A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0-

Physics
Tutor: None Selected Time limit: 1 Day

A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0-cm-thick sealed layer of air in between.
(a) If the inside surface temperature is 20.8°C and the outside surface temperature is 0.0°C, determine the rate of energy transfer through 1.25 m2 of the window. 
   W 

(b) Compare your answer to (a) with the rate of energy transfer through 1.25 m2 of a single 1.0-cm-thick pane of glass. Disregard surface air layers. (Find the rate of energy transfer.) 
 kW
Jun 20th, 2015

Thank you for the opportunity to help you with your question!

ΔxGlass=0.0050, kGlass=0.84, ΔxAir=0.010, kAir=0.0234, ΔT=20.8-0, WindowArea=1.25

HeatLossPerSecond=[1.25*20.8]/(2*0.0050/0.84 + 0.010/0.0234)=26/0.439255=59.19

HeatLossPerSecond1=[1.25*20.8]/(2*0.0050/0.84)=26/0.01190476=2.18

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 20th, 2015

thanks


Jun 20th, 2015

you are welcome

Jun 20th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Jun 20th, 2015
...
Jun 20th, 2015
Feb 22nd, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer