An 8mm thick glass window of a living room has an area of 2m2. If the...
An 8mm thick glass window of a living room has an area of 2m2. If the temperature in the upper one is 45 C and inside 25 C. What is the heat/time flow expressed in Watt that enters the room through the window? Kglass = 0.8W / m2
a) 4
b) 2000
c) 400
d) 40
e) 4000
Thank you.
Homework Answers
We know that heat current = Temperature difference*conductance
= (Toutside - Tinside)*Kglass *area/thickness
= (45-25)*0.8*2/0.008
= 4000 W
option e is correct
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