Hall, Monika
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Hall, Monika
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- PublikationNet zero enrgy balance for high-rise buildings(Advanced Building Skins, 2016) Hall, Monika; Geissler, Achim [in: Advanced Building Skins]Multifamily dwellings and office buildings with a square and a stretched footprint with up to 40 floors are considered for a net zero energy balance. A wide range of parameters is investigated in regard to their impact on the zero energy balance. The main results gained by the simulation based research described above can be summarized as follows: Only the HVAC zero balance can be achieved for up to 40 floors for all variants studied but one. The five main parameters in regard to achieving a HVAC or TE zero energy balance are, efficient electric devices and lighting, low heat demand, the type of heating system, the actually available area for PV and the overall efficiency of the PV-System. The results show that a net zero energy balance for HVAC only or for total energy can be achieved for large multifamily dwellings and office buildings of up to 40 floors. To this end, however, apart from a well-insulated building envelope, electronic devices, lighting and PV systems with a very high efficiency are necessary. With further improvements in the efficiency of devices, lighting and PV-systems, reaching the "zero" will become easier.04 - Beitrag Sammelband oder Konferenzschrift
- PublikationTaking the step towards Net Zero Energy Buildings - How will that affect the energy use from a life cycle perspective?(Ecole Polytechnique Fédérale de Lausanne (EPFL), 2013) Hall, Monika; Berggren, Björn; Wall, Maria [in: CISBAT]An important measure for climate change mitigation is reduction of energy use in buildings worldwide. There are today a growing number of buildings for which the design principle has been to achieve a Zero Energy Building (ZEB) or Net Zero Energy Building (Net ZEB). It is today generally assumed, when the energy use of a building is discussed from a LifeCycle perspective, that energy use in the operational phase of buildings accounts for 70-90% of energy used during its life cycle. However, a natural consequence is that for Net ZEBs the relative share of energy use related to building operation will decrease. Some might argue that the energy savings achieved related to building operation of a Net ZEB is lower compared to the increased energy use for production, maintenance and demolition. This study analyzes the change of embodied energy compared to the decrease of the energy use related to building operation; by literature review and detailed analysis of eleven case studies, taking the step from a low energy building to a Net ZEB.04 - Beitrag Sammelband oder Konferenzschrift