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Published byJerome Porter Modified over 9 years ago
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Case Studies from Hungary Laszlo Toth Msc. Geologist, Project Manager THE GEOTHERMAL HEAT PUMPS MARKET IN CENTRAL & EASTERN EUROPE BRATISLAVA 12.11.2007.
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- 1. History - HGD Ltd. - 2. Raiffeisen Bank, Back Office - 3. New Governmental District AGENDA
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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
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OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest
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Geology Temperature log OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest
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A TRT was done to determine the thermal properties of the ground OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest Thermal Response Test: λ = 2,61 W/mK
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Drilling at Raiffeisen Bank (total: 8,1 km drilling) OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest Finished BHEs On top of the BHE field today a parking lot is located
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Heating control room OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest 3 large heat pumps for heating – cooling, 1 heat pump for DHW 3 large heat pumps for heating – cooling, 1 heat pump for DHW
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OFFICE BUILDING WITH GSHP Raiffeisen Bank, Back Office in Budapest Savings: 20.500 €/year Payback: 8 year CO 2 reduction: 283 t/year
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STATE INSTITUTION WITH GSHP New Governmental District in Budapest
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STATE INSTITUTION WITH GSHP New Governmental District in Budapest
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Prospective drilling, 128 m deep STATE INSTITUTION WITH GSHP New Governmental District in Budapest Drilling for water and observation wells
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STATE INSTITUTION WITH GSHP New Governmental District in Budapest Geology Temperature log
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STATE INSTITUTION WITH GSHP New Governmental District in Budapest -72 hours TRT - Hydraulic tests (2 water wells,2 observation wells) - pumping test, recovery test - Hydraulic model (Processing Modflow) - Calculation for number of BHE
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Closed loop and water source heat pump system: - heating demand – completely covered - cooling demand – partly covered (50%) ↓ remaining 50%? - air-source heat pump? RESULTS: -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 m 3 /day (groundwater) ↓ New Governmental District in Budapest STATE INSTITUTION WITH GSHP
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Planned tasks: STATE INSTITUTION WITH GSHP New Governmental District in Budapest -More detailed heat transport model -More detailed hydraulic model -1-4 weeks long hydraulic test/pumping test - Examine the influence of the Danube
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THANK YOU FOR YOUR ATTENTION! 1141 Budapest, Zsigárd u.21. Tel:+36(1)221-1458; Fax:+36(1)422-0004 www.hgd.hu www.hgd.hu info@hgd.hu
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