In an energy balance around the distillation column, the properties of the incoming (wet) steam need to be characterized. It is known to be a mixture of saturated vapor and liquid. The pressure in the steam pipe is around 15 psi. Little amount of steam is bled through a throttle. After throttling to atmospheric pressure, only water vapor emerges with a temperature around 100 C.

(a) Temperature in the steam pipe?

(b) What is the quality of the steam?