Citrus Chiffon Cake

• 8 egg whites at room temperature
• 5 egg yolks at room temperature
• 300 gr granulated sugar
• 280 gr sifted cake flour self rising (not)
• 180 ml orange juice (fresh)
• 120 ml vegetable oil
• 14 gr baking powder
• 14 gr confectioners sugar
• 6 gr orange peel (grated)
• 4 gr lemon peel (grated)