Homework Statement
Steam is raised as saturated steam at 6 bar (g) and supplied to the first ( high pressure ) piston. The steam then exhausts from piston 1 at 3 bar (g).
The steam is thought to expand adiabatically in accordance with
PV^( 135 .1)= Constant
Given the initial volume is...
can u please provide me a web page to look at the specific volume of saturated liquid water at 9 MPa? or a good steam tables web page to look at it?
I have books with steam tables, steam tables in pdf and really DOES NOT APPEAR LIQUID WATER.
WHAT APPEARS ITS COMPRESSED WATER.?IS THAT IT?
b) USING THE STEAM TABLES
P= 1 MPA, V= 0.264 Vactual=0.25790 Z=PVactual/RT=0.9744
SO: CONCLUSION: As seen the Ideal Gas Assumption is very good for this case. The water vapour is acting ideally
The IDEAL GAS LAW EQUATION: PV=nRT
the pressure is always in PA or Kpa. I diveded by pressure to calculate the Volume
Yes, the gas constant is in KJ/kg like I wroted it.
looking at the steam tables:
at 90 atm= 9MPA specific saturated steam volume is =0.001418metres cube/kg
In my steam tables does not appear saturated liquid water volme. How can I find it?
First, I convert the pressure given to bar.
so: 9 atmx (1.01325bar)/1atm = 91.1925 bar
I look these temperature in the steam table for specific volume of saturated steam and saturated liquid water, and these temperature does not appear.
so I need to interpolate.How can I do it?
The problem doesn´t mention if dry stream and liquid water are present together.
The problem only provides me rate of pipe 100kg/s. The quality x=80 % =0.80
and the pressure= 90 atm. Determine the volumetric flows of dry steam and liquid water.
do u know any formula to find the volumetric...
It doesn´t say. I think it will be gauge pressure
units of steam tables? vg= metres cube/kg
If u want to have a look, Steam tables attached
By the way, I always do everything different from everybody else, that why I´m different
Steam flows down a pipe at a rate of 100kg/s. The steam flow has a quality of
80% at 90 atm. Determine the volumetric flows of dry steam and liquid water.