i have a stanley thermos, bought three years ago, and now no longer keeps coffee hot, why?
90032
If you can remove the inner liner of the thermos, check to see that it's instact. Thermoses work by using a double-walled container, traditionally made of glass, with a vacuum between the walls. Because there's no air between the walls, there's no heat transfer - so heat is lost only through the stopper, and not through the walls of the thermos itself. If, however, the vacuum is broken then it wacts just like any other Tupperware container.
556306
its the water evaporating from the coffee!
1080719
Well, it's time to clean it. Go to the store- any store that has techie stuff - and get some canned air. Bring it back. Turn the thing upside down and tap it on the table. Damn! Look at all those crumbs, chocalate crumbs, jelly and assorted coffee blots! No wonder your keyboard sticks. Blat the living crap out of the keys, inside every crevice you can. \n Don't take the advice of those who will inevitably say you can hose it down or put it in the dishwasher. I am a fan of hosing all kinds of electronics, fans, etc., down. But not keyboards. They don't like water. Stick to the canned air.
218802
There's several options really. Could just be a battery issue, a memory issue, maybe something in there fried (which sadly is the most likely). Honestly though, I would recommend taking it in to the place where you bought it/ calling the manufacturer to find out, provided it's not adressed in the owners manual. They'd know, where-as we can only make half-assed geusses.
221103
There is water/gas cooling heat exchanger are started first to avoid overheating. There is some checking for Hydrogen which can mean a water leak into the core. The 3mile island problem is online. It explains what the operators did to worsen the problem and what could have been done in detail.\nTry Am Institute of Physics, Physics Today site.
1158331
If it's still under warranty I would exchange it.  If you still have the same problems with the new one, I would get my money back and buy another brand.
178242
Try this...\nhttp://www.thermosproducts.com/replacement-parts.html
13857
Get a new one. The split could become contaminated and is very hard to clean.
747619
Does it have to be a material? the best solution for this would be to have 2 cans one just inside the other with a compleat vacume between them, as there is no air to transmit the heat between them the liquid inside wont change tempreture.\n\nthis is the principle of a thermos flask,\n\nif you need an actual material, somthing that would trap air to stop it from moving and spreading the heat such as glass fiber like you might have in your loft\n\nhope this helps
880117
Scientists at the Massachusetts Institute of Technology (MIT) did a scientific study on this years ago.\n\nThe rate of loss of heat from a liquid is a function of the starting temperature to the 4th power (T^4).  So, if you want your coffee to stay warmer longer, add the milk immediately.  It immediately reduces the initial temperature.
994883
That is exactly what happened to mine.  It was supposed to be a "memory - free" battery, but.....\nOnce it's fully charged, unplug it and let it drain completely before you charge it again.  I left mine plugged in and eventually it wouldn't hold a charge at all, and it was only two years old.
404922
It may be over-heating
943213
find somthing that you know hel' love and suggest that for him to by...and if he does end up getting the coffe thermos take the product back to the store for at least store credit and get him something else... good luck
703429
It has a short.  Please unplug it immediately, as it may start a fire, and contact the maker.  If it's still under warranty, they may replace it; if not, it's a flaw in their product they need to be made aware of so that other people aren't hurt.
241483
All the thermos does is prevent (or slow down) the transfer is heat energy.\n\nHeat always flows from hot to cold.  If you put a hot liquid into the thermos, then the outside air is cooler than the inside, so natually, heat tends to flow out of the thermos.  If you put a cold liquid into the thermos, heat tends to flow into the thermos from the relaitvely warmed air outside.  What the thermos does is try to prevent this transfer of heat so your hot liquids stay hot and your cold liquids stay cold longer.
908233
What temperature does your magnets work at and how do u prevent a crash if u loose the refrigerant.
1043945
Throw it in the garbage.\n\nBuy a brand new one.