Posted by Rachel | Posted in Coffee and Accessories | Posted on 26-07-2010
Tags: coffee vacuum flasks
In a 25°C room, hot coffee in a vacuum flask cools from 77°C to 54°C in eight hours.?
What will its temperature be after another eight hours?
77°C – 54°C = 23°C
54°C – 23°C = 31°C
25 X .5 = 12.5
23 – 12.5 = 10.5
31 + 10.5 = 41.5
X = 41.5°C
Cylindrical Stainless Steel Vacuum Flasks
|
|
Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue $18.85 16 OZ, Leak Proof Travel Tumbler, Patented Thermos Vacuum Insulation Technology For Maximum Temperature Retention, Hot Or Cold, Unbreakable Stainless Steel Interior & Exterior, Cool To The Touch With Hot Liquids, Sweat Proof With Cold, Fits Most Automobile Cup Holders…. |
|
|
Thermos Sipp 16-Ounce Vacuum-Insulated Travel Tumbler, Stainless Steel $20.44 Introducing Sipp by Thermos. The Sipp Thermos line of products combines sleek style with unique functional features. The TherMax double wall vacuum stainless steel tumbler will keep hot for 5 hours and cold for 9 hours. The Eastman Tritan lids are BPA free and have a built- in tea hook for tea bags or most loose leaf infusers. Leak-proof lid with one hand push button operation; dishwasher safe; 16… |
|
|
Thermos Nissan JMW500P6 16-Ounce Stainless-Steel Backpack Bottle, Silver $19.08 Vacuum Insulated Stainless Steel Commuter Backpack Bottle TherMax double wall vacuum insulation locks in temperature to preserve flavor and freshness. Unbreakable 18/8 stainless steel interior and exterior withstand the demands of everyday use. Drink lid opens with push button ease and locks closed for leak-proof travel. Light and pact design for effortless transport and storage. Bottle stays cool… |
|
|
Hello Kitty Stainless Vacuum Cup Bottle 0.35L Pink $25.00 ·Made of high quality stainless steel ·Capacity: 350 ML ·Help to maintain the temperature of the water ·White Hello Kitty patterns and characters printed on the body of the bottle around with strawberry patterns, very lovely ·Nice and practical item to own especially in winter… |
|
|
Eva Solo Coffee Funnel for Eva Solo Vacuum Jug and Vacuum Flask $50.15 The Eva Sola coffee funnel enables you to brew a good cup of coffee at home or when traveling, without the use a coffee machine. The funnel stands securely in the mouth of the Eva Solo vacuum jug or vacuum flask as you pour boiling water over it into the jug. The inner funnel can easily be removed to keep an eye on how much coffee has been brewed. Made of stainless steel and plastic. Dishwasher sa… |