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Evidence Guide: UEERA0002 - Analyse the psychrometric performance of HVAC/R systems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

UEERA0002 - Analyse the psychrometric performance of HVAC/R systems

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare to analyse psychrometric performance of HVAC/R system

  1. Work health and safety (WHS)/occupational health and safety (OHS) processes and workplace procedures for a given work area are identified and applied
Work health and safety (WHS)/occupational health and safety (OHS) processes and workplace procedures for a given work area are identified and applied

Completed
Date:

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WHS/OHS risk control measures and workplace procedures are followed in preparation for HVAC/R work

Completed
Date:

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Extent of the psychrometric issues are determined from performance specifications and situation reports and in consultation with relevant person/s

Completed
Date:

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HVAC/R activities are planned to meet scheduled timelines in consultation with other person/s involved in the work

Completed
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Strategies are formed to ensure HVAC/R analysis and solution implementation is carried out efficiently in accordance with workplace procedures

Completed
Date:

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Analyse psychrometric performance of HVAC/R system

  1. WHS/OHS risk control measures and workplace procedures for carrying out HVAC/R work are followed
WHS/OHS risk control measures and workplace procedures for carrying out HVAC/R work are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Psychrometric principles are applied to analytical solutions to HVAC/R system

Completed
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Parameters, specifications and performance requirements in relation to HVAC/R system are obtained in accordance with workplace procedures

Completed
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Analysis of HVAC/R psychrometric parameters is carried out to provide effective solutions

Completed
Date:

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Unplanned situations are responded to in accordance with regulatory requirements and workplace procedures in a manner that minimises risk to personnel and equipment

Completed
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Quality of work is monitored against performance agreement and/or workplace procedures and industry standards

Completed
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Document and report results of the HVAC/R psychrometric performance analysis and actions taken

  1. Solution/s to HVAC/R psychrometric issues are evaluated to determine their effectiveness and modified, as required
Solution/s to HVAC/R psychrometric issues are evaluated to determine their effectiveness and modified, as required

Completed
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HVAC/R analysis is documented and includes details of findings, calculations and assumptions

Completed
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HVAC/R analysis is reported to appropriate person/s to determine appropriate action to be taken based on findings

Completed
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Justification for findings and any actions to be undertaken in relation to the HVAC/R equipment is documented for inclusion in work/project or development records in accordance with industry standards and workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

understanding the psychrometric performance issues

forming effective strategies for analysing refrigeration and air conditioning systems performance

obtaining psychrometric performance parameters, specifications and performance requirements appropriate to each situation

evaluating the results of the analysis

documenting analysis details of all findings, calculations and assumptions

documenting justification of actions to be implemented in accordance with professional standards

dealing with unplanned events

applying problem-solving techniques

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures and practices, including using risk control measures

applying sustainable energy principles and practices.

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

heating, ventilation and air conditioning/refrigeration (HVAC/R) psychometrics, safe working practices and relevant standards, codes and regulations, including:

fundamentals and terms:

sensible heat factor (conditioned space and grand total)

quantity of air

effective surface temperature

bypass factor

coil characteristics:

processes

sensible cooling

cooling and dehumidification

sensible heating

spray processes:

saturation efficiency

processes

adiabatic/evaporative cooling

cooling and humidification

sensible cooling

chemical dehumidification process: dehumidification and heating

cooling tower characteristics: humidification and cooling

indirect evaporative cooling process

system analysis:

partial load

reheat control

bypass control

volume control

dump back systems

low velocity coils

psychrometric formulae and charts:

properties of air

gas constants

derivation of air constants

combined gas laws

Dalton’s law of partial pressures

carrier’s equation

psychrometric property tables

air mixing equations

air quantity equations

problem-solving techniques

psychrometric physical and thermodynamic properties of gas-vapor mixtures, including psychrometric principles

relevant job safety assessments or risk mitigation processes

relevant WHS/OHS legislated requirements

relevant workplace documentation

typical psychrometric performance issues.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

analysing psychrometric parameters of HVAC/R systems must include at least the following:

two different refrigeration and air conditioning systems