NTISthis.com

Evidence Guide: MARL011 - Apply basic principles of marine engineering thermodynamics

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MARL011 - Apply basic principles of marine engineering thermodynamics

What evidence can you provide to prove your understanding of each of the following citeria?

Explain common thermodynamic principles

  1. Desired System International (SI) units applicable to thermodynamic calculations are developed
  2. Basic properties of fluids are outlined
  3. Gauge pressure is distinguished from absolute pressure
  4. Temperature is defined and temperature scales are outlined
  5. Calculations are performed by applying formulae for work, power and efficiency
Desired System International (SI) units applicable to thermodynamic calculations are developed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Basic properties of fluids are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Gauge pressure is distinguished from absolute pressure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Temperature is defined and temperature scales are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculations are performed by applying formulae for work, power and efficiency

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate properties of gas during expansion and compression

  1. Calculations are performed by applying Boyle’s, Charles’s and combined gas law
  2. Gas equation is derived and applied to gas process calculations
  3. Specific heat of gases and the relationship between Cp, Cv, R and Gamma is defined
  4. Heat transfer is calculated for constant pressure and constant volume processes
  5. Isothermal, adiabatic and polytropic processes are outlined and properties of gases after expansion and compression including the effects of turbocharging are calculated
  6. Work required to compress gases is illustrated and calculated
Calculations are performed by applying Boyle’s, Charles’s and combined gas law

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Gas equation is derived and applied to gas process calculations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specific heat of gases and the relationship between Cp, Cv, R and Gamma is defined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Heat transfer is calculated for constant pressure and constant volume processes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Isothermal, adiabatic and polytropic processes are outlined and properties of gases after expansion and compression including the effects of turbocharging are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work required to compress gases is illustrated and calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain methods of heat transfer

  1. Different forms of heat transfer and their application to marine systems are explained
  2. Heat transfer through flat layers is calculated
  3. Purpose of insulation is explained
Different forms of heat transfer and their application to marine systems are explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Heat transfer through flat layers is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Purpose of insulation is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain enthalpy and apply to mixture calculations

  1. Heat energy is defined
  2. Fundamental formula for heat energy transfer is developed
  3. Specific heat and its application are identified
  4. Enthalpy and change of phase are outlined
  5. Heat mixture problems involving water equivalent, ice, water and steam are solved
  6. Specific heat of materials are calculated
  7. Latent heat and dryness fraction are identified
  8. Steam tables are used to find values of enthalpy for water, saturated and superheated steam and dryness fraction
  9. Temperature/enthalpy diagram is constructed from steam table data
Heat energy is defined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fundamental formula for heat energy transfer is developed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specific heat and its application are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Enthalpy and change of phase are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Heat mixture problems involving water equivalent, ice, water and steam are solved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specific heat of materials are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Latent heat and dryness fraction are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Steam tables are used to find values of enthalpy for water, saturated and superheated steam and dryness fraction

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Temperature/enthalpy diagram is constructed from steam table data

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain steam plants and calculate thermal efficiency

  1. Basic steam plant cycles are sketched and function of each component is outlined
  2. Steam cycles on a temperature/enthalpy diagram are illustrated
  3. Effects of superheating and under cooling are clarified
  4. Calculations are performed for heat supplied, rejected, work and thermal efficiency of a steam plant
  5. Methods of improving cycle efficiency are outlined
Basic steam plant cycles are sketched and function of each component is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Steam cycles on a temperature/enthalpy diagram are illustrated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Effects of superheating and under cooling are clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculations are performed for heat supplied, rejected, work and thermal efficiency of a steam plant

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Methods of improving cycle efficiency are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain operation of internal combustion engine cycles

  1. Operating principles of two stroke and four stroke internal combustion engines are outlined
  2. Differentiation is made, by use of a pressure/volume diagram, between Otto, Diesel and Dual combustion cycles
  3. Mean effective pressure is calculated from an indicator diagram
  4. Indicated power formula is developed and related calculations are solved
  5. Specific fuel consumption is defined and calculated
  6. Ideal cycle and air standard efficiency is defined
Operating principles of two stroke and four stroke internal combustion engines are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Differentiation is made, by use of a pressure/volume diagram, between Otto, Diesel and Dual combustion cycles

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Mean effective pressure is calculated from an indicator diagram

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Indicated power formula is developed and related calculations are solved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specific fuel consumption is defined and calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ideal cycle and air standard efficiency is defined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain operating cycle of reciprocating air compressors

  1. Pressure/volume diagram is used to describe operating cycle of single stage reciprocating air compressors
  2. Mass of air delivered by single stage reciprocating air compressors is calculated
  3. Clearance volume and its effect on volumetric efficiency is outlined, and volumetric efficiency is calculated
  4. Work per cycle for isothermal and polytropic processes is calculated
Pressure/volume diagram is used to describe operating cycle of single stage reciprocating air compressors

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Mass of air delivered by single stage reciprocating air compressors is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clearance volume and its effect on volumetric efficiency is outlined, and volumetric efficiency is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work per cycle for isothermal and polytropic processes is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain operating cycle of refrigeration and air conditioning plant

  1. Principle of refrigeration is outlined
  2. Temperature/enthalpy and pressure/enthalpy diagrams are compared
  3. Refrigerants used in refrigeration and air conditioning machines are identified
  4. Refrigeration effect and plant capacity are defined
  5. Refrigeration tables are used to calculate refrigeration effect and condition of vapour after expansion
  6. Operating cycle of self-contained and centralised air conditioning systems are outlined and compared
  7. Relative humidity is defined and key features of a psychrometric chart are outlined
Principle of refrigeration is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Temperature/enthalpy and pressure/enthalpy diagrams are compared

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigerants used in refrigeration and air conditioning machines are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigeration effect and plant capacity are defined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Refrigeration tables are used to calculate refrigeration effect and condition of vapour after expansion

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operating cycle of self-contained and centralised air conditioning systems are outlined and compared

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Relative humidity is defined and key features of a psychrometric chart are outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apply linear, superficial and volumetric expansion equations to calculate expansion of liquids and metals

  1. Expansion processes for metals is defined
  2. Coefficient of linear expansion is outlined
  3. Linear expansion is applied to calculate machinery clearances and to shrink fit allowances
  4. Superficial and volumetric expansion of solids is calculated and recorded
  5. Apparent expansion of liquids in tanks is calculated and recorded
Expansion processes for metals is defined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Coefficient of linear expansion is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Linear expansion is applied to calculate machinery clearances and to shrink fit allowances

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Superficial and volumetric expansion of solids is calculated and recorded

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apparent expansion of liquids in tanks is calculated and recorded

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Explain common thermodynamic principles

1.1

Desired System International (SI) units applicable to thermodynamic calculations are developed

1.2

Basic properties of fluids are outlined

1.3

Gauge pressure is distinguished from absolute pressure

1.4

Temperature is defined and temperature scales are outlined

1.5

Calculations are performed by applying formulae for work, power and efficiency

2

Calculate properties of gas during expansion and compression

2.1

Calculations are performed by applying Boyle’s, Charles’s and combined gas law

2.2

Gas equation is derived and applied to gas process calculations

2.3

Specific heat of gases and the relationship between Cp, Cv, R and Gamma is defined

2.4

Heat transfer is calculated for constant pressure and constant volume processes

2.5

Isothermal, adiabatic and polytropic processes are outlined and properties of gases after expansion and compression including the effects of turbocharging are calculated

2.6

Work required to compress gases is illustrated and calculated

3

Explain methods of heat transfer

3.1

Different forms of heat transfer and their application to marine systems are explained

3.2

Heat transfer through flat layers is calculated

3.3

Purpose of insulation is explained

4

Explain enthalpy and apply to mixture calculations

4.1

Heat energy is defined

4.2

Fundamental formula for heat energy transfer is developed

4.3

Specific heat and its application are identified

4.4

Enthalpy and change of phase are outlined

4.5

Heat mixture problems involving water equivalent, ice, water and steam are solved

4.6

Specific heat of materials are calculated

4.7

Latent heat and dryness fraction are identified

4.8

Steam tables are used to find values of enthalpy for water, saturated and superheated steam and dryness fraction

4.9

Temperature/enthalpy diagram is constructed from steam table data

5

Explain steam plants and calculate thermal efficiency

5.1

Basic steam plant cycles are sketched and function of each component is outlined

5.2

Steam cycles on a temperature/enthalpy diagram are illustrated

5.3

Effects of superheating and under cooling are clarified

5.4

Calculations are performed for heat supplied, rejected, work and thermal efficiency of a steam plant

5.5

Methods of improving cycle efficiency are outlined

6

Explain operation of internal combustion engine cycles

6.1

Operating principles of two stroke and four stroke internal combustion engines are outlined

6.2

Differentiation is made, by use of a pressure/volume diagram, between Otto, Diesel and Dual combustion cycles

6.3

Mean effective pressure is calculated from an indicator diagram

6.4

Indicated power formula is developed and related calculations are solved

6.5

Specific fuel consumption is defined and calculated

6.6

Ideal cycle and air standard efficiency is defined

7

Explain operating cycle of reciprocating air compressors

7.1

Pressure/volume diagram is used to describe operating cycle of single stage reciprocating air compressors

7.2

Mass of air delivered by single stage reciprocating air compressors is calculated

7.3

Clearance volume and its effect on volumetric efficiency is outlined, and volumetric efficiency is calculated

7.4

Work per cycle for isothermal and polytropic processes is calculated

8

Explain operating cycle of refrigeration and air conditioning plant

8.1

Principle of refrigeration is outlined

8.2

Temperature/enthalpy and pressure/enthalpy diagrams are compared

8.3

Refrigerants used in refrigeration and air conditioning machines are identified

8.4

Refrigeration effect and plant capacity are defined

8.5

Refrigeration tables are used to calculate refrigeration effect and condition of vapour after expansion

8.6

Operating cycle of self-contained and centralised air conditioning systems are outlined and compared

8.7

Relative humidity is defined and key features of a psychrometric chart are outlined

9

Apply linear, superficial and volumetric expansion equations to calculate expansion of liquids and metals

9.1

Expansion processes for metals is defined

9.2

Coefficient of linear expansion is outlined

9.3

Linear expansion is applied to calculate machinery clearances and to shrink fit allowances

9.4

Superficial and volumetric expansion of solids is calculated and recorded

9.5

Apparent expansion of liquids in tanks is calculated and recorded

Required Skills and Knowledge

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Explain common thermodynamic principles

1.1

Desired System International (SI) units applicable to thermodynamic calculations are developed

1.2

Basic properties of fluids are outlined

1.3

Gauge pressure is distinguished from absolute pressure

1.4

Temperature is defined and temperature scales are outlined

1.5

Calculations are performed by applying formulae for work, power and efficiency

2

Calculate properties of gas during expansion and compression

2.1

Calculations are performed by applying Boyle’s, Charles’s and combined gas law

2.2

Gas equation is derived and applied to gas process calculations

2.3

Specific heat of gases and the relationship between Cp, Cv, R and Gamma is defined

2.4

Heat transfer is calculated for constant pressure and constant volume processes

2.5

Isothermal, adiabatic and polytropic processes are outlined and properties of gases after expansion and compression including the effects of turbocharging are calculated

2.6

Work required to compress gases is illustrated and calculated

3

Explain methods of heat transfer

3.1

Different forms of heat transfer and their application to marine systems are explained

3.2

Heat transfer through flat layers is calculated

3.3

Purpose of insulation is explained

4

Explain enthalpy and apply to mixture calculations

4.1

Heat energy is defined

4.2

Fundamental formula for heat energy transfer is developed

4.3

Specific heat and its application are identified

4.4

Enthalpy and change of phase are outlined

4.5

Heat mixture problems involving water equivalent, ice, water and steam are solved

4.6

Specific heat of materials are calculated

4.7

Latent heat and dryness fraction are identified

4.8

Steam tables are used to find values of enthalpy for water, saturated and superheated steam and dryness fraction

4.9

Temperature/enthalpy diagram is constructed from steam table data

5

Explain steam plants and calculate thermal efficiency

5.1

Basic steam plant cycles are sketched and function of each component is outlined

5.2

Steam cycles on a temperature/enthalpy diagram are illustrated

5.3

Effects of superheating and under cooling are clarified

5.4

Calculations are performed for heat supplied, rejected, work and thermal efficiency of a steam plant

5.5

Methods of improving cycle efficiency are outlined

6

Explain operation of internal combustion engine cycles

6.1

Operating principles of two stroke and four stroke internal combustion engines are outlined

6.2

Differentiation is made, by use of a pressure/volume diagram, between Otto, Diesel and Dual combustion cycles

6.3

Mean effective pressure is calculated from an indicator diagram

6.4

Indicated power formula is developed and related calculations are solved

6.5

Specific fuel consumption is defined and calculated

6.6

Ideal cycle and air standard efficiency is defined

7

Explain operating cycle of reciprocating air compressors

7.1

Pressure/volume diagram is used to describe operating cycle of single stage reciprocating air compressors

7.2

Mass of air delivered by single stage reciprocating air compressors is calculated

7.3

Clearance volume and its effect on volumetric efficiency is outlined, and volumetric efficiency is calculated

7.4

Work per cycle for isothermal and polytropic processes is calculated

8

Explain operating cycle of refrigeration and air conditioning plant

8.1

Principle of refrigeration is outlined

8.2

Temperature/enthalpy and pressure/enthalpy diagrams are compared

8.3

Refrigerants used in refrigeration and air conditioning machines are identified

8.4

Refrigeration effect and plant capacity are defined

8.5

Refrigeration tables are used to calculate refrigeration effect and condition of vapour after expansion

8.6

Operating cycle of self-contained and centralised air conditioning systems are outlined and compared

8.7

Relative humidity is defined and key features of a psychrometric chart are outlined

9

Apply linear, superficial and volumetric expansion equations to calculate expansion of liquids and metals

9.1

Expansion processes for metals is defined

9.2

Coefficient of linear expansion is outlined

9.3

Linear expansion is applied to calculate machinery clearances and to shrink fit allowances

9.4

Superficial and volumetric expansion of solids is calculated and recorded

9.5

Apparent expansion of liquids in tanks is calculated and recorded

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

applying relevant work health and safety/occupational health and safety (WHS/OHS) requirements and work practices

assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices

identifying and applying relevant mathematical formulas and techniques to solve basic problems related to marine engineering thermodynamics

identifying and interpreting numerical and graphical information, and perform basic mathematical calculations related to marine engineering thermodynamics, such as gas expansion and contraction, heat transfer, thermal efficiency, and the expansion of liquids and solids

identifying, collating and processing information required to perform basic calculations related to marine engineering thermodynamics

reading and interpreting written information needed to perform basic calculations related to marine engineering thermodynamics

performing accurate and reliable mathematical calculations using a calculator

solving problems using appropriate laws and principles.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

basic principles of marine engineering thermodynamics

enthalpy

effective verbal, written and visual communication strategies

expansion processes for metals (conduction, convection, radiation)

forms of heat transfer (conduction, convection, radiation)

gas laws

internal combustion engine cycles

methods of heat transfer

operating cycle of reciprocating air compressors

operating principles of two stroke and four stroke internal combustion engines

principles of refrigeration

properties of fluids (density, mass, pressure, specific volume, temperature)

SI units

steam plants

thermodynamic principles

thermal efficiency calculations

WHS/OHS requirements and work practices.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Not applicable.