Calculate the heat transfer rate through a 12-ft2 window with U = 0.2 ./0 1·3/4·°F . The indoor and outdoor temperatures are 68oF and 10oF, respectively. Compare the results of this exercise with results of Problem 5.10. How much energy will be saved if three windows with U = 0.8 ./0 1·3/4·°F are replaced with three windows with U = 0.2 ./0 1·3/4·°F for a home in a location with annual degree-days of 6,200?

What will be an ideal response?


Environmental & Atmospheric Sciences

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A skydiver falls toward Earth. The attraction of Earth on the skydiver pulls the skydiver down. What is the reaction to this force?

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Environmental & Atmospheric Sciences