Thermal Conductivity Of Ceramic Mug

The small cross section of the handle reduces heat flow between the liquid and the hand.

Thermal conductivity of ceramic mug. Ceramics follow metals and then comes glass. Rmug l ka rmug l ka air l 1 16 paper cup which mug is the best choice. Thermal circuitry and coffee mugs other considerations k thermal conductivity k 1 0 w mk which coffee cup is the best. This makes it an ideal material for use in electrical and thermal management situations.

Use the principles of thermal circuitry to determine which mug is best to keep. Hexagonal boron nitride is a chalky white material and is often called white graphite it has generally poor mechanical properties. Ceramic mugs being made of ceramic have a higher durability. Oneisall ceramic travel mug 380ml 13 4oz double wall thermal ceramic cup leakproof office tumbler insulated mug white 4 3 out of 5 stars 43 15 65 15.

The thermal conductivity of a ceramic mug is approximately 3 8 w mk while the thermal conductivity of the glass mug is approximately 1 1 w mk. It s useful to also compare metal cups. Most of the ceramics have low thermal conductivity at room temperature but there are ceramics which have very high thermal conductivity. Metals have the highest thermal conductivity in general.

The answer depends on the ceramic you choose. Aluminum nitride has a very high thermal conductivity while being an electrical insulator. The problem with the thermal conductivity of ceramics is the dependence on the composition grain size and manufacturing process which make it rather difficult to obtain a reliable value from literature only. Looking at the values quoted in various handbooks papers and data sheets two things are observed.

Among fine ceramics also known as advanced ceramics some materials possess high levels of conductivity and transfer heat well while others possess low levels of conductivity and transfer less heat. Assume mug is made of porcelain or ceramic of similar thermal conductivity. This high thermal conductivity relates to a relatively fast temperature equilibrium between the mug and the liquid meaning the liquid will cool off rather quickly. Because i m lazy assume no heat loss out of the top.

Finally the handle of a mug keeps the hand away from the hot sides of a mug. Assume coffee is at 140 f.