(a) Interpretation: Write an energy balance on the turbine and calculate the outlet stream temperature. Concept introduction: First law of Thermodynamics for a closed system. Δ u + Δ E k + Δ E p = Q − W The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system. The definitions of the symbols are Δ u = Change in internal energy, Δ E k = Change in kinetic energy, Δ E p = Change in potential energy, Q = Heat added to system and W = Work done by the system

Question

Four kilograms of carbon dioxide (CO2) is contained in a piston-cylinder assembly with a constant pressure of 2 bar and initial volume of 1m³. Energy is transferred by heat to the CO2 at a rate of 15 W for 2.5 hours. During this process, the specific internal energy increases by 10 kJ/kg. If no change in kinetic and potential energy occur. determine: (a) The heat transfer, in kJ. (b) The final volume, in m³.

Answer 1

Question

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Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

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Four kilograms of carbon dioxide (CO2) is contained in a piston-cylinder assembly with a constant pressure of 2 bar and initial volume of 1m³. Energy is transferred by heat to the CO2 at a rate of 15 W for 2.5 hours. During this process, the specific internal energy increases by 10 kJ/kg. If no change in kinetic and potential energy occur. determine: (a) The heat transfer, in kJ. (b) The final volume, in m³.

For each of the following processes that occur in an open steady state system, calcu- late the heat transfer to or from the system if it is isothermal. (a) 1000 g of O₂ are mixed with 1000 g of CO₂- (b) 900 kg of water are mixed with 63 kg of nitric acid. Data at SC: Compound Ĥ (kJ/kg) HNO3 (liquid) - 173.234 In 1 g mol H₂O -186.347 2 H₂O - 193.318 5 H₂O -201.962 10 H₂O -205.014 50 H₂O -205.978 100 H₂O -205.983

Q1) A constant volume tank contain 1 mole ofC7H14and 12 mole of O2 gas at a temperature of 25 °C and 1 bar. The contents of the tank is ignited and C7H14 is burned completely and final products temperature is found to be 1700 K. Determine the heat transfer during this process. ( take daltaHo = -47800 kJ/kg).

Answer 2

Question

100%

Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Expert Solution & Answer

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Answer 3

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Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Expert Solution & Answer

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Answer 4

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Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Expert Solution & Answer

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Answer 5

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Answer 6

Question

100%

Answer 7

Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 8

Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 9

Chapter 7, Problem 7.33P

Interpretation Introduction

(a)

Interpretation:

Write an energy balance on the turbine and calculate the outlet stream temperature.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 10

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 11

Interpretation Introduction

(b)

Interpretation:

Write an overall energy balance equation for the heater and calculate the required input to steam.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 12

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 13

Interpretation Introduction

(c)

Interpretation:

Verify that the overall energy balance on the units are satisfied.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 14

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 15

Interpretation Introduction

(d)

Interpretation:

Show that it is reasonable to neglect the change in kinetic energy for this unit.

Concept introduction:

First law of Thermodynamics for a closed system.

Δ u + Δ Ek+Δ Ep = Q−W

The right hand side of the equation gives the total energy transferred to the system and the left hand side gives gain in total energy of the system.

The definitions of the symbols are Δ u = Change in internal energy, Δ Ek = Change in kinetic energy, Δ Ep = Change in potential energy, Q = Heat added to system and W = Work done by the system

Answer 16

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Ch. 7 - A certain gasoline engine has an efficiency of...Ch. 7 - Prob. 7.2P Ch. 7 - Prob. 7.3P Ch. 7 - Prob. 7.4P Ch. 7 - Liquid ethanol is pumped from a large storage tank...Ch. 7 - Air at 300°C and 130 kPa flows through a...Ch. 7 - Prob. 7.7P Ch. 7 - Prob. 7.8P Ch. 7 - Prob. 7.9P Ch. 7 - Prob. 7.10P

Chapter 7 Solutions