Yes that's a traditional way to use air stream to force the temperature. We have developed a much more cost-efficient and accurate technology using direct conductI remember being a line tech for Rockwell Int. 9good work if you can get it, testing Microelectronic circuit many for military we used somthing called the elephant it was a dewyr bottle filled with liquid nitrogen to test these circiut to-60°C and150°C to meet milspec temp requirements.the trunk of the "elephant was a air blower that woul blow temp controlled N2 to the UUT.Nowadays it is done fairly differently.
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