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1

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by

Gregory Wilkie

on 4 May 2017

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Transcript of 1

- P
+ P
THE LARGEST CONTRIBUTOR TO THE ENVIRONMENTAL CRISIS
2035
Present
Capital Costs
Operations Costs
Capital Costs
Operations Costs
Cost
PRODUCTION GROWTH OVER TIME
GENERATION, TRANSMISSION AND DELIVERY PROCESS
CFD MODELING SPECIFICATIONS
Boundary Condition
Domain extents
Mesh
MESH INDEPENDENCE STUDY
Modeling Pressure Drop Across The Turbine
CO2 AVOIDANCE
PEAK ENERGY PRODUCTION
COST AVOIDANCE
NETZERO ENERGY AREA
INTRODUCTION
PROCESS
RESULTS
Bluff bodies:
Aerodynamic bodies:
Flow separation
Wake
Pressure drop

No separation
Negligible wake
No Pressure Drop
Pearl River Tower
Guangzhou

Curve fitting
Velocity
Gage Pressure
Run 4
Curve fitting
Velocity
Gage Pressure
Run 4
Curve fitting
Velocity
Gage Pressure
Run 4
Curve fitting
Velocity
Gage Pressure
Run 4
Curve fitting
Velocity
Gage Pressure
Run 4
Selected Cities
Annual wind patterns significantly influence the choice of BIWT typology for a location.


A greater power coefficient for a BIWT does NOT guarantee a greater annual energy production.


The use of power coefficient to inform the design process, while disregarding local wind pattern and terrain might me misleading.


Assessment of Annual Energy Enhancement for Tall Building Integrated with Wind Turbines (BIWT)
Project WEB,
European research
Research Project
Courtesy of
Peter Land
Research Project
Courtesy of
Peter Land
World Trade Center
Bahrain

Strata SE1 Tower
London
Energy Demand
Emission
Energy Security
SIGNIFICANCE OF WIND
EIA, 2010, UN, Population Division, EPA, 2010
SIGNIFICANCE OF TALL BUILDING INTEGRATION

Accessing Greater Velocities
Massive Concentrator
Effect
Minimized Transmission losses
ADDRESSING THE PROBLEM
Wind velocity escalates as altitude rises
WIND POWER CONTENT & WIND TURBINE
HISTORICAL WEATHER DATA
Contains a year of
hourly
data (8,760 hours) to refer to long-term local climatic trends
AERODYNAMIC CLASSIFICATION

Temperature profile
Pressure profile
Altitude
Horizontal Axis
Vertical Axis
Hybrid
Hourly Data
EPW Data is collect at reference height of 10m above the ground
VELOCITY PROFILE
EXTRAPOLATION OF WEATHER DATA
BUILDING INTEGRATED WITH WIND TURBINES

ENVIRONMENTAL AND ECONOMIC ASSESSMENT
MATH / PROCESS
A TOOL FOR EARLY DESIGN
CONCLUSION
70%
Source Energy Loss For Electricity Generation
6.5%
US Transmission Losses
Bluff Concentrator
Aerodynamic Concentrator
Combined Concentrator
BIWT TYPOLOGY
EXISTING ANALYSIS TECHNIQUES
2.
Computational Fluid Dynamic
3.
Wind Tunnel Testing
1.
Mathematical Analysis
Limitation?
CPU/Time
Limitation?
Cost
Time
AIR DENSITY PROFILE
Altitude
Case Studies
RESULTS SUMMARY
Airfoil Concentrators:
Suitable for the locations with prevailing wind direction.
20%
to
49%
annual energy increase
Combined Concentrators:
Suitable for the locations with diverse wind patterns.
30%
to
37%
annual energy increase
Airfoil Concentrators:
Suitable for the locations with prevailing wind direction.
Maximum
15%
annual energy increase
Limitation?
Inaccurate
Early Design Application?
EXISTING METHODS
UNSUITABLE FOR EARLY DESIGN
Building Orientation
Turbine Height
Site & Terrain
Data
Wind Regime
BIWT TYPOLOGY
ANALYSIS METHOD
CASE 1
CASE 2
CASE 3
CASE 5
CASE STUDIES' POWER COEFFICIENT
CASE 4
Bluff Concentrator
Aerodynamic Concentrator
Combined Concentrator
PART 2:
THE TOOL DATABASE

PART 1:
A TOOL FOR EARLY DESIGN

SINGLE SIDED
DOUBLE SIDED
BIWT ACCELERATOR TYPES
NUZZLE / DUCT
SINGLE SIDED
THANK YOU!
Full transcript