EXERGY PLANNING FOR CAMPUS HEERLEN (NL)

EXERGY PLANNING FOR CAMPUS HEERLEN (NL)
Leo Gommans and Ferry Van Kann
SREX
[email protected], University of Technology,
Faculty of Architecture, Julianalaan 134,2628 BL Delft (NL)
[email protected], Zuyd University of Applied Sciences,
Faculty of the Built Environment, Nieuw Eyckholt 300, 6419DJ Heerlen
[email protected], University of Groningen, Department of
Planning, Faculty of Spatial Sciences, P.O. Box 800 9700 AV Groningen
What?
Why?
The development of an optimal energy system for the
Heerlen campus, based on the principles of exergy
planning. Exergy-planning is the realisation of spatial
conditions for improved use of unused (residual) energy
flows. This means:
• Improved use of the quality of energy
• Realisation of spatial energy cascades
• Use of residual energy flows (waste = food)
• Realisation of low-exergy energy demand (LowEx)
• Better use of high-exergy residual energy supply
• 30-40% of the energy demand comes from the built environment.
• Energy saving efforts are mostly done on the scale of the building
• Potentials of the regional scale have been undervalued till now
• Principles of exergy are not often used to reduce energy demand
Biogas CHP
Biodigester
Biogas pipe
Thermal net
Thermal storage in
local mine gallery
Wind turbines
Hogeschool Zuyd
Existing buildings
70/50 & 50/30oC
Arcus College new
building 30/20oC
Biomass waste from
the rural area and
the city for biogas
and fertliizer
Results
The result will be a plan for the campus in east Heerlen,
making use of the local potentials and the principles for
up- and downcycling energy:
• Use roof area for solar gain (electricity and heat).
• Windturbines along road for electricity production.
• Use waste biomass from agriculture, maintenance of
nature and residential garbage for producing bio gas.
• Transport biogas in piplines to urban areas to CHP.
• Convert biogas in CHP to electricity and heat for grid.
• Cascade heat demand for different temperatures.
• Create a LowExergy energy demand for the buildings.
• Create LowExergy thermal grids for new districts
• Use existing heat grids in heat cascades
• Use local former cole mines for heat and cold storage.
• Connect heat and cold grid to regional thermal network
• Regional (Parkstad Limburg) thermal network is connected to industrial areas for residual heat, sand quarry
lakes for cold, and Colemines for large scale storage.
• Clean residual from biogas production returns as
fertilizer to the agricultural area around Heerlen.
Method
• Inventory of local present (residual) energy sources
• Inventory of sinks (demand for heat, cold, electricity and fuel)
• Apply technigues for conversion, transport and storage of energy
• Develop a plan based on up- and downcycling (cascade) of energy
Biomass waste
from the urban
sewage system
‘t Loon, existing
district with heat
grid and CHP
90/70 & 70/50oC
Plans for offices
with cold and
heat grid 50/30
& 30/20oC
‘Existing offices
70/50 oC
Open University
Existing buildings
70/50 & 50/30oC
Existing dwellings
with CHP and
heatgrid 90/70oC
Regional thermal
net 70/25/15oC
References and acknowledgments
• Minewater , a geothermal source or a storage for sustainable energy in
a Low Exergy Thermal Network - Gommans, Minewater 2008 - Heerlen
• Synergy between exergy and regional planning - Gommans L. &
Dobbelsteen A. van den; in: Brebbia C.A., Popov V. (ed.), Energy
and Sustainability (103-112); WIT Press, Southampton, 2007
• An Exergy planning approach for the region Parkstad Limburg –
Gommans & Van Kann, 2009, Delft (NL)
• Energievisie Onderwijscampus Heerlen – Cauberg-Huygen
Raadgevend ingenieurs BV, Maastricht (NL) 2009
• Mogelijkheden voor het gebruik van geothermische energie voor
de Open Universiteit te Heerlen (NL) – VITO NV Mol (B) 2007
• J. Stefens, Open Universiteit Heerlen (NL)

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