Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARL019 Mapping and Delivery Guide
Apply advanced principles of marine engineering thermodynamics

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency MARL019 - Apply advanced principles of marine engineering thermodynamics
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to apply advanced principles of marine engineering thermodynamics to perform calculations and to explain the operation of marine machinery, including internal combustion and gas turbine engines, air compressors, steam condensers and refrigeration units.This unit applies to the work of a Marine Engineer Class 1 on commercial vessels of unlimited propulsion power and forms part of the requirements for the Certificate of Competency Marine Engineer Class 1 issued by the Australian Maritime Safety Authority (AMSA).No licensing, legislative or certification requirements apply to this unit at the time of publication.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

Assessors must satisfy National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) assessor requirements.

Assessment must satisfy the National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) standards.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Assessment must occur in workplace operational situations or where these are not available, in simulated workplace operational situations or an industry-approved marine operations site that replicates workplace conditions where advanced principles of marine engineering thermodynamics can be applied.

Resources for assessment include access to:

applicable documentation including workplace procedures, regulations, codes of practice and operation manuals

diagrams, specifications and other information required for performing advanced calculations related to marine engineering thermodynamics

technical reference library with current publications on marine thermodynamics

tools, equipment, materials and personal protective equipment currently used in industry.

Performance should be demonstrated consistently over time and in a suitable range of contexts.
Prerequisites/co-requisites
Competency Field L – Marine Engineering
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Calculate heat energy with and without phase change
  • Enthalpy is applied to heat mixture calculations with or without phase change
  • Enthalpy is applied to calculate resultant conditions of hot wells involving multiple returns
  • Steam conditions in a system when using throttling devices and separators are calculated
  • Entropy is distinguished from enthalpy
  • Entropy values are determined from standard tables
       
Element: Analyse change of phase and state diagrams
  • Tables and/or diagrams are used to find enthalpy and entropy values for liquid, part liquid-part vapour and vapour states
  • Carnot cycle is outlined
  • Rankine cycle is outlined
  • Isentropic efficiency is explained
  • Problems are solved involving the efficiency of steam turbines operating in the Rankine cycle
       
Element: Apply Dalton’s law of partial pressures to steam condensers
  • Dalton’s Law is applied to calculate air and condensate extraction from condensers
  • Problems are solved involving cooling water mass flow and cooling water pump work
       
Element: Apply chemical equations for complete and incomplete combustion
  • Atomic and molecular weights and kilogram-mol are explained
  • Calorific value of a fuel is calculated by chemical formula
  • Mass of air required for stoichiometric combustion is calculated by gravimetric and volumetric analysis
  • Air fuel ratio is determined when supplied with composition of fuel and exhaust gas analysis
       
Element: Apply gas laws to analyse internal combustion engine efficiencies
  • Universal gas constant form AVOGADRO S hypothesis is determined
  • Heat transfer is calculated for constant volume and constant pressure processes
  • First law of thermodynamics is applied to thermodynamic processes in a closed system
  • Second law of thermodynamics is applied to find thermal efficiency of Carnot cycle
  • Mathematical formula is applied to solve problems related to ideal constant volume air standard cycle
  • Mathematical formula is applied to solve problems related to diesel and dual cycles
       
Element: Calculate performance of internal combustion and gas turbine engines
  • P/V and out of phase engine indicator diagrams are analysed
  • Work, power, mean effective pressure and thermal efficiency of internal combustion engine cycles is calculated
  • Heat transfer to jacket cooling systems is calculated
  • Open and closed systems for gas turbines are outlined
  • Temperature/entropy diagrams are applied to illustrate gas turbine cycles
  • Power, isentropic efficiencies, thermal efficiency, work and fuel consumption for gas turbine cycles is calculated
  • Methods to increase efficiency of gas turbines are specified
  • Reheaters and intercoolers and how they improve efficiency is explained
       
Element: Analyse air compressor performance
  • Compressor types are classified
  • Volumetric efficiency at free air conditions is explained
  • Work is calculated for isothermal and adiabatic compression, and effect of clearance for reciprocating compressor
  • Pressure ratio for compressor types is analysed
  • Problems are solved relating to multi-staging and intercooling
  • Heat transfer to air or cooling water from an air compressor is calculated
  • Formula to calculate work and efficiency of centrifugal compressors is derived
       
Element: Analyse vapour compression refrigeration cycles
  • Design parameters for a vapour compression cycle are explained
  • Pressure/enthalpy diagram is prepared for a refrigeration cycle
  • Heat rejected, work done and coefficient of performance (COP) for a basic cycle is calculated
  • Effect of sub cooling and superheating is shown on a temperature/entropy diagram
  • COP is calculated with evaporators operating at two different pressures
       
Element: Apply psychrometric principles to solve air conditioning problems
  • Comfort conditions for air conditioning systems are defined
  • Key parameters used in defining air condition are illustrated on a psychrometric chart
  • Cooling loads are calculated
  • Problems associated with air delivering and distribution methods are analysed
  • Methods of controlling noise and vibration in air conditioning systems are analysed
       
Element: Analyse different methods of heat transfer
  • Heat flow through composite divisions is calculated
  • Insulation dimensions and interface temperatures are determined
  • Problems relating to radiated energy are solved by applying Stefan-Boltzmann Law
  • Problems in heat exchangers are solved by applying log mean temperature difference
  • Relative efficiency of contra-flow heat exchange is determined
       
Element: Apply Dalton’s law of partial pressures to steam condensers
  • Dalton’s Law is applied to calculate air and condensate extraction from condensers
  • Problems are solved involving cooling water mass flow and cooling water pump work
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

Elements describe the essential outcomes.

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

1

Calculate heat energy with and without phase change

1.1

Enthalpy is applied to heat mixture calculations with or without phase change

1.2

Enthalpy is applied to calculate resultant conditions of hot wells involving multiple returns

1.3

Steam conditions in a system when using throttling devices and separators are calculated

1.4

Entropy is distinguished from enthalpy

1.5

Entropy values are determined from standard tables

2

Analyse change of phase and state diagrams

2.1

Tables and/or diagrams are used to find enthalpy and entropy values for liquid, part liquid-part vapour and vapour states

2.2

Carnot cycle is outlined

2.3

Rankine cycle is outlined

2.4

Isentropic efficiency is explained

2.5

Problems are solved involving the efficiency of steam turbines operating in the Rankine cycle

3

Apply Dalton’s law of partial pressures to steam condensers

3.1

Dalton’s Law is applied to calculate air and condensate extraction from condensers

3.2

Problems are solved involving cooling water mass flow and cooling water pump work

4

Apply chemical equations for complete and incomplete combustion

4.1

Atomic and molecular weights and kilogram-mol are explained

4.2

Calorific value of a fuel is calculated by chemical formula

4.3

Mass of air required for stoichiometric combustion is calculated by gravimetric and volumetric analysis

4.4

Air fuel ratio is determined when supplied with composition of fuel and exhaust gas analysis

5

Apply gas laws to analyse internal combustion engine efficiencies

5.1

Universal gas constant form AVOGADRO S hypothesis is determined

5.2

Heat transfer is calculated for constant volume and constant pressure processes

5.3

First law of thermodynamics is applied to thermodynamic processes in a closed system

5.4

Second law of thermodynamics is applied to find thermal efficiency of Carnot cycle

5.5

Mathematical formula is applied to solve problems related to ideal constant volume air standard cycle

5.6

Mathematical formula is applied to solve problems related to diesel and dual cycles

6

Calculate performance of internal combustion and gas turbine engines

6.1

P/V and out of phase engine indicator diagrams are analysed

6.2

Work, power, mean effective pressure and thermal efficiency of internal combustion engine cycles is calculated

6.3

Heat transfer to jacket cooling systems is calculated

6.4

Open and closed systems for gas turbines are outlined

6.5

Temperature/entropy diagrams are applied to illustrate gas turbine cycles

6.6

Power, isentropic efficiencies, thermal efficiency, work and fuel consumption for gas turbine cycles is calculated

6.7

Methods to increase efficiency of gas turbines are specified

6.8

Reheaters and intercoolers and how they improve efficiency is explained

7

Analyse air compressor performance

7.1

Compressor types are classified

7.2

Volumetric efficiency at free air conditions is explained

7.3

Work is calculated for isothermal and adiabatic compression, and effect of clearance for reciprocating compressor

7.4

Pressure ratio for compressor types is analysed

7.5

Problems are solved relating to multi-staging and intercooling

7.6

Heat transfer to air or cooling water from an air compressor is calculated

7.7

Formula to calculate work and efficiency of centrifugal compressors is derived

8

Analyse vapour compression refrigeration cycles

8.1

Design parameters for a vapour compression cycle are explained

8.2

Pressure/enthalpy diagram is prepared for a refrigeration cycle

8.3

Heat rejected, work done and coefficient of performance (COP) for a basic cycle is calculated

8.4

Effect of sub cooling and superheating is shown on a temperature/entropy diagram

8.5

COP is calculated with evaporators operating at two different pressures

9

Apply psychrometric principles to solve air conditioning problems

9.1

Comfort conditions for air conditioning systems are defined

9.2

Key parameters used in defining air condition are illustrated on a psychrometric chart

9.3

Cooling loads are calculated

9.4

Problems associated with air delivering and distribution methods are analysed

9.5

Methods of controlling noise and vibration in air conditioning systems are analysed

10

Analyse different methods of heat transfer

10.1

Heat flow through composite divisions is calculated

10.2

Insulation dimensions and interface temperatures are determined

10.3

Problems relating to radiated energy are solved by applying Stefan-Boltzmann Law

10.4

Problems in heat exchangers are solved by applying log mean temperature difference

10.5

Relative efficiency of contra-flow heat exchange is determined

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

explaining advanced principles of marine engineering thermodynamics

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

identifying and interpreting numerical and graphical information, and performing advanced mathematical calculations related to marine engineering thermodynamics, such as calculation of power, isentropic efficiencies, thermal efficiency, work and fuel consumption for gas turbine cycles

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

imparting knowledge and ideas through verbal, written and visual means

using calculators to perform accurate, reliable and complex mathematical calculations

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

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:

atomic and molecular weights and the kilogram-mol

Daltons Law of partial pressures

enthalpy

gas laws

gas turbines

heat transfer:

methods

principles

internal combustion engine cycles

Laws of Thermodynamics

noise and vibration control:

fundamentals of sound

noise and vibration problems

methods of control

operating cycle of reciprocating air compressors

operating principles of two-stroke and four-stroke internal combustion engines

principles of refrigeration

Rankine cycle

System International (SI) units

thermal efficiency calculations

WHS/OHS requirements and work practices.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Elements describe the essential outcomes.

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

1

Calculate heat energy with and without phase change

1.1

Enthalpy is applied to heat mixture calculations with or without phase change

1.2

Enthalpy is applied to calculate resultant conditions of hot wells involving multiple returns

1.3

Steam conditions in a system when using throttling devices and separators are calculated

1.4

Entropy is distinguished from enthalpy

1.5

Entropy values are determined from standard tables

2

Analyse change of phase and state diagrams

2.1

Tables and/or diagrams are used to find enthalpy and entropy values for liquid, part liquid-part vapour and vapour states

2.2

Carnot cycle is outlined

2.3

Rankine cycle is outlined

2.4

Isentropic efficiency is explained

2.5

Problems are solved involving the efficiency of steam turbines operating in the Rankine cycle

3

Apply Dalton’s law of partial pressures to steam condensers

3.1

Dalton’s Law is applied to calculate air and condensate extraction from condensers

3.2

Problems are solved involving cooling water mass flow and cooling water pump work

4

Apply chemical equations for complete and incomplete combustion

4.1

Atomic and molecular weights and kilogram-mol are explained

4.2

Calorific value of a fuel is calculated by chemical formula

4.3

Mass of air required for stoichiometric combustion is calculated by gravimetric and volumetric analysis

4.4

Air fuel ratio is determined when supplied with composition of fuel and exhaust gas analysis

5

Apply gas laws to analyse internal combustion engine efficiencies

5.1

Universal gas constant form AVOGADRO S hypothesis is determined

5.2

Heat transfer is calculated for constant volume and constant pressure processes

5.3

First law of thermodynamics is applied to thermodynamic processes in a closed system

5.4

Second law of thermodynamics is applied to find thermal efficiency of Carnot cycle

5.5

Mathematical formula is applied to solve problems related to ideal constant volume air standard cycle

5.6

Mathematical formula is applied to solve problems related to diesel and dual cycles

6

Calculate performance of internal combustion and gas turbine engines

6.1

P/V and out of phase engine indicator diagrams are analysed

6.2

Work, power, mean effective pressure and thermal efficiency of internal combustion engine cycles is calculated

6.3

Heat transfer to jacket cooling systems is calculated

6.4

Open and closed systems for gas turbines are outlined

6.5

Temperature/entropy diagrams are applied to illustrate gas turbine cycles

6.6

Power, isentropic efficiencies, thermal efficiency, work and fuel consumption for gas turbine cycles is calculated

6.7

Methods to increase efficiency of gas turbines are specified

6.8

Reheaters and intercoolers and how they improve efficiency is explained

7

Analyse air compressor performance

7.1

Compressor types are classified

7.2

Volumetric efficiency at free air conditions is explained

7.3

Work is calculated for isothermal and adiabatic compression, and effect of clearance for reciprocating compressor

7.4

Pressure ratio for compressor types is analysed

7.5

Problems are solved relating to multi-staging and intercooling

7.6

Heat transfer to air or cooling water from an air compressor is calculated

7.7

Formula to calculate work and efficiency of centrifugal compressors is derived

8

Analyse vapour compression refrigeration cycles

8.1

Design parameters for a vapour compression cycle are explained

8.2

Pressure/enthalpy diagram is prepared for a refrigeration cycle

8.3

Heat rejected, work done and coefficient of performance (COP) for a basic cycle is calculated

8.4

Effect of sub cooling and superheating is shown on a temperature/entropy diagram

8.5

COP is calculated with evaporators operating at two different pressures

9

Apply psychrometric principles to solve air conditioning problems

9.1

Comfort conditions for air conditioning systems are defined

9.2

Key parameters used in defining air condition are illustrated on a psychrometric chart

9.3

Cooling loads are calculated

9.4

Problems associated with air delivering and distribution methods are analysed

9.5

Methods of controlling noise and vibration in air conditioning systems are analysed

10

Analyse different methods of heat transfer

10.1

Heat flow through composite divisions is calculated

10.2

Insulation dimensions and interface temperatures are determined

10.3

Problems relating to radiated energy are solved by applying Stefan-Boltzmann Law

10.4

Problems in heat exchangers are solved by applying log mean temperature difference

10.5

Relative efficiency of contra-flow heat exchange is determined

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

Tables and/or diagrams include one or more of the following:

pressure–enthalpy

pressure–specific volume

specific enthalpy–specific entropy

temperature–pressure

temperature–specific enthalpy

temperature–specific entropy

Thermodynamic processes include one or more of the following:

adiabatic

isobaric

isochoric

isothermal

polytropic

Parameters include one or more of the following:

adiabatic saturation or constant enthalpy

humidifying or dehumidifying

latent heat

sensible heat

Methods include one or more of the following:

duct attenuators

duct lining

lined duct splitters

lined plenums

natural attenuation

sound absorbing materials/placement

vibration isolators

white noise

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Enthalpy is applied to heat mixture calculations with or without phase change 
Enthalpy is applied to calculate resultant conditions of hot wells involving multiple returns 
Steam conditions in a system when using throttling devices and separators are calculated 
Entropy is distinguished from enthalpy 
Entropy values are determined from standard tables 
Tables and/or diagrams are used to find enthalpy and entropy values for liquid, part liquid-part vapour and vapour states 
Carnot cycle is outlined 
Rankine cycle is outlined 
Isentropic efficiency is explained 
Problems are solved involving the efficiency of steam turbines operating in the Rankine cycle 
Dalton’s Law is applied to calculate air and condensate extraction from condensers 
Problems are solved involving cooling water mass flow and cooling water pump work 
Atomic and molecular weights and kilogram-mol are explained 
Calorific value of a fuel is calculated by chemical formula 
Mass of air required for stoichiometric combustion is calculated by gravimetric and volumetric analysis 
Air fuel ratio is determined when supplied with composition of fuel and exhaust gas analysis 
Universal gas constant form AVOGADRO S hypothesis is determined 
Heat transfer is calculated for constant volume and constant pressure processes 
First law of thermodynamics is applied to thermodynamic processes in a closed system 
Second law of thermodynamics is applied to find thermal efficiency of Carnot cycle 
Mathematical formula is applied to solve problems related to ideal constant volume air standard cycle 
Mathematical formula is applied to solve problems related to diesel and dual cycles 
P/V and out of phase engine indicator diagrams are analysed 
Work, power, mean effective pressure and thermal efficiency of internal combustion engine cycles is calculated 
Heat transfer to jacket cooling systems is calculated 
Open and closed systems for gas turbines are outlined 
Temperature/entropy diagrams are applied to illustrate gas turbine cycles 
Power, isentropic efficiencies, thermal efficiency, work and fuel consumption for gas turbine cycles is calculated 
Methods to increase efficiency of gas turbines are specified 
Reheaters and intercoolers and how they improve efficiency is explained 
Compressor types are classified 
Volumetric efficiency at free air conditions is explained 
Work is calculated for isothermal and adiabatic compression, and effect of clearance for reciprocating compressor 
Pressure ratio for compressor types is analysed 
Problems are solved relating to multi-staging and intercooling 
Heat transfer to air or cooling water from an air compressor is calculated 
Formula to calculate work and efficiency of centrifugal compressors is derived 
Design parameters for a vapour compression cycle are explained 
Pressure/enthalpy diagram is prepared for a refrigeration cycle 
Heat rejected, work done and coefficient of performance (COP) for a basic cycle is calculated 
Effect of sub cooling and superheating is shown on a temperature/entropy diagram 
COP is calculated with evaporators operating at two different pressures 
Comfort conditions for air conditioning systems are defined 
Key parameters used in defining air condition are illustrated on a psychrometric chart 
Cooling loads are calculated 
Problems associated with air delivering and distribution methods are analysed 
Methods of controlling noise and vibration in air conditioning systems are analysed 
Heat flow through composite divisions is calculated 
Insulation dimensions and interface temperatures are determined 
Problems relating to radiated energy are solved by applying Stefan-Boltzmann Law 
Problems in heat exchangers are solved by applying log mean temperature difference 
Relative efficiency of contra-flow heat exchange is determined 
Dalton’s Law is applied to calculate air and condensate extraction from condensers 
Problems are solved involving cooling water mass flow and cooling water pump work 

Forms

Assessment Cover Sheet

MARL019 - Apply advanced principles of marine engineering thermodynamics
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MARL019 - Apply advanced principles of marine engineering thermodynamics

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