Hall, Monika

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Hall
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Monika
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Hall, Monika

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Thema: autarky × Thema: self-consumption ×

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Gerade angezeigt 1 - 2 von 2
  • Vorschaubild
    Publikation
    The impact of different energy balancing methods on Net Zero Energy Buildings
    (03.10.2017) Hall, Monika; Geissler, Achim [in: 12th Conference on Advanced Building Skins]
    To date, the building energy balance is typically based on annual values. If the annual PV-yield equals the overall annual energy demand, the building is called a Net Zero Energy Building (NZEB). Of course, this balancing approach does not take into account that PV-yield and electricity energy demand do not necessarily occur at the same time. However, Swiss standards and the building label Minergie have begun to address this issue. The Swiss standard SIA 380:2015, and the Minergie recast 2017 include self-consumption/grid-interaction in the energy balance. Currently, for the energy balance PV-yield and electricity demand are usually weighted with the same primary energy factor. Minergie 2017 retains this, but SIA 380:2015 features different (asymmetrical) primary energy factors for import from and export to the grid. This necessarily has a large impact on the resulting energy balance. The primary energy factor for import from the grid depends on the chosen type of the power mix in the grid. If this factor is higher than the primary energy factor of the PV-system, a larger PV system than when using symmetrical factors is required in order to fulfil the NZEB balance. The impact of balancing method of SIA 380:2015 and Minergie-A on a Net Zero Energy Building are discussed. It is found that the newly introduced definitions for the building energy balance have a large impact on the grid interaction.
    04 - Beitrag Sammelband oder Konferenzschrift
  • Vorschaubild
    Publikation
    PVopti - hourly based energy balance for building design
    (Elsevier, 2017) Hall, Monika; Burger, Bastian [in: Energy Procedia]
    PVopti is a freeware tool to calculate hourly energy balance for different building types. It is simple to use and it quickly calculates self-consumption for different designs. Load profiles according to SIA 2024 are used to distribute yearly values on hours. For demand of lighting a criterion for daylight is added. Compared with measurements of single family houses and apartment buildings, self-consumption calculated with PVopti shows very good agreement. Currently, a German version is available on www.minergie.ch, soon there will be versions for 4 languages (dt, fr, it, en).
    01A - Beitrag in wissenschaftlicher Zeitschrift