Module 3 :
Lecture 11 : Phase-Change Process of Pure Substances
 



Steam Tables

Two Saturated steam tables

  • Saturated Steam Pressure Table
  • Saturated Steam Temperature Table

Similar tables can exist for any pure substance (e.g. Freon 12)

 

Saturated Steam: Pressure Table (kJ/kg)

P

T

  (m3/kg)

h (kJ/kg)

s (kJ/kg k)

(bar)

(0c)

0.01

6.98

 

 

 

 

 

 

0.05

32.90

 

 

 

 

 

 

0.10

45.83

 

 

 

 

 

 

.

.

 

 

 

 

 

 

.

.

 

 

 

 

 

 

.

.

 

 

 

 

 

 

2.0

120.23

 

 

 

 

 

 

In this table pressure is selected as the independent variable.

 

Saturated Steam: Temperature Table

T

P

h

s

( oc)

(bar)

0

6.1×10-3

 

 

 

 

 

 

2

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

.

.

 

 

 

 

 

 

.

.

 

 

 

 

 

 

.

.

 

 

 

 

 

 

374.15

221.2

 

 

 

 

 

 

 

Superheated Steam Table

P(bar) (0.2)

Temperature (oc)

 

100

200

300

400

 

(m3/kg)

8.5

 

 

 

 

h (kJ/kg)

2686

 

 

 

 

s (kJ/kg k)

8.126

 

 

 

 

 

 

 

 

 

 

The values for a given condition are to be evaluated through interpolation.