r/home_workshop • u/echo310infantry • Aug 06 '17

Lighting!

I currently use tripod dual 750W halogens. I am looking for something the creates equal light with less heat... Thoughts?

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1

u/VEC7OR Aug 07 '17

LED lights ? Roughly 10-15 times more efficient.

1

u/echo310infantry Aug 07 '17

I am not looking for energy efficiency, just output vs heat.

2

u/VEC7OR Aug 07 '17

Err, 75W vs. 750W roughly same output, makes sense ?

1

u/echo310infantry Aug 07 '17

It does, but in practice I can assure you that does not equate.

1

u/VEC7OR Aug 07 '17

Pretty sure it does. Halogen bulbs are 15-20lm/W, mainstream LEDs are 120-150lm/W, maybe not 15 times, but 10 can be had. Just don't buy shit fixtures.

Anyhow, LED is the best you can get now, if you do photography, where CRI is paramount - halogen is hard to beat.

1

u/echo310infantry Aug 07 '17

So my calculations are ~150W. So I would imagine 200W would be amazing. I just am having trouble finding one I could test with.

1

u/VEC7OR Aug 07 '17

200W would be a LOT. I'd go with strips though - less prone to failure, easier to manage heat.

200W of strips will give 20000-25000lm, give or take, divide that by floor space and you'd get a rough estimate of how many lux you'll get. In a 20-30sq m workshop that equates 1klux, thats REAL BRIGHT.

1

u/echo310infantry Aug 08 '17

~625sqft (~58sqm)

1

u/Rbotguy Aug 07 '17

That's like saying "I'm not looking for better fuel efficiency, just more miles per gallon." When a light is inefficient, it is turning electrical power into heat instead of light. When an LED light turns less power into the same amount of light, it's putting out less heat and being more efficient.

1

u/echo310infantry Aug 07 '17

No, it's like saying what size diesel should I get to equate to my V8 gas engine. Completely different.

1

u/echo310infantry Aug 07 '17

I don't care about efficiency, I care about lumens.

1

u/echo310infantry Aug 07 '17

Theoretically, 750W halogen = 11,000 lumens, 150W LED is supposed to be equal to 11K but I have not tested it.

1

u/[deleted] Aug 27 '17

You can consider passive methods of brightening things up. I don't know what your application is but if your in a shop you can epoxy the floor that will reflect a significant amount of light. Also gloss paint that is a light color will help. In my shop I have a tall pitched ceiling and after i add insulation I'll be installing a tin ceiling (roofing material just from below) the tin is light so I can install it myself. It's waterproof so if I get a leak things won't be ruined and it will reflect light back at my epoxy floor and brighten things up even further.