Experimental Calculation

Temperature after throttling : T1

Gauge pressure of Steam Generator : P1

Gauge Pressure before Throttling : P

Manometer difference : H

Volume of moisture collected : W

Volume of dry steam copllected after throttling: Wd

Observations:

Now let me perform calculation for 2nd reading.

1) Dryness fraction of separating calorimeter:

X1 = Wd/(W+Wd) = 0.61

2) Pressure of superheated steam: P2= 101.325 + 13.6*9.81*18/1000 = 103.73 KPa

3) Specific heat of steam: C_p = 2081.6645 J/Kg

4) Sensible heat of water at pressure P (From steam table):H_W1 = 449961 Joule

5) Latent heat of wet steam entering throttling calorimeter (Steam Table):L₁ = 2237790 J/Kg

6) Total heat of dry steam at pressure P2 (Steam table):H₂= 2655180 Joule

7) Saturation temperature at P2 (Steam table):T₂ = 99.94 ⁰C

8) Dryness fraction from throttling calorimeter:X₂ = (H₂+Cp(t1-t2)-Hw1)/L1= 0.976