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re: OT Engineers—How Insulating is Bubble Wrap?
Posted on 12/21/22 at 3:50 pm to JudgeHolden
Posted on 12/21/22 at 3:50 pm to JudgeHolden
Bubble wrap can withstand absolute zero. Trust me, I'm a Custodial Engineer.
This post was edited on 12/21/22 at 3:52 pm
0
Posted on 12/21/22 at 3:50 pm to JudgeHolden
Coozie, grocery bag & electrical tape never fails 
Posted on 12/21/22 at 3:51 pm to JudgeHolden
Air is an excellent thermal insulator. Hence its use in double pane windows and Styrofoam coolers. Those Styrofoam style cap covers function well due to fact that air makes up the majority of Styrofoam's volume and you essentially create a large air pocket around the valve.
Posted on 12/21/22 at 3:52 pm to h0bnail
quote:
Not sure air is a very good insulator.
Air is the opposite - poor conductor of heat. It's why you dress in layers.
Posted on 12/21/22 at 3:54 pm to JudgeHolden
its not a good insulator. Try sleeping on an uninsulated air mattress in the cold to see how "good an insulator air is"
ETA - when people say air is a good insulator, of course it is compared to something conductive like liquid or solid. But his question is about application. A layer of bubble wrap will slow convective heat transfer and do little to prevent radiant and conductive heat transfer.
When people say that air is a good insulator, they are referring to trapped pockets of air that limit convection. A single 1/4" pocket of air is not great. Thats why your outer walls actually have insulation in them. Thats why jackets use down or synthetic fibers with many trapped pockets of air.
Like I said, go sleep on an uninsulated air mattress on a cold night and see how you feel. It sucks. Go zip yourself up in a tent (giant air pocket) and see if you freeze when temps drop below 20.
ETA - when people say air is a good insulator, of course it is compared to something conductive like liquid or solid. But his question is about application. A layer of bubble wrap will slow convective heat transfer and do little to prevent radiant and conductive heat transfer.
When people say that air is a good insulator, they are referring to trapped pockets of air that limit convection. A single 1/4" pocket of air is not great. Thats why your outer walls actually have insulation in them. Thats why jackets use down or synthetic fibers with many trapped pockets of air.
Like I said, go sleep on an uninsulated air mattress on a cold night and see how you feel. It sucks. Go zip yourself up in a tent (giant air pocket) and see if you freeze when temps drop below 20.
This post was edited on 12/22/22 at 8:48 am
Posted on 12/21/22 at 3:56 pm to JudgeHolden
quote:
How Insulating is Bubble Wrap?
If I had to guess at an R-value, I'd probably end up around 0.1, meaning it ain't doing much of anything for you.
Posted on 12/21/22 at 3:57 pm to JudgeHolden
Most bubble wrap has an R value of 1.1.
Compared to "regular" foam pipe insulation it has an R value of 3.
Just wrap your bubble wrap 3 times to get more insulative value from your bubble wrap than regular pipe insulation and tape it well so air cannot move in and out.
Compared to "regular" foam pipe insulation it has an R value of 3.
Just wrap your bubble wrap 3 times to get more insulative value from your bubble wrap than regular pipe insulation and tape it well so air cannot move in and out.
Posted on 12/21/22 at 3:58 pm to JudgeHolden
quote:quote:Miricun. Dafaq do you take me for, some kind of hippie?
African or European Bubble Wrap?
Someone needs to broaden their film library
Posted on 12/21/22 at 3:59 pm to Bestbank Tiger
quote:
Not sure air is a very good insulator.
quote:
Air is the opposite
quote:
poor conductor of heat.
The frick?
Posted on 12/21/22 at 3:59 pm to Galactic Inquisitor
Towels and duct tape. Takes about 3 minutes.
Posted on 12/21/22 at 4:00 pm to jamiegla1
quote:
its not a good insulator. Try sleeping on an uninsulated air mattress in the cold to see how "good an insulator air is"
that's not how any of this works
Posted on 12/21/22 at 4:01 pm to GumboPot
quote:
Most bubble wrap has an R value of 1.1.
That's foil-faced bubble wrap, not packing bubble wrap.
Posted on 12/21/22 at 4:01 pm to JudgeHolden
Try foil. I put it in the windows of my home and it works great.
Posted on 12/21/22 at 4:03 pm to RobbBobb
quote:
Someone needs to broaden their film library
Ok, ok. I get it now!
Posted on 12/21/22 at 4:04 pm to bee Rye
quote:
that's not how any of this works
That's exactly how it works. There's a reason why Yeti cups are "evacuated cylinders." The vacuum pulled reduces the molecules available to convect within the walls.
Will an air pocked slow down heat loss? Yes. Would I, as an engineer and certified energy manager use it to wrap my pipes before this cold front? Only as an absolute last resort. As someone above mentioned, an old rag and duct tape will work far better.
Posted on 12/21/22 at 4:04 pm to Galactic Inquisitor
quote:
That's foil-faced bubble wrap, not packing bubble wrap.
Oh, we are talking about packing for shipping?
Then IDK. It's probably close. Posted on 12/21/22 at 4:05 pm to GumboPot
quote:
Just wrap your bubble wrap 3 times to get more insulative value from your bubble wrap than regular pipe insulation and tape it well so air cannot move in and out.
Better than nothing, but just barely.
Posted on 12/21/22 at 4:06 pm to GumboPot
quote:
Oh, we are talking about packing for shipping? Then IDK. It's probably close.
I assumed that's what he's talking about.
Posted on 12/21/22 at 4:09 pm to Galactic Inquisitor
quote:
The vacuum pulled reduces the molecules available to convect within the walls.
Yeti also coats the inside of their cups with copper through copper electroplating. Copper is an excellent reflector of infrared radiation. Most cup manufactures don't go the extra step to insulate for radiation.
Posted on 12/21/22 at 4:10 pm to beerJeep
While bubble wrap was thought to be non migratory recent science is open to a theory they do migrate but need the help of avians to complete the migration process. However, due to modern political intrusion it is becoming apparent that crossing country borders would make the bubble wrap illegal.
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