I'm brand new to the forum, so let me introduce myself first. I'm a college student in Vermont, studying Electro-mechanical engineering. I was introduced to the world of High Altitude Balloons last year, and a few weeks ago we launched the Eagle Pro kit to 25 kilometers altitude. It landed in the very top of a tree, hours and hours away. With help from the local fire department, and permission from the land owner, we were able to get it down by cutting the tree.
Currently, we are setting up our second weather balloon to launch, planning to use an Arduino and various sensors. As such, we are considering a styrofoam box as being our best bet, but I have a question, something I've been curious about for a while.
Here's the question: as altitude goes up, temperature goes down, but pressure also goes down. At the lower pressures, will heat be sucked out of the payload at a lesser rate even though it's so cold, and is this effect significant enough to effect design?
Thank you for any responses!