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Case Studies from Hungary

THE GEOTHERMAL HEAT PUMPS MARKET IN CENTRAL & EASTERN EUROPE BRATISLAVA 12.11.2007. Case Studies from Hungary. Laszlo Toth Msc. Geologist, Project Manager. AGENDA. 1. History - HGD Ltd. 2. Raiffeisen Bank, Back Office 3. New Governmental District.

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Case Studies from Hungary

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  1. THE GEOTHERMAL HEAT PUMPS MARKET IN CENTRAL & EASTERN EUROPE BRATISLAVA 12.11.2007. Case Studies from Hungary Laszlo Toth Msc. Geologist, Project Manager

  2. AGENDA • 1. History - HGD Ltd. • 2. Raiffeisen Bank, Back Office • 3. New Governmental District

  3. Introduce the HGD Ltd. 1996 – foundation 2003 – first GSHP systems (family houses, car saloons) 2005 – first large GSHP system Large GSHP systems Oriental Herbs (325 kW, 60 BHE), 2005 Páty, Warehouse (610 kW, 120 BHE), 2006 Raiffeisen Bank (818 kW, 81 BHE), 2006 Pannon (960 kW, 180 BHE), 2007 – under construction

  4. OFFICE BUILDING WITH GSHP • Raiffeisen Bank, Back Office in Budapest

  5. OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest Geology Temperature log

  6. OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest A TRT was done to determine the thermal properties of the ground Thermal Response Test: λ = 2,61 W/mK

  7. OFFICE BUILDING WITH GSHP Drilling at RaiffeisenBank (total: 8,1 km drilling) • Raiffeisen Bank, Back Office in Budapest Finished BHEs On top of the BHE field today a parking lot is located

  8. OFFICE BUILDING WITH GSHP Heating control room • Raiffeisen Bank, Back Office in Budapest 3 large heat pumps for heating – cooling, 1 heat pump for DHW

  9. OFFICE BUILDING WITH GSHP • Raiffeisen Bank, Back Office in Budapest • Savings: 20.500 €/year • Payback: 8 year • CO2 reduction: 283 t/year

  10. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest

  11. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest

  12. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest Prospective drilling, 128 m deep Drilling for water and observation wells

  13. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest Geology Temperature log

  14. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest • 72 hours TRT • Calculation for number of BHE - Hydraulic tests (2 water wells,2 observation wells) - pumping test, recovery test • Hydraulic model(Processing Modflow)

  15. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest Closed loop and water source heat pump system:- heating demand – completely covered- cooling demand – partly covered (50%) ↓remaining 50%? - air-source heat pump? • Thermal Response Test: λ=1,98 W/mK → appr. 500 BHE (125 m) • → total BHE length: 62.500 m!!! • Hydraulic test: k=80 m/day → 2000 m3/day (groundwater) • ↓ RESULTS:

  16. STATE INSTITUTION WITH GSHP • New Governmental District in Budapest • Planned tasks: -More detailed heat transport model -More detailed hydraulic model -1-4 weeks long hydraulic test/pumping test - Examine the influence of the Danube

  17. THANK YOU FOR YOUR ATTENTION! 1141 Budapest, Zsigárd u.21.Tel:+36(1)221-1458; Fax:+36(1)422-0004www.hgd.hu info@hgd.hu

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