Question 1 A window in a home is 3 feet wide and 5 feet tall. The R-value
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Question 1
A window in a home is 3 feet wide and 5 feet tall. The R-value of the window is 3.0 Ft 2 •F•hr/Btu. The temperature inside this house during January is 68 F and the average outdoor temperature is 23 F. Calculate the area of the window (square feet) and the difference in temperature.
A | | 9 Ft 2 , 35 degrees |
B | | 15 Ft 2 , 35 degrees |
C | | 8 Ft 2 , 45 degrees |
D | | 16 Ft 2 , 45 degrees |
E | | 15 Ft 2 , 45 degrees |
F | | 20 Ft 2 , 45 degrees |
Question 2
Continuing with question one (above), calculate the heat loss rate through the window in Btu per hour
A | | 675 Btu/hr |
B | | 600 Btu/hr |
C | | 300 Btu/hr |
D | | 0.00444 Btu/hr |
E | | 225 Btu/hr |
F | | 120 Btu/hr |
Question 3
Continuing with question one (above), calculate the heat loss rate through the window in Watts.
A | | 767.9 Watts |
B | | 100 Watts |
C | | 88 Watts |
D | | 40 Watts |
E | | 65.9 Watts |
F | | 0.001 Watts |
Question 4
Continuing with question one (above), calculate the total heat loss through the window for the whole month of January expressed in kWh (There are 744 hours in January.)
A | | 49 kWh |
B | | 49,000 kWh |
C | | 147 kWh |
D | | 29 kWh |
E | | 147,000 kWh |
F | | 67 kWh |
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