Installing renewable energy technologies into major infrastructure projects can provide opportunities for providing reduced CO2 savings and life cycle run costs adding a significant green element to a project..
7. Primary circuit options for GSHP systems
Systems can be combined to give optimal solution
Open Loop System
Closed Loop Systems
8. Ground Sourced Heat Pump (GSHP) Principle
TrinityHaus colloquium
Geothermal heat
flow
(0.06 W/m2)
Solar /atmospheric energy
(10’s -100’s W/m2)
Ground Temperature 10o -12o
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)
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
9. TrinityHaus colloquium
Ground sourced heat pump system
HEAT
PUMP
Compressor
Expansion valve
Pump
Pump
SOURCE CIRCUIT
(Geothermal piles)
SECONDARY CIRCUIT
(Building)
Cool
Warm
Hot
Warm
Cool
Warm
Hot
6o
30o
50o
10o
Heat
Exchange
r
Heat
Exchange
r
15. Slide 15
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)
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
17. 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
19. 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
• Pushed with 1 x 40mm bar
• Heating - 188kW
• Cooling - 117kW
Plunging used 40mm bar + 4 pipes (2 loops)
Trimming Cage and header pipes
32. Bulgari Hotel - First Energy Diaphragm Wall Project in UK
• System:
– Diaphragm Wall & Energy
Piles®
• Size:
– 150kW Heating
– 150kW Cooling
• Collector type:
– 50 Energy Piles
– 150m Energy D. Wall
• On Site:
– Commissioned 2012
34. Crossrail Stations London
• System:
– Diaphragm Wall & Energy
Piles®
• Size:
– 150kW-300kW Heating
– 150kW-300kW Cooling
• Collector type:
– Energy Piles
– Energy D. Wall
• On Site:
– Farringdon Street
– Tottenham Court Road
– Bond street
– Fisher Street
– Paddington
35. Anticipated CO2 Savings at Crossrail
Contract
Heating
peak power
Cooling
peak power
CO2
Savings
(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 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
66. Slide 66
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)
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
68. GI Energy UK Headquarters
Contact - Tony Amis
tony.amis@gienergy.co.uk
Shillingwood House
Westwood Way
Westwood Business Park
Coventry
West midlands
CV4 8JZ
Mobile: +44 (0)7595 278 428
Phone: +44 (0)2476 850 403
www.gienergy.net
contact
70. All contents of this presentation are copyright Geothermal International Limited. Reproduction is forbidden without specific permission of Geothermal International Limited.