20200130 dapwell a geothermal campus...theme leader geothermal energy. 2 heat and the energy...
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A hot topic for deep research
A geothermal campus: heating up the energy transition
Phil VardonGeoscience and EngineeringTheme leader Geothermal Energy
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Heat and the energy transition
Heat50%
Transport25%
Electricity25%
ENERGY CONSUMPTION IN NETHERLANDS
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Heat and the energy transition
Heat50%
Transport25%
Electricity25%
ENERGY CONSUMPTION IN NETHERLANDS
Low temp heat35%
High temp heat15%
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Heat and the energy transition
Heat50%
Transport25%
Electricity25%
ENERGY CONSUMPTION IN NETHERLANDS
Low temp heat35%
High temp heat15%
Urban environment (70%)24%
Industry (20%)7%
Horiculture (10%)4%
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Heat and the energy transition
Heat50%
Transport25%
Electricity25%
ENERGY CONSUMPTION IN NETHERLANDS
renewable heat (6%)3%
renewable transport (10%)
3%
renewable electricity (15%)
4%
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Heat
The trouble with heat
Quality is important: temperature
Conversion: hard to change temperature – costs energy
Transport: difficult to transport large distances without losses
Annual demand: large seasonal differences
The joy of heat
Availability: is everywhere
Low quality heat is useful
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Thermo-X Platform ‘The right heat, in the right place, at the right time and temperature’
www.tudelft.nl/thermo-x
www.tudelft.nl/tu-delft-urban-energy
Urban Energy Institute
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Geothermal Theme www.tudelft.nl/geothermal
Dr Maren BrehmeGeothermal / geochemistry
Dr Martin BloemendalATES / system
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A geothermal campus
Energy piles HT-ATES feasibility
DAPwellATES efficiency
Bloemendal
Heat grid
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DAPwell: Living laboratory
Science: Dept. GSE
Operations: CRE
Knowledge
Heat
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DAPwell: Living laboratory
Science: Dept. GSE
• ~€6m of research infrastructure planned.
• Operational funding (PhD students / researchers) to be applied for.
• Commercial business plan.• Phased implementation: supply
heat to campus, extend heat grid, supply heat outside campus.
• Company in process of being formed, with university and other partners.
Operations: CRE
Stephan Timmers, Total Shot Productions
DAPwell
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Research: DAPwell
reducing uncertainties | making sustainable energy large scale
Research topics
Prediction: models, control
Behaviour: thermo-hydraulic-chemical
Geology: cores >500m
Monitoring: geophysics, fibre optics, flow, best monitored well
Impact of activities at surface
Materials: new casing material
Integrated: to campus, urban
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Target reservoir
Coring GT-01 Producer GT-02 InjectorDepth (m)
0
400
700
1350
1800+
2300+
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Research: DAPwell
New project – includes research on DAPwell
Innovatieplan collectieve warmtesystemen in de gebouwde omgeving16
System integration
Theme 1
Sources Storage Transmission and distribution Users/prosumers
Acceptable implementation
Theme 6
Geothermie
Thema 4
Aquathermia
Theme 3
Cost-effectiveInstallation methods
Theme 2
Geothermal
Theme 4
Subsurface heat storage
Theme 5
Activities TUDelft
• 3 PhD positions
• Advanced Control of CO2-friendly District Heating Systems
• Design Optimisation of HT-ATES (+KWR)
• Advanced performance and impact monitoring of geothermal wells
Innovation plan17
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HT-ATES: Energy balance
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HT-ATES: Energy balanceMax
capacity (MW)
Total heat (TJ/y)
Demand TU* 27 200
Geothermal 7.4 135 (direct)
235 (max)
* 10% Loss in distribution network included
** 80% efficiency
Injection Extraction
Total heat (TJ/y)** 98.2 63.2
Max Capacity
(MW)
7.4 20
Max flow (m3/hr) 320 855
• TU can be fully supplied, leaving 35TJ/y• Phase 2 -> Return flow of campus used externally
0
5000
10000
15000
20000
25000
30000
1
33
8
67
5
10
12
13
49
16
86
20
23
23
60
26
97
30
34
33
71
37
08
40
45
43
82
47
19
50
56
53
93
57
30
60
67
64
04
67
41
70
78
74
15
77
52
80
89
84
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He
at
de
ma
nd
(k
W)
Time (h)
Geothermal Demand
Storage during summer
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WaalreWaalre
Maasluis
Oosterhout
Waalre Maasluis Oosterhout
Depth ++ Shallow + 120m + 245m
Capacity +
High
conductivity and
thick +
High
conductivity
and thick -
Thickness + 40m ++
Very thick,
with small clay
layers in
between - < 30m
Hydraulic
Conductivty + High +
Location
dependent
max 25 m/d +/- 5-10 m/d
Losses + More buoyancy -
Less
buoyancy,
because of
the layering +/- Low Kv
Risk of Clogging -
The sand
particles are
larger - Fine sand - Clayey sand
Bio/Mechanical Further research
Further
research
Further
reesearch
Other systems -
Most of the ATES
systems are
placed in this
layer. -/+
Some of ATES
wells + No
CommentsVery layered - non
homogenous Complex layers
HT-ATES: Subsurface conditions
21170828_V3_Innovation_Template.pptx
Shallow geothermal - Energy piles
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• How to measure thermal parameters?
• How do materials behave when the temperature changes?
• What impact on geotechnical performance?
Engineering questions?
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Vardon, P.J., Baltoukas, D. & Peuchen, J. 2018. Interpreting and validating the Thermal Cone Penetration Test (T-CPT). Géotechnique.
Measuring thermal conductivity
Thermal conductivity is increasingly needed (at depth)
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Golchin, A., Vardon, P.J. & Hicks, M.A. 2019. A thermodynamically based thermo-mechanical model for fine-grained soils. Proceedings of the ECSMGE-2019.
Material behaviour – with changes of temperature
New experiments – thermally controlled
Past models: phenomenologicalCurrent work: thermodynamics based model
Yield surface –including thermal collapse
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Geotechnical behaviour - Field tests
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Green village energy pile
MeasureHead displacementAxial strainTemperature (pile & soil)Load at pile toeCoP of system
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Expansion/contraction of soil
Expansion/contraction of pile
Additional bending on sheet pile
Thermal consolidation
Quaywall
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A hot topic for deep research
DAPwell: a geothermal campus?
For a geothermal country?
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Phil Vardon
Associate Professor
Geoscience and Engineering TU Delft
T +31 (0)15 27 81456 | E [email protected] | W http://www.citg.tudelft.nl/pj-vardon/
Some acknowledgements:Martin BloemendalDavid BruhnMaren BrehmeAli GolchinIvo PantevKizjè Marif