Required skills

Required skills include

plotting the psychrometric performance of a given HVACR coil

calculating the psychrometric performance of the coil

calculating the psychrometric performance of HVACR spray equipment

calculating required plant capacity and airflow rates

determining the psychrometric performance of a HVACR system in operation including partial load control

interpreting drawings and specifications

communicating effectively with others

working in teams with others

communicating technical and procedural requirements to others

dealing effectively with unexpected situations

Required knowledge

Required knowledge includes

adiabaticevaporative 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 to include cooling and dehumidification cooling and humidification with heated spray water heating and humidification

partial load processes

reheat

bypass of return air and mix of return air and outside air

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

cooling tower characteristics

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 MEM Metal and Engineering Training Package

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 projectrelated 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

WHS requirements

Environmental requirements

Appropriate personnel

Systemic performance parameters

Enterprise procedures