How can this six COB fixture match a 1000 watt HPS? The company says so

Yodaweed

Yodaweed

Well-Known Member
MMJ Dreaming 99 said:
1.97 umols. 1127 umols.
598 watts.
$799
http://www.pacificlightconcepts.com/product/plc-6/

How can I match this with 6 Citizens?
I may be trying to hack their light but they are out of stock.
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In my opinion no and here's why

1000w hps - Coverage area = 5x5 , about 1900 umols

PLC - 6 - Coverage Area = 4x4 ,about 1130 umols

So there's about a 9 square foot coverage difference and a 770 umol difference both favoring the hps, and that's not even factoring in that the PLC6 costs more than twice more than the HPS. Also that's using a single ended hps, a double ended hps pushes over 2100 umols.
 
lukio

lukio

Well-Known Member
Yodaweed said:
In my opinion no and here's why

1000w hps - Coverage area = 5x5 , about 1900 umols

PLC - 6 - Coverage Area = 4x4 ,about 1130 umols

So there's about a 9 square foot coverage difference and a 770 umol difference both favoring the hps, and that's not even factoring in that the PLC6 costs more than twice more than the HPS. Also that's using a single ended hps, a double ended hps pushes over 2100 umols.
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At what distance?
 
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Stephenj37826

Stephenj37826

Well-Known Member
Yodaweed said:
In my opinion no and here's why

1000w hps - Coverage area = 5x5 , about 1900 umols

PLC - 6 - Coverage Area = 4x4 ,about 1130 umols

So there's about a 9 square foot coverage difference and a 770 umol difference both favoring the hps, and that's not even factoring in that the PLC6 costs more than twice more than the HPS. Also that's using a single ended hps, a double ended hps pushes over 2100 umols.
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Don't listen to Yodaweed lol. A DE is 2100 umol at the bulb. DE fixtures are usually in the 1700-1850 umol range.
 
CobKits

CobKits

Well-Known Member
just a heads up yoda the 2100 PPF measurement quoted for HPS bare bulbs is gross light output in a sphere and is 100% removed from the growershouse PPFD spot measurement, they are not equatable in any way. That test is useful for comparing relative intensity of different HPS bulbs and thats all
 
Yodaweed

Yodaweed

Well-Known Member
CobKits said:
just a heads up yoda the 2100 PPF measurement quoted for HPS bare bulbs is gross light output in a sphere and is 100% removed from the growershouse PPFD spot measurement, they are not equatable in any way. That test is useful for comparing relative intensity of different HPS bulbs and thats all
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That's the same thing this lighting company is measuring, just read their website here's a direct quote.

Specifications
Photon Efficacy: 1.97µmols/j

Total Output: 1127µmols/s

Recommended Unit Spacing: 48” on center

Spectrum:

  • Full Cycle – A broad band full cycle spectrum designed to maximize photosynthesis and yields. It is a red range dominate spectrum to enhance flower size and yield, while still providing elevated blue output to simulate general growth and increase quality.


SOURCE: http://www.pacificlightconcepts.com/product/plc-6/


So , gotta compare apples to apples.
 
apollo4201982

apollo4201982

Well-Known Member
I built a 8 cob 400 true watt setup and found just threw growing known plants under it that it was pretty close to my 600watt hps in terms of yeild. But as of now they are not used due to not being able to vent the heat the ballasts put out.

They grew very nice plants, just need to rethink the design. my cob lights will be rebuilt, and repurposed.
 
Stephenj37826

Stephenj37826

Well-Known Member
Yodaweed

Yodaweed

Well-Known Member
Stephenj37826 said:
Just for you Yoda sweetie. Gotta rib you yah know.

http://revolutionmicro.com/downloads/

Competition DE is a Gavita btw
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So what are you saying? 2100 umols total output for the DE light and 1130 umols total output from the COB fixture? Because i read your source and it says the ushio bulb outputs 2100 umols and this light has it listed outputting 1130 umols total output.

2100 > 1130 is that right or no?

Here's a direct quote off the article you posted

Lamp wattage 1000 W (+/- 3%)
Lamp current 4,8 A
Lampe voltage 230 V
Ignition voltage 3,2 kV (peak to earth)
PAR 2100 ȝmol/s
Average lifetime 10000 h

http://revolutionmicro.com/wp-content/uploads/2017/02/hiluxgro-proplus.pdf


And here's a direct quote off PLC website

Specifications
Photon Efficacy: 1.97µmols/j

Total Output: 1127µmols/s


http://www.pacificlightconcepts.com/product/plc-6/
 
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Yodaweed

Yodaweed

Well-Known Member
CobKits said:
yes thats same units of gross output. the hortilux measurement you quoted is something entirely different

SE HPS is 1100-1300 umol/s BTW

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0099010
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Directly quoted off your article.

"The five-year electric plus fixture cost per mole of photons is thus 2.3 times higher for LED fixtures, due to high capital costs."

You article also states nothing about "1100-1300 umol/s" for SE lights.


This is what it shows for umol/s.

http://journals.plos.org/plosone/article/figure/image?size=medium&id=info:doi/10.1371/journal.pone.0099010.t002



You might want to read your own sources before posting the wrong information then trying to use them to backup your argument.
 
Rahz

Rahz

Well-Known Member
That article was from 2014. I built a DIY lamp around that time I could buy for less retail today with better efficiency. It also states 1.02 umol/j for mogul bulbs = 1020 PPF. It can't replace a 1000w DE but it's possible to do that with 750 output watts these days. Four of my 200w (from the wall) units provides 2000 PPF, 725 output watts.
 
CobKits

CobKits

Well-Known Member
Yodaweed said:
So what are you saying? 2100 umols total output for the DE light and 1130 umols total output from the COB fixture? Because i read your source and it says the ushio bulb outputs 2100 umols and this light has it listed outputting 1130 umols total output.

2100 > 1130 is that right or no?
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no 2100 = bare bulb efficiency of DE (great for bulb comparison but tells you nothing abou tlight getting to the plants)

system efficiency of DE would be closer to 1700, not 2100

1130 = system efficiency of PLC which is close to system efficiency of SE

nobody but you is trying to compare system efficiency of PLC fixture to a double ended bare bulb number. nowhere on their page do they mention DE
Yodaweed said:
You article also states nothing about "1100-1300 umol/s" for SE lights.
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sure it does, youre looking in the wrong place. the chart you list doesnt even have an SE fixture in it

upload_2017-7-3_18-56-34.png



Yodaweed said:
You might want to read your own sources before posting the wrong information then trying to use them to backup your argument.
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well if you wonder why i have you on ignore, its not just because your wrong, but also rude as well.

Yodaweed said:
"The five-year electric plus fixture cost per mole of photons is thus 2.3 times higher for LED fixtures, due to high capital costs."
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yes that study is from 2014 fixtures which were a lot more inefficient than modern LEDs and a lot more expensive. cobs didnt even exist in commercial fixtures yet. of note is that the best LEDs were matching HPS efficiency 3 years ago, of course they are far above that now
 
Stephenj37826

Stephenj37826

Well-Known Member
Yodaweed said:
So what are you saying? 2100 umols total output for the DE light and 1130 umols total output from the COB fixture? Because i read your source and it says the ushio bulb outputs 2100 umols and this light has it listed outputting 1130 umols total output.

2100 > 1130 is that right or no?

Here's a direct quote off the article you posted

Lamp wattage 1000 W (+/- 3%)
Lamp current 4,8 A
Lampe voltage 230 V
Ignition voltage 3,2 kV (peak to earth)
PAR 2100 ȝmol/s
Average lifetime 10000 h

http://revolutionmicro.com/wp-content/uploads/2017/02/hiluxgro-proplus.pdf


And here's a direct quote off PLC website

Specifications
Photon Efficacy: 1.97µmols/j

Total Output: 1127µmols/s


http://www.pacificlightconcepts.com/product/plc-6/
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No you didn't read the reports I posted on DE fixtures in Sphere. Check again. I'm not saying anything other than a DE BULB outputs 2100 umol. After reflector loss 12-13% is the best in the business you end up with like I stated 1850 umols. Just trying to keep you honest/straight.

@Yodaweed


The part where it says CSA certified lab test .....

Here's a direct link so you don't miss it !!!!


http://revolutionmicro.com/wp-content/uploads/2017/02/ATLS001-020-XXXXXX.pdf
 
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