Modification History
Release 1 (MEM05v9).
Unit Descriptor
This unit of competency covers the skills and knowledge required to identify psychrometric processes and determine system performance in a commercial building.
Application of the Unit
The unit applies to technicians in enterprises designing, manufacturing, installing, servicing or maintaining heating, ventilation, air conditioning and refrigeration (HVAC/R) equipment.
The unit is suitable for people working as, supervisors, technicians and HVAC/R draftspersons, and those pursuing manufacturing engineering or related technical qualifications and careers.
Licensing/Regulatory Information
No licensing, legislative, regulatory or certification requirements apply to this unit.
Pre-Requisites
MEM23004A |
Apply technical mathematics |
MEM23006A |
Apply fluid and thermodynamics principles in engineering |
Employability Skills Information
This unit contains employability skills.
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the performance needed to demonstrate achievement of the element. |
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 |
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1.3 |
Diagnose air temperature and humidity problems using psychrometric charts |
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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 |
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2.3 |
Establish plant capacity and air flow rates for the system/building |
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2.4 |
Establish air side systems and determine system performance |
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2.5 |
Determine systemic performance parameters |
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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 |
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3.3 |
Prepare and justify recommendations for any required actions in relation to HVAC/R equipment |
Required Skills and Knowledge
This section describes the skills and knowledge required for this unit. |
Required skills |
Required skills include:
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Required knowledge |
Required knowledge includes:
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Evidence Guide
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. |
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Critical aspects for assessment and evidence required to demonstrate competency in this unit |
Assessors must be satisfied that the candidate can competently and consistently:
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Context of and specific resources for assessment |
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Method of assessment |
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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. |
Range Statement
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. |
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WHS requirements |
WHS requirements include:
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Environmental requirements |
Environmental requirements include:
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Appropriate personnel |
Appropriate personnel may include:
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Systemic performance parameters |
Systemic performance parameters may include:
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Enterprise procedures |
Enterprise procedures may include:
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Unit Sector(s)
Competency field |
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Unit sector |
Engineering science |
Custom Content Section
Not applicable.