1. Engineering
  2. Mechanical Engineering
  3. 12 the inner and outer surfaces temperatures of a 05cm...

Question: 12 the inner and outer surfaces temperatures of a 05cm...

Question details

12. The inner and outer surfaces temperatures of a 0.5-cm thick 2-m x 2-m window glass in winter are 10°C and 3°C, respectively, if the thermal conductivity of the glass is 0.78 W/m.K, determine the amount of heat loss through the glass over a period of 5 h. what would your answer be if the glass were 1 cm thick? 13. Hot air at 80°C is blown over a 2-m x 4-m flat surface at 30°C. If the average convection heat transfer coefficient is 55 W/m2 K, determine the rate of heat transfer from the air to the plate, in kW 14. The inner and outer glasses of a 1.2-m x 1.2-m double pane window are at 15°C and 90C, respectively. If the 6-mm space between the two glasses is filled with still air determine the rate of heat transfer through the window.

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution