looking for color.
Kingrow1
Well-Known Member
So your suggesting a 600w from phillips makes your tent 5°c coolerE than a sunmaster 600w....?
Actually im saying until you understand convection conduction and radiation the subject of light and heat will always confuse
Kingrow1
Well-Known Member
Heat can be transferred from one place to another by three methods: conduction in solids, convection of fluids (liquids or gases), and radiation through anything that will allow radiation to pass.
Light and radiation do not really heqt the air but the surface they strike. So to read air temperature we want to place the thermometer away from the light and all indirect light or the meter is warmed above air temperature.
We simply run air through tents to keep air temps down lest they keep on heating in a sealed box. This dosent cool radiation heat, this either strikes your tent walls and heats that surface or the leaf where highly efficient transpiration cools to perfection.
I just dont see how a different hps affects air temperatures by much and running good cfm extraction will equalise most lights.
At first a 600watt light seems hot but in a 4x4 tent it is not really andother heaters would be considered hotter for the same 600watts. So if i place a 600watt light in my living room it does a shit job of heating the room whereas a 600watt foot heater will actually heat the air to very toasty.
Light heat all complex interplays but easy to understand as a principle over on Wiki. So if you think a salt mixture will knock your air temps doen by a few degrees your being mis-sold to a large extent as temps will remain largely the same.
Way too much light hype thesedays
TacoMac
Well-Known Member
No.
The variance in HPS bulbs of the same wattage is so minimal that it wouldn't make a difference in even a pretty small space. Their difference is probably more down to ventilation variances and ambient temperature than anything else.
Heat can be transferred from one place to another by three methods: conduction in solids, convection of fluids (liquids or gases), and radiation through anything that will allow radiation to pass.
Light and radiation do not really heqt the air but the surface they strike. So to read air temperature we want to place the thermometer away from the light and all indirect light or the meter is warmed above air temperature.
We simply run air through tents to keep air temps down lest they keep on heating in a sealed box. This dosent cool radiation heat, this either strikes your tent walls and heats that surface or the leaf where highly efficient transpiration cools to perfection.
I just dont see how a different hps affects air temperatures by much and running good cfm extraction will equalise most lights.
At first a 600watt light seems hot but in a 4x4 tent it is not really andother heaters would be considered hotter for the same 600watts. So if i place a 600watt light in my living room it does a shit job of heating the room whereas a 600watt foot heater will actually heat the air to very toasty.
Light heat all complex interplays but easy to understand as a principle over on Wiki. So if you think a salt mixture will knock your air temps doen by a few degrees your being mis-sold to a large extent as temps will remain largely the same.
Way too much light hype thesedays
Cheers for that,definitely helps put things into perspective and makes perfect sense.breaking it down all adds up and like you say comparing it to the two different heat sources of the same power output with two completely different outcomes makes it easy to see even for a dummy
Iv got a lot to learn,I’ll be on here regularly,it’s early days for me with all of this I understand all the basics but definitely need to do more educated reading as opposed to some of the threads speculating without any sort of genuine theory behind it to back it up
Cheers for the reply kingrow
This is what I originally thought,I highly doubted it could be true but as I have no experience with this sort of thing I wanted to find out from people who do
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TacoMac
Well-Known Member
Don't read too much into all the bulb hype. I took the Pepsi Challenge with a 60 dollar Hortilux 600 watt HPS bulb against a 30 dollar Yield Labs HPS bulb and there was no difference at all.
TacoMac
Well-Known Member
Ummmm...yeah.
I have a 600 watt HPS that cost half what you spent. There is no glass in the fixture. Glass is optional. The only reason it's there in some fixtures is to help control heat. The UV rays you lose by a simple sheet of tempered glass are so small as to be irrelevant.
Stop shit posting.
The uvb rays a compleated blocked by the glass, I have a 600 watt air cooled hood with removable glass as well it pails in comparison bouth in yield and trichome production with less energy useage and heat, spend more now....save more on the electric bill and grow cheaper!
Keep using that 600 and paying.
Do your research , before opening your big
Keep using that 600 and paying.
Do your research , before opening your big
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TacoMac
Well-Known Member
First off, no they aren't unless is UV glass, which regular tempered glass is not.
Secondly, UVB rays can actually damage the DNA of plants, so it's not any great loss if they are blocked. In fact, it's actually a GOOD thing.
Thirdly, nearly all UVB rays from the sun are completely blocked by the ozone layer. It was UVB getting through the weakening ozone layer that prompted the quick ban of most R12 refrigerants and other chemicals that contributed to its destruction starting back in the 1980's.
TacoMac
Well-Known Member
V256.420
Well-Known Member
I agree. You can't argue with someone who states facts.
Just curious.........did you vote for Trump Bidrick?
