A typical winter day in Reno, Nevada (39o N latitude), is cold but sunny, and thus the

Question:

A typical winter day in Reno, Nevada (39o N latitude), is cold but sunny, and thus the solar heat gain through the windows can be more than the heat loss through them during daytime. Consider a house with double-door-type windows that are double paned with 3-mm-thick glasses and 6.4 mm of air space and have aluminum frames and spacers. The overall heat transfer coefficient for this window is 4.55 W/m2·oC. The house is maintained at 22oC at all times. Determine if the house is losing more or less heat than it is gaining from the sun through an east window on a typical day in January for a 24-h period if the average outdoor temperature is 10oC.