The brick wall (of thermal conductivity 1.15 W/m · ◦ C) of a building has dimensions of 2.8 m by 9 m and is 24 cm thick. How much heat flows through the wall in a 5.5 h period when the average inside and outside temperatures are, respectively, 19◦C and 5◦C? Answer in units of MJ.
"Q=2 .1~MJ."
Comments
Leave a comment