04 heat storage - aachen2050.isl.rwth-aachen.deaachen2050.isl.rwth-aachen.de/w/images/1/1c/04_ScienceCity_Ritter.pdf/ ITA Institute of Technology in Architecture / Faculty of Architecture

/ ITAInstitute of Technology in Architecture / Faculty of Architecture / ETH ZurichChair for Building Specimen [BS] / Prof. LeibundgutPresentation heat storage / 22.11.10 / von 11

geothermal heat storage system at the Science-City campus

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· CO2 emissions directly generated by:

· providing heating

· operating BHKWs

· operating own car fleet

· CO2 emissions indirectly generated by:

· buying district heat

· buying electricity

· the traveling of the stuff (air traffic)

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· The distribution network of the Science-City campus will balance the need and the surplus of heat

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EER = C · ( )

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· The campus requires annually approximately 30 GWh for heating and 13 GWh for cooling

· Clusters of geothermal borehole heat exchangers have been installed on the campus

· 100 boreholes underneath the new HPL

· 120 boreholes next to the HCI

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· 8 clusters of total 800-1000 boreholes with different depths (~200m) will be installed

· The boreholes are set 5m apart

· The probes have a 40mm diameter and the brine fluid is water

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· Three rings carry different temperatures

· one with „high“ temperature of 20°C- max 40°C for hot water

· one with medium temperatureof 12°C-20°C for heating

· one with low temperatureof 5°C-12°C for cooling

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Documents

04 heat storage - aachen2050.isl.rwth-aachen.deaachen2050.isl.rwth-aachen.de/w/images/1/1c/04_ScienceCity_Ritter.pdf/ ITA Institute of Technology in Architecture / Faculty of Architecture