Two rooms, each a cube 4 m per side, share a 13.9-cm thick brick wall. Because of a number of 100-W lightbulbs in one room, the

Question

Two rooms, each a cube 4 m per side, share a 13.9-cm thick brick wall. Because of a number of
100-W lightbulbs in one room, the air is at 20 deg C, while in the other room it is at 9 deg C. How
many of the 100-W bulbs are needed to maintain the temperature difference across the wall? Kprick
= 0.84 W/m.K
Round your answer to 2 decimal places.

Kunduz · Accepted Answer

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