Flip Chip Opto High Power Build Thread

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Doer

Doer

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Well, this really helps. It is a good case study, for the watt range. And the work is done. You could run 4 of those Flip Chip Opto, 85 mm COBS on a 12 inch cold plate.

http://www.lytron.com/Tools-and-Tec...-a-Heat-Exchanger-for-Cold-Plate-Applications

A customer wants to use a Lytron Press-Lock CP12, a 12" (30.48 cm) cold plate (plate side), to remove 1200 W of heat from a 12"x5" (30.48 cm x 12.70 cm) electronic device. The coolant is 1 gpm (3.785 lpm) of water and the room temperature is 20°C. He wants the smallest heat exchanger that will remove the 1200 W of heat generated by this device, while maintaining a maximum surface temperature of 80°C.

Step 1: First we determine the system thermal resistance,
SYSTEM:



Step 2: Any combination of cold plates and heat exchangers that provide a thermal resistance less than or equal to the total system requirement will work. In other words:



Table 1 shows that the CP12/6110 combination satisfies the 0.050 °C/W condition at 2 gpm (0.006 +0.042 = 0.048

By looking at the system as a whole, we can start to see trade offs between the components, including how flow rate can impact heat exchanger selection. At low flow rates, the cold plate thermal resistance increases. This requires a larger heat exchanger with more thermal capacity, and therefore lower thermal resistance. At higher flow rates, it is possible to use a smaller heat exchanger.
 
Doer

Doer

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CP10G01 TUBED COLD PLATE

Part#: CP10G01
The CP10™ is a cost-effective, single-sided aluminum cold plate available with either copper or stainless steel tubes. It is ideal for component cooling applications where the heat load is low-to-moderate. For help selecting a cold plate, please see our product selectors.

  • Dimensions L x W: 6.0" x 3.5" (152.4 mm X 88.9)
  • Performance: 0.059 °C/W (0.031 °F-Hr/BTU)
  • Fluid Compatibility: Water, Common Coolants
  • Wetted Path: Copper
  • Type: Tubed Cold Plates
  • Mounting Surface: Single-Sided
Lytron’s online store currently accepts orders from the USA and Canada. Customers from other countries email [email protected]

PRICE $85.00
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They even have Dual side mounting types?? Guys, some kind of lighting opportunity here. What about a side light that goes both ways to cover 2 rows? A few up lighting COBs as fill lights bounced off the ceiling?
 
Doer

Doer

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6310G3 COPPER TUBE-FIN HEAT EXCHANGER
Part#: 6310G3
The 6000 Series™ is an attractive, high performance heat exchanger that delivers efficient heat transfer and maximum reliability in a compact package. These heat exchangers have copper tubing expanded into copper cooling fins. They are electro-static dip painted for hostile environments and all units are supplied with built-in, fan-ready mounting hardware. For help selecting a heat exchanger, please see our product selectors.
  • Dimensions L x W x H: 12.9" x 2.1" x 12.0" (328 mm x 53 mm x 305 mm)
  • Performance: 2110 W (7201 BTU/Hr)
  • Fluid Compatibility: Water, Common Coolants
  • Wetted Path: Copper
  • Type: Tube-Fin Liquid-to-Air
Lytron’s online store currently accepts orders from the USA and Canada. Customers from other countries email [email protected]

PRICE $555.00
 
Doer

Doer

Well-Known Member
2500w heat exchanger should handle all of it just fine. Best to stay with the same company and match the specs between cold plant and exchanger.
http://www.lytrondirect.com/m10-160-copper-oem-coil-tube-fin-heat-exchanger/m10-160/

M10-160 COPPER OEM COIL TUBE-FIN HEAT EXCHANGER
Part#: M10-160
The copper OEM Coils™ are the ideal solution for large volume, price sensitive users who need a high quality, cost effective part however the appearance of the heat exchanger is not critical, such as when the heat exchanger is hidden inside of the equipment. For help selecting a heat exchanger, please see our product selectors.
  • Dimensions L x W x H: 20.0" x 2.0" x 10.6" (444 mm x 51 mm x 269 mm)
  • Performance: 2500 W (8532 BTU/Hr)
  • Fluid Compatibility: Water, Common Coolants
  • Wetted Path: Copper
  • Type: Tube-Fin Liquid-to-Air
Lytron’s online store currently accepts orders from the USA and Canada. Customers from other countries email [email protected]

PRICE
$479.00
 
D

Devildenis69

Well-Known Member
Hey,

waouh, you're posting a lot :eyesmoke:
just a little thing, the voltage regulator you've posted, I'm pretty sure it regulates its voltage by cutting it, basically an on/off system.
so I think the current waveform at its output would be kinda really dirty
 
Doer

Doer

Well-Known Member
Devildenis69 said:
Hey,

waouh, you're posting a lot :eyesmoke:
just a little thing, the voltage regulator you've posted, I'm pretty sure it regulates its voltage by cutting it, basically an on/off system.
so I think the current waveform at its output would be kinda really dirty
Click to expand...
Yeah, just taking notes. I think the regulator idea was just interesting but not useful.
 
Doer

Doer

Well-Known Member
@Sativied what does your ray tracer make of a double sided light source? One HiAmp COB putting 400w upward off the ceiling and then walls. The other putting 400w downward.

The heat is transported by the double sided cold plate, Junction temp, 30c. l/m3 79550 50.8vF@19a

Specifically I am interested in the question of indirect photon contribution to the direct source below. I am thinking fill lighting, to increase the footprint. Sure, both could be down facing. But, this is a big light and where it overlaps it is over flux Flux. I just wonder what the fill light contribution would be vs 2 COBs on a longer more costly cold plate.

It could just be a dumbass stoner idea on a Saturday night, too. :)
 
Doer

Doer

Well-Known Member
fobesterdam said:
this stuff is all over my head. :confused:

but arent there less expensive, more efficient, and proven designs out there? :idea::o:eyesmoke:
Click to expand...
What? So, no one brings new tech online? These are brand new patents. I don't even have the COB cost yet. But, just one is worth a 1000w HPS.

I am so surprised at the Luddite attitude, on RIU. Even your light and minor comment is sand in the gears.

I really thought this was a cutting edge, sub-forum, applauding new attempts.

Did you even look at the spec? 400w PAR.

Not you so much, I don't know you, but when I add your comment, to the general attitude all I can say is stogy and backwards thinking.

So, I'm curious. Why did you bother to say that? Examine your inner motives.

But, here is the answer. NO.
 
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Doer

Doer

Well-Known Member
Sunlight is 400 PARw/m^3 So I wish some more would think with me on this. But instead people question progress. They are challenged by new thinking. They seem to sweep back and forth in self fad. Followers. Sheep people.

But, let us guess the COB is $200 now. (it could be more or less)

800 COB (4)
170 Cold plates (2)
480 Heat exchanger
2100 Power supply(4)
170 Pump and plumbing
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$3720 for 1600 PARw = $2.32 per Pw

We put 600w x 4 waste watts = 2400 thru a 2500w heat exchange.
And we keep the Junction at 25c. That's the beauty of these COBs they can shed heat.

So this is by far the cheapest and most efficacious way I've seen yet.
 
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alesh

alesh

Well-Known Member
Doer said:
Yeah, just taking notes. I think the regulator idea was just interesting but not useful.
Click to expand...
Yeah simple&cheap design good for prototyping perhaps. Not really efficient to be used in a real application.

Can you elaborate how did you come with 400 PAR W/COB? From the data sheet I can see it's about 250 PAR W @Test current @Ta (what the heck is Ta?) 25°C.
 
Doer

Doer

Well-Known Member
I am just penciling but you see that if you run them at 19a it is almost 1000w and they can be driven to 1500w.

The patent is about Junction cooling. So, Ta is Temperature, Ambient. ie, the expected air temp in the grow room, it has to exist in.

Some electronics like in the example math for the Cold Plate run best at 85c.
These are so new, I asked for addition specs and graphs from the Company.

I assume they have same exterior quantum balance, as other Flip Chip COBs, that grows more inefficient with increased current. But, these run at 19a. That is a whole new current regimen and for all I know the efficiency curves are different.

I'll find out more on Monday.
 
Doer

Doer

Well-Known Member
Also that efficacy curve, I posted to open the thread. stops at 1.8amps. It is not the curve for this COB, P110-15S19P

I still am guessing at the 40% efficiency. It could be only 300wP. But, even then the ease of build and the raw concentrated power makes it worthwhile.

So, at first I thought it was a typo in the spec.

But, you do the math, it is not. The only way to get 950w or so @ 50.8vF is 19a.

Now if these COBs are $500, that's a deal killer. If they are only 20% efficient at 300wP, that's a deal killer.
 
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