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green | efficient | anywhere
Efficient Geothermal Climate-ManagementHeating and Cooling with geoKOAX Volume Probes
- Also in areas with limited drilling-depths -
SWISS TERM d.o.o.
geoKOAX for Cooling and Heating
The free of charge renewable and innovative energy of the future.
Utilization of the natural and constant earth heat (ca. 10-12° C) for an all year round heating and cooling. 2
geoKOAX: Innovations and Benefits
Traditional System
geoKOAX
dbh = 120 to 150 mm dbh ≈ 200 mm
SupplyFlow
Return Flow
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geoKOAX: Innovations and Benefits
0,09 – 0,12 W/mK 0,05 – 0,055 W/mK
dbh = 120 to 150 mmdbh ≈ 200 mm
30mmAnnulus
Traditional System geoKOAX
> Collecting Surface < Borehole-Resistance
Borehole-Resistance
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geoKOAX Innovations and Benefits
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geoKOAX Turbulence Technology
Increase of Heat Transfer Coefficient (HTC)
Testrun at Univesity RWTH Aachen: HTC with 3m probe with 20 % increase
HTC with 10 m probes: 100 % increasepossible
Permanent shift from laminar toturbulent flows
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geoKOAX: Technical and Environmental Advantages
Fast, uniform and more efficient heating or cooling due to:1. Large collecting surface2. Minimization of the borehole-resistance3. Permanent shift from laminar - to turbulent flows
1. Geothermal solutions are also possible in areas with limited drilling permissions (f.x. limitation of drilling depths in Waterprotection areas)
2. Limited drilling risk (no danger to groundwater, interferringlayers of gypsum etc.)
3. Drilling is also possible when land plots are small.
1. Technical Advantages:
2. Environmental Advantages:
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geoKOAX Project-Examples
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geoKOAX Example – Hospital Düren
General ConditionsHeated area in sqm 7.200 Heat Output in kW: 243 Cooling Performance in kW: 155
Parameter geoKOAX Traditional System Total Length of Probes in m 2.418 4.134 # Boreholes x Length of Probe 78 x 31 78 x 53Volume of Bryne in Liter 32.643 8.200 Approximate Cost in € 200.000 257.000
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geoKOAX Example – Apartment-building Troisdorf
Ground-plan with Drilling-field
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geoKOAX Example – Apartment-building Troisdorf
General ConditionsLimitation Drilling Depth in m 24 Heated area in sqm 4.200 Heat Output in kW: 140 Cooling Performance in kW: ./.
Parameter geoKOAX Traditional System Total Length of Probes in m 1.380 2.300 # Boreholes x Length of Probe 60 x 23 100 x 23Volume of Bryne in Liter 19.000 4.800 Approximate Cost in € 115.000 143.000
monovalent bivalent
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geoKOAX Example – Large Scale Project, The Netherlands
General ConditionsLimitation in Drilling Depth ./.Heated area in sqm 15.200 Heat Output in kW: 550 Cooling Performance in kW: ./.
Parameter geoKOAX Traditional System Total Length of Probes in m 7.120 11.900 # Boreholes x Length of Probe 89 x 80 149 x 80Volume of Bryne in Liter 100.000 23.000 Approximate Cost in € 433.000 500.000
monovalent bivalent
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geoKOAX Example – Investment, residential area Hattingen
Gesamt Paket GC-Gruppe - Geokoax GmbH
General ConditionsDrilling Depth in m 30 Heated Area in sqm 3.045 21 Units x 145 qmHeat Output in kW: 126 21 Units x 6 kW Cooling Performance in kW: ./.
Parameter geoKOAX Traditional System Total Length of Probes in m 1.260 ./. # Boreholes x Length of Probe 42 x 30 ./. Volume of Bryne in Liter 17.000 ./. Approximate Cost in € 78.000 ./.
monovalent ./.
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geoKOAX Example – Industrial Building, Salching
General ConditionsLimitation in Drilling Depth, m 25 Size of Borefield in sqm 900 Heated Area in sqm 2.200 Heat Output in kW: 60 Cooling Performance in kW: ./.
Parameter geoKOAX Traditional System Total Length of Probes in m 575 958 # Boreholes x Length of Probe 23 x 25 23 x 42Volumen Bryne in Liter 7.500 1.900 Approximate cost in € 47.917 59.563
monovalent bivalent
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geoKOAX Example – Water Protection Area Chiemsee (Island)
Milestone-Project on an island in a water protection area (deep drilling prohibited)The very first house on Fraueninsel (island) without fossil energy
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geoKOAX Example – Railway Switch Heaters Farchant Station (Zugspitze)
Trial -Project of German Railway Company DB AG: successfully passed.Since 2014: General Approval by DB AG.
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green | efficient | anywhere
Gojko Kovačević
CEO Swiss Term d.o.o.Surčinsca 5, Ledine, Novi Beograd
T. +381 – 11 266 9999M. + 381 – 65 333 5657E. [email protected]
geoKOAX GmbHAm Kirchenhölzl 1382166 GräfelfingDeutschlandwww.geokoax.de
SWISS TERM d.o.o.
