(a) Interpretation: The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q ˙ ( kJ/h ) and the rate of steam produced in the boiler needs to be determined. Concept introduction: From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

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Answer 1

Question

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

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(5) The emissions from a manufacturing process contain gaseous pollutant that cause odors and fumes. The company plans to incinerate the 5,000 acfm exhaust stream. Estimate the volumetric (standard) flowrate of natural gas fuel required to increase the waste gas stream temperature from the initial 80°F to the required temperature of 2500°F. Energy (enthalpy) is transferred from the fuel to the gas. Neglect any possible heat losses in this process. The average net heating value of natural gas is 850 - 1050 Btu/std-ft. Include a diagram of the scenario.

The n-butane is converted into isobutane in an isomerization reactor, which operates isothermally at 149°C. Suppose that the reactor is fed with a mixture containing 93% mole of n-butane, 5% isobutane and 2% HCl at 149°C and that a 40% conversion of n-butane is achieved. How much heat in KJ/m3 (STP) of the feed, should be supplied or extracted from the reactor?

Answer 2

Question

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

Answer 6

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Answer 7

Chapter 9, Problem 9.71P

Interpretation Introduction

(a)

Interpretation:

The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat Q˙(kJ/h) and the rate of steam produced in the boiler needs to be determined.

Concept introduction:

From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.

Concept introduction:

In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.

Answer 10

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

Answer 11

Interpretation Introduction

(c)

Interpretation:

Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.

Concept introduction:

In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

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Answer 15

Ch. 9 - The standard heat of the reaction...Ch. 9 - Prob. 9.2P Ch. 9 - Prob. 9.3P Ch. 9 - The standard heat of the reaction...Ch. 9 - Prob. 9.5P Ch. 9 - Prob. 9.6P Ch. 9 - Prob. 9.7P Ch. 9 - Prob. 9.8P Ch. 9 - The standard heat of combustion of gaseous ethane...Ch. 9 - The standard heat of combustion (AH°) of liquid...

Solution Summary: The author explains the flowchart for the process. The composition of the gas existing the furnace, the heat and the rate of steam produced in the boiler needs to be determined.

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Chapter 9 Solutions