A Styrofoam box, used to keep drinks cold at a picnic, has total wall area (including the lid) of 0.8m^(2) and wall thickness 2 cm. It is filled with ice, water and coca-cola at 0^(0)C. What is the rate of heat flow between the box and the surrounding and in which direction it is flowing ? Take atmospheric temperature as 30^(0)C. Thermal conductivity of Styrofoam is 0.01 W/m-K.

A Styrofoam box, used to keep drinks cold at a picnic, has total wall

1.	A Styrofoam box, used to keep drinks cold at a picnic, has total wall area (including the lid) of 0.8m^(2) and wall thickness 2 cm. It is filled with ice, water and coca-cola at 0^(0)C. What is the rate of heat flow between the box and the surrounding and in which direction it is flowing ? Take atmospheric temperature as 30^(0)C. Thermal conductivity of Styrofoam is 0.01 W/m-K.
Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/12-269062" style="font-weight:bold;" target="_blank" title="Click to know more about 12">12</a> <a href="https://interviewquestions.tuteehub.com/tag/w-729065" style="font-weight:bold;" target="_blank" title="Click to know more about W">W</a>, Out of <a href="https://interviewquestions.tuteehub.com/tag/box-401352" style="font-weight:bold;" target="_blank" title="Click to know more about BOX">BOX</a> <br/>12W, Into the box <br/>18W, Out of box <br/>18W, Into the box </p>Answer :B</body></html>