UEERA0038 — Establish the thermodynamic parameters of refrigeration and air conditioning systems

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What an assessment for UEERA0038 must cover

131 assessable components: 3 elements (15 performance criteria), 9 performance evidence and 107 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Prepare to determine thermodynamic parameters of refrigeration and air conditioning system

1.1Work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures for a given work area are identified and applied
1.2WHS/OHS risk control measures and workplace procedures are followed in preparation for refrigeration and air conditioning system work
1.3Refrigeration and air conditioning system operating conditions are obtained from documentation or work supervisor to determine the scope of work to be undertaken
1.4Advice is sought from the work supervisor to ensure refrigeration and air conditioning system work is coordinated effectively with others
1.5Tools, equipment and testing devices needed to determine the refrigeration and air conditioning system operating conditions are obtained and checked for correct operation and safety

2 Determine thermodynamic parameters of refrigeration and air conditioning system

2.1WHS/OHS risk control measures and workplace procedures for carrying out refrigeration and air conditioning system work are followed
2.2Measurement of thermodynamic system operating parameters is conducted in accordance with WHS/OHS requirements and workplace safety procedures
2.3System is checked and isolated in accordance with WHS/OHS requirements and workplace procedures
2.4Actual and specified range of thermodynamic parameters are determined from measured and calculated values as they apply to refrigeration or air conditioning system in accordance to workplace procedures
2.5Unexpected situations are discussed with appropriate person/s, responded to in accordance with workplace procedures and documented in a manner that minimises risk to personnel and equipment
2.6Thermodynamic parameters are determined without damage to apparatus, circuits, the surrounding environment or services using sustainable energy practices

3 Document thermodynamic parameters

3.1WHS/OHS work completion risk control measures and workplace procedures are followed
3.2Worksite and equipment are cleaned and made safe in accordance with workplace procedures
3.3Thermodynamic parameters are documented, including identification of any parameter that is not within the specified range for the refrigeration and air conditioning system
3.4Work supervisor is notified of work completion in accordance with workplace procedures

Performance evidence

selecting and using appropriate measuring devices correctly
interpreting measurements
using calculation methods accurately
identifying parameters not within the specified range
documenting thermodynamic parameters correctly
dealing with unplanned events
applying relevant work health and safety (WHS)/occupational health and safety (OHS) workplace procedures requirements, including the use of risk control measures
applying sustainable energy principles and practices
planning to determine thermodynamic parameters of refrigeration and air conditioning system

Knowledge evidence

thermodynamic parameters of refrigeration and air conditioning systems, engineering mathematics fundamentals and refrigeration science, including:
arithmetic:
rational and irrational numbers, surds
International System of Units (SI) units and conversion using unity brackets
laws of indices (base 10), scientific and engineering notation
estimations, errors and approximations, and significant figures
algebra:
substitution
+, -, x on simple polynomials and simple indices
expanding brackets
factorising quadratics, common factors and difference of two squares
simplifying algebraic fractions
transposition of engineering formulae
solving one variable equations
simple algebraic division
geometry:
Pythagoras Theorem
angles: degrees, radians and parallel lines cut by a transverse
triangles: sum of angles, and properties of equilateral and isosceles triangles
congruent triangles
similar triangles: ratio of corresponding sides
sin, cos, tan: ratios of a right-angled triangle
sine and cosine rules
circles: circumference, arcs, chords, tangents and circle theorems
area and perimeter mensuration on above figures
coordinate geometry:
2-D plane; x-y axes and s-t axes
graph of linear function, y = ax + b and functional notation, y = f(x)
straight line given slope and one point or given two points
linear equations: solving algebraically and geometrically
solving two linear functions simultaneously, algebraically and geometrically
line segment: length and mid-point
engineering mechanics:
mass/density
weight
forces
specific gravity
equilibrium
momentum
friction loss
velocity and speed
energy in all forms
mechanical advantage
efficiency
pressure/stress
molecular theory:
changes of state
sublimation
expansion and contraction
electron flow
state of aggregation
internal potential energy
phase change diagrams
thermodynamics:
temperature scales
conservation of energy
specific heat
sensible, latent and super heat
properties of steam
enthalpy
heat energy/temperature relationship
heat balance on a body
heat transfer
conductivity
calorimetry
peltier effect
1st and 2nd law of thermodynamics
gas laws and liquids:
pressure
Boyles law
Charles law
volumetric relationship
psychrometrics
latent heat of vaporisation
relative humidity
air conditioning processes
dynamic pressure loss
velocity and static pressure
bourdon tubes
density and relative density
Archimedes principle
Bernoulli’s equation
manometers
absorption refrigeration
centrifugal compression
external work of a liquid
pressure volume diagrams
isothermal and adiabatic processes
polytropic processes
Dalton’s law of partial pressure
vapour compression:
pressure/enthalpy relationship
entropy
characteristics of evaporation and condensation
compression and pressure drop phases
co-efficient of performance
theoretical/practical cycles
characteristics of refrigerants
theoretical power input
pressure losses
heat exchange
effects of condensing condition changes
sub-cooling and superheating
relevant job safety assessments or risk mitigation processes
relevant WHS/OHS legislated requirements
relevant workplace documentation
relevant workplace policies and procedures

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing UEERA0038

What does an assessment tool for UEERA0038 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for UEERA0038 needs to address all 131 unit components: 3 elements with 15 performance criteria, 9 performance evidence requirements, 107 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for UEERA0038?

Auditori pulls the current release of UEERA0038 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for UEERA0038 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing UEERA0038 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of UEERA0038, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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