Achieving Cost Effective Sustainable MEP Solutions by Billy Jolly Head of MEP KEO International...

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Copyright 2011, by KEO International Consultants


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Bill Jolly MSc, BEng (Hons), MCIBSE, MASHRAE, LEED APKEO International Consultants - Head of MEP

KEO International ConsultantsArchitects, Engineers, Project & Construction Managers

Achieving Cost Effective Sustainable MEP SolutionsMonday 27th June 2011


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Contents Introduction

Climate Change and the Built Environment The importance of Energy and Water Conservation Availability of Green Technology in Qatar A Cost Effective Sustainable System Selection Process Utilizing Design Tools that Help Quantify Sustainable MEP Solutions

MEP Summit Qatar 2011

Achieving Cost Effective Sustainable MEP Solutions


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Introduction




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Introduction

This presentation has been prepared to firstly identify the drivers for sustainable

construction and the focuses on importance of water and energy conservation. In

order to ensure sustainable solutions the presentation looks at what technologiesare available within Qatar. The process to ensure cost effective sustainable MEP

solutions is considered along with the utilization of the tools necessary to guide

designers how to demonstrate targeted and achieve energy efficient solutions .




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Climate Change and the Built Environment




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Climate ChangeClimate change and global warming are

unequivocally the biggest and most

fundamental problems facing planetearth and mankind today. Global

warming and climate change are

expected to have a cataclysmic effect

across the globe. The worst effects of

climate change can be avoided if

greenhouse gases incorporating carbondioxide (CO2) in the atmosphere are

stabilised instead of being allowed to

increase.




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Environmental TargetsKyoto Protocol

Cut overall emissions of greenhouse gases

by 5.2% below 1990 levels by 2008-2012

Qatar

Ratified their commitment on the 11th Jan

05. Qatar is a member of the G77 andsubsequently does not have any reduction

targets as Qatar is considered a developing

country.

Qatar CommitmentQatar has a vision whereby construction projects should consider becoming

sustainable with no specific international target. Local requirements for Qsas have

been implemented to achieve this vision.


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The Importance of Water and Energy Conservation




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The Importance of Energy and Water Conservation

Energy

Energy relates to carbon which in turn is accelerating climate change The built environment contributes 50% of overall carbon emissions

LEED focuses on energy reduction (one credit most points available)

Passive and active solutions to reduce energy

Water Water in the Middle East is precious

Droughts

Water models are required to justify water conservation




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Selection Matrix Process

Potential Sustainable Options

1. Variable Air Volume (VAV)2. Fan Coil Units (FCUs)

3. Chilled Beams

Selection Criteria

Weighting factorsScoring Process

Sustainability Selection Matrix




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Sustainability Selection Matrix Process

Option Selection Criteria Capital Cost Constrains Carbon Emission and Energy Reduction Constructability Indoor Air Quality (IAQ) Maintenance System Reliability

Thermal Comfort Running / Operational Cost Acoustics Region Suitability




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ITEM CRITICALOPTION SELECTION CRITERIA WEIGHTING FACTOR TYPICAL WEIGHTING

1 Capital Cost Client to Confirm 30

2 Carbon Emission and Energy Reduction Client to Confirm 20

3 Constructability Client to Confirm 5

4 Indoor Air Quality (IAQ) Client to Confirm 5

5 Maintenance Client to Confirm 10

6 System reliability Client to Confirm 5

7 Thermal Comfort Client to Confirm 5

8 Running / Operational Cost Client to Confirm 15

9 Acoustics Client to Confirm 3

10 Region Suitability Client to Confirm 2

14 TOTAL 100% 100%




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Air Delivery - HVAC System Selection - Scoring Matrix

Capital

Cost

CO2Em

ission

/Energy

Constru

cta

bility

IAQ

Mainte

nance

System

Re

lia

bility

T

herma

lCom

fort

RunningCost

AcousticCom

fort

Region

Suita

bility

S

core

Weightings

Option Option Description Points / Total % 30% 15% 10% 5% 10% 5% 5% 15% 3% 2% 100%

Option 1 Chilled Slab/Soffit with FCUPoint Score 1 5 1 2 3 1 1 4 4 1

48%Total Percentage Score 6% 15% 2% 2% 6% 1% 1% 12% 2% 0%

Option 2 Active Chilled Beams

Point Score 2 4 2 4 5 2 5 5 5 2


Option 3 Variable Air Volume (VAV)Point Score 3 2 3 3 2 4 4 2 3 4


Option 4 Air to water Heat PumpsPoint Score 4 3 4 5 4 3 3 3 2 3


Option 5 Fan Coil UnitsPoint Score 5 1 5 1 1 5 2 1 1 5





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Availability of Green Technology




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Availability of Sustainable Technology

The Middle East is going Green / Sustainable All leading manufacturers and suppliers have green technologies available

The industry needs to ensure technologies to reduce the cost in the long term Solar collectors have very low payback periods Photovoltaic panels are expensive and hence longer payback periods Solar chillers (Absorption chillers with solar collectors) Building Thermal Mass Storage Systems


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Passive / Architectural Sustainable Solutions

Brie-SoleilShading

Green Roofs

Shading Co-Efficient

Triple Glazing

Air Tight Buildings

Intelligent Facades




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Typical Available MEP Sustainable Solutions

Wind TurbinesPhotovoltaic Panels

Solar Collectors

Absorption Cooling

Natural Ventilation

Wind Catchers

Grey Water Harvesting

Automatic Lighting Control

Heat/Cooling Recovery AHUs




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Utilizing Design Tools that Help QuantifySustainable MEP Solutions




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Utilizing Design Tools that Help Quantify Sustainable MEP Solutions

Energy modeling, or energy simulation, is a method for predicting the energy

consumption of a building. The analysis considers the buildings numerous thermal

characteristics including the materials of the walls and rest of the building envelope,

the size and orientation of the building, how the building is occupied and operated, and

the local climate.




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Conclusion

PDO

Greywater Implementation Presentation


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Conclusion Climate Change and the Built Environment The importance of Energy and Water Conservation

Availability of Green Technology in Qatar A Cost Effective Sustainable System Selection Process Utilizing Design Tools that Help Quantify Sustainable MEP Solutions




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Thank You for Listening

Bill Jolly MSc, BEng (Hons), MCIBSE, MASHRAE, LEED APKEO International Consultants - Head of MEP

KEO International ConsultantsArchitects, Engineers, Project & Construction Managers

For More Information on KEO, visit our website at www.keoic.com
http://www.keoic.com/http://www.keoic.com/

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