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Elements and Performance Criteria

1. Prepare to develop specifications for exchanger designs
   • Work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures for a given work area are identified, obtained and applied
2. WHS/OHS risk control measures and procedures are followed in preparation for the work
3. Scope of analysis to develop specifications is determined from design brief, relevant reports and/or consultations with relevant person/s
4. Activities are planned in accordance with workplace procedures for timelines in consultation with others involved in the work
5. Strategies are formed to ensure analysis is carried out in accordance with workplace procedures and relevant industry standards
6. Develop specifications for exchanger designs
   • WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
7. Relevant refrigeration parameters are applied to developing heat exchanger specifications in accordance with workplace procedures and relevant industry standards
8. Parameters and performance requirements in relation to refrigeration systems are obtained in accordance with workplace procedures and relevant industry standards
9. Refrigeration parameters are analysed to provide effective solutions in accordance with workplace procedures
10. Unplanned events are dealt with in accordance with problem-solving techniques and workplace procedures
11. Quality of work is monitored in accordance with workplace procedures and relevant industry standards
12. Document specifications for exchanger design
    • Analysis, findings, calculations and assumptions are documented in accordance with workplace procedures
13. Specifications for heat exchanger are developed from analysis findings and in accordance with workplace procedures
14. Developed specification and analysis is reported to relevant person/s for endorsement in accordance with workplace procedures
15. Justification for findings and actions undertaken in relation to the design is documented in accordance with workplace procedures and relevant industry standards for work/project and/or development records

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.
Developing specifications for heat exchangers must include at least the following:	two different designs

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Performance Evidence

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:

interpreting compliance documents setting up and conducting appropriate examinations and tests identifying non-compliance defects reporting examination and test results and non-compliance issues clearly and accurately applying relevant work health and safety (WHS)/occupational health and safety (WHS/OHS) requirements, including using risk control measures developing specifications for exchanger designs documenting specifications for exchanger designs identifying analysis, findings, calculations and assumptions preparing to develop specifications for exchanger designs reporting findings and actions.

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Knowledge Evidence

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:

heat exchanger design, safe working practices and relevant standards, codes and regulations, including: advanced thermodynamics: heat transfer: modes of heat transfer conduction through a flat plate, series flat plates, thick and thin wall pipe, and composite pipes (e.g. lagged pipes and drums) convection at a flat surface or tube radiation from a flat surface or tube for black or grey bodies combined conduction and convection through single or multiple flat plates or thin wall tubes combined convection and radiation combined conduction, convection and radiation such as fluid in a tank (convection to wall), through wall and/or insulation (conduction) to outside air (convection and radiation) heat exchangers - parallel, counter flow and cross flow refrigeration/heat pump: basic principles and terminology vapour compression cycle performance criteria types of refrigerant - designation, properties advantages and disadvantages refrigerant properties using the pH diagram ideal vapour compression cycle on the pH diagram energy balance and heat transfers in compressor, evaporator and condenser actual vapour compression cycle and variations from the ideal pressure loss in lines and non-ideal compression superheating and subcooling with or without suction/liquid heat exchanger Carnot principle applied to refrigerator and heat pump principles of evaporative refrigeration, absorption refrigeration, air cycle refrigeration and thermo-electric refrigeration heater exchanger design: concepts design parameters and limitations construction material and components testing requirements problem-solving techniques relevant job safety assessments or risk mitigation processes relevant manufacturer specifications relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace quality, policies and procedures.

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