(a) Interpretation: The rate at which heat is transferred from the condenser is to be calculated. Concept introduction: The rate of heat transfer is calculated as: Q ˙ = n ˙ Δ H ^ .......(1) For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus, Q ˙ g a i n = − Q ˙ l o s t .......(2)

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Answer 1

Question

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

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The power out of an adiabatic steam turbine is 5 MW and the steam enters turbine at 2 MPa and velocity of 50 m/s, specific enthalpy (h) of 3248 kJ/kg. The elevation of the inlet is 10 m higher than at the datum. The vapor mixture exits at 15 kPa and a velocity of 180 m/s, specific enthalpy (h) of 2361.01 kJ/kg. The elevation of the exit is 6 m higher than at the datum. Let g = 9.81 m/s². Assuming the ideal gas model and R = 0.462 KJ/(kg.K). The steam specific heat ratio is 1.283. Calculate:

Answer 2

Question

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

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Answer 3

Question

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

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Answer 4

Question

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

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Answer 5

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Answer 6

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Answer 7

Chapter 8, Problem 8.43P

Interpretation Introduction

(a)

Interpretation:

The rate at which heat is transferred from the condenser is to be calculated.

Concept introduction:

The rate of heat transfer is calculated as:

Q˙=n˙ΔH^ .......(1)

For an adiabatic system, the heat lost by one component in the system is the heat gained by another component in that system. Thus,

Q˙gain=−Q˙lost .......(2)

Answer 8

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the lower rate than that calculated in part (a).

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The state of the product stream is to be determined if the heat is transferred at the higher rate than that calculated in part (a). Also, a phase diagram is to be drawn.

Concept introduction:

Removal of heat from any vapor at its normal boiling point leads to the condensation of the vapor to liquid phase until all the vapor is condensed and further removal of heat leads to the cooling of the liquid. If less heat is removed from the vapor, then partial condensation happens, and vapor and liquid coexist at its normal boiling point.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 8 - 8.1. The specific internal energy of formaldehyde...Ch. 8 - Prob. 8.2P Ch. 8 - Prob. 8.3P Ch. 8 - Prob. 8.4P Ch. 8 - Prob. 8.5P Ch. 8 - 8.6. Table B.7 of Appendix B gives the following...Ch. 8 - Prob. 8.7P Ch. 8 - Two formulas for the heat capacity of CO are given...Ch. 8 - 8.9. Table B.2 lists values of the heat capacity...Ch. 8 - Prob. 8.10P

Solution Summary: The author explains the rate at which heat is transferred from the condenser.

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