This describes the essential skills and knowledge and their level required for this unit

Evidence shall show that knowledge has been acquired of safe working practices and designing complex air conditioning systems

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies

KSEJA Complex HVAC system design

Evidence shall show an understanding of complex air conditioning system design applying safe working practices and relevant Standards Codes and Regulations to an extent indicated by the following aspects

T HVAC load estimating of multiple zone and multistorey buildings

System design parameters

human comfort

system requirements in accordance with AS

heat transfer calculations for complex structures and building components

heat and radiation transfer calculations through complex glass structures including various internal and external shading devices

indoor air quality

olfs and decipols

Complex shading

solar data azimuth and altitude angles

shading from adjacent structures

Computer software

heat load estimating

building thermal performance analysis and simulation software

T Advanced Psychrometrics

Complex psychrometric processes

revise sensible cooling and heating and evaporative adiabatic cooling

cooling and dehumidification

cooling and dehumidification with high latent load

cooling and dehumidification all out door air

cooling and dehumidification all out door air with dehumidified air requirements less than supply air

cooling with evaporative humidification

cooling with near isothermal humidification

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

partial load processes

reheat

bypass of RA only and mix of RA amp OA

variable air volume

variable coil effective surface temperature

split coil horizontal vertical and intertwined

System performance

saturation efficiency of sprayers

system capacity calculated from air quantity and enthalpy change

Required plant capacity and airflow rates

effects of coil bypass factor and ADP

calculation of dehumidified air quantity using both TSH and ERSH methods

Recap on psychrometrics formulae and charts

properties of air

gas constants

derivation of air constants

combined gas laws

Daltons law of partial pressures

Carriers equation

psychrometric property tables

psychrometric charts

air mixing equations

air quantity equations

indirect evaporative coolers

analysis of cooling coil selection and performance

psychrometric analysis of

air conditioning in tropics

all outdoor air

LCVHWF systems

psychrometric analysis using equations and tables

T Air conditioning system design

Design parameters for multistorey building

customer and objective

customer concept of environment desired

economic

client brief

Relevant design criteria

building purpose location orientation and shape

external environment ambient conditions

internal load diversity

thermal capacity behaviour

thermal load full and partial

Zoning and building usage

space and building

occupancies single purpose multipurpose

System selection criteria

economics

environment

control requirements

existing structures

new structures

system components

space for equipment and system

selection of appropriate system

System and applications

design features engineering procedures and controls for

direct expansion self contained roomzone heat pump multizone fancoils central station

all water room fancoil

allair constant volume variable temperature face and bypass reheat constant temp variable volume constant volume induction dualduct dualconduit

air water induction unit primary air fan coil

HVAC energy conversation techniques

heat recovery systems

night cycle

optimum stopstart

purge cycles

chillerboilercooling tower sequencing

economy cycles based on temperature or enthalpy

supply air reset

supply water reset

condenser water temperature reset

power demand control

load limiting

load shedding

set point relaxation

ventilation cycles

plant fixed OA to economy boiler to electric reheat constant volume to VAV etc

costbenefit payback

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria Required Skills and Knowledge the Range Statement and the Assessment Guidelines for this Training Package

The Evidence Guide forms an integral part of this Unit It must be used in conjunction with all parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitudinal competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the industrypreferred model for apprenticeships However where summative or final assessment is used it is to include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment In some circumstances assessment in part or full can occur outside the workplace However it must be in accordance with industry and regulatory policy

Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed

The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Sources of evidence need to be rich in nature to minimise error in judgment

Activities associated with normal everyday work influence decisions about howhow much the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit

Before the critical aspects of evidence are considered all prerequisites must be met

Evidence for competence in this unit shall be considered holistically Each Element and associated performance criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UEE Evidence shall also comprise

Evidence for competence in this unit shall be considered holistically. Each Element and associated performance criteria shall be demonstrated on at least two occasions in accordance with the 'Assessment Guidelines - UEE07 '. Evidence shall also comprise:

A representative body of work performance demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to

Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the performance criteria and range statement

Apply sustainable energy principles and practices as specified in the performance criteria and range statement

Demonstrate an understanding of the essential knowledge and associated skills as described in this unit It may be required by some jurisdictions that RTOs provide a percentile graded result for the purpose of regulatory or licensing requirements

Demonstrate an appropriate level of skills enabling employment

Conduct work observing the relevant Anti Discrimination legislation regulations polices and workplace procedures

Demonstrated consistent performance across a representative range of contexts from the prescribed items below

Design complex air conditioning systems as described in and including

A

Developing outlines of alternative designs

B

Developing the design within the safety regulatory functional requirements and budget limitations

C

Documenting and presenting design effectively

D

Successfully negotiating design alteration requests

E

Obtaining approval for final design

F

Dealing with unplanned events by drawing on essential knowledge and skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items

Note Successful completion of relevant vendor training may be used to contribute to evidence on which competency is deemed In these cases the alignment of outcomes of vendor training with performance criteria and critical aspects of evidence shall be clearly identified

Note:
Successful completion of relevant vendor training may be used to contribute to evidence on which competency is deemed. In these cases the alignment of outcomes of vendor training with performance criteria and critical aspects of evidence shall be clearly identified.

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include

OHS policy and work procedures and instructions

Suitable work environment facilities equipment and materials to undertake actual work as prescribed by this unit

These should be part of the formal learningassessment environment

Note

Where simulation is considered a suitable strategy for assessment conditions must be authentic and as far as possible reproduce and replicate the workplace and be consistent with the approved industry simulation policy

Evidence should show demonstrated competency in designing complex air conditioning systems

Method of assessment

This unit shall be assessed by methods given in Volume Part Assessment Guidelines

Note Competent performance with inherent safe working practices is expected in the Industry to which this unit applies This requires assessment in a structured environment which is intended primarily for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit

Note:
Competent performance with inherent safe working practices is expected in the Industry to which this unit applies. This requires assessment in a structured environment which is intended primarily for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit.

Concurrent assessment and relationship with other units

There are no concurrent assessment recommendations for this unit