A10m x 15m house is built on a 14 cm thick slab. what is the heat loss rate through the slab if the ground temperature is 6 degrees celsius while the interior of the house is 21 degrees celsius?

By time unit, the heat loss is 2571.43 W, approximately.

Explanation:

In this case, heat loss by conduction is given by

where Q stands for heat, t for time, k for the slab's conductivity, A for the area and T for temperature. Assuming a thermal conductivity of 0.16 W/m°C, we have

. Recall the units are Watts.

statement #3 on andre"s list is false.