Problem (5): Consider a house that has a 10m20m base and a 4m-high wall. The two 10m4m walls have no windows (Consider R-values of 2.31m2C/W ). The third wall has five windows made of 0.5cm-thick glass (k=0.78W/mC),1.2m1.8m in size (Consider total R-Value of 0.00058C/W). The fourth wall has the same size and number of windows, but they are double-paned with a 1.5cm-thick stagnant air space (k=0.026W/mC ) enclosed between two 0.5 -cm-thick glass layers (Consider total R-Value of 0.020717C/W ). The thermostat in the house is set at 22C and the average temperature outside at that location is 8C during the seven-month-long heating season. Taking the heat transfer coefficients at the inner and outer surfaces of the house to be 7 and 15W/m2.C, respectively, determine the average rate of heat transfer through each wall. If the house is electrically heated and the price of electricity is $0.08/kWh, determine the amount of money this household will save per heating season by converting the single-pane windows to double-pane windows