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Phase Change cooling for DIY Projector

post #1 of 9
5/12/12 at 10:29am
Thread Starter 
Hello guys

I have built a Projector with Bulb, now i want to replace this with 100w LED, Now LED generates huge heat so, for this i wish to use Phase Change cooling,

the advantages of this phase change cooing with DIY PJ is

1. improves Colour Temparaturs
2. More Lumen output
3. Longer life of LED and other parts.


Now, can any one suggest me from where i start..

I know the main part of Phase change cooling is Compressor what is the best compressor for this? as i use this in projector, it should be less noise and light weight. currently when LED is operated with single row radiator water cooling the temperature is around 40deg, now when power watts are increased to LED the heat will also increase, so i want to the evaporator to be at ~ -10 to -20 degrees
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post #2 of 9
5/14/12 at 1:40am
Quote:
Originally Posted by diypj View Post

Hello guys
I have built a Projector with Bulb, now i want to replace this with 100w LED, Now LED generates huge heat so, for this i wish to use Phase Change cooling,
the advantages of this phase change cooing with DIY PJ is
1. improves Colour Temparaturs
2. More Lumen output
3. Longer life of LED and other parts.
Now, can any one suggest me from where i start..
I know the main part of Phase change cooling is Compressor what is the best compressor for this? as i use this in projector, it should be less noise and light weight. currently when LED is operated with single row radiator water cooling the temperature is around 40deg, now when power watts are increased to LED the heat will also increase, so i want to the evaporator to be at ~ -10 to -20 degrees

You could get away with a small 12v compressor tbh, the benefit of these are they're small, power efficient, quiet and can dynamically adjust speed depending on heat load.

Do you know how many watts of the heat the LED is churning out at peak?
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post #3 of 9
5/14/12 at 10:34am
Thread Starter 
I am not much techy guy to understand the specs of the compressor, can you give me good link to 12v compressor? Also which is the best place to buy this compressor?
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post #4 of 9
4/23/13 at 7:33am
Thread Starter 
http://www.ebay.in/itm/12V-Electric-Car-bike-tyre-tire-inflator-air-pump-compressor-/251150488610?pt=LH_DefaultDomain_203&hash=item3a79bc5422

is this OK? Can i make Phase change system with this compressor?
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post #5 of 9
4/23/13 at 2:01pm
  • NoL
  • Extreme Cooler
No, that is an air compressor.
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post #6 of 9
4/24/13 at 2:38pm
100W LED!! Mother of God, do you want to burn through your walls or something?!
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Will last until 2015!
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Trinity Portable AIO
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AGP bencher
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Phenom X6 1055T ASUS M4A89GTD Pro/USB3 Sapphire HD 6950 2GB Kingston HyperX DDR3-2000 
Hard DriveHard DriveCoolingCooling
Seagate 7200.12 Samsung SpinPoint F3 EK Supreme HF EK CoolStream XT360 
CoolingCoolingOSMonitor
Alpahcool Coolplex Pro 10LT Phobya DC12-400 Windows 7 Ultimate & Fedora 17 LG IPS235V 
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post #7 of 9
4/24/13 at 2:50pm
The wattage of LEDs and light bulbs are completely different. You want similar lumen ratings, not wattage. You could also go for an array of LEDs instead of a single large one. That'd decrease heat output and probably be a lot safer than running all that juice for the big LED.
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post #8 of 9
4/25/13 at 1:51am
Quote:
Originally Posted by poizone View Post

The wattage of LEDs and light bulbs are completely different. You want similar lumen ratings, not wattage.

This, and also, remember that LEDs do not generate a 'huge amount of heat'. A light bulb will generate WAY more heat than a LED array. The problem with LEDs is that they need to be kept in a much tighter temperature margin. You want them to ideally be below 50-55ºC, while a discharge arc bulb can operate up to a few hundred degrees Celsius (the inner arc is up in the thousands, though)
Will last until 2015!
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Trinity Portable AIO
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AGP bencher
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Will last until 2015!
(18 items)
 
Trinity Portable AIO
(13 items)
 
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Phenom X6 1055T ASUS M4A89GTD Pro/USB3 Sapphire HD 6950 2GB Kingston HyperX DDR3-2000 
Hard DriveHard DriveCoolingCooling
Seagate 7200.12 Samsung SpinPoint F3 EK Supreme HF EK CoolStream XT360 
CoolingCoolingOSMonitor
Alpahcool Coolplex Pro 10LT Phobya DC12-400 Windows 7 Ultimate & Fedora 17 LG IPS235V 
MonitorKeyboardPowerCase
LG E2250V Logitech G11 NOX Sonar 780W (Kingwin 750W 80+) Lian Li PC-A05NB 
MouseAudio
Logitech G9 ASUS Xonar DX 
View all
CPUMotherboardGraphicsRAM
AMD A10-5700 Gigabyte F2A75M-HD2 Radeon 7660D G.SKILL Ares 2133 CL9 
Hard DriveCoolingOSOS
Hitachi 5K750 Noctua NH-L9a Fedora 18 Windows 7 x64 
MonitorKeyboardPowerCase
AUO B156HW01 Logitech MK220  PicoPSU-80-WI-25V AIO Aluminium Handmade 
Other
TP-LINK 150 N/G/B 
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CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
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post #9 of 9
4/25/13 at 3:45am
Here is a 12v compressor you can use. They are expensive but do have their place Aspen
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