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Management of Aquifer Recharge and Energy Storage (MARES)
…..Aquifer Recharge and Storage
….Aquifer Thermal Energy Storage
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Management of Aquifer Recharge and Storage (MARS): 15% of drinking water in Holland
Bron drinkwaterproductie Leiduin
010
203040
5060
7080
1850
1862
1874
1886
1898
1910
1922
1934
1946
1958
1970
1982
1994
mln
m3/
jaar
Geinfiltreerd rivierwater (sinds 1957)Diep duinwater (sinds 1903)Ondiep duinwater(sinds 1853)
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Four products MARES project
• Quick scan technical feasibility of MARES in Romania
• Inventory of institutional and legal issues
• Preliminary designs
• Training of Romanian experts
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Quick Facts ATES
• 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
534
214
271
353
438
485
537
679
829
0
100
200
300
400
500
600
700
800
900
1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008
Aantal projecten t/m 2005 (CBS, 2006 en 2007 is schatting)
End of 2008: >
1.000
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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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InformationATES wells and groundwater
abstraction wells (for drainage of civil construction site)
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InformationNormal situation
(without building pit drainage)
Planned situation
(with building pit drainage)
Cold groundwater lost by abstraction for building pit drainage
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Modelled well temperatures
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
Jan 09
Jan 10
Jan 11
Jan 12
Jan 13
Jan 14
Jan 15
Jan 16W
ell t
empe
ratu
re (°
C)
Cold - before pit drainage
Cold - without pit drainage
Cold - with pit drainage
Warm - before pit drainage
Warm - without pit drainage
Warm - with pit drainage
start pit drainage
end pit drainage
Temperature difference discharged groundwater due to building pit drainage
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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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MARS in Romania
• The underground might be feasible for MARS• Climate change – increasing droughts favors MARS• Strategic interests of ROC?• Energy and economic savings• 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
• The underground seems 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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MARES planning
Table 1. Tentative planning Month after start of project Phase 1-2 3-4 5-6 7-8 9-10 11-14 1. Inception and Quick scan start
2. Elaboration phase: finalization of quick scan and data collection and interpretation
3. Practical tool development – field reconnaissance visits
4a. Preparation of training 4b. Study -discussion visit Holland 4c. Training seminar/design sessions Romania
5a. Elaboration designs in financing formats
5b. Final national conference
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For Quick Scan – Elaboration phase
Actions:
• Form team INHGA – AR – MoEF - BDG
• Quick scan inventory of what happens already (MARS and ATES) based on literature review, websearch etc.
• Connect with Gabardine project for MARS?
• Production of two national feasibility maps (MARS and ATES)
• Short description of top 10 regions/locations for MARS and ATES
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Information
• ATES and MARS (MARES) consortium in Romania: BDG,
• contact Mrs Florentina Nanu or Mrs Ioana Groza
• E-mail: florentina.nanu@bdgind.ro ; ioana.groza@bdgind.ro
• Telephone: +40723152330
Hydrological effects
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