"It is certainly possible as I no longer have the exact specs for the older windows. My belief, however, is that exterior surfaces of both old and new glazings are uncoated so what we are seeing is related only to the difference in actual heat…"
"Here is another image showing R=10 windows (Serious brand) on the right and conventional double-glazed, nitrogen-filled windows on the left (there is a screen on the right window of these). Interior temperatures are identical in both rooms."
"You should be skeptical, Davide!! Something is clearly not right. Windows are about 20% reflective but all of them at that angle could be reflecting the same cold sky.
I think the interior temperatures of the buildings were different. I have…"
"If my memory is good, RESNET talk of a deltaT of only 3°F for conducting an infrared inspection with blower door: it happens many times and its' about a 100 mK NETD. here are some image with my Ti32.
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