A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark)

Maria Alberdi Pagola, Rasmus Lund Jensen, Søren Erbs Poulsen

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

The Rosborg Gymnasium building in Vejle (Denmark) is partially founded on 200 foundation pile heat exchangers (energy piles). The thermo-active foundation has supplemented the heating and free cooling needs of the building since 2011 (4,000 m2 living area). Operational data from the ground source heat pump installation has been compiled since the beginning of 2015. The heating requirement of the building supplied by the ground source heat pump exceeds the free cooling covered by ground heat exchange. The asymmetric utilization of the soil should in principle, imply a decrease in the long-term ground temperatures. However, operational data show that the temperatures of the heat-carrier fluid do not fall below +4.2oC during the heating season (winter) and that the soil recovers to undisturbed conditions during the summer when heat demand is low. In addressing the consequences of an imbalanced ground heat extraction/injection activity , this paper provides a performance study of the energy pile-based ground source heat pump installation utilising operational data. The study demonstrates that the measured seasonal performance factors so far are lower than expected: 2.7 in heating mode and 4.2 in cooling mode. Nevertheless, there is room for improvement if novel energy management strategies are applied. This highlights the relevance of considering the daily heating/cooling requirements of the building during the design phase of the heating and cooling system. Moreover, this study demonstrates the feasibility of ground source heat pump systems based on energy foundations in heating-dominant buildings.
OriginalsprogEngelsk
TitelCLIMA 2016 : proceedings of the 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark
RedaktørerPer Heiselberg
Antal sider10
Vol/bind3
Udgivelses stedAalborg
ForlagDepartment of Civil Engineering, Aalborg University
Publikationsdato2016
Artikelnummer472
ISBN (Elektronisk)87-91606-28-4 (vol 3), 87-91606-36-5 (set)
StatusUdgivet - 2016
BegivenhedCLIMA 2016 - 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark - Aalborg, Danmark
Varighed: 22 maj 201625 maj 2016
Konferencens nummer: 12

Konference

KonferenceCLIMA 2016 - 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark
Nummer12
LandDanmark
ByAalborg
Periode22/05/201625/05/2016

Fingerprint

Pile foundations
Geothermal heat pumps
Heating
Cooling
Piles
Soils
Heat pump systems
Energy management
Cooling systems
Heat exchangers
Temperature
Fluids
Hot Temperature

Emneord

  • Shallow geothermal energy
  • GSHP
  • Energy foundation
  • Energy pile
  • Case study
  • Performance factors
  • Performance

Citer dette

Pagola, M. A., Jensen, R. L., & Poulsen, S. E. (2016). A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark). I P. Heiselberg (red.), CLIMA 2016: proceedings of the 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark (Bind 3). [472] Aalborg: Department of Civil Engineering, Aalborg University.
Pagola, Maria Alberdi ; Jensen, Rasmus Lund ; Poulsen, Søren Erbs. / A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark). CLIMA 2016: proceedings of the 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark. red. / Per Heiselberg. Bind 3 Aalborg : Department of Civil Engineering, Aalborg University, 2016.
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title = "A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark)",
abstract = "The Rosborg Gymnasium building in Vejle (Denmark) is partially founded on 200 foundation pile heat exchangers (energy piles). The thermo-active foundation has supplemented the heating and free cooling needs of the building since 2011 (4,000 m2 living area). Operational data from the ground source heat pump installation has been compiled since the beginning of 2015. The heating requirement of the building supplied by the ground source heat pump exceeds the free cooling covered by ground heat exchange. The asymmetric utilization of the soil should in principle, imply a decrease in the long-term ground temperatures. However, operational data show that the temperatures of the heat-carrier fluid do not fall below +4.2oC during the heating season (winter) and that the soil recovers to undisturbed conditions during the summer when heat demand is low. In addressing the consequences of an imbalanced ground heat extraction/injection activity , this paper provides a performance study of the energy pile-based ground source heat pump installation utilising operational data. The study demonstrates that the measured seasonal performance factors so far are lower than expected: 2.7 in heating mode and 4.2 in cooling mode. Nevertheless, there is room for improvement if novel energy management strategies are applied. This highlights the relevance of considering the daily heating/cooling requirements of the building during the design phase of the heating and cooling system. Moreover, this study demonstrates the feasibility of ground source heat pump systems based on energy foundations in heating-dominant buildings.",
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Pagola, MA, Jensen, RL & Poulsen, SE 2016, A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark). i P Heiselberg (red.), CLIMA 2016: proceedings of the 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark. bind 3, 472, Department of Civil Engineering, Aalborg University, Aalborg, Aalborg, Danmark, 22/05/2016.

A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark). / Pagola, Maria Alberdi; Jensen, Rasmus Lund; Poulsen, Søren Erbs.

CLIMA 2016: proceedings of the 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark. red. / Per Heiselberg. Bind 3 Aalborg : Department of Civil Engineering, Aalborg University, 2016. 472.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark)

AU - Pagola, Maria Alberdi

AU - Jensen, Rasmus Lund

AU - Poulsen, Søren Erbs

PY - 2016

Y1 - 2016

N2 - The Rosborg Gymnasium building in Vejle (Denmark) is partially founded on 200 foundation pile heat exchangers (energy piles). The thermo-active foundation has supplemented the heating and free cooling needs of the building since 2011 (4,000 m2 living area). Operational data from the ground source heat pump installation has been compiled since the beginning of 2015. The heating requirement of the building supplied by the ground source heat pump exceeds the free cooling covered by ground heat exchange. The asymmetric utilization of the soil should in principle, imply a decrease in the long-term ground temperatures. However, operational data show that the temperatures of the heat-carrier fluid do not fall below +4.2oC during the heating season (winter) and that the soil recovers to undisturbed conditions during the summer when heat demand is low. In addressing the consequences of an imbalanced ground heat extraction/injection activity , this paper provides a performance study of the energy pile-based ground source heat pump installation utilising operational data. The study demonstrates that the measured seasonal performance factors so far are lower than expected: 2.7 in heating mode and 4.2 in cooling mode. Nevertheless, there is room for improvement if novel energy management strategies are applied. This highlights the relevance of considering the daily heating/cooling requirements of the building during the design phase of the heating and cooling system. Moreover, this study demonstrates the feasibility of ground source heat pump systems based on energy foundations in heating-dominant buildings.

AB - The Rosborg Gymnasium building in Vejle (Denmark) is partially founded on 200 foundation pile heat exchangers (energy piles). The thermo-active foundation has supplemented the heating and free cooling needs of the building since 2011 (4,000 m2 living area). Operational data from the ground source heat pump installation has been compiled since the beginning of 2015. The heating requirement of the building supplied by the ground source heat pump exceeds the free cooling covered by ground heat exchange. The asymmetric utilization of the soil should in principle, imply a decrease in the long-term ground temperatures. However, operational data show that the temperatures of the heat-carrier fluid do not fall below +4.2oC during the heating season (winter) and that the soil recovers to undisturbed conditions during the summer when heat demand is low. In addressing the consequences of an imbalanced ground heat extraction/injection activity , this paper provides a performance study of the energy pile-based ground source heat pump installation utilising operational data. The study demonstrates that the measured seasonal performance factors so far are lower than expected: 2.7 in heating mode and 4.2 in cooling mode. Nevertheless, there is room for improvement if novel energy management strategies are applied. This highlights the relevance of considering the daily heating/cooling requirements of the building during the design phase of the heating and cooling system. Moreover, this study demonstrates the feasibility of ground source heat pump systems based on energy foundations in heating-dominant buildings.

KW - Shallow geothermal energy

KW - GSHP

KW - Energy foundation

KW - Energy pile

KW - Case study

KW - Performance factors

KW - Performance

KW - Shallow geothermal energy

KW - GSHP

KW - Energy foundation

KW - Energy pile

KW - Case study

KW - Performance factors

KW - Performance

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M3 - Article in proceeding

VL - 3

BT - CLIMA 2016

A2 - Heiselberg, Per

PB - Department of Civil Engineering, Aalborg University

CY - Aalborg

ER -

Pagola MA, Jensen RL, Poulsen SE. A performance case study of energy pile foundation at Rosborg Gymnasium (Denmark). I Heiselberg P, red., CLIMA 2016: proceedings of the 12th REHVA World Congress, 22-25 May 2016, Aalborg, Denmark. Bind 3. Aalborg: Department of Civil Engineering, Aalborg University. 2016. 472