Radiative cooling system with three rings cold directed

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Radiative cooling system with three rings cold directed

Post  Alessandro on Tue Jun 09, 2009 5:29 pm

Example of use of the cooling system with three rings ("cutting cones"):
(Also opaque surfaces are cone cut!)

The following image shows the geometric structure, the effect of directionality, and the evolution of temperature
on the surface of the mirror (this is not the Laser).

Temperature of cold surfaces: 70 K
Temperature of opaque surfaces: 295 K

The geometrical structure of the system could allow the use of laser control of the mirror!



We know that the reference curve is as follows (due to Laser, without cooling):



The curve obtained from the simulation is as follows:



For both curves above take away the ambient temperature 295.0K.
We get an increase due to the YAG laser and a decrease due to radiative cooling system directed:



Sum between the two curves shown in the figure above:



Conclusions:


  • The directionality must be optimized.
  • The opaque surfaces are better calibrated.
  • The system is very sensitive to small changes.
  • We must work hard on the geometric structure.


Last edited by Alessandro on Mon Jun 15, 2009 1:38 pm; edited 1 time in total
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Alessandro

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interesting results

Post  Alessio on Wed Jun 10, 2009 12:09 pm

Alessandro,
this are interesting results. I would turn on the YAG laser heating to see the total effect.
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Test final

Post  Alessandro on Thu Jun 11, 2009 1:22 am

I would like to insert the laser when the difference between the two curves will be completely nothing (or almost).
I would like to improve the cooling curve for 3/4 of the mirror.
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Re: Radiative cooling system with three rings cold directed

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