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Evidence Guide: UEERA0023 - Design hydrocarbon refrigerated 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

 

UEERA0023 - Design hydrocarbon refrigerated systems

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

Prepare to design hydrocarbon refrigeration systems

  1. WHS/OHS requirements and workplace procedures for a given work area are identified, obtained and applied
WHS/OHS requirements and workplace procedures for a given work area are identified, obtained and applied

Completed
Date:

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Scope of the refrigeration system is determined from design specifications and/or in consultation with relevant person/s

Completed
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Safety and systems are identified, obtained and applied in accordance with relevant industry standards

Completed
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Work supervisor and/or customer/s are consulted to determine functions and parameters of the system required in accordance with design specifications and workplace documentation

Completed
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Design development work is planned in accordance with workplace procedures for timelines in consultation with others involved

Completed
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Design hydrocarbon refrigeration systems

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

Completed
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Relevant hydrocarbon refrigeration system analysis, hydrocarbon refrigeration system components and piping are applied to developing the system design in accordance with workplace procedures and relevant industry standards

Completed
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Safety, functionality and budgetary considerations are incorporated in the installation design

Completed
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Equipment is selected in accordance with the design specifications and workplace procedures

Completed
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Location of components is documented in accordance workplace procedures and operation of system functions

Completed
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System design draft is checked for compliance in accordance with the design brief and relevant industry standards

Completed
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System design is documented for submission to relevant person/s for approval

Completed
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Unplanned events are dealt with in accordance with problem-solving techniques and workplace procedures

Completed
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Obtain approval for hydrocarbon refrigeration systems design

  1. System design is presented to customer and/or relevant person/s in accordance with workplace procedures
System design is presented to customer and/or relevant person/s in accordance with workplace procedures

Completed
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Requests for alterations to the design are negotiated with relevant person/s in accordance with workplace procedures

Completed
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Final design is documented and approval obtained from relevant person/s

Completed
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Quality of work is monitored in accordance with workplace procedures and relevant industry standards

Completed
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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 required operating functions and parameters from the design specification

developing the design within the safety, regulatory and functional requirements and budget limitations

documenting and presenting design effectively

successfully negotiating design alteration requests

obtaining approval for final design

dealing with unplanned events

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

designing hydrocarbon refrigeration systems

preparing to design hydrocarbon refrigeration systems.

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:

hydrocarbon refrigeration systems design, components and piping design requirements, safe working practices and relevant standards, codes and regulations, including:

technical standards, regulations and codes for hydrocarbon refrigeration systems:

standard philosophy and format

standards, regulations and codes that apply to hydrocarbon refrigeration systems

equipment manufactures specifications

hydrocarbon refrigeration system design requirements:

applications of hydrocarbon refrigeration systems:

domestic refrigerators

commercial refrigeration

thermodynamic properties of hydrocarbon

hydrocarbon phase diagram

hydrocarbon properties tables and chart

hydrocarbon refrigeration cycle:

Ph diagram representation

expansion, evaporation, compression and condensation processes

performance analysis of hydrocarbon refrigeration systems:

refrigerating effect

heat of rejection

heat of compression

coefficient of performance

effects of suction superheating on cycle efficiency

effects of liquid sub-cooling on cycle efficiency

actual hydrocarbon refrigeration cycles:

superheating inside and outside the refrigerated space

liquid-suction heat exchangers

pressure drop in piping due to friction and dynamic losses

hydrocarbon refrigeration system components and piping:

design preliminaries:

system operating parameters

project specifications

equipment selection criteria

selection tables, charts and catalogues

materials used with hydrocarbon refrigerants

heat exchanger selection:

selection of evaporators

selection of condensers

compressor selection

liquid expansion devices selection

system load balance point

refrigeration line design and sizing

automatic controls

safety:

safety data sheets (SDS)/material safety data sheets (MSDS) for hydrocarbon refrigerants

problem-solving techniques

relevant WHS/OHS legislated requirements

relevant workplace budget, quality, policies and procedures

relevant workplace documentation.

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.

Designing hydrocarbon refrigeration systems must include at least the following

two different hydrocarbon refrigerated systems

Each hydrocarbon refrigerated system design must include at least one of the following:

major component, including:

condenser

compressor

evaporator

associated components and controls