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Renewable Energy from Water and Subsurface Hans Gehrels.

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Presentation on theme: "Renewable Energy from Water and Subsurface Hans Gehrels."— Presentation transcript:

1 Renewable Energy from Water and Subsurface Hans Gehrels

2 26 maart 2009Nationale Bodemconferentie, Rotterdam2 Broad picture … “We will restore science to its rightful place, and wield technology's wonders We will harness the sun and the winds and the soil to fuel our cars and run our factories.” Barack Obama in his inaugural speech on Jan. 20, 2009

3 26 maart 2009Nationale Bodemconferentie, Rotterdam3 Transition to renewable energy The combination of energy consumption and climate change requires a transition to renewable energy Goals of the Dutch Government: triple 20 Reduce dependance on fossile fuels by reducing energy use by 20% Use 20% renewable energy, and Decrease CO2-production with 20% in 2020 (against 1990) At unaltered policy: half way

4 26 maart 2009Nationale Bodemconferentie, Rotterdam4 Research agenda REWS – three main themes Trias energetica Bron: website ECN, maart Development of techniques for REWS 3. Combining water, subsurface and energy in spatial planning 1. Energy saving

5 26 maart 2009Nationale Bodemconferentie, Rotterdam5 1. Energy saving Energy neutral surface water management Optimization of hydraulics (waste water transport)

6 26 maart 2009Nationale Bodemconferentie, Rotterdam6 2. Development of techniques for REWS ATES Effects on subsurface, new applications, monitoring, efficiency Energy from surface water Design and effects, ecological impact on lakes and urban water Water movement (a.o. testing rotors, waves, tide) Using facilities for testing of installations Energy from fresh-salt gradients: Blue energy Labtesting of osmotic membrane modules Biomass Effects of algae on surface waters

7 26 maart 2009Nationale Bodemconferentie, Rotterdam7 3. Combining water, subsurface and energy in spatial planning Local area approach to energie demand, -transport en –availability ATES, surface water, geothermal, waste water, process water, cooling water, remediation, … Heat management in the large rivers Nation wide, cooling of electricity plants, … Combine techniques A.o. ATES and bioremediation, ground water and surface water Development of knowledge and information system for ATES and Geothermal Web based application ThermoGIS-WKO

8 Aquifer Thermal Energy Storage

9 26 maart 2009Nationale Bodemconferentie, Rotterdam9 Geothermal systemClosed systemOpen system Pipes and hoses Up to 150 m bgs No regulation From 1 house Saved back in 10 – 20 years systems Wells Up to300 m bgs Licensing by law From 50 houses Saved back in 1 – 12 years 1000 systems Wells Up to 5000 m bgs Licensing by law From 1500 houses Saved back in 5 – 20 years 1 system Soil energy – different types

10 26 maart 2009Nationale Bodemconferentie, Rotterdam10 Open systems Ca. 30% of NL energy is used for heating and cooling of buildings, i.e.: IF ATES saves 50-70% fossil energy, THEN - with only 1 renewable energy technique 15-20% reduction of total energy use is feasable

11 26 maart 2009Nationale Bodemconferentie, Rotterdam11 Growth of open systems

12 26 maart 2009Nationale Bodemconferentie, Rotterdam12 Growth of open systems systems1000 systems200 systems

13 26 maart 2009Nationale Bodemconferentie, Rotterdam13 Simulation of piezometric head and temperature contour lines – May

14 26 maart 2009Nationale Bodemconferentie, Rotterdam14 Simulation of piezometric head and temperature contour lines – Oct

15 26 maart 2009Nationale Bodemconferentie, Rotterdam15 Simulation of piezometric head and temperature contour lines – Apr

16 26 maart 2009Nationale Bodemconferentie, Rotterdam16 Temperature time series at 3 cells

17 26 maart 2009Nationale Bodemconferentie, Rotterdam17 Upconing of fresh-salt boundary

18 26 maart 2009Nationale Bodemconferentie, Rotterdam18 Spatial planning Increasing use of the subsurface – for: energy, but also groundwater abstraction infrastructure In situ remediation … - requires 3D spatial planning

19 26 maart 2009Nationale Bodemconferentie, Rotterdam19 More with ATES Research programme on application of ATES Advies/ontwerp WKO (thermisch) Nieuwe concepten WKO Onderzoek WKO (therm/bio/geochem) WKO en saneren monitoringstools Fundamenteel onderzoek (WKO) WKO, saneren (mn biologie), ecologie Praktisch onderzoek WKO (bio/geochem), ecologie, biodiversiteit WKO en saneren

20 26 maart 2009Nationale Bodemconferentie, Rotterdam20 Main themes and Research questions Long term effects of ATES What are the effects of ATES on groundwater quantity and quality? Protect and develop New possibilities with ATES Can we combine ATES with in-situ remediation? How can we integrate ATES in the urban water cycle? How do we arrive at a spatial planning approach?

21 26 maart 2009Nationale Bodemconferentie, Rotterdam21 WP2: effects of (large scale) ATES Piezometric head: influence on aquifer; interaction shallow-deep; seepage Heterogeneity: understanding transport patterns; efficiency of heat storage Temperature: influence on aquifer in large scale application Natural chemistry: influence on natural composition Salinization: effect on fresh-salt patterns of large installations Pathogene bacteria: downward transport Natural deep bacteria: effect Geomechanics: effect on ground surface, settlement Effects after closing down: delay time High temperature storage: effects and possibilities Multiple systems: efficiency of storage

22 26 maart 2009Nationale Bodemconferentie, Rotterdam22 Interference

23 26 maart 2009Nationale Bodemconferentie, Rotterdam23 Risks of interference Estiation of the risk of interference in 2005 and in 2030 (IF Technology)

24 26 maart 2009Nationale Bodemconferentie, Rotterdam24 WP3: combining ATES with in situ remediation Remediative effect of continuous circulation Effect of pollution on ATES Effect of ATES on degradation Corrosion and clogging: design of ATES installation New concepts for the combination

25 26 maart 2009Nationale Bodemconferentie, Rotterdam25 WP4: ATES in water and energy cycle Analysis of opportunities and new posibilities Integrating spatial planning issues, water management objectives and energy goals Combine groundwater, surface water, process water, etc.

26 26 maart 2009Nationale Bodemconferentie, Rotterdam26 ATES … Cooling Heating 18 ◦C7 ◦C HE ATES Summer

27 26 maart 2009Nationale Bodemconferentie, Rotterdam27 Cooling Heating 18 ◦C 7 ◦C HE ATES Summer ATES combined with surface water

28 Questions?


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