I have a electronic repair shop where we work where lighting is helpful especially 6500k light. I have a 22ft high ceiling in the shop with about 6 fluorescent light fixtures with 2 very long bulbs i would say 6 ft in each fixture. Right now only 4 of them work.
Anyways i wanted to stop using them and switch to leds. I purchased 2 led strips 5m the latest being a 5050 300 led version which definitely looks very cool and provides a decent amount of light if close to it. I put a string about 8 ft in the air and have them tapes to it as well i have them going along the wall at about 8 ft high. I also purchased a 20 watt LED floodlight which again up close providesalot of light but i was planning on mounting them high to provide well a flood of light at our tech area.
Well with the fluorescents off there and just using the LEDs there is not enough light to keep them off. I was looking to find a way to keep them off, i was told LEDs do not spread well from a better distance.
Linear fluorescent is about the most efficient white light sources. Going LED won't cut your electricity bill with the presently available commercial products.
2 fixtures * 2x6' tubes should give you 17,800 lumens.
A 300*5050 LED strip about 3000 lumens or less depending on what is inside the LED case.
(You need 6-24 strips to match the light output of the fluorescent. (2 fixtures*2 tubes))
A 20W LED flood gives <1000 lumens.
(You need 18-20 floods to match the light output of the fluorescent. (2 fixtures * 2 tubes))
1 do not trust 5050 LEDs to last.
20*20W floods = 400W. (~40-50 LPW)
2 fixtures * 2*6. tubes = 224W. (~80 LPW)
5*Cree CR LE 40L HE (1x4) 38W 4000 lumens 105 LPW (40K) = 190W for 20,000 lumens.
4*Cree CR LE 40L HE (1x4) 38W 4000 lumens 105 LPW (40K) = 152W for 16,000 lumens.
You need SMK-LE-L - Surface Mount Kit with SMK-LE-EC - End Caps (2 pack)-Must be ordered separately and maybe SMK-LE-JP - Joiner Plate (for continuous row)
4000°K neutral is the highest colour temperature for the CR LE. No 6500°K cool white.
Go to Cree's website. Click on the where to buy button. The dealer can probably explain things better. Its a big initial investment though.
I would consider replacing the 6-8' tubes with 4x48 T8 or T5 fixtures, and call it a day. Shoplights in this size are cheap and efficient. The majority of LED fixtures in this category are either junk, or seriously over-priced, and most struggle to match the efficiency of tubes because it's more profitable to sell crappy LED fixtures than good ones.
Years ago well before LED lighting. I cleaned all the reflectors for fluorescent tubes in my office. There was quite a film of dirt on all the surfaces. Once cleaned we ended up removing a few tubes here & there as there was now more light than was really needed.
thanks for the tips, it seems the LEDs are not suitable for my particular application, perhaps if i were in a enclosed room it would work but for a shop it seems the suggestions you all mentioned would work better for me
i will have to save up a bit more before making the switch
thanks for the info and when i do the switch i will post back
why would you not trust the 5050 leds?
i got the 300 led strip for $20 on ebay from china