should be the same.... a 400 watter is 400 watts. a 400 watt, incandescent(aka a regular bulb) or four 100w bulbs, will produce the same amount of heat, just alot less light. it doesnt even need to produce light at all to produce the same heat, for example, if you have a 400 watt space heater running it will produce the exact amount of heat as a 400 watt bulb.I have a 400w MH/HPS light and I wondered if one of both bulbs produced more heat than the other one?
That's not correct. A bulb's efficiency is based on how much of it's energy usage is converted into heat energy.should be the same.... a 400 watter is 400 watts. a 400 watt, incandescent(aka a regular bulb) or four 100w bulbs, will produce the same amount of heat, just alot less light. it doesnt even need to produce light at all to produce the same heat, for example, if you have a 400 watt space heater running it will produce the exact amount of heat as a 400 watt bulb.
so no, there should be no difference in heat...
right, theres some truth to that. i was going to extrapolate but i didnt want to confuse the kid. the difference in efficiency between the mh and hps is not that large and thus i didnt get into that. have you heard of "kiss"? it stands for Keep It Simple Stupid.That's not correct. A bulb's efficiency is based on how much of it's energy usage is converted into heat energy.
The more heat produced, the less effecient. For instance, a 400 watt HPS light will produce less heat (and more light) than a 400 watt halogen bulb.
The effeciency depends on how much of the bulb's allotted 400 watts is converted into heat energy, and how much is converted into light.
I understand your need to "KISS," however you were making some pretty wild claims there. I beleive you stated a 400 watt space heater will give off the same amount of heat as a 400 watt bulb. That's completely out of the realm of comprehension.right, theres some truth to that. i was going to extrapolate but i didnt want to confuse the kid. the difference in efficiency between the mh and hps is not that large and thus i didnt get into that. have you heard of "kiss"? it stands for Keep It Simple Stupid.
"The more heat produced, the less effecient. For instance, a 400 watt HPS light will produce less heat (and more light) than a 400 watt halogen bulb."
let me ask you though, what happens to that light that isnt apart of the "heat"? does it not get absorbed by plants, walls, floors, etc? what happens then? it turns to heat and energy. just because it not IR energy doesnt mean that it doesnt eventually turn into IR/heat.
what do you have to say about that pussy?
I understand your need to "KISS," however you were making some pretty wild claims there. I beleive you stated a 400 watt space heater will give off the same amount of heat as a 400 watt bulb. That's completely out of the realm of comprehension.
So, forgive me for politely correcting you.
You are correct however, no energy transfer is 100% effecient, and thus loses energy in the form of heat (also known as entropy). Photosynthesis is not excluded and does lose energy in the form of heat. However that is entirely out of the scope of the OP's question. He asked how much heat was directly given off by the bulb.
By the way, your use of the word "extrapolate" was incorrect. I believe the word you were thinking of was "interpolate." (Ok, I'll admit, I was being a douche there )
I have a 400w MH/HPS light and I wondered if one of both bulbs produced more heat than the other one?
he did? if my eyes serve me correct, it says "i wondered if one of both bulbs produced more heat than the othe one?"However that is entirely out of the scope of the OP's question. He asked how much heat was directly given off by the bulb.
yes, just get a HPS system and buy a MH conversion bulb. you can grow pot with either one though. a mh is better for vegging, a hps is better for flowering. hps produced more lumens/watt, i dont have enough hands on experience to tell a difference myself.so which one would you guys recommend more. an HPS or an MH? i heard using an MH for vegging and an HPS for flowering is good. this true?
as long as the temp inside the room is the same when you start your system, also ambient outside temps would be a factor to watch out for too. if there was a big(10degrees or so) outside temp fluctuation it might/would effect your inside temp and throw off your reading.I real don't want to say, but here is a simple test, stick in the HPS Bulb for a few hours and messure the heat in the room and then do the same with MH, it's not terribly sicentific but should give you a ruth idea.
Please Excuse my spelling. Dislexic.
let us know how you make out.Im going to visit my rooms later this morning,i have both MH & HPS systems running so i will take a digital thermometer with me & get a reading at the bulb & one at the ballast of each system.
Yup! You are right. 400w is 400w.
radiant energies produce heat. anyone have a definite answer? 400w is 400w until someone disproves me.
ya im pretty sure. but i usually never say im definite about things, that way if im wrong i wont look like such an ass. but usually im right, otherwise i try and keep my mouth shut and learn. read my posts if you want.I wouldn't have thought that, just going by a floro light.
You could be right on that Will need to check that.
HPS 400 watts,reading taken with thermometer pointed at the filiment = 117 degrees.Im going to visit my rooms later this morning,i have both MH & HPS systems running so i will take a digital thermometer with me & get a reading at the bulb & one at the ballast of each system.