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