[填空题]
An ideal air conditioner 5erc .2q l,uz ,qqn4cdkeeps the temperature inside a room at 21j;t p 0/bie5 0uzhyjtf ,8w2sc$^{\circ}\,C$ when the outside temperature is 32$^{\circ}\,C$. If 5.3 kW of power enters a room through the windows in the form of direct radiation from the Sun, how much electrical power would be saved if the windows were shaded so that the amount of radiation were reduced to 500 W? W
