# Shakshat Virtual Lab

# INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI

- Theory
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# 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):**L**_{1} = 2237790 J/Kg

6) Total heat of dry steam at pressure P2 (Steam table):**H**_{2}= 2655180 Joule

7) Saturation temperature at P2 (Steam table):**T**_{2} = 99.94 ^{0}C

8) Dryness fraction from throttling calorimeter:**X**_{2} = (H_{2}+Cp(t1-t2)-Hw1)/L1= 0.976