Team I have this question.
years ago when we were diving actively we could store scuba tanks in the hot trunk of a car, on a strap rack, no airflow, on a scorching hot texas day as long as wet towels were laid over the tanks. it was the strangest physics I'd seen still to this date, the temp differential it could maintain was insane. 105 deg texas day and the tank is literally chilled under the wet beach towel, was radiation transfer that effective even though there's no currents inside a closed car trunk
sitting the tanks in the trunk without the cooling is obvious risk, they'd overheat.
wet towel was common practice here it worked all the time consistently and was baffling just contact alone could wick heat away, with heat surrounding the towel not cool air. And, the towel held water longer it did not dry out for hours on end. the tanks were always cool to the touch, 105 degree days no convection air. must have been high humidity inside low evap off the towel but still enough to keep pressurized steel tank cool to touch
years ago when we were diving actively we could store scuba tanks in the hot trunk of a car, on a strap rack, no airflow, on a scorching hot texas day as long as wet towels were laid over the tanks. it was the strangest physics I'd seen still to this date, the temp differential it could maintain was insane. 105 deg texas day and the tank is literally chilled under the wet beach towel, was radiation transfer that effective even though there's no currents inside a closed car trunk
sitting the tanks in the trunk without the cooling is obvious risk, they'd overheat.
wet towel was common practice here it worked all the time consistently and was baffling just contact alone could wick heat away, with heat surrounding the towel not cool air. And, the towel held water longer it did not dry out for hours on end. the tanks were always cool to the touch, 105 degree days no convection air. must have been high humidity inside low evap off the towel but still enough to keep pressurized steel tank cool to touch
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