1UPVLC DEMO SITE Kick off meeting 16th January 2009

UPVLC DEMO SITE PRESENTATION

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J.M. CorberánC.Montagud

A.Kalesis

Instituto de Ingeniería EnergéticaUniversidad Politécnica de Valencia

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THE FIFTH FRAMEWORK PROGRAMME

GEOCOOLGeothermal Heat Pumpfor Cooling-and Heatingalong European Coastal Areas

Project No: NNE5 – 2001 – 00847

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THE FIFTH FRAMEWORK PROGRAMME

GEOCOOLGeothermal Heat Pumpfor Cooling-and Heatingalong European Coastal Areas

UPV UNIVERSIDAD POLITÉCNICA DE VALENCIA, SpainGROHOL GROENHOLLAND, HollandCIATESA Compañía Industrial de Aplicaciones Térmicas S.A., SpainAUTH Aristotle University of Thessaloniki, GreeceENEA Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ItalyAEDIE Asociación para la Investigación y la Diagnosis de la Energía, Spain

Duration: 3 years Feb. 2003 - 2006

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Ground Source HE

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Ground Source HE

backfilling:sand (course and fine)or sand/bentonitealternative use of spacers

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Hydr. switch

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GeoCool data acquisition system

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44 sensors in the loop (PT100, coriolis mass flowmeters and wattmeters) On site automatic meteorological station w. 22 parameters 1 min sampling during 1 year

44 sensors in the loop (PT100, coriolis mass flowmeters and wattmeters) On site automatic meteorological station w. 22 parameters1 min sampling during 1 year

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Dynamic behaviour

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Cooling Mode

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System performance in heating mode

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3.463.46

2.002.00

73 %

Experimental results

HSPF

COP – WWSPF – WWCOP – AWSPF - AW

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Heating mode – Return WT

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Energy distribution in heating

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COP and SPF in cooling mode

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4.364.36

2.722.72

60 %

COP – WWSPF – WWCOP – AWSPF - AW

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Energy distribution in cooling

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OPTIMUM FLOW RATES

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OPTIMUM FLOW RATES

20% 25%

40%

Both pumps at same speed

Pump freq. (Hz) Pump freq. (Hz)

Pump freq. (Hz)

COOLING MODE

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Results

In heating mode, 41% energy savings

In cooling mode 38% energy savings

Capacity adaptation strategies are needed to improve load factor and efficiency of (both) systems.

High impact in electricity consumption of auxiliary elementsImproved control strategies should be implemented.

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GROUND(test IN-SITU)Ground thermal conductivity 1.800 W/m·KVolumetric heat capacity 2.4MJ/m3·KGround surface temperature 18.5 °CBOREHOLEConfiguration: 6 : 2 x 3, rectangleBorehole depth 50 mBorehole spacing 3 mBorehole installation SINGLE-UBorehole diameter 0.14 mU-pipe diameter 0.032 mU-pipe thermal conductivity 0.430

W/m·K(Polyethylene)HEAT CARRIER FLUID: WaterHEAT PUMP: IZE70 + R290 (UPV-CIATESA)

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Ground Source HE main parameters