Unit of competency Outline
Date retreived
22/07/2026 3:16 PM AWST
22/07/2026 3:16 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Determine psychrometric processes and system performance
Determine psychrometric processes and system performance
Unit of competency
National Code
MEM23142A
MEM23142A
State Code
WE955
WE955
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
16/04/2013
Field of Education
030703 - Industrial Engineering
Original Release Date
16/04/2013
Nominal Hours
55
Description
This unit of competency covers the skills and knowledge required to identify psychrometric processes and determine system performance in a commercial building.
Notes
Elements and Performance Criteria
1 Review psychrometric processes
- 1.1 Obtain and implement work health and safety (WHS) and environmental requirements for a given work area
- 1.2 Apply knowledge of psychrometric processes to analytical solutions to HVAC/R systems according to enterprise procedures
- 1.3 Diagnose air temperature and humidity problems using psychrometric charts
- 1.4 Consult appropriate personnel to ensure that work is coordinated effectively with others
2 Analyse the psychrometric and system performance of HVAC/R systems
- 2.1 Determine plant/system capacity and airflow requirements for effects of coil bypass factor and apparatus dew point (ADP) and partial load control
- 2.2 Calculate dehumidified air quantity using both target superheat (TSH) and effective room sensible heat (ERSH) methods
- 2.3 Establish plant capacity and air flow rates for the system/building
- 2.4 Establish air side systems and determine system performance
- 2.5 Determine systemic performance parameters
- 2.6 Consult as required on any contingencies and unexpected situations and take appropriate action based on specifications, codes and standards, and enterprise procedures
3 Document and report on psychrometric and HVAC/R system performance
- 3.1 Evaluate solutions to psychrometric and system performance to determine their effectiveness
- 3.2 Report and document analysis, including details of all findings, calculations and assumptions, according to enterprise procedures
- 3.3 Prepare and justify recommendations for any required actions in relation to HVAC/R equipment
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.
WHS requirements
WHS requirements include:
legislation
protective equipment
material safety management systems
hazardous substances and dangerous goods code
local safe operation procedures
awards provisions
Environmental requirements
Environmental requirements include:
relevant legislation, regulations and codes
correct handling and disposal of liquid and solid waste
elimination or minimisation of gas, fume, vapour and smoke emissions, including fugitive emissions
dust elimination, minimisation and control
minimisation of energy and water use
elimination or control of excessive noise
use and recycling of refrigerants
Appropriate personnel
Appropriate personnel may include:
supervisor
leading hand
foreman
manager
engineer
technician
trainer
mentor
team member
customer
client
Systemic performance parameters
Systemic performance parameters may include:
coil characteristics
spray processes
Enterprise procedures
Enterprise procedures may include:
the use of tools and equipment
instructions, including job sheets, plans, drawings and designs
reporting and communication
manufacturer specifications
operational procedures
industry standards
WHS requirements
WHS requirements include:
legislation
protective equipment
material safety management systems
hazardous substances and dangerous goods code
local safe operation procedures
awards provisions
Environmental requirements
Environmental requirements include:
relevant legislation, regulations and codes
correct handling and disposal of liquid and solid waste
elimination or minimisation of gas, fume, vapour and smoke emissions, including fugitive emissions
dust elimination, minimisation and control
minimisation of energy and water use
elimination or control of excessive noise
use and recycling of refrigerants
Appropriate personnel
Appropriate personnel may include:
supervisor
leading hand
foreman
manager
engineer
technician
trainer
mentor
team member
customer
client
Systemic performance parameters
Systemic performance parameters may include:
coil characteristics
spray processes
Enterprise procedures
Enterprise procedures may include:
the use of tools and equipment
instructions, including job sheets, plans, drawings and designs
reporting and communication
manufacturer specifications
operational procedures
industry standards
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Assessors must be satisfied that the candidate can competently and consistently:
implement WHS workplace procedures and practices, including the use of risk control measures
demonstrate essential knowledge and skills to determine psychrometric processes and system performance
demonstrate competency within a timeframe typically expected of the discipline, work function and industrial environment
demonstrate the ability to determine psychrometric processes and system performance consistently for commercial buildings. This includes determining the plant capacity and airflow rates for a building and the ability to analyse system ‘air side systems’ and determine system performance.
Context of and specific resources for assessment
This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations.
The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.
Method of assessment
Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.
Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.
Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application.
Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.
Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.
Assessment may be in conjunction with assessment of other units of competency where required.
Guidance information for assessment
Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Assessors must be satisfied that the candidate can competently and consistently:
implement WHS workplace procedures and practices, including the use of risk control measures
demonstrate essential knowledge and skills to determine psychrometric processes and system performance
demonstrate competency within a timeframe typically expected of the discipline, work function and industrial environment
demonstrate the ability to determine psychrometric processes and system performance consistently for commercial buildings. This includes determining the plant capacity and airflow rates for a building and the ability to analyse system ‘air side systems’ and determine system performance.
Context of and specific resources for assessment
This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations.
The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.
Method of assessment
Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.
Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.
Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application.
Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.
Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.
Assessment may be in conjunction with assessment of other units of competency where required.
Guidance information for assessment
Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| OET93 | MEM23142 | Determine psychrometric processes and system performance | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| J367 | MEM50212 | Diploma of Engineering - Technical | Qualification |