Coffee Joulies – Keeping Your Coffee HOT

I came across an article in Gizmag today which I found interesting and I wanted to share this really great product with you.

Unless you’re someone who drinks their coffee fast, you likely face a bit of a conundrum when it comes to temperature – either you start with your coffee at the perfect temperature which ends up getting cold, or you have to let it cool down to the perfect temperature by starting with coffee that is too hot. Two young entrepreneurs, however, have created a product that they claim quickly cools your hot coffee to the right temperature, but then keeps it at that temperature twice as long as normal. Their product is called the Coffee Joulie.

Mechanical engineers Dave Petrillo and Dave Jackson grew up together in New Jersey, but have since ended up on opposite sides of the U.S. That hasn’t stopped them from collaborating on the Coffee Joulies design over the past nine months.

Each Joulie contains a proprietary, non-toxic phase change material that is sealed within a polished stainless steel shell. The product is placed at the bottom a coffee mug (or other container), to which hot java is then added. The secret internal material is designed to melt at 140F (60C), absorbing heat energy from the coffee as it does. This reportedly allows the Joulie to cool coffee three times faster than normal.

Once the Joulie has cooled down past 140 degrees, however, it starts to solidify again, thus releasing the energy it stored while melting. This is what keeps the coffee warm for twice as long as a non-Joulified beverage.

Best results are obtained with a covered, insulated container, while heat-absorbing ceramic mugs offer the poorest performance. Users need to experiment with different amounts of Joulies and/or with pre-heating them, depending on the size of the container and whether or not an individual cools their coffee by adding cream.

Needless to say, the product does take up room that would otherwise be occupied by liquid. It pretty much comes down to a question of coffee quantity versus coffee temperature.

The two Daves have been making limited numbers of Coffee Joulies by hand, but are currently trying to raise funds to start automated production at an existing silverware plant. They are doing so by offering Joulies in exchange for pledges on the Kickstarter fund-raising website. $40 will get you five, $100 will get you five Joulies with a custom Thermos travel mug, and the $500 Coffee Shop Pack will score you 20 sets of five.

Check out the project information on their Kickstarter page.