ENGR 2213 Thermodynamics

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ENGR 2213 Thermodynamics

• F. C. Lai
• School of Aerospace and Mechanical
• Engineering
• University of Oklahoma

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Review
Critical point
?
T
Superheated vapor
Subcooled liquid
Saturated mixture
Saturated vapor line
Saturated liquid line
v
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Thermodynamic Property Tables of Water
? Saturated Water Temperature Table (A-4) ?
Saturated Water Pressure Table (A-5) ?
Superheated Vapor (A-6) ? Compressed Liquid
(A-7)
Linear interpolation is required when the states
encountered in problems do not fall exactly on
the values provided by the tables.
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Saturated Mixture
? For a given T, p psat
? For a given p, T Tsat
? For a given v, vf lt v lt vg
p
T
Tsat
?
?
vf
vg
v
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Saturated Mixture
? For a given T, p psat
? For a given p, T Tsat
? For a given v, vf lt v lt vg
p
psat
?
?
T
vf
vg
v
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Compressed Liquid (Subcooled Liquid)
? For a given T, p gt psat
subcooled liquid
? For a given p, T lt Tsat
? For a given v, v lt vf
p
T
Tsat
?
vf
v
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Compressed Liquid (Subcooled Liquid)
compressed liquid
? For a given T, p gt psat
? For a given p, T lt Tsat
? For a given v, v lt vf
p
psat
?
vf
v
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Superheated Vapor
superheated vapor
? For a given p, T gt Tsat
? For a given T, p lt psat
? For a given v, v gt vg
p
T
Tsat
?
vg
v
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Superheated Vapor
? For a given p, T gt Tsat
? For a given T, p lt psat
? For a given v, v gt vg
p
psat
?
vg
v
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State of Water
T (ºC) P (kPa) v (m3/kg) Phase description
50 4.16
200 saturated vapor
250 400
110 600