Energy Efficient Design

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Energy Efficient Design
Energy Efficient Design
Presented by Ken Bruton BE MEngSc MIEI
Presented by Ken Bruton BE MEngSc MIEI
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My Background

• RPS Energy Team in Cork
• SEI SME Advisor
• Provide Energy consultancy support to large
  industry
• Implement IS393 Energy Management Systems
• Six Sigma Green Belt
• Sit on the SEI working group on Energy Efficient
  Design (EED)
• Currently writing an EED guideline methodology
  document for large industry

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Why is EED not utilised extensively?

• Tight budgets and schedules
• Extra design time required
• More emphasis placed on reducing capital costs
  rather than reducing subsequent operational costs
• Possible legal ramifications

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Why undertake EED?

• Savings potential far higher at design stage
• Lower project capital operating Costs

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EED MethodologyConcept

• Work from the Energy service out
• Challenge design standards
• Select integrated efficient system choices
• Optimise Control strategies to minimise energy
  use
• Maximise component efficiencies
• Maintain system efficiently through commissioning
  and operation
• Validate savings through efficient MT

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EED MethodologyProject Organisational Structure
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EED Key IndividualsEnergy Sponsor

• Imperative to the success of the EED process
• Must have senior management commitment to remove
  barriers to success
• Ensures EED methodology followed for the duration
  of the project by all project participants

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EED Key Individuals Energy Co-ordinator

• Critical to EED process
• Independent Reviewer outside of project
  constraints
• Must be knowledgeable of all engineering
  disciplines
• Challenges energy service requirements
• Lifetime costs each opportunity for energy
  efficiency improvement
• Identifies new technologies which could be
  utilised in place of standard solutions
• Must be involved from initial design stages for
  most effect but can carry out an EED review at
  any project stage using the 3-step approach

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EED Methodology3 Step Approach

• Calculate Energy Baseline
• Calculate the project Energy Baseline at the
  earliest design phase possible in order to focus
  EED resources on significant energy using areas
• Analyse
• Challenge the Proposed Design and develop a
  prioritised Energy Savings Register of
  Opportunities based on the significant energy
  using areas
• Agree Implement
• Agree which items on the Energy Savings Register
  should be carried forward into the next phase of
  the design process for implementation

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EED MethodologyStep 1 Project Energy Baseline

• Formulate an energy baseline of the project based
  on the information available at the earliest
  design phase possible
• This aids in the identification of the
  significant energy using areas of the project
• Focus EED efforts on these areas for most effect

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EED MethodologyStep 2 Analyse

• Challenge energy service requirements and system
  integration of these significant energy using
  areas
• Compile a list of energy saving opportunities
• Calculate the before and after EED operational
  costs associated with these opportunities
• Prioritise opportunities for progression based on
  economic, environmental or company specific
  requirements

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EED MethodologyStep 3 Agree Implement

• Project Team should agree on the energy saving
  opportunities progressed to the next stage of
  design
• If barriers to this agreement are met within the
  project team, the energy co-ordinator should have
  access to senior management via the investor
  energy sponsor to progress relevant items
• Opportunities progressed from one design stage to
  the next should require a change control to
  remove them from the project scope.
• Energy Efficient User Requirement Specification
  should be furnished to prospective suppliers

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Supplier URS

• Extremely important document as it instructs
  project suppliers/contractors in the EED
  requirements of the project
• This document should specify standards used by
  design team
• It should also specify the minimum requirements
  of the project in terms of
• Rating of motors to be utilised in building
  services
• Minimum lighting efficiency in terms of
  lumens/watt
• Temperature/humidity requirements of a space
• Minimum Boiler Efficiency
• Control strategy incorporated etc.

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Concept/Basic Design PhaseTypical EED Actions

• Challenge Energy Service Requirements
• Consider project holistically
• Calculate operational costs over lifecycle of
  project
• Investigate opportunities for heat recovery and
  system integration
• Tailor control strategy to end user requirements
• Facilitate the setback of systems in line with
  production patterns

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Detail Design PhaseTypical EED Actions

• Improve the efficiency of each system component
• Reduce energy waste

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Tendering and Construction PhaseTypical EED
Actions

• EED Project team must be vigilant of
• Value engineering energy efficiency improvements
  off the project
• Product substitutions due to cost/lead time
• Reducing Costs/Staying on Schedule
• Energy Co-ordinator review imperative at each
  stage of project

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Operational PhaseTypical EED Actions

• Utilise effective MT as a means to validate and
  maintain project performance
• Ensure system users are aware of performance
  parameters

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Engineering Tools for EED

• Needs Analysis
• Six Sigma
• Pinch Analysis
• Financial Analysis Tools
• Value Engineering etc.

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Key Points

• Achieving client buy in can prove difficult
• Energy Champion support for Energy Co-ordinator
  key to success of EED project
• SEI Working group on EED to publish guideline
  document early 2009

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Thank You

• Ken Bruton BE MEngSc MIEI
• Ken.Bruton_at_rpsgroup.com