Design optimization of the borehole system for a plus-Energy kindergarten in Oslo, Norway

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Design optimization of the borehole system for a plus-Energy kindergarten in Oslo, Norway. / Javed, Saqib; Ørnes, I. R.; Myrup, M.; Dokka, T. H.

I: Architectural Engineering and Design Management, Vol. 15, Nr. 3, 2019, s. 181-195.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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TY - JOUR

T1 - Design optimization of the borehole system for a plus-Energy kindergarten in Oslo, Norway

AU - Javed, Saqib

AU - Ørnes, I. R.

AU - Myrup, M.

AU - Dokka, T. H.

PY - 2019

Y1 - 2019

N2 - This paper presents the case study of a newly constructed 1600 m2 kindergarten building in Oslo, Norway. The building has been designed within the framework of the Norwegian Research Council Project LowEx, which aims at engineering solutions to achieve a seasonal coefficient of performance (SCOP) of 6–10 for heating, a seasonal energy efficiency ratio (SEER) of 80–100 for cooling, and an 80% reduction in the purchased electric energy for heating and cooling of the buildings. Several architectural and technical measures have been implemented in the case study building to meet these requirements. This paper first provides an account of the design measures implemented in the building to achieve the ambitious energy performance targets. It then focuses on the design of the ground source heating and cooling system for the building and presents the preliminary design of the borehole system to provide low-temperature heating and high-temperature cooling to the kindergarten. The possibility of improving the borehole system design by optimizing the solar heat gains through the building envelope to balance the ground thermal loads is explored next. Finally, the effect of uncertainties in the design input values of ground thermal conductivity, effective borehole thermal resistance, and undisturbed ground temperature on the final design of the borehole system is evaluated.

AB - This paper presents the case study of a newly constructed 1600 m2 kindergarten building in Oslo, Norway. The building has been designed within the framework of the Norwegian Research Council Project LowEx, which aims at engineering solutions to achieve a seasonal coefficient of performance (SCOP) of 6–10 for heating, a seasonal energy efficiency ratio (SEER) of 80–100 for cooling, and an 80% reduction in the purchased electric energy for heating and cooling of the buildings. Several architectural and technical measures have been implemented in the case study building to meet these requirements. This paper first provides an account of the design measures implemented in the building to achieve the ambitious energy performance targets. It then focuses on the design of the ground source heating and cooling system for the building and presents the preliminary design of the borehole system to provide low-temperature heating and high-temperature cooling to the kindergarten. The possibility of improving the borehole system design by optimizing the solar heat gains through the building envelope to balance the ground thermal loads is explored next. Finally, the effect of uncertainties in the design input values of ground thermal conductivity, effective borehole thermal resistance, and undisturbed ground temperature on the final design of the borehole system is evaluated.

KW - building energy use

KW - building envelope

KW - design

KW - energy efficiency

KW - ground-source

KW - Heating and cooling

U2 - 10.1080/17452007.2018.1555088

DO - 10.1080/17452007.2018.1555088

M3 - Article

AN - SCOPUS:85058157921

VL - 15

SP - 181

EP - 195

JO - Architectural Engineering and Design Management

JF - Architectural Engineering and Design Management

SN - 1745-2007

IS - 3

ER -