How to Define Nearly Net Zero Energy Buildings nZEB: REHVA proposal for uniformed national implementation of EPBD recast

Jarek Kurnitski, Francis Allard, Derrick Braham, Guillaume Goeders, Per Heiselberg, Lennart Jagemar, Risto Kosonen, Jean Lebrun, Livio Mazarella, Jorma Railio, Olli Seppänen, Michael Schmidt, Maija Virta

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Resumé

This REHVA Task Force proposes a technical definition for nearly zero energy buildings required in the implementation of the Energy performance of buildings directive recast. Energy calculation framework and system boundaries associated with the definition are provided to specify which energy flows in which way are taken into account in the energy performance assessment. The intention of the Task Force is to help the experts in the Member States in defining the nearly zero energy buildings in a uniform way. The directive requires nearly zero energy buildings, but since it does not give minimum or maximum harmonized requirements as well as details of energy performance calculation framework, it will be up to the Member State to define what these for them exactly constitute. In the definition, local conditions are to be obviously taken into account, but the uniform methodology can be used in all Member States. The directive defines nearly zero energy buildings as a building that has a very high energy performance and requires the calculation of primary energy indicator. The nearly zero of very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site nearby. Based on the directive’s definition, nearly zero energy buildings is technically defined through the net zero energy building, which is a building using 0 kWh/(m2a) primary energy. Following the cost-optimality principle of the directive, nearly net zero energy building definition is proposed as a national cost optimal energy use of > 0kWh/(m2a) primary energy. In order to end up with proposed general definition, it was needed to clarify which energy flows shall be included in energy performance assessment and how the primary energy factors should be used for primary energy indicator calculation. For the uniform methodology, a general system boundary definition was established with inclusion of active solar and wind energy, as well as the guidance for technical meaning of “nearby” in the directive.
OriginalsprogEngelsk
TidsskriftREHVA Journal
Vol/bind48
Udgave nummer3
Sider (fra-til)6-12
Antal sider7
ISSN1307-3729
StatusUdgivet - 2011

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Kurnitski, J., Allard, F., Braham, D., Goeders, G., Heiselberg, P., Jagemar, L., ... Virta, M. (2011). How to Define Nearly Net Zero Energy Buildings nZEB: REHVA proposal for uniformed national implementation of EPBD recast. REHVA Journal, 48(3), 6-12.
Kurnitski, Jarek ; Allard, Francis ; Braham, Derrick ; Goeders, Guillaume ; Heiselberg, Per ; Jagemar, Lennart ; Kosonen, Risto ; Lebrun, Jean ; Mazarella, Livio ; Railio, Jorma ; Seppänen, Olli ; Schmidt, Michael ; Virta, Maija. / How to Define Nearly Net Zero Energy Buildings nZEB : REHVA proposal for uniformed national implementation of EPBD recast. I: REHVA Journal. 2011 ; Bind 48, Nr. 3. s. 6-12.
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title = "How to Define Nearly Net Zero Energy Buildings nZEB: REHVA proposal for uniformed national implementation of EPBD recast",
abstract = "This REHVA Task Force proposes a technical definition for nearly zero energy buildings required in the implementation of the Energy performance of buildings directive recast. Energy calculation framework and system boundaries associated with the definition are provided to specify which energy flows in which way are taken into account in the energy performance assessment. The intention of the Task Force is to help the experts in the Member States in defining the nearly zero energy buildings in a uniform way. The directive requires nearly zero energy buildings, but since it does not give minimum or maximum harmonized requirements as well as details of energy performance calculation framework, it will be up to the Member State to define what these for them exactly constitute. In the definition, local conditions are to be obviously taken into account, but the uniform methodology can be used in all Member States. The directive defines nearly zero energy buildings as a building that has a very high energy performance and requires the calculation of primary energy indicator. The nearly zero of very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site nearby. Based on the directive’s definition, nearly zero energy buildings is technically defined through the net zero energy building, which is a building using 0 kWh/(m2a) primary energy. Following the cost-optimality principle of the directive, nearly net zero energy building definition is proposed as a national cost optimal energy use of > 0kWh/(m2a) primary energy. In order to end up with proposed general definition, it was needed to clarify which energy flows shall be included in energy performance assessment and how the primary energy factors should be used for primary energy indicator calculation. For the uniform methodology, a general system boundary definition was established with inclusion of active solar and wind energy, as well as the guidance for technical meaning of “nearby” in the directive.",
author = "Jarek Kurnitski and Francis Allard and Derrick Braham and Guillaume Goeders and Per Heiselberg and Lennart Jagemar and Risto Kosonen and Jean Lebrun and Livio Mazarella and Jorma Railio and Olli Sepp{\"a}nen and Michael Schmidt and Maija Virta",
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Kurnitski, J, Allard, F, Braham, D, Goeders, G, Heiselberg, P, Jagemar, L, Kosonen, R, Lebrun, J, Mazarella, L, Railio, J, Seppänen, O, Schmidt, M & Virta, M 2011, 'How to Define Nearly Net Zero Energy Buildings nZEB: REHVA proposal for uniformed national implementation of EPBD recast', REHVA Journal, bind 48, nr. 3, s. 6-12.

How to Define Nearly Net Zero Energy Buildings nZEB : REHVA proposal for uniformed national implementation of EPBD recast. / Kurnitski, Jarek; Allard, Francis; Braham, Derrick; Goeders, Guillaume; Heiselberg, Per; Jagemar, Lennart; Kosonen, Risto; Lebrun, Jean; Mazarella, Livio; Railio, Jorma; Seppänen, Olli; Schmidt, Michael; Virta, Maija.

I: REHVA Journal, Bind 48, Nr. 3, 2011, s. 6-12.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - How to Define Nearly Net Zero Energy Buildings nZEB

T2 - REHVA proposal for uniformed national implementation of EPBD recast

AU - Kurnitski, Jarek

AU - Allard, Francis

AU - Braham, Derrick

AU - Goeders, Guillaume

AU - Heiselberg, Per

AU - Jagemar, Lennart

AU - Kosonen, Risto

AU - Lebrun, Jean

AU - Mazarella, Livio

AU - Railio, Jorma

AU - Seppänen, Olli

AU - Schmidt, Michael

AU - Virta, Maija

PY - 2011

Y1 - 2011

N2 - This REHVA Task Force proposes a technical definition for nearly zero energy buildings required in the implementation of the Energy performance of buildings directive recast. Energy calculation framework and system boundaries associated with the definition are provided to specify which energy flows in which way are taken into account in the energy performance assessment. The intention of the Task Force is to help the experts in the Member States in defining the nearly zero energy buildings in a uniform way. The directive requires nearly zero energy buildings, but since it does not give minimum or maximum harmonized requirements as well as details of energy performance calculation framework, it will be up to the Member State to define what these for them exactly constitute. In the definition, local conditions are to be obviously taken into account, but the uniform methodology can be used in all Member States. The directive defines nearly zero energy buildings as a building that has a very high energy performance and requires the calculation of primary energy indicator. The nearly zero of very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site nearby. Based on the directive’s definition, nearly zero energy buildings is technically defined through the net zero energy building, which is a building using 0 kWh/(m2a) primary energy. Following the cost-optimality principle of the directive, nearly net zero energy building definition is proposed as a national cost optimal energy use of > 0kWh/(m2a) primary energy. In order to end up with proposed general definition, it was needed to clarify which energy flows shall be included in energy performance assessment and how the primary energy factors should be used for primary energy indicator calculation. For the uniform methodology, a general system boundary definition was established with inclusion of active solar and wind energy, as well as the guidance for technical meaning of “nearby” in the directive.

AB - This REHVA Task Force proposes a technical definition for nearly zero energy buildings required in the implementation of the Energy performance of buildings directive recast. Energy calculation framework and system boundaries associated with the definition are provided to specify which energy flows in which way are taken into account in the energy performance assessment. The intention of the Task Force is to help the experts in the Member States in defining the nearly zero energy buildings in a uniform way. The directive requires nearly zero energy buildings, but since it does not give minimum or maximum harmonized requirements as well as details of energy performance calculation framework, it will be up to the Member State to define what these for them exactly constitute. In the definition, local conditions are to be obviously taken into account, but the uniform methodology can be used in all Member States. The directive defines nearly zero energy buildings as a building that has a very high energy performance and requires the calculation of primary energy indicator. The nearly zero of very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site nearby. Based on the directive’s definition, nearly zero energy buildings is technically defined through the net zero energy building, which is a building using 0 kWh/(m2a) primary energy. Following the cost-optimality principle of the directive, nearly net zero energy building definition is proposed as a national cost optimal energy use of > 0kWh/(m2a) primary energy. In order to end up with proposed general definition, it was needed to clarify which energy flows shall be included in energy performance assessment and how the primary energy factors should be used for primary energy indicator calculation. For the uniform methodology, a general system boundary definition was established with inclusion of active solar and wind energy, as well as the guidance for technical meaning of “nearby” in the directive.

M3 - Journal article

VL - 48

SP - 6

EP - 12

JO - REHVA Journal

JF - REHVA Journal

SN - 1307-3729

IS - 3

ER -