Low-velocity steam (with negligible kinetic energy) enters an adiabatic nozzle at 300 C and 3 MPa. the steam leaves the nozzle at 2 MPa with a velocity of 400 m/s. the mass flow rate is 0.4 kg/s. determine the quality or temperature (C) of the steam leaving the nozzle and the exit area of the nozzle in mm^2.

the quality of the steam = 1.05

the temperature at   =  

the exit area of the nozzle =

Explanation:

Given that:

the inlet temperature of steam =

Inlet pressure of steam

Initial Velocity at the inlet = 0 m/s

Exit pressure of the steam

Exit velocity of steam

Mass flow rate m = 0.4 kg/s

Now, from steam tables at = and

At  

To determine the condition of the steam at exit ;

therefore,

Thus , the quality of the steam = 1.05

However, By using the energy balance equation to determine the temperature of the steam; we have:

From steam tables ; at enthalpy and ; the corresponding temperature

Thus, the temperature at   =  

Finally, to calculate the exit area of the nozzle in mm²

we use the mass flow rate relation:

Making A the subject of the formula; we have:

From the superheated steam tables at pressure ; specific volume

We have:

Thus, the exit area of the nozzle =

your answer is c! hope this : )

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)