I'm bloody confusedCan someone help me with this problem?How much heat would be required to increase the temperature of 1.000 kg of aluminum by 4.000 degrees celsius?My chemistry teacher was gone all last week so this wasn't explained.
Wow , hadn't considered the ice crystal thing but .HmmmmmmI have had the bubble thing happen with my thermarest thoughI think both of the ones you listed will suit you fine.Although the first ones seem superiorA closed cell would probably be better , in theory , but I've used the open celled with no problemI'm sort of a wimp nowadays , and usually double my pads in winterI really like the firm , bulky foam pad I know it's cumbersome , but when used with my smallest inflatable mat (similar to the small one in the first link), it's greatI've camped down to 17 degrees F , mid Feb KyWoulda done colder but , that's all she hadedit So closed cell means , non inflatable ? The photo in the link stunkAnyway , that is probably the kinda pad I useIt's a piece of dense foam and insulates rather wellYou just roll it up and strap it to your packBut , like I said , I use an inflatable one as well now Mine rolls up to about the size of a coffee can , and fits in my tent sackOH YEAH ! Take along some glove warmers ! If only a couple I swear , you throw one of them in your bag with you , or in you cap while you sleep and they really turn up the heatI put them in my back pockets when I hike and sometimes, when I sit ,I swear my butts on fire for a split secondI jump up , then I realize , and try to play it offLike I said I've become a little wimpy , but I haven't gotten really cold while camping for nearly a decade now.
This is an energy questionIt takes energy to raise the temperature of somethingFirst of all we need to know the heat capacity of aluminumYou should have some sort of table to find thisOne value I found was 0.897 J/(g-K) meaning it takes 0.897 Joules of energy to raise the temperature of 1 gram of aluminum by 1 degreeIn this case you have 1 Kg of aluminum, which is 1000 grams and you want to raise the temp by 4 degreesJ 0.897J/(g-K) x 1000g x 4K The g and K cancel out leaving J Do the mathGood luck!!
Of the two you mentioned I would go with the first oneI spent a lot of time in NY hunting and I know what its like to freeze your blls off, I know that your looking at these and I must say I am impressed with both of themThe best thing for you to do is make a choice and commit to itThe best thing for you is to make sure that you have a very nice sleep system (sleeping bag) I own one that is military issue, it has three layers and is very warmUsually I have to remove one of the layers during the winter, but never has it let me down and let me freeze.
