Vật liệu sấy có năng suất 0.1 tấn/h, độ ẩm ban đầu W1=50%, độ ẩm cuối W2=10%. Trạng thái vào của không khí t=20 độ C,

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?