ttystikk
Well-Known Member
And yet the modules I've already converted to run warm still radiate heat- and the plants respond differently as well. They look a bit more like they were grown under HID.HID follows this basic rule. If you pump 1000 watts into an HID bulb 1000 watts of energy is coming out. In SE HPS case around 32-33% comes out as visible light or PAR(Photosynthetic Active Radiation) light. The rest comes out above 800 nm which isn't depicted in the spectrum graph on the box. This 800+nm "light" is actually infrared heat(same as comes out of most small electric radiant heaters). Led on the other hand is different. If you put 50 watts into a COB you get 25 watts of usable light and 25 watts of heat (just an example). The difference is the type of heat. The LED's waste heat is expelled off the back of the led into the heat sink where it is dissipated into the air. It doesn't have the heat soaking effect that HID has. So basically it's Radiant heat vs Compounding Conductive Heat.