renewable energy opportunities with infrastructure projects · pdf filerenewable energy...
TRANSCRIPT
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Renewable Energy Opportunities
with Infrastructure Projects Tony Amis Tony Amis
Business Development Director
December 2014
© GI Energy
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Contents
• The GI Energy Journey
• Ground Sourced Heat Pumps
• Geothermal solutions
• Energy Foundations & Opportunities In the UK
• Benefits of Using Energy Foundations
• Case Study – Crossrail• Case Study – Crossrail
• What are the issues Installing loops into Foundations
• Good Design practice
© Geothermal International
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The Journey to GI Energy
Wednesday, 03 December
20143
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GI Energy Today
GSHPASHP CHP
Our Unique Skills & Experience allow
us to Deliver Bespoke Solutions via a
Diverse Technology Portfolio
Bringing the Elements Together as a
Wednesday, 03 December
2014© GI Energy 4
Controls Solar
Power
CorrectionBiomassDemand
Reduction
Bringing the Elements Together as a
Coherent Whole increases benefits
Commitment to an on-going energy
partnership for the long-term
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GI Renewable Energy Solution
GI ENERGY
Supply & Management
Solar PV
CHP
Solar Thermal
ELECTRICAL POWER
HIGH GRADE HEATING
Waste
Heat
Recovery
30
% R
en
ew
ab
le E
ne
rgy
Low
Ca
rbo
n S
olu
tio
nAim
Long Term System Optimisation
Maximising CO2 & Run Cost Savings
Wednesday, 03 December
2014© GI Energy 5
GSHP’s
Other (process)
Boilers
Chillers
COOLING
LOW GRADE HEATING
TOP UP & OR BACK UP
10% - 200%+
Recovery
20
-30
% R
en
ew
ab
le E
ne
rgy
Low
Ca
rbo
n S
olu
tio
n
Thermal
Storage
Free
Cooling
Co
nv
en
tio
na
l
PRE HEATING
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Our Skills for Your Benefit
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Primary circuit options for GSHP systems
Systems can be combined to give optimal solution
Open Loop SystemClosed Loop Systems
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Ground Sourced Heat Pump (GSHP) Principle
� Pass a fluid through a constant 12o
temperature ground:
− A cooler fluid will increase in
temperature, (used for heating)
− A warmer fluid will decrease in
temperature (used for cooling)
TrinityHaus colloquium
Geothermal heat flow(0.06 W/m2)
Solar /atmospheric energy(10’s -100’s W/m2)
Ground Temperature 10o -12o
temperature (used for cooling)
� The magnitude of this temperature
differential is around 3o-5o
� Need to maintain this differential for
gshp system viability
� Designed to be maintained with
seasonal heating and cooling cycles
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Ground sourced heat pump system
HEAT
Compressor
Pump
SECONDARY CIRCUIT(Building)
Warm
HotHot
50o
10o
HeatExchanger
TrinityHaus colloquium
HEAT PUMP
Expansion valve
Pump
SOURCE CIRCUIT(Geothermal piles)
Cool
WarmWarm
Cool W
arm
System is reversible allowing for both heating and coolingOOC Heating load 965,841kWhth 42% of Building RequirementOOC Cooling Load 557,536kWhtc 100% of Building Requirement
6o
30oHeatExchanger
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CHP Improvements when integrated with GSHP’s
5% FLUE LOSSES
5% INTERNAL
LOSSES
Waste heat
Capture
Energy Piles GSHP
10% FLUE LOSSES
Wednesday, 03 December
2014© GI Energy
30% ELECTRICITY50% HEAT
Surplus Heat
Storage
Energy Piles
/BoreholesGSHP
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• Offices
• Hotels
• Individual Homes
• Apartment Buildings
• Schools
• Hospitals
• Manufacturing
• Sports Centers
Geothermal has Been successfully applied to:
• Apartment Buildings
• Supermarkets
• Residential
Developments
• Sports Centers
• Agriculture
• Government Buildings
• Stately Homes
• Railway Stations
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Vertical Loop Under Buildings
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B&Q Superstore, New Malden
• System:
• Vertical, Closed Loop
• Beneath the Building
• Size:
• 549kW Cooling
• 659kW Heating• 659kW Heating
• Collector type:
• 120 boreholes
• Depth 100m
• Completed:
• 2008
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Energy Piles®
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Benefits of using EnergyPiles ® / Energy Walls®
� Piles have dual functionality – structural and as energy source
� One of the cheapest sources of ground energy
� Relatively low extra over cost to use the piles (depends on technique)
Slide 15
on technique)
� Minimal impact on piling program
� Provides a Stable & Sustainable renewable energy
• Advantage for BREEAM / LEED buildings
• Reduces CO2 emissions to the atmosphere.
• UK Energy foundations saving circa 7,000T /annum
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52 Energy Pile Installations In the UK
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Geothermal Loops Have Now Been Installed Successfully In
All Foundation Types
� Small / large diameter bored piles –
Westminster Academy / One New Change/ US Embassy
� Piles under bentonite or dry bore – Bankside London
� CFA piles - Canterbury University/ Belfast Police station
� Driven Cast In-situ piles. North Kent Police Station
� Driven Precast Piles – Balmore Glasgow & Bristol
� Diaphragm walls - Bulgari Hotel Knightsbridge / Crossrail Stations
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Installing the Loops
Loop Reeler
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CFA Piles, Hauser Forum Cambridge
• Pile design – Mott MacDonald
• Pile Contractor – Bachy
• Loop design / build – GIL
• CFA piles (600mm dia) 149 No up to
25m depth
• Loops - 4 pipes x 40mm dia Plunging used 40mm bar + 4 pipes (2 loops)• Loops - 4 pipes x 40mm dia
• Pushed with 1 x 40mm bar
• Heating - 188kW
• Cooling - 117kW
Plunging used 40mm bar + 4 pipes (2 loops)
Trimming Cage and header pipes
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Westminster Academy
• System:
• EnergyPiles™
• Size:
• 331kW Heating
• 120kW Cooling• 120kW Cooling
• Collector type:
• 260 No Rotary bored Piles depth 15 -20m
• Completed
• 2008
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Energy Piles & Closed loop
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Energy Piles & Dry Coolers
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North Kent Police PFI
• System:
• Energy Piles, Closed Loop & Dry
Cooler
• Size:
• 550kW Heating
• 1,350kW Cooling
• Collector type:
• 250 Piles to 23m
• 80 Bores to 100m
• Operational Since 2008
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Energy Piles & Open loop
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One New Change, London
• System:
• Piles & Open Loop
• Size:
• 1,638kW Heating
• 1,742kW Cooling
• Collector type:
• 219 Energy Piles
• Open Loop Wells
• Operational 2010
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ONC Cage Design
� Three sections of reinforcement cages to join
� One continuous length of geothermal loop inside each pile
� Loops filled with water and pressurised for installation
© Geothermal International
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One New Change, London
© Geothermal International
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ONC Energy Pile – Loop Installation
© Geothermal International
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One New Change- Headering Work
© Geothermal International
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Completed Plant Room
Computer driven according to various
scenarios
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Bulgari Hotel - First Energy Diaphragm Wall Project in UK
• System:
– Diaphragm Wall & Energy Piles®
• Size:
– 150kW Heating
– 150kW Cooling– 150kW Cooling
• Collector type:
– 50 Energy Piles
– 150m Energy D. Wall
• On Site:
– Commissioned 2012
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Bulgari Hotel Knightsbridge / Crossrail Station Box
Schematic
© Geothermal International
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Crossrail Stations London
• System:
– Diaphragm Wall & Energy Piles®
• Size:
– 150kW-300kW Heating
– 150kW-300kW Cooling– 150kW-300kW Cooling
• Collector type:
– Energy Piles
– Energy D. Wall
• On Site:
– Farringdon Street
– Tottenham Court Road
– Bond street
– Fisher Street
– Paddington
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Anticipated CO2 Savings at Crossrail
Contract
Heating peak power
Cooling peak power
CO2Savings
(T/Annum)
(kW) (kW)
Paddington Integrated 420 240 200
Bond St WTH 186 186 28
Bond St ETH 340 340 49
TCR West 160 160 21TCR West 160 160 21
TCR East 75 75 9
Fisher St 60 60 10
Liverpool St – Blomfield 150 80 11
Liverpool St – Moorgate 70 25 14
Farringdon West 120 120 16
Farringdon East 90 90 12
Totals 1,671 1,376 370
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Crossrail and Geothermal
Slide 36
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Crossrail - Bond Street Station
Eastern Ticket HallEastern Ticket Hall
Western Ticket Hall
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Bond St ETH Elevation
Ground Level
Thermal piles
30m
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Bond St ETH
GI Energy Design
� 57 Thermal pile
� 1.8m diameter
� 67m deep
� 6 loops per pile
� 30m Effective length due to deep cut off
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Bond St ETH
Access tunnels
Thermal piles at base of shaft
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Bond St WTH
GI Energy Design�14 Thermal piles� 2.5m diameter � 20m deep � 6 loops per pile� 1.2m D-Wall� 44m deep� 29 panels� 2 loops /panel
� 6 loops per pile
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Pre-installation Quality Control & Testing
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Crossrail – WTH – Loop fixing
Diaphragm wall loops on outside of panel
Thermal loops prefixed on inside of reinforcement
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Lifting the Diaphragm Wall Cage
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Installing the Loops
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Installing the Loops
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Installing the second cage
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Fixing the loops to the cage
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Fixing & Testing
© Geothermal International
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Trimming and Protecting
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Pre-concrete Pressure Test
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Concreting the Diaphragm Wall
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Headering Works
© Geothermal International
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Crossrail Bond Street WTH - Capping beams with loops
Loops collecting up inside the capping beam
Loops at central collection point
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Headering Up
Edge Of slab
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Plant Room
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Main flow returns to piles in Plant room
Manifold
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Plant Room
Header Pipework
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Circulation Pumps
Header Pipework
Plate Frame Heat Exchanger
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Completed Plant Room
Controls
Slide 58
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Dry Cooler1,115kW Capacity
Retail Condenser CircuitTTarget = 20oC, Tmax = 40oC
Office LTHW CircuitTFlow = 50oC
CFS & Partners Responsibility
13 Number Heat Pumps in N + 1 Configuration
GI Responsibility
Heat Pump Capable of
Providing
Simultaneous Heating
& Cooling
Fan
Coil
Unit7°C
M
M
35
-50
°C
Cooling to
Crossrail
Station
Heating
to OSD
Δtmax 6°C
Δtm
ax
5°C
Limit of Geothermal Responsibility
© Geothermal International
www.geothermalint.co.uk
Telephone: +44 (0)24 7667 3131
One New Change Geothermal System Schematic
Schematic Only
SIZE Authored / Approved DWG NO REV
A3 CD / CD Schematic Only 1
SCALE NTS 22nd June 2007 SHEET 1 OF 1
Open Loop Well Pair
Typical Proposed Crossrail Arrangement
Energy Piles
& Wall
Control
CentreBuilding
Requirements
Monitor Record
Loop Temperatures
Ensure Crossrail
Asset Protection
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Opportunities For Crossrail Are Identical
For NLE & Thames Tideway
1km of Diaphragm Wall or Piles - 40m deep could provide..
• 500kW of Peak Heating (enough to heat over 50 Homes)
• 500kW of Peak Cooling
• Save 350 tonnes of CO2 per Annum
• Reduce Energy Bill by approx £90k per annum when
compared against conventional systems
© Geothermal International
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Opportunities for Tunnels
Option 1: Install loops
into Tunnel segments
1km of tunnel cooling could provide...
• 30-40kW of peak heating
• Save up to 2.5 tonnes of CO2 per annum
• Reduce Energy bills by approx. £240 per annum when compared against conventional systems
• RHI income of £3,604 per annum*
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Option 3: Install loops into
Tunnel Culvert
Option 2: Install loops behind
Tunnel segments
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Crossrail Station Opportunities
Utilising redundant TAM’s
Settlement reducing grout
shafts at Crossrail stations
One Zone will deliver 60kW
of heating and cooling
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Old Common Crossrail Depot
The contract between Transport For London and Bombardier covers the supply
& delivery of 65 new 200m long trains in 2017 & maintained for 32 years at
Old Oak Common.
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GI Renewable Energy Solution - Crossrail Old Oak Common Depot
• GSHP System
• 25no 150m deep boreholes
• 466no 15m deep energy piles under the building
• Will provide 936kWth heating and 566kWth cooling
• CHP System will provide top up 446kWth heating and 280kWe of electrical load
• 220m² Solar Thermal will add a further 140kWth of hot water load
• 1498m² Solar PV will provide a further 220kWe
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GI Renewable Energy Solution Highlights - Old Oak Common Depot
Based Upon Electrical, Heating and cooling profiles provided by Atkins
• 54% Heating and cooling will be provided from renewable technology
• 20% of electrical load generated on site from CHP / Solar PV
• 33% Renewable energy solution
Through our controls & long term management we will be
looking to outperform on current assessed performance..
Providing Demonstrated Savings Of.....
• Run cost savings £97,000 per annum when compared against
conventional equipment
• Renewable Heat Incentive £193,628/ annum
• 530Tonnes of CO2 per annum
• Potential payback on investment < 10 YearsWednesday, 03 December
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Benefits of using EnergyPiles ® / Energy Walls®
� Piles have dual functionality – structural and as energy source
� One of the cheapest sources of ground energy
� Relatively low extra over cost to use the piles (depends on technique)
Slide 66
on technique)
� Minimal impact on piling program
� Provides a Stable & Sustainable renewable energy
• Advantage for BREEAM / LEED buildings
• Reduces CO2 emissions to the atmosphere.
• UK Energy foundations saving circa 7,000T /annum
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Next Steps
Why wouldn’t you…?
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They have & do.
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GI Energy UK Headquarters
Contact - Tony Amis
Shillingwood House
Westwood Way
Westwood Business Park
contact
Westwood Business Park
Coventry
West midlands
CV4 8JZ
Mobile: +44 (0)7595 278 428Phone: +44 (0)2476 850 403
www.gienergy.net
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thank you
www.gienergy.net
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All contents of this presentation are copyright Geothermal International Limited. Reproduction is forbidden without specific permission of Geothermal International Limited.