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  • Users: kosy
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  1. kosy

    combining flow calculation

    any one can guide me for info of combining flow calculation?
  2. kosy

    Piping calculation

    How can I calculate the back pressure for combining flow in piping system? where can i get the formula?
  3. kosy

    how to set power absorption for encapsulant?

    hi everyone, fristly thanks for Transient1 replies. My assumption(in %)just a example but in fact the encapsulant will capture small portion of heat from light. As transient 1 said, 5 Watts in the Encapsulant (Total Volumetric Heating), the problem is how do i apply this by using Ansys WB...
  4. kosy

    how to set power absorption for encapsulant?

    hi everyone, actually the condition is like this.. normally 20% of the power disspated from Die will transitted into light. however there is 5% of the light(heat)be captured in the encapsulation. this amount of heat might cause the LED become failure. so by using ansys WB, how do i do the...
  5. kosy

    how to set power absorption for encapsulant?

    hi erveryone.. i find difficulty to do my simulation by using Ansys Workbench. The problem is i know that the epoxy encapsulant for a high power LED will capture small amount(known amount) of heat. In my simulation, i dono how to apply this condition in. What should i do? thanks
  6. kosy

    why silicone temperature higher that die temperature?

    im sorry. Or i change my question a bit. If we use FEA method to simulate or analyze LED, i will found that the temperature of silicone is lower than die tempperature. however in real life, the silicone temperature is much higher than die temperature as i mentioned before this. In order to...
  7. kosy

    why silicone temperature higher that die temperature?

    For high power LED, why the temperature of silicone can reach around 200 degree C although the die temperature only around 100++ degree C? where can i find related journal regrading to the Q?
  8. kosy

    thermal stress for LED

    For high power LED, why the temperature of silicone can reach around 200 degree C although the die temperature only around 100++ degree C? where can i find related journal regrading to the Q?
  9. kosy

    thermal stress for LED

    i would like to ask where can i find journals for thermal stress analysis for LED?
  10. kosy

    LED's brightness

    what parameters will affect the LED's brightness? is it the brightness of LED is total up of each LED i have dispate the distance between them?

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