ThermoNet

Example Problems

Tutorial 1 Examples: Thermodynamic Concepts and Terminology

Tutorial 2 Examples: Thermodynamic Properties of Pure Substances

Tutorial 3 Examples: Energy, Work, and Heat

Tutorial 4 Examples: The First Law: Energy Balance Analysis

Tutotial 5 Examples: Reversible and Irreversible Processes

Tutorial 6 Examples: Entropy and the Second Law

Tutorial 7 Examples: Second Law Applications

Tutorial 8 Examples: Analysis of Thermodynamic Cycles

Tutorial 9 Examples: Gas Power Systems

Tutorial 10 Examples: Vapor Power Systems

Tutorial 11 Examples: Refrigeration and Heat Pumps

Tutorial 1 Examples: Thermodynamic Concepts and Terminology

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Example #:	Description
1-1	Force and acceleration: SI units
1-2	Force and acceleration: SI units
1-3	Force and acceleration: SI units
1-4	Specific volume
1-5	Kinetic energy, potential energy, and g_c
1-6	Pressure units
1-7	Pressure of gas in a cylinder/piston system
1-8	Temperature units
1-9	Unit conversion: USCS to SI

Tutorial 2 Examples: Thermodynamic Properties of Pure Substances

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Example #:	Description
2-1	Linear interpolation of tabulated data
2-2	Phase and quality of water at different states
2-3	Property tables: H₂O
2-4	Property changes in a process: H₂O
2-5	Enthalpy change for a process: H₂O
2-6	Determining properties of a compressed liquid
2-7	Determining properties of steam at several states
2-8	Determing properties at the end of a process
2-9	Enthalpy change for a process: H₂O
2-10	Ideal gas equation: helium
2-11	Ideal gas equation in a heating process: oxygen
2-12	Ideal gas equation: air
2-13	Validity of the ideal gas equation
2-14	Using the Z chart for a process
2-15	Find v for gas using the Z chart
2-16	Using the Z chart for a process
2-17	Determining enthalpy changes: nitrogen

Tutorial 3 Examples: Energy, Work, and Heat

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Example #:	Description
3-1	Work for heating H2O in cylinder with spring
3-2	Work for compressing air in cylinder with cooling
3-3	Work for compressing a gas along a specified P-V path
3-4	Work for compressing a gas in a cylinder with a spring
3-5	Work for an isobaric process: H2O
3-6	Work with cooling for H2O in a cylinder
3-7	Work with heating of H2O in a cylinder
3-8	Work with cooling for H2O in a cylinder
3-9	Work with heating of H2O in a cylinder
3-10	Heat transfer to H20 in a cylinder with a spring

Tutorial 4 Examples: The First Law: Energy Balance Analysis

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Example #:	Description
4-1	Heat transfer to H₂O in cylinder
4-2	Heat transfer and work for H₂O in cylinder
4-3	Heat transfer and work for H₂O in cylinder
4-4	Heat transfer in an isobaric process for an ideal gas
4-5	Heat transfer between solid blocks
4-6	Cooling of a tank containing air
4-7	Heat transfer between solid blocks
4-8	Expansion of steam in a container
4-9	Work and heat tranfer for gases in a cylinder
4-10	Work and heat tranfer for a cycle
4-11	Work and heat transfer for air in a cylinder
4-12	Filling or emptying of a tank with water
4-13	Filling of a conical tank with water
4-14	Steam lift (unsteady flow unsteady state)
4-15	Filling of a helium balloon
4-16	Charging of an air tank with heat transfer
4-17	Flow splitter with H₂O
4-18	Mixing box: air
4-19	Multiflow system with work and heat transfer: H₂O
4-20	Ammonia diffuser
4-21	Steam nozzle with heat transfer
4-22	Adiabatic air nozzle
4-23	Flow through a valve: air and steam
4-24	Air compressor
4-25	Oxygen compressor
4-26	Adiabatic water pump
4-27	Adiabatic water pump
4-28	Adiabatic air turbine
4-29	Steam turbine with heat transfer
4-30	Steam boiler and turbine
4-31	Steam turbine with heat transfer
4-32	Water-cooled steam condensor
4-33	Air-water heat exchanger

Tutotial 5 Examples: Reversible and Irreversible Processes

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Example #:	Description
5-1	Reversible and irreversible processes

Tutorial 6 Examples: Entropy and the Second Law

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Example #:	Description
6-1	Entropy increase concepts
6-2	Entropy increase concepts
6-3	Entropy changes for system and surroundings
6-4	Entropy change for air
6-5	Isothermal reversible work and heat transfer for air
6-6	Isothermal work for air: reversible vs. irreversible

Tutorial 7 Examples: Second Law Applications

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Example #:	Description
7-1	Control mass with s_gen: ideal gas
7-2	Control mass (piston/cylinder): ideal gas
7-3	Control mass with s_gen: H₂O
7-4	Control mass with 1st Law: H₂O
7-5	Control mass (piston/cylinder), reversible or irreversible: H₂O
7-6	Control mass, reversible and adiabatic: H₂O
7-7	Control mass, reversible, process diagrams
7-8	Unsteady flow: argon
7-9	Steady flow: H₂O
7-10	Reversible adiabatic nozzle: air
7-11	Reversible adiabatic 2-stage compressor: air
7-12	Discharge of a tank, unsteady: air
7-13	Control volume, turbine and compressor: H₂0 and air
7-14	Control volume, turbine efficiency: H₂0
7-15	Control volume, turbine and pump: air and H₂0
7-16	Control volume, turbine with s_gen and T-s diagram: air

Tutorial 8 Examples: Analysis of Thermodynamic Cycles

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Example #:	Description
8-1	Powerplant energy balance
8-2	External combustion engine efficiency
8-3	Carnot heat engine
8-4	Carnot solar powerplant
8-5	Carnot solar powerplant
8-6	Carnot solar powerplant
8-7	Freezer COP
8-8	Heat pump COP
8-9	Refrigerator and heat pump COP
8-10	Validity of claims: power and heat pump cycles

Tutorial 9 Examples: Gas Power Systems

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Example #:	Description
9-1	Air standard analysis
9-2	Otto cycle- air standard
9-3	Otto cycle- air standard
9-4	Otto cycle- air standard with engine modifications
9-5	Diesel cycle- air standard
9-6	Diesel cycle- air standard
9-7	Diesel cycle- air standard
9-8	Brayton cycle- air standard
9-9	Brayton cycle- air standard
9-10	Brayton cycle- nonideal with reheat
9-11	Brayton cycle- nonideal with intercooling
9-12	Brayton cycle- nonideal with reheat and intercooling
9-13	Brayton cycle- jet engine

Tutorial 10 Examples: Vapor Power Systems

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Example #:	Description
10-1	Rankine cycle- no superheat
10-2	Rankine cycle with superheat
10-3	Rankine cycle with superheat- nonideal
10-4	Rankine cycle with reheat- ideal
10-5	Rankine cycle with reheat- nonideal

Tutorial 11 Examples: Refrigeration and Heat Pumps

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Example #:	Description
11-1	Vapor compression refrigeration, R-134a- ideal
11-2	Vapor compression refrigeration, R-134a- ideal
11-3	Vapor compression refrigeration, R-134a- ideal
11-4	Vapor compression refrigeration, R-134a- nonideal
11-5	Vapor compression refrigeration, ammonia- nonideal