I think it will only make things worse, because of the heat dissipation the TEC will do.
If I have a sensors that produce X watts, a thermal conduction and loss through the Dewar of Y watts and a light-electricity conversion loss of Z watts.
I need an amount of nitrogen that is converted to gas...
TEC work well in small difference of temperature. I think 240C (40C to 80 Kelvin) of difference will be too complicated and too power hungry.
Another solution is a Stirling cooler, but it produce too much vibration as we have positioning requirement for the sensor of about 3µm.
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Here's my system (at the design stage):
-Two Dewar to hold each one infrared sensors.
-The Dewar are filled with liquid nitrogen
-The Dewar are inside a vacuum chamber, so we'll have LN2 feed through for refill and exhaust. Four in total.
-The vacuum chamber is inside a small plane (bigger than...
