Assessment Requirements for MEM23142 Determine psychrometric processes and system performance

Release: 1

Assessment Requirements for MEM23142 Determine psychrometric processes and system performance

Modification History

Release 1. Supersedes and is equivalent to MEM23142A Determine psychrometric processes and system performance.

Performance Evidence

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

interpreting drawings and specifications

implementing work health and safety (WHS) procedures and practices including the use of risk control measures

determining psychrometric processes and system performance

plotting the psychrometric performance of a heating, ventilation and air conditioning and refrigeration (HVACR) coil on at least two occasions

determining the plant capacity and airflow rates for a building on at least two occasions

determining system performance

calculating the following:

psychrometric performance of the coil

psychrometric performance of HVACR spray equipment

required plant capacity and airflow rates

communicating technical and procedural requirements to others

dealing with unexpected situations.

Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.

Knowledge Evidence

Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:

WHS considerations

appropriate personnel

systemic performance parameters

adiabatic and evaporative cooling

isothermal humidification

cooling and dehumidification with high latent load

cooling and dehumidification with all outdoor air

cooling and dehumidification with all outdoor air and with dehumidified air requirements less than supply air

cooling with evaporative humidification

spray processes including cooling and dehumidification, cooling and humidification with heated spray water, heating and humidification including:

partial load processes

reheat

bypass of return air and mix of return air and outside air including:

variable air volume

variable coil effective surface temperature

analysis of cooling coil selection and performance

psychrometric analyses, formulae and charts

indirect evaporative coolers

analysis of cooling coil selection and performance

systemic performance parameters

cooling tower characteristics

environmental considerations

Assessment Conditions

Assessors must:

have vocational competency determining psychrometric processes and system performance at least to the level being assessed with relevant industry knowledge and experience

satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires.

Where possible assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions that cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills.

Conditions for assessment must include access to all tools, equipment, materials and documentation required including relevant workplace procedures, product and manufacturing specifications.

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.

Links

Companion Volume Implementation Guides are available on VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b7050d37-5fd0-4740-8f7d-3b7a49c10bb2