Wayne Howatt

Wayne Howatt

01. Welcome The Climate Challenge

Director, Dearle & Henderson

for Scottish FHE Institutions

Nature of Business

Established

Size

Coverage

Major Disciplines

02. Introduction

Property & Construction Consultants

1908

300+ Staff

UK Wide and Oversees

Design

Building Surveying

Compliance

Quantity Surveying

Project Management

Energy & Sustainability

Our Company

03. Heriot Watt University Survey The Project Background

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

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

Stage 1

Construction Data

Site Survey Data

03. Heriot Watt University Survey

Data Capture

From Drawings And Specification

Built Form

Use

Plant And Equipment

Real World Information – Up To Date

Fabric, Condition And Use

The Carbon Emission Rating Process

Stage 2

Build 3d Geometry


Start Computer Model

From Acquired Data

Floors

Walls

Openings

Roofs

Stairs & Lifts


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


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.


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

NotionalX 100 (%)

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


04. Design Solutions Using The Model As A Design Tool

• Cost

• Sustainability

• Flexibility

• Future proof

• Maintenance

• Running Costs

• Security

Functional

ValueSustainable

3 Possible Routes

04. Design Solutions Environmental Engineering Requirements

04. Design Solutions Environmental Engineering Requirements

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 Conceptual Development

Consider

parkland / urbanvisibility - viewsgeneral arrangementPublic / private– security

sustainabilityfuture flexibilityinternal movementnatural daylightmaterials

custody suite organisationoperations / fsu relationships

Modelling Techniques04. Design Solutions

04. Design Solutions Fundamental Systems Integration

Fundamental Systems Integration

Main office accommodation on north face, which is shaded and cool Sealed façade to reduce noise

from adjacent highway

NOISE

Solar panels following the sun path could provide a percentage of renewable energy

Potential for green roof to reduce heat gains and improve thermal insulation

Ground source heat pump could provide a considerable percentage of free energy

04. Design Solutions

Wayne Howatt

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