3.6 Determine the phase or phases in a system consisting ofH.O at the following conditions and sketch p-v and T-vdiagrams showing the location of each state.(a) p 10 bar, T = 179.9°C(b) p 10 bar, T= 150°C(c) T 100 C, p =(d) T 20°C, p(e) p 1 bar, T =-6°C.3.7 The following table lists temperatures and specific volumesof water vapor at two pressures:I= 0.5 bar.- 50 bar.p 1.5 MPap 1.0 MPa(m/kg)(m'/kg)T(C)T(C)0.13252000.20600.22750.24802000.14832402802402800.1627Data encountered in solving problems often do not fallexactly on the grid of values provided by property tablesand linear interpolation between adjacent table entriesbecomes necessary, Using the data provided here, estimate(a) the specific volume at T 240°C, p 1.25 MPa, in m'/kg.(b) the temperature at p 1.5 MPa, v 0.1555 m/kg, in °C.(c) the specific volume at T 220°C, p 1.4 MPa, in m'/kg.3.11 For each case, determine the specific volume at theindicated state. Locate the state on a sketch of the T-vdiagram.(a) Water at p 1 bar, T 20°C. Find u, in m'/kg.(b) Refrigerant 22 at p 40 lbl/in.', x = 0.6. Find v, in ft'lb.(c) Ammonia at p = 200 lbf/in., T= 195"F Find v, in ft'lb. 3.17 Determine the volume, in ft', of 2 lb of a two-phaseliquid-vapor mixture of Refrigerant 134A at 40°F with aquality of 20%. What is the pressure, in Ibf/in.?I3.18 A two-phase liquid-vapor mixture of ammonia has aspecific volume of 1.0 ft'/lb. Determine the quality if thetemperature is (a) 100°F, (b) 0°F. Locate the states on asketch of the T-v diagram.3.26 A closed, rigid tank contains a two-phase liquid-vapormixture of Refrigerant 22 initially at -20°C with a qualityof 50.36%. Energy transfer by heat into the tank occurs untilthe refrigerant is at a final pressure of 6 bar. Determine thefinal temperature, in °C. If the final state is in the superheatedvapor region, at what temperature, in °C, does the tankcontain only saturated vapor?3.27 Water vapor is cooled in a closed, rigid tank from 520°Cand 100 bar to a final temperature of 270C. Determine thefinal pressure, in bar, and sketch the process on T-v and p-vdiagrams3.35 Three kg of Refrigerant 22 undergoes a process for whichthe pressure-specific volume relation is pvThe initial state of the refrigerant is 12 bar and 60°C, andthe final pressure is 8 bar. Kinetic and potential energyeffects are negligible. Determine the work, in kJ, for the-0.8= constant.process

Question
Asked Oct 20, 2019
3.6 Determine the phase or phases in a system consisting of
H.O at the following conditions and sketch p-v and T-v
diagrams showing the location of each state.
(a) p 10 bar, T = 179.9°C
(b) p 10 bar, T= 150°C
(c) T 100 C, p =
(d) T 20°C, p
(e) p 1 bar, T =-6°C.
3.7 The following table lists temperatures and specific volumes
of water vapor at two pressures:
I
= 0.5 bar.
- 50 bar.
p 1.5 MPa
p 1.0 MPa
(m/kg)
(m'/kg)
T(C)
T(C)
0.1325
200
0.2060
0.2275
0.2480
200
0.1483
240
280
240
280
0.1627
Data encountered in solving problems often do not fall
exactly on the grid of values provided by property tables
and linear interpolation between adjacent table entries
becomes necessary, Using the data provided here, estimate
(a) the specific volume at T 240°C, p 1.25 MPa, in m'/kg.
(b) the temperature at p 1.5 MPa, v 0.1555 m/kg, in °C.
(c) the specific volume at T 220°C, p 1.4 MPa, in m'/kg.
3.11 For each case, determine the specific volume at the
indicated state. Locate the state on a sketch of the T-v
diagram.
(a) Water at p 1 bar, T 20°C. Find u, in m'/kg.
(b) Refrigerant 22 at p 40 lbl/in.', x = 0.6. Find v, in ft'lb.
(c) Ammonia at p = 200 lbf/in., T= 195"F Find v, in ft'lb.
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3.6 Determine the phase or phases in a system consisting of H.O at the following conditions and sketch p-v and T-v diagrams showing the location of each state. (a) p 10 bar, T = 179.9°C (b) p 10 bar, T= 150°C (c) T 100 C, p = (d) T 20°C, p (e) p 1 bar, T =-6°C. 3.7 The following table lists temperatures and specific volumes of water vapor at two pressures: I = 0.5 bar. - 50 bar. p 1.5 MPa p 1.0 MPa (m/kg) (m'/kg) T(C) T(C) 0.1325 200 0.2060 0.2275 0.2480 200 0.1483 240 280 240 280 0.1627 Data encountered in solving problems often do not fall exactly on the grid of values provided by property tables and linear interpolation between adjacent table entries becomes necessary, Using the data provided here, estimate (a) the specific volume at T 240°C, p 1.25 MPa, in m'/kg. (b) the temperature at p 1.5 MPa, v 0.1555 m/kg, in °C. (c) the specific volume at T 220°C, p 1.4 MPa, in m'/kg. 3.11 For each case, determine the specific volume at the indicated state. Locate the state on a sketch of the T-v diagram. (a) Water at p 1 bar, T 20°C. Find u, in m'/kg. (b) Refrigerant 22 at p 40 lbl/in.', x = 0.6. Find v, in ft'lb. (c) Ammonia at p = 200 lbf/in., T= 195"F Find v, in ft'lb.

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3.17 Determine the volume, in ft', of 2 lb of a two-phase
liquid-vapor mixture of Refrigerant 134A at 40°F with a
quality of 20%. What is the pressure, in Ibf/in.?
I
3.18 A two-phase liquid-vapor mixture of ammonia has a
specific volume of 1.0 ft'/lb. Determine the quality if the
temperature is (a) 100°F, (b) 0°F. Locate the states on a
sketch of the T-v diagram.
3.26 A closed, rigid tank contains a two-phase liquid-vapor
mixture of Refrigerant 22 initially at -20°C with a quality
of 50.36%. Energy transfer by heat into the tank occurs until
the refrigerant is at a final pressure of 6 bar. Determine the
final temperature, in °C. If the final state is in the superheated
vapor region, at what temperature, in °C, does the tank
contain only saturated vapor?
3.27 Water vapor is cooled in a closed, rigid tank from 520°C
and 100 bar to a final temperature of 270C. Determine the
final pressure, in bar, and sketch the process on T-v and p-v
diagrams
3.35 Three kg of Refrigerant 22 undergoes a process for which
the pressure-specific volume relation is pv
The initial state of the refrigerant is 12 bar and 60°C, and
the final pressure is 8 bar. Kinetic and potential energy
effects are negligible. Determine the work, in kJ, for the
-0.8
= constant.
process
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3.17 Determine the volume, in ft', of 2 lb of a two-phase liquid-vapor mixture of Refrigerant 134A at 40°F with a quality of 20%. What is the pressure, in Ibf/in.? I 3.18 A two-phase liquid-vapor mixture of ammonia has a specific volume of 1.0 ft'/lb. Determine the quality if the temperature is (a) 100°F, (b) 0°F. Locate the states on a sketch of the T-v diagram. 3.26 A closed, rigid tank contains a two-phase liquid-vapor mixture of Refrigerant 22 initially at -20°C with a quality of 50.36%. Energy transfer by heat into the tank occurs until the refrigerant is at a final pressure of 6 bar. Determine the final temperature, in °C. If the final state is in the superheated vapor region, at what temperature, in °C, does the tank contain only saturated vapor? 3.27 Water vapor is cooled in a closed, rigid tank from 520°C and 100 bar to a final temperature of 270C. Determine the final pressure, in bar, and sketch the process on T-v and p-v diagrams 3.35 Three kg of Refrigerant 22 undergoes a process for which the pressure-specific volume relation is pv The initial state of the refrigerant is 12 bar and 60°C, and the final pressure is 8 bar. Kinetic and potential energy effects are negligible. Determine the work, in kJ, for the -0.8 = constant. process

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Step 1

Note: We will answer the first 3 subparts of first question (3.6) since the exact question is not specified. Please submit a new question specifying the question no. you’d like answered.

PV and TS graph for H2O

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Step 2

3.6 (a)

Given:

P=10 bar

T=179.9 oC

State of the water is liquid. Answer

т
Constant temperature lines
Constant pressure lines
V
V
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т Constant temperature lines Constant pressure lines V V

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Step 3

3.6 (b)

Given:

P=10 bar

T=150 oC

The state of ...

P
т
Constant temperature lines
Constant pressure lines
V
V
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P т Constant temperature lines Constant pressure lines V V

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