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Author Topic:   Cooler Test Reported in Long Video

jcdawg83 posted 01-20-2014 01:47 PM ET (US)
I found this [video posted on the internet which contains information about coolers] to be very interesting. I was surprised to see the Yeti's performance and also surprised to see the Coleman's.
[Skip ahead in the seven-minute recording to about six-minutes, thirty-seconds. The overall results are given at that point.--jimh]
contender posted 01-20-2014 08:42 PM ET (US)
What the results tell you does not matter. [The results] depends on how many times you open the lid, how [well] [the lid] closes, [the] outside air temperature, and how much stuff inside [the cooler].
Chuck Tribolet posted 01-20-2014 09:22 PM ET (US)
...depends on:
how many times you open the lid (was hopefully constant)
how good it closes (does depend on this)
outside air temp (was hopefully constant)
how much stuff inside (was hopefully constant)"
My beef was that you had to watch a seven-plus minute video
when a web page I could read in 30 seconds would have
sufficed. And unless you take notes, there's no way to
review the results without watching the video.

Chuck
Chuck Tribolet posted 01-20-2014 09:23 PM ET (US)
And I don't think how much stuff was inside was relevant.
Once the stuff inside is at inside temp, it doesn't make much
if any difference.
Chuck
jimh posted 01-20-2014 11:31 PM ET (US)
The volume and density of the material inside the cooler will affect the temperature of the cooler over time. Heat can leak into the cooler at a certain rate, determined by the cooler's insulation. If there is mostly air inside the cooler, there is not much mass in the cooler. If there is a 500-lbs chunk of ice-cold steel, it will stay cold much longer than just air.
Chuck Tribolet posted 01-21-2014 08:58 AM ET (US)
The heat content of that ice cold steel is way less than
heat absorbed by the phase change of ice to water. And as
long as it's the same for all the chests under test, it's
not relevant.
Chuck
jcdawg83 posted 01-21-2014 09:23 AM ET (US)
Sorry I posted the video. I didn't mean to create such a controversial issue.
jimh posted 01-21-2014 09:54 AM ET (US)
Don't worry about posting a link to the video. There is not really very much in the video that is controversial. The video has already been brought up and discussed at length in a prior thread. See the thread from two years ago, when the recording was a bit newer:
http://continuouswave.com/ubb/Forum1/HTML/021206.html
Chuck--it takes less heat to warm 1-cubic-feet of air than it does to warm 1-cubic-feet of steel. I am not very smart about thermodynamics, but I know at least that much. There is much more mass in a dense solid like steel than in a gas of the same volume.

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Author	Topic: Cooler Test Reported in Long Video
jcdawg83	posted 01-20-2014 01:47 PM ET (US) I found this [video posted on the internet which contains information about coolers] to be very interesting. I was surprised to see the Yeti's performance and also surprised to see the Coleman's. [Skip ahead in the seven-minute recording to about six-minutes, thirty-seconds. The overall results are given at that point.--jimh]
contender	posted 01-20-2014 08:42 PM ET (US) What the results tell you does not matter. [The results] depends on how many times you open the lid, how [well] [the lid] closes, [the] outside air temperature, and how much stuff inside [the cooler].
Chuck Tribolet	posted 01-20-2014 09:22 PM ET (US) ...depends on: how many times you open the lid (was hopefully constant) how good it closes (does depend on this) outside air temp (was hopefully constant) how much stuff inside (was hopefully constant)" My beef was that you had to watch a seven-plus minute video when a web page I could read in 30 seconds would have sufficed. And unless you take notes, there's no way to review the results without watching the video. Chuck
Chuck Tribolet	posted 01-20-2014 09:23 PM ET (US) And I don't think how much stuff was inside was relevant. Once the stuff inside is at inside temp, it doesn't make much if any difference. Chuck
jimh	posted 01-20-2014 11:31 PM ET (US) The volume and density of the material inside the cooler will affect the temperature of the cooler over time. Heat can leak into the cooler at a certain rate, determined by the cooler's insulation. If there is mostly air inside the cooler, there is not much mass in the cooler. If there is a 500-lbs chunk of ice-cold steel, it will stay cold much longer than just air.
Chuck Tribolet	posted 01-21-2014 08:58 AM ET (US) The heat content of that ice cold steel is way less than heat absorbed by the phase change of ice to water. And as long as it's the same for all the chests under test, it's not relevant. Chuck
jcdawg83	posted 01-21-2014 09:23 AM ET (US) Sorry I posted the video. I didn't mean to create such a controversial issue.
jimh	posted 01-21-2014 09:54 AM ET (US) Don't worry about posting a link to the video. There is not really very much in the video that is controversial. The video has already been brought up and discussed at length in a prior thread. See the thread from two years ago, when the recording was a bit newer: http://continuouswave.com/ubb/Forum1/HTML/021206.html Chuck--it takes less heat to warm 1-cubic-feet of air than it does to warm 1-cubic-feet of steel. I am not very smart about thermodynamics, but I know at least that much. There is much more mass in a dense solid like steel than in a gas of the same volume.