Wayne Howatt

1
Wayne Howatt
Director, Dearle Henderson
The Climate Challenge
01. Welcome
for Scottish FHE Institutions
2
Nature of Business Established Size Coverage Major
Disciplines
Property Construction Consultants 1908 300
Staff UK Wide and Oversees Design Building
Surveying Compliance Quantity Surveying Project
Management Energy Sustainability
02. Introduction
Our Company
3

• Our Commission,
• Estate Condition and Compliance Survey
• Condition of Fabric Infrastructure
• DDA Audit
• Asbestos Data
• Fire Data
• Energy Performance of Buildings in Relation to
  EU EPBD

03. Heriot Watt University Survey
The Project Background
4

• Riccarton Campus Statistics
• Approximately 100 Hectare Site
• 100 Buildings
• 170,000 Sq.M. of Floor Area
• 9000 Individual Room Spaces
• Property Age Range in Excess of 200 Years
• Very Wide Range of Building Use

03. Heriot Watt University Survey
The Project Background
5
Stage 1 Construction Data Site Survey Data
Data Capture From Drawings And
Specification Built Form Use Plant And
Equipment Real World Information Up To
Date Fabric, Condition And Use
03. Heriot Watt University Survey
The Carbon Emission Rating Process
6
Stage 2 Build 3d Geometry
Start Computer Model From Acquired
Data Floors Walls Openings Roofs Stairs Lifts
03. Heriot Watt University Survey
The Carbon Emission Rating Process
7
Stage 3 Maintenance Attach To All
Individual Spaces Components Environmental
Data
Attach Attributes To Geometry Update And Check
System Static Data Set Appropriate Settings,
Conditions, Values And Rules Building
Data Activity Data Lighting Data Heating
Data Location And Weather Model
03. Heriot Watt University Survey
The Carbon Emission Rating Process
8
Stage 4 Run Actual Run Notional Results
Simulations On Building As Built With Actual U
Values Based On Building As If Compliant With
Current Regs. (Part L 2006) Kg Carbon Dioxide
per Sq.M.
03. Heriot Watt University Survey
The Carbon Emission Rating Process
9
Stage 5 Compare Outputs Produce
Certification Log Book
Outputs Determine Relative Emissions Actual
Carbon Emission Notional Carbon Emission Relative
Emission Performance () Index Rating Against
Scale (EPBD/Relative) All Background Material
And Ancillary Data
Actual Notional
X 100 ()
03. Heriot Watt University Survey
The Carbon Emission Rating Process
10
Stage 6 Changes To Properties Future
Proposals
Maintain Model Update To Reflect Any Changes To
Relevant Features Or Attributes Future Compliance
Issue Develop Use Of Model As A Tool Assess
Value/Benefit Of Proposals A Basis For ROI
Calculations
03. Heriot Watt University Survey
The Carbon Emission Rating Process
11
04. Design Solutions
Using The Model As A Design Tool
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• Cost
• Sustainability
• Flexibility
• Future proof
• Maintenance
• Running Costs
• Security

04. Design Solutions
Environmental Engineering Requirements
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Natural / Passive Openable Windows Natural
Ventilation Stack Driven Ventilation Solar
Shading Ultra Low U Values Renewable Energy
Sources
Commercial Standard Non-Openable
Windows Mechanical Ventilation Refrigerant
Cooling Lightweight Building Standard U
Values Fan Coils VRV etc.
Low Energy Engineered Choice of Open/Non-Openable
Windows Mechanical Ventilation Renewable Energy
Techniques Peak Summer Temp. Control Innovative
Cooling Techniques
04. Design Solutions
Environmental Engineering Requirements
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Consider parkland / urban visibility -
views general arrangement Public / private
security sustainability future
flexibility internal movement natural
daylight materials custody suite
organisation operations / fsu relationships
04. Design Solutions
Conceptual Development
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Modelling Techniques
04. Design Solutions
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04. Design Solutions
Fundamental Systems Integration
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Main office accommodation on north face, which is
shaded and cool
Sealed façade to reduce noise from adjacent
highway
Potential for green roof to reduce heat gains and
improve thermal insulation
NOISE
Solar panels following the sun path could provide
a percentage of renewable energy
Ground source heat pump could provide a
considerable percentage of free energy
Fundamental Systems Integration
04. Design Solutions