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:peace: Do you know, that with watercooled PV panels happens the same than it does with watercooled led light ? PV panels can get very hot in summer (130°C). Each Kelvin you can bring down the panel temperature, it produces ~0,5% more electricity. more info i.e. here...

:spew:Pt = 0.5 * Vf * If You are really dyslexic: Because CREE on his site nowhere mentioned burple or kind leds - they talk about CREE leds. Nobody knows from where you suck " chinise burple " out of your sick brain. :fire::fire::fire::arrow: As an expert in watercooled led light - and...

That`s what I say. Pt = 0.75 * Vf * If !!! You are too stupid to buy condoms ! :wall:

@wietefras : " I only quoted information of CREE and OSRAM " Also, why can't you at least learn from the fact that you keep getting these basic things wrong? Why do I need to waste my time again on something so basic and so obvious? I have corrected you on at least a dozen major mistakes. It...

Trumpyfied people like to ignore heat :fire::o

:peace: Before using peltier plates I suggest you to build up a roof with PV panels to cool your trout tank in summer. Each square meter can produce 100 kwh / year - and your trout tank stay much cooler without direct sun.

https://ledlight.osram-os.com/wp-co...haracteristics-of-LEDs_v2_08-16-11_SCRIPT.pdf @wietefras If you don`t believe in CREE - maybe OSRAM helps you to shut down your bigmouth. >:(

@wietefras ?? Are you dyslexic ?? The dissapointment is on my side. - you never did a watercooled build ! I did many times - you never measured the heat of a led chip ! I did many times - you never read this link - as I told you 5 times...

:peace: hi mr. ttystikk - sorry to mention, that all the sticky flowers we are talking about here in rollitup - are a result of light-input, so light is not always transformed to heat. In our case - THC & Co. is chemicaly stored light energy. With PV panels you can charge your electric car and...

:peace: ...that you should read before and after.... Thermal Management of Cree XLamp® LEDs Heat generation LEDs generate visible light when current passes across the junction of the semiconductor chip. However, LEDs are not 100% efficient; much of the power running through an LED is output...

:peace: - My water temps. are 16°C - 37°C. My chip platines (Tj) i guess ~ 5°C higher. If you run your grow room at ~26-28°C - there are no problems with condensation or too much heat - I need very low quantities of fresh (cold) air and water. :bigjoint:

************************************************* :peace::fire: Is it not easier just to use an amount of water (eg. 10kg) in a closed circuit - and then measure time and rising temperature of water ? or simply use a heat meter (flow-heat-module)...

:peace: ...is a coolmac-system. :fire: to put your heat into a heatexchanger helps you really to save oil or gas and money. Aircooled led light is ~25% energy efficient - my coolmac-system in the moment ~85%. Soon I will show you ~95% and the lamp will not need any aluminium or metal...

In a coolmac - system Tj = ~Tc Vf rise significantly and give 10% better performance. Have a look here: http://www.cree.com/led-components/media/documents/XLampThermalManagement.pdf

Specially when someone lacks awareness,education, responsability and overview - politics could be helpfull to compense. You !!! - USA-citizens - don`t have money, because your sovereign debt will pass this year 20.000.000.000.000,- US$. One of the reasons is - not to put enough taxes on...

I measured a minimum of 70-80% heat of the input power 0.500 A ..................... i measured the heat of XT-E @ 500mA with 3,08 V for ten minutes 888.5 Led lm............. and i received 1,3W of heat power. That means around 80% heat power 574.7 lm/W................ from input. 3.09 Vf...

:peace::eyesmoke:Imagine the way of the heat - outside of your chip. Your heat meats your thermal grease - and even if it is a very good one - the heat conductivity compared to eg. copper is very low. OK. - you learned to keep it very thin and you put it only on very flat and plane surfaces...

:dunce::fire::dunce: what do you want to compare ? :idea:

Yes - copper is also much more expensive and heavy - as you can see and imagine in the pic I could seal the optimized chip platines even on a plastic tube - no need of any conductiv materials - this patented heattransfer happens as close as possible to the place where the heat is produced...

:peace: :fire:Not at all - with my watercooled * coolmac - system * i`m able to rewin 60-65% of the inverted electr. power in form of hot water with an 80L heatexchanger (EUR 160,-). I use it in the bathroom and kitchen. With ~ 330W lamp / ~15h a day - I was able to stop the use of oil or gas...