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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Calculate heat transferred from/to items
   • Calculate conductive heat transfer to/from an object
   • Calculate convective heat transfer to/from an object
   • Calculate radiative heat transfer to/from an object
   • Calculate combined heat transfer to/from an object, including resistances in series and parallel
2. Calculate temperature change caused by a change in heat content
   • Calculate temperature change caused by heating/cooling of polymer compounds in typical examples of processing equipment
   • Calculate change in heat content caused by shear on a polymer compound
   • Calculate temperature rise caused by shear on a polymer.
3. Select appropriate heating and/or cooling mechanism for an application
   • Compare rates of heat transfer/overall heat transfer coefficients for major methods of heating and cooling
   • Determine appropriate methods of varying/controlling rates of heat transfer
   • Calculate heat transfer rates under a range of conditions
4. Determine heating required to suit process conditions
   • Determine heating requirements to obtain correct viscosity for processing
   • Select appropriate heat transfer mechanism(s) to achieve desired conditions
5. Conduct energy balance over process components
   • Determine overall heating load for process components
   • Determine overall cooling load for process components
   • Determine the adequacy (or otherwise) of the process/plant heating/cooling system to cope with this

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.
Regulatory framework	The latest version of all legislation, regulations, industry codes of practice and Australian/international standards, or the version specified by the local regulatory authority, must be used. Applicable legislation, regulations, standards and codes of practice include: health, safety and environmental (HSE) legislation, regulations and codes of practice relevant to the workplace, materials and processes being used and products being made Australian/international standards relevant to the materials being used and products being made any relevant licence and certification requirements. All operations to which this unit applies are subject to stringent HSE requirements, which may be imposed through state/territory or federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and such requirements the legislative requirements take precedence.
Procedures	All operations must be performed in accordance with relevant procedures. Procedures may be written, verbal, visual, computer-based or in some other form. They include one or any combination of: test procedures technical specifications technical drawings emergency procedures work instructions standard operating procedures (SOPs) safe work method statements (SWMS) formulas/recipes batch sheets temporary instructions any similar instructions provided for the smooth running of the plant.

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and demonstrate the ability to:

read and interpret test results, technical information, equipment specifications and instruments/control panels

calculate heating/cooling loads of processing equipment/components

calculate temperature changes due to changes in heat content

select appropriate heating and/or cooling mechanism for an application

determine heating requirements for process conditions

determine heat/cooling

calculate energy balance

perform complex algebraic equations, non-linear functions and simultaneous equations

interpret non-linear graphs.

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Knowledge Evidence

Must provide evidence that demonstrates knowledge relevant to their job sufficient to fulfil their job role, including knowledge of:

heat transfer principles and calculations

effects of heat/temperature on the materials being processed and the products being made

conduction, convection and radiation

thermal properties of materials, particularly polymers

methods of heating polymer materials

combined conduction/convection

specific heat capacity

mechanical work/heat relationships

cooling systems

energy balances

organisation procedures relevant to the work environment/job role

hierarchy of control

hazards that may arise in the job/work environment and:

their possible causes

potential consequences

appropriate risk controls.

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