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Evidence Guide: UEERA0024 - Design hydronic systems and select equipment

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

 

UEERA0024 - Design hydronic systems and select equipment

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

Prepare to design hydronic systems and select equipment

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

Completed
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Scope of the proposed hydronic system is determined from the design brief and/or consultations with relevant person/s

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

Completed
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Design hydronic systems and select equipment

  1. Relevant hydronic system processes and methods are applied to the design
Relevant hydronic system processes and methods are applied to the design

Completed
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Alternative concepts for design are evaluated in accordance with the design brief

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

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 hydronic system design and equipment selection

  1. System design is presented to customer and/or relevant person/s
System design is presented to customer and/or relevant person/s

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 in accordance with workplace procedures

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:

developing outlines of alternative designs

developing the design within the safety, regulatory, 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 (WHS/OHS) requirements, including using risk control measures

designing hydronic systems and selecting equipment

preparing to design hydronic systems and select equipment.

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) hydronic system design, safe working practices and relevant standards, codes and regulations, including:

hydronic system design fundamentals:

principles of fluid flow

properties of fluids

flow of ideal fluids

fluid flow equipment

Bernoulli Theorem

fluid flow in pipes

pressure loss and static head – calculation:

flow throughout system

pressure throughout system

friction losses

pressure loss charts for: copper, steel and unplasticised polyvinyl chloride (uPVC)

dynamic losses

fitting pressure losses

fitting interaction

total losses

calculating system (static and dynamic) head

pump performance and selection:

pump classification and types

pump performance terminology, discharge, head, power, efficiency, speed and net positive suction head required

pump performance curves

pump laws

system head and ‘K’ factor

balance points

energy considerations

pump cavitation

calculation of net positive suction head available

series and parallel operation

pipe sizing:

maximum friction rate

erosion and equipment life

industry standards

recommended system water velocities

economic balance - first cost and operating cost

hot water systems:

boilers

coils

expansion tanks

pumps and characteristics curves

control valves, types and flow diagrams

air purge points

water treatment

pipe anchors and expansion joints

chilled water systems:

chillers

coils

expansion tanks

pumps and characteristics curves

control valves, types and flow diagrams

air purge points

water treatment

pipe anchors and expansion joints

HVAC/R hydronic systems:

systems operation

closed/open systems

pump head/lift and static head (high-rise building)

system friction losses

nett positive suction head

system curves

pumps:

types

selection criteria

performance characteristics

bladder tanks

coil characteristics

heat exchangers: plate, shell and tube, and tube in tube

flow measurements: types

flow switchers

builders: types and performance characteristics

cooling towers: elementary cooling thermodynamics and types

valves - flow control devices:

types and applications

throttling characteristics

flow measurements

selection and applications

hydronic system configuration and design:

piping configurations

single pipe closed circuit

two pipe closed circuit

direct return

three pipe closed circuit with reversed return

three-way diverting valves

risers and headers

component location

evaluation of piping configurations:

capital cost

owning and operating costs

noise vibration

maintenance

future expansion

commissioning and balancing

operating characteristics

cavitation

system pipe sizes:

pipe dynamic and friction losses for different materials

fitting pressure losses for different materials

thermal heat losses

bare, insulated and underground pipes

air conditioning system design

problem-solving techniques

relevant job safety assessments or risk mitigation processes

relevant manufacturer specifications

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 hydronic systems must include at least the following:

two different hydronic systems