Question:If we use 12mm thick special glass in the window of a room ,instead of 3mm thick ordinary glass,and the temperature inside the room is higher than the outside by 10degree C ,then how much heat per hour will be prevented from going out?Tbe total area of glass is 5m^2 and the thermal conductivity is 2*10^-4 kcal/sec.meter.degree C?

parmanand tiwari , 7 Years ago

Grade 12th pass