Low Energy Design – Sarah Graham (Greenbuild Expo, June 2011)

Greenbuild Expo 2011

Low Energy Design

30th June 2011

Dr Sarah GrahamB Eng, C Eng MCIBSE, Eng D

UK Sales Manager

T: +44 141 945 8500

C: +44 7837 251354

[email protected]

www.iesve.com

© Integrated Environmental Solutions Ltd.

Integrated Environmental Solutions LtdFounded June 1994

Head Office in Glasgow, Scotland

offices: Dublin, Melbourne, India, Boston and San Francisco

IES representation in UK, Europe, US, Canada, Malaysia, Middle East.

software in over 140 countries; international reseller network

International sustainability consultancy from IES Consultancy Services

International software training via Authorized IES Trainers

Offices Consultants Resellers


Synopsis – Use of software in low carbon design process

• The problem - issues that designers face when pursuing low carbon design.

• The solution - vision of what the solution could be.

• Current Situation – What can be done now?

• Roadmap – what steps need to be taken to move towards the vision.

Overview

The problem

• Increasing Scope/Decreasing Fees

Fees

Scope

The problem

glazing orientation form

The solution - Collaboration

BIM f

Building

Owner f

Architecture Contractor

Civil

Engineering

Facilities

Manager

Construction

Manager

Electrical

Engineer

Mechanical

EngineerIntegrated Design

Process


Conventional design process

Building design process

Master Planning

Concept Design

Schematic Design

Detailed Design

Completion In use

Analysis

Contractors,

construction manager,

commissioning

authority, cost estimator

Mechanical, electrical,

& plumbing

Mainly architect , structural

engineer & client

Planners, client body,

community members

Architect , client,

cost consultant

A linear design

process

Users


Conventional design process

Construction

Tender documentation

Detailed Design

Schematic Design

Concept Design

Consultation

& Engagement

Project start

completion

ConstructionConstruction Documentation

Detailed Design

SchematicDesign

Time

Effort


Integrated design process

Building

desig

n

A multi-

disciplinary

design team

Concept design

Completion

process

Building

Conceptual

modelling

Predictive/incentive

modellingCompliance

modelling

A multi-disciplinary design team

•Landscape architect•Ecologist•Architect•Energy specialist•Structural engineering•Civil engineering•Mechanical engineer•Electrical engineer•Plumbing engineer•Other specialists(fire, acoustics, daylighting, controls, etc.)•Facility manager•Contractor•Construction manager•Cost estimator


Integrated design process


TraditionalEffort

Time

Constructions Documents

Detailed Design

SchematicDesign

Constructions

Key elements of integrated design process

• Multi-disciplinary collaboration between architects, engineers, contractors, cost specialists, facility managers right from the beginning of the design process

• Discussion of the various important performance issues and the establishment of a consensus on this matter between client and designers

• Budget restrictions applied at the whole building level, with no strict separation of budgets for individual building systems.

• The addition of subject specialists involved (e.g. energy simulation, daylighting, comfort, acoustics)

• Testing of various design assumptions through the use of performance analysis throughout the whole process to provide relatively objective information on this key aspect of performance

• Clear articulation of performance targets and strategies, to be updated throughout the process by the design team


Building Information Modelling

Energy Model

Composite

Model

Architectural

ModelStructural

Model

Electrical

Model

Plumbing

Model

BIM

(linked with phasing,

sequencing,

construction schedule)

Mechanical

Model

• Graphical information-3D objects visual in the model

• Non-graphical information- Performance data

• Linked information- Schedule & cost information

Cost Model

Compliance

Model

Other Model

Building

Information Model

Building Performance Model

BIM vs BPM


Master Planning

Concept Design

Schematic Design

Detailed Design

Completion In use



Climate

Locality

Site features

Nat resources

Urban form

Urban solar

Urban light

Visualise

Brief consequences

Building type

Climate & bldg type

Building form

Footprint headlines

Headline design

directions

Headline sustainability

directions

Visualise

Baseline solution

Baseline outcomes

Footprint

Scheme directions

Building solar

Building light

Renewable directions

Sustainability

directions

Basic loads

Compliance directions

Visualise

Brief refinement

Detail definitions

Systems

HVAC

Air flows

Building detail feature

design

Loads – steady state

Energy – dynamic

Plant size

Optimisation

Energy compliance

Sustainability

compliance

Certification

CFD etc studies

Visualise

Certification

Energy in use

Re-certification

Controls

Re-furbish & improve


Master Planning

Concept Design

Schematic Design

Detailed Design

Completion In use


Integrated approach to project delivery

<Virtual Environment>

model of the

Project location: Glasgow

Master

planning

What if climate

change?

2050?



Concept

design

Sketch model

VE model

VE models with different glazing percentage



Schematic

design

VE model with 20% glazing Suncast

EPC

Thermal result

Radiance

MacroFlo

Apache System



Detailed

design

CFD

HVAC Cost Plan

Suncast

Simulex

EPC

Radiance

BREEAM


Target CO2

TER

Actual CO2

DER/BER

Actual BuildingNotional Building

Compliance

Comparison Tool

Real Building

Real vs Actual Building


IDP Technology - Vision


IDP Technology - Reality

Building design process• Model input

− Design for sustainability using same tool regardless of BIM/CAD platform

Autodesk Revit

Google SketchUp Graphisoft ArchiCAD gbXML

Other gbXML

[IES Plug-ins]

IES <VE> ModelIT

gbX

ML

<V

E>

How it works:

1. Draw Geometry in Autodesk Revit

2. From the Revit Toolbar:

• Set Building Location

• Define Building Parameters:

• Building Type

• Construction Materials

• Building System Types

• Room Types

3. Launch IES VE-Toolkits/VE-Pro

4. Choose Analysis Type





Next Steps

• Raising awareness about the strengths and weaknesses of the current situation

with respect to Interoperability.

• Continue to improve the Interoperability and start to look at the ‘round-trip’

whereby we take information back into the BIM package from the analysis

package.

• Automation of parts of the process – automatic updating and re-calculation when

something changes.

• Cloud computing

• Key documents

• IGT ‘Low Carbon Construction’ report

• Cabinet Office ‘Government Construction Strategy’

• ‘BIM Working Party Strategy Paper’


Thank you …

Questions?

[email protected]