case studies from hungary laszlo toth msc. geologist, project manager the geothermal heat pumps...
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Case Studies from Hungary
Laszlo TothMsc. 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
AGENDAAGENDA
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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 GSHPOFFICE BUILDING WITH GSHP
Raiffeisen Bank, Back Office in Budapest
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Geology Temperature log
OFFICE BUILDING WITH GSHPOFFICE 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 GSHPOFFICE BUILDING WITH GSHP
Raiffeisen Bank, Back Office in Budapest
Thermal Response Test: λ = 2,61 W/mK
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Drilling at RaiffeisenDrilling at RaiffeisenBank (total: 8,1 km Bank (total: 8,1 km
drilling)drilling)
OFFICE BUILDING WITH GSHPOFFICE BUILDING WITH GSHP
Raiffeisen Bank, Back Office in Budapest
Finished BHEsFinished BHEs
On top of the BHE field today On top of the BHE field today a parking lot is locateda parking lot is located
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Heating control roomHeating control room
OFFICE BUILDING WITH GSHPOFFICE BUILDING WITH GSHPRaiffeisen Bank, Back Office in Budapest
3 large heat 3 large heat pumps for pumps for heating – heating – cooling, 1 cooling, 1 heat pump for heat pump for DHWDHW
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OFFICE BUILDING WITH GSHPOFFICE BUILDING WITH GSHPRaiffeisen Bank, Back Office in Budapest
Savings: 20.500 €/year
Payback: 8 year
CO2 reduction:
283 t/year
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STATE INSTITUTION WITH GSHPSTATE INSTITUTION WITH GSHP
New Governmental District in Budapest
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STATE INSTITUTION WITH GSHPSTATE INSTITUTION WITH GSHP
New Governmental District in Budapest
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Prospective drilling, 128 m deep
STATE INSTITUTION WITH GSHPSTATE INSTITUTION WITH GSHP
New Governmental District in Budapest
Drilling for water and observation wells
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STATE INSTITUTION WITH GSHPSTATE INSTITUTION WITH GSHP
New Governmental District in Budapest
Geology Temperature log
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STATE INSTITUTION WITH GSHPSTATE 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 m3/day (groundwater)
↓
New Governmental District in Budapest
STATE INSTITUTION WITH GSHPSTATE INSTITUTION WITH GSHP
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Planned tasks:
STATE INSTITUTION WITH GSHPSTATE INSTITUTION WITH GSHPNew 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 THANK YOU FOR YOUR ATTENTION!ATTENTION!
1141 Budapest, Zsigárd u.21.Tel:+36(1)221-1458; Fax:+36(1)422-0004