A Thermos Keeps Drinks Warm or Cold
There are many different types of coffee thermoses available to coffee lovers. A coffee thermos can come in all types of sizes and styles. You can purchase a thermos that holds 14 or 20 ounces of your favorite hot beverage. This is great for commuters. If you spend a lot of your day on a bus or train or sitting in your car stuck in traffic, this type of receptacle will keep you caffeinated on your journey. It’s not just coffee that people put into their thermos. You can keep hot tea or even soup in a thermos—anything you want to keep warm and insulated.
Keep it Hot for Eight Hours, Cold for Twelve
The coffee thermos effectively slows the rate of speed by which heat escapes. Sometimes coffee is kept so hot that you can burn yourself if you’re not careful. The thermos is so well insulated, coffee or hot chocolate will be hot and fresh when you’re ready for it. Probably the best coffee thermos for keeping drinks hot is the Nissan coffee thermos. Put hot coffee in this, drink half of it on the way to work, leave after an eight hour day, and it’s still hot!
Large Coffee Thermos
A coffee thermos isn’t just for individuals, of course. There are larger sizes as well. These bigger flasks are often used for long car trips and prove invaluable for campers who can expect to be hiking in the woods for hours. Thermoses don’t just keep liquids hot, they can keep them cool as well. A thermos of Bloody Mary’s might be the perfect thing to bring to an afternoon picnic. You can keep juice or iced tea in a thermos as well. Whatever your favorite beverage, hot or cold, a thermos will hold the temperature for a longer period of time than a plastic, or even glass container.
Kick the Starbucks Habit – a Thermos Will Pay for Itself
Investing in a quality thermos will save you money in the long run. Just think about how much you spend on daily trips to your favorite coffee spot. That can really add up over the course of a year. By buying and brewing your own coffee at home, and bringing it with you to the office or work site, you will really save money. The thermos will pay for itself in just a week or two.
Bring Soup for Lunch
Many of us remember back to our elementary school days when we took our lunches to school in a lunch box and thermos. We didn’t drink coffee back then, of course, but these small containers would be filled with our favorite soup instead. Chicken noodle or Alphabet soup would stay hot throughout the morning until we were ready to eat at lunch time. These thermoses were often decorated with our favorite Saturday morning cartoon characters. Collectors seek out these vintage thermoses. If they are in good shape, they can be worth quite a bit of money. You might want to check your attic or your basement and see if your old thermos and lunch box are still there. They might be worth something if you’re willing to part with them.
Stanley Coffee Thermos
With time, Stanley’s design became a classic, with Stanley Thermoses seen on jobsites all over the world. This is one of the best models of coffee thermos. Check out this review from R. Scott Broadway on Amazon:
Over the weekend I bought a Stanley thermal bottle. I’ve been wanting a thermal carafe for a while now, and this one has the capacity for a liter of coffee, tea, soup, etc.
I was really jazzed about this specific bottle, because it is aesthetically rich in testosterone. The design seems to be straight out of the first half of the 20th century. So you know geeky-old-me, I had to perform a thermal performance test. I first pre-heated the bottle for several minutes using hot tap water. I filled the carafe to the brim with boiling water, and checked the temp using my probe thermometer. 205 degrees. This morning, exactly 8 hours after my initial measurement, I cracked the bottle for a second reading…an astonishing 177 degrees (I woulda thought 150-ish). The probe thermometer showed that the temperature of the room was 73 degrees, and I had the AC’s thermostat constant the entire time.
If you run the numbers through Newton’s Law of Cooling, you find a K-value of 0.029801 per hour given my environment and observations. By empirical calculation, that means that the bottle’s contents would cool down to 150 degrees in about 18 hours at room temp (the temperature I would still consider a beverage or soup pretty hot). 24 hours after filling with near-boiling water, the contents would likely be near 137.5 degrees…still pretty hot, and still somewhat capable of fighting off some foodborne illnesses. It would take 53 hours for the bottle’s contents to cool to 100 degrees.
Your mileage may vary, but this thing appears to be a winner.
How Does a Coffee Thermos Work?
The design for the insulated storage container known commonly as a thermos, is really quite simple. It actually consists of two separate containers. The smaller flask fits inside the larger one, but the two sides do not touch. These two containers are joined or molded together at the top. The technical term for this type of vessel is “vacuum flask.” It was invented in 1892 by the Scottish scientist, Sir James Dewar. Although it is increasingly rare these days, this vessel is sometimes referred to as the Dewar bottle or Dewar flask. German glassblowers perfected the design of Dewar’s flask and the Thermos company purchased the technology and further developed the design. They began creating a range of models for their product. The Thermos name has become synonymous with the vacuum flask, much like Band-Aids and Kleenex are for bandages and tissues.