Awind turbine system has the following specifications: diameter: 45 m rated power 700 kw at the wind speed of 12 m/s turbine speed 1500 rpm determine the swept area of the wind turbine. a)- 1640 m^2 b)- 1690 m^2 c)- 1590 m^2 d)- 1540 m^2

Consider a 1.2 meter high and 2 meter wide glass window whose thickness is 6 mm and thermal conductivity is 0.78 w/m °c. the room temperature is maintained at 24 °c, while the outdoor temperature is -5 °c. the convective heat transfer coefficients on the inner and outer surfaces of the window are 10 w/m2 °c and 25 w/m2 °c respectively. (a) draw the thermal resistance network, etermine the steady rate of heat transfer t e glass window (c) determine the temperature of the inner surface of the window