Manitoba Hydro’s New Corporate Headquarters...Lux • 1% = 100 Lux Climatic Responsive Design...

Meet Business Needs

Energy Efficient/Sustainable

Signature Architecture

Maximum Benefit to Downtown Winnipeg

Cost Effective

Vision:

Manitoba Hydro’s New Corporate

Headquarters

Manitoba Hydro Downtown Office BuildingLEED Scorecard

Requirements for Achieving a Green, Power Smart Building

Vision

Performance Goals

Integrated Planning

Integrated Design Process

CLIENT

DESIGN ARCHITECT

ARCHITECT OF RECORD

CLIMATE ENGINEER

ADVOCATE ARCHITECT

CONSTRUCTION MANAGER

STRUCTURAL ENGINEER

MECHANICAL & ELECTRICAL ENGINEERS

LANDSCAPE DESIGN

OFFICE INTERIOR DESIGN

GEOTECHNICAL

LIFE SAFETY

ENVELOPE

ELEVATOR

ACOUSTICS

SPECIALTY LIGHTING

QUANTITY SURVEYOR

CIVIL / TRANSPORTATION

ENERGY ADVISOR

Manitoba Hydro

Kuwabara Payne McKenna Blumberg Architects

Smith Carter Architects and Engineers

Trans Solar Energietechnik

Prairie Architects

PCL Constructors

Halcrow Yolles / Crosier Kilgour

Earth Tech Canada

Hilderman Thomas Frank Cram / Phillips Farevaag Smallenberg

Marshall Cummings/IBI Group / Number Ten / LM Architectural Group

UMA Engineering / Dyregrov Consultants

Leber Rubes

Brook Van Dalen / Crosier Kilgour

Soberman Engineering

Aercoustics

Pivotal Lighting

Hanscomb

Wardrop / N D Lea

Natural Resources Canada

Integrated Design Process Team

Design Model

Energy & Sustainability

Model

Cost Model

Quality of Workspace

Thermal comfort

Supportive Workplace Productivity Drivers

Source : The Costs and Benefits of Green Buildings – A Report to California’s Sustainable Building Task Force, October, 2003

Supportive Workplace Productivity Drivers

Source : The Costs and Benefits of Green Buildings – A Report to California’s Sustainable Building Task Force, October, 2003

• individual ventilation control• air quality• indirect/high quality artificial light• daylight

Studies support that an individual has a higher level of comfort when:

Winnipeg Climate Conditions

Climatic Responsive Design Weather Analysis

Source : Transsolar Klimaengineering

70 K !

Climatic Responsive Design Weather Analysis

Source : Transsolar Klimaengineering

Climatic Responsive Design Weather Analysis

Source : Transsolar Klimaengineering

Humidity levels

Climatic Responsive Design Weather Analysis

Source : Transsolar Klimaengineering

How to utilize these climatic factors to achieve comfort and energy efficiency (the goal of a 60 % energy reduction (MNECB)?

Different approaches for a low energy building design: closed box vs. breathing buildings

CLIMATIC RESPONSIVE DESIGNIndigenous Architecture

Thermal Active SlabsThermal Active Slab SystemConventional System

Displacement Ventilation

Displacement Ventilation Air Pattern

Displacement Ventilation Air Pattern

Green Roof

> 6%

5.5%

0%

0.5%

1.0%

1.5%

2.0%

2.5%

3.0%

3.5%

4.0%

4.5%

5.0%

Daylight factor office area, scale 0 - 6%, floor to floor height 4.0 m

Daylight Factor

Source : Transsolar Klimaengineering

• Floor to Floor = 4.0m• Outside Insolation = 10,000

Lux• 1% = 100 Lux

Climatic Responsive Design

Climatic Responsive Design Buffer Zones

Atria Double Facade

Quality of Buffer Zones

Solar chimneyprovides naturalexhaust

North atrium (used as a cafeteria(18 - 28 °C)

3 story)

South atrium (6used as a semi-conditionedcafeteria / meeting space(10 - 35 °C)

story)

Double facadeused as a buffer zoneprovides natural ventilation(0 - 40 °C)

Atrium

Climate and energy concept: summerSix story tower module

naturally-driven exhaust

via north atria

through solar chimney

fresh air supply through facade

solar shade and high openings remove solar gains

chilled water fall for cooling anddehumidification

supply air 17 - 21°C

slab cooling

-

-

-

-

-

-

+

+

+

+

+

+

20°C - 30°C

20°C - 30°C

16°C - 40°C

per module fresh air supply unit deactivated

per floor air handling units for fresh air distribution

highly efficient heat recovery from exhaust to fresh air

Climate and energy concept: wintersix story tower module

exhaust air into north atria and solar chimney

central exhaust fan & heat revovery coil

exhaust air for parkadeheat and ventilation

4°C

18°C - 23°C

solar chimney

solar preheating of supply air

water dispersion and water fall for humidification

auxillary heating for extreme winter conditions

10°C

slab heating

+

-

-

-

-

-

-

+

+

+

+

+

+

18°C - 23°C

10°C - 20°C

supply air 18 - 22°C

per module fresh air supply unit

per floor air handling units for fresh air distribution

facade closed in winter

Source : Transsolar Klimaengineering

office space21 - 24 °C

exhaust air to north atrium/solar chimney

fresh air supply via operable window

facade cavity(12 - 25 °C)

Climate and energy concept: shoulder seasons

Energy Usage

• All Canadian Buildings 572 kWh/meter squared

• New Buildings in Canada 479 kWh/meter squared

• MNECB 258 kWh/meter squared

• CBIP 194 kWh/meter squared

• Downtown Office Project 91 kWh/meter squared

Climatic Responsive Design

Portage Avenue

Graham Avenue

Thank you

Any questions?