Saving Energy and
reduction of CO2….
…..Aquifer Thermal Energy Storage
(ATES) makes it possible
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ATES: How it works :
Summer
2
Winter
Quick Facts
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Heating and cooling of buildings, offices, processes
Saves up to 90% on primary energy and CO2
Cooling without air conditioning
Using winter “cold” for cooling in summer
Using summer heat for heating in winter
Energy neutral system (after T)
Return on investment between 1 and 7 years
and also….
• Using groundwater with average temperature of 5-15 oC
• Wells in aquifer, between 20 till max 300 m -sl
• No harmful effects for the environment or aquifer system
• No smell, no noise, no visual effects
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Quick Facts (2) Development in Holland
1992
2008
Aantal projecten t/m 2005 (CBS, 2006 en 2007 is schatting)
900
800
700
600
500
829
End of 2008: >
1.000
679
537
485
438
400
353
271
300
214
200
100
34
5
0
1988
4
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
Usage
ATES can be used for:
• Office buildings;
• Hospitals and schools;
• Urban areas (as alternative
of district heating);
• Private houses (different but
similar technique);
• Appartment buildings
• Greenhouses;
• etc
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Example: office building (The Hague, NL)
• Office space of 35.000 m2
• Thermal energy demand
• Cold 1.800 kW
• Heat 2.150 kW
• Conventional system was:
district heating and
cooling equipment (airco)
• Old system is changed by ATES with 4 wells
Result
• Pay back time of additional investments for ATES: 4 years.
• Reduction of costs for energy, € 800.000,-- over a period of 10 yrs
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Example: office building (Zwolle, NL)
• Office space of 28.500 m2
• Thermal energy demand
• Cold 2.000 kW
• Heat 1.750 kW
• Conventional system was: gas fired
boilers and cooling equipment
• Old system changed by
ATES with 2 wells
Result:
• Pay back time additional investment less then 2 years.
• Reduction of energy costs, € 1.000.000 over a period of 10 yrs
• The office produces a heat surplus.
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ATES wells and groundwater
Information
abstraction wells (for drainage of
civil construction site)
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Normal situation
Planned situation
Information
(without building pit drainage) (with building pit drainage)
Cold groundwater lost by
abstraction for building pit
drainage
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Modelled well temperatures
17.0
16.0
15.0
Temperature difference discharged
groundwater due to building pit
drainage
Well temperature (°C)
14.0
13.0
Cold - before pit drainage
Cold - without pit drainage
Cold - with pit drainage
12.0
Warm - before pit drainage
11.0
Warm - without pit drainage
10.0
Warm - with pit drainage
start pit drainage
9.0
end pit drainage
8.0
7.0
Jan 16
Jan 15
Jan 14
Jan 13
Jan 12
Jan 11
Jan 10
Jan 09
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Example: Hospital (Turkey)
Electrical energy saving of
• 3.250 MWh/year for cooling
• 1.000 m3 of oil for heating.
Total investment cost was calculated to
• roughly 1 million USD
Value of energy savings as
• approximately 500.000 USD
• pay-back time of 2 years
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ATES in Romania
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The underground is feasible for ATES
The climate is very suitable
Decrease of oil and gas dependence
CO2 and primary energy savings up to 90 %
Strong reduction on exploitation costs
Legal aspects under present laws might need adaptions
How to Realize?
• Feasibility study (technical, economical, juridical)
• Test drilling
• Design and specification
• Arrangement of permits
• Selecting construction team
• Construction and realization
• Commissioning
• Monitoring
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ATES in Romania: feasibility
Feasibility of the subsoil
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Information
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ATES consortium in Romania: BDG,
contact Mrs Florentina Nanu or Mrs Ioana Groza
E-mail: [email protected] ; [email protected]
Telephone:
Hydrological effects
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