| 1. |
- Altomonte, Sergio, et al.
(författare)
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Evaluating integrated lighting projects - A Procedure to Post-Occupancy Evaluation of Daylight and Electrical Lighting Integrated Projects
- 2021
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This report presents tools for post-occupancy evaluation (POE) to evaluate indoor lighting of commissioned projects (‘case studies’) under a common framework. In this report, POE includes technical environmental assessment (TEA) and observer-based environmental assessment (OBEA). The framework proposed in this report evaluates four key aspects of the case study:1. Energy use (electrical lighting systems),2. Visual effects (Indoor lighting environment /photometry)3. Non-visual effects (circadian potential), and4. The user (subjective/surveys and observations)The report targets industry professionals, building designers, lighting designers, building managers, researchers and/or owners wishing to evaluate projects where lighting is supplied by a combination of electrical lighting, daylighting systems (e.g., fenestrations) and assisted technologies (e.g., smart sensors). The framework in this report makes available methods and procedures related to the evaluation of integrated lighting performance in residential and non-residential buildings and its impact on users, and it summarises and categorize methods and procedures in an accessible and industry-oriented language.The content of this document is based on methods and procedures used by participating experts in IEA SHC Task 61 for monitoring twenty-five worldwide integrated daylighting and electric lighting case studies. Since integrated lighting projects are different in type and scopes, the methods and procedures included in the framework do not follow a rigid protocol. Practitioners should use the framework to define the scope of POE monitoring in terms of the aims of the project, context, and resources available. The document is thus a toolbox for planning and executing the monitoring of their integrated lighting projects.
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| 2. |
- Altomonte, Sergio, et al.
(författare)
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Integrating daylighting and lighting in practice : Lessons learned from international case studies
- 2021
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This report presents lessons learned from twenty-five worldwide real-life case studies implementing the integration of daylighting and electric lighting. The case studies were monitored with respect to energy use for lighting, visual performance, non-visual performance, and users’ satisfaction. The monitoring is largely based on field measurements, but it is also complemented with simulations and calculations where needed.The report is divided in two parts. The first part provides an overview of the case studies and the overall lessons learned. The second part provides factsheets for each of the case studies; the factsheets include details on the monitoring, results, and specific lessons learned.Based on the lessons learned from the case studies, this report concludes that:• The energy demand for lighting is drastically reduced thanks to the combined effect of more efficient light sources, advances in controls, and raised awareness in the integration of daylighting and electric lighting.• Integrative lighting is currently driving the innovation in lighting technology and wider implementation is expected as knowledge in the field of non-visual requirements for lighting expands.• However, the current integration of the integrative lighting concept with daylighting in practice is limited, which may result in significant energy rebound (increases).• Daylighting integration is of utmost importance for achieving quality beyond energy savings.• Integrated daylighting and electric lighting design is facing new challenges: questions connected with comfort and health are yet to be answered
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| 3. |
- Campamà Pizarro, Rafael, et al.
(författare)
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Simulating Energy Renovation Towards Climate Neutrality. Digital Workflows and Tools for Life Cycle Assessment of Collective Housing in Portugal and Sweden
- 2024
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Ingår i: Architecture and Design for Industry 4.0 : Theory and Practice - Theory and Practice. - 2195-4364 .- 2195-4356. - 9783031369247 - 9783031369223 ; Part F1562, s. 747-768
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Bokkapitel (refereegranskat)abstract
- This chapter compares two digital workflows and tool selection for best practice renovation simulation in Portugal and Sweden. Both workflows are part of ongoing research projects that seek to provide a robust workflow adapted to different user needs and scale implementation. While in Portugal, the focus is on the building, the assessment is scaled up to the neighbourhood in Sweden. Geographic information systems datasets are used to streamline the modelling of buildings. The resulting models are used for the simulation and optimisation of renovation scenarios. These scenarios are evaluated as an equilibrium fit between user well-being (thermal and visual comfort), planet (entire carbon life cycle) and cost-effectiveness (energy and cost efficiency). The workflows presented are an example of computational architecture at work. Both workflows successfully interconnect different databases and disciplines to help the design teams and be a useful working tool for the different stakeholders in a renovation project. A complex context in which being flexible and transparent is necessary to make better and more informed decisions.
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| 4. |
- Campamà Pizarro, Rafael, et al.
(författare)
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Streamlining Building Energy Modelling Using Open Access Databases—A Methodology towards Decarbonisation of Residential Buildings in Sweden
- 2023
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Ingår i: Sustainability (Switzerland). - : MDPI AG. - 2071-1050. ; 15:5
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Tidskriftsartikel (refereegranskat)abstract
- The building sector is a major contributor to greenhouse gases, consuming significant energy and available resources. Energy renovation of buildings is an effective strategy for decarbonisation, as it lowers operational energy and avoids the embodied impact of new constructions. To be successful, the energy renovation process requires meaningful building models. However, the time and costs associated with obtaining accurate data on existing buildings make large-scale evaluations unrealistic. This study proposes a methodology to streamline building energy models from open-access datasets for urban scalability. The methodology was tested on six case study buildings representing different typologies of the Swedish post-war construction period. The most promising results were obtained by coupling OpenStreetMap-sourced footprints with energy performance declarations and segmented archetypes for building characterisation. These significantly reduced simulation time while retaining similar accuracy. The suggested methodology streamlines building energy modelling with a promising degree of automation and without the need for input from the user. The study concludes that municipalities and building owners could use a such methodology to develop roadmaps for cities to achieve carbon neutrality and evaluate energy renovation solutions. Future work includes achieving higher accuracy of the generated energy models through calibration, performing renovation analysis, and upscaling from individual buildings to neighbourhoods.
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| 5. |
- Gremmelspacher, Jonas Manuel, et al.
(författare)
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Historical building renovation and PV optimisation towards NetZEB in Sweden
- 2021
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Ingår i: Solar Energy. - : Elsevier BV. - 0038-092X. ; 223, s. 248-260
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Tidskriftsartikel (refereegranskat)abstract
- Retrofitting historical buildings towards net zero energy building (NetZEB) in Northern countries is facing some issues confirmed in the literature review of this study. Following a holistic approach proposed by the authors, a 150-year old castle situated in Helsingborg, Sweden, was used to evaluate the potential of historical buildings in the Nordics to be turned into a NetZEB building. Following a retrofit tailored to achieve energy-savings in the historical building which was done in a previous study, the installation of a photovoltaic (PV) system, to cover the primary energy use of the building on a net annual basis was proposed. Building integration of the PV system was proven not to be realistic due to historical sensitivity as well as low irradiation due to overshadowing on the roofs of the historical buildings. Alternatively, the concept of landscape integrated PV was followed and the system covering the energy use of the castle was optimised in azimuth and tilt to provide the highest possible monetary results for electricity expenses for the castle weighed with the rate for feeding electricity to the grid. A second PV-system was optimised in azimuth and tilt, however, according to the maximum electricity generation. Life-cycle costing (LCC) calculations using the Net Present Value (NPV) method were used to determine the viability of both PV systems according to nine financial scenarios. A comparison of generated primary energy and primary energy use of the historical building was presented for two scenarios and it showed that reaching NetZEB was possible for the presented case study object.
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| 6. |
- Gremmelspacher, Jonas Manuel, et al.
(författare)
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Sofiero park : A historic building renovation with optimising photovoltaics according to hourly load profile
- 2020
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Ingår i: Proceedings of the ISES Solar World Congress 2019 and IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019. - 9783982040813 ; , s. 1791-1801
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Konferensbidrag (refereegranskat)abstract
- Retrofitting historical buildings was neglected for many years, as common systems could not be used. Now that technology has evolved, retrofitting buildings worth preserving is getting more common and can play a significant role in reaching climate targets by reducing the energy use. In order to produce equally much or more energy as the respective buildings use renewably and on site, the exploitation of photovoltaic systems has come to the fore over the past decades. This study focusses on the energy efficiency retrofit of a 150-year old castle situated in a recreational park, which was parametrically assessed by means of numerical modelling through building performance simulations. In order to achieve economic feasibility of the performed measures life cycle costing was employed. The reduced energy use of Sofiero Castle composing into an hourly load profile is used to optimise a photovoltaic system carried out by parametrical modelling. By implementing a second photovoltaic system, optimised for the highest annual electricity yield, an energy surplus was achieved. On an annual basis the castle reaches a net zero energy performance with the exploration of on-site renewable energy production. The optimisation has shown, that financial feasibility can not be reduced to the highest energy yield and photovoltaic optimisations aiming for a high self-sufficiency should carry out a parametric optimisation.
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| 7. |
- Pizarro, Rafael Campamà, et al.
(författare)
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A case study addressing the benefits of daylighting and electric lighting integration in the retail sector
- 2020
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Ingår i: Proceedings of the ISES Solar World Congress 2019 and IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019. - Freiburg, Germany : International Solar Energy Society. - 9783982040813 ; 1, s. 1825-1836
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Konferensbidrag (refereegranskat)abstract
- This article describes field monitoring and supplementary simulations of an existing daylighting and electric lighting integrated design for a furniture store. First in its type, the store includes several areas of the showroom provided with abundant daylighting. For the monitoring, the areas of the living rooms and the home decoration exhibitions were selected. They include wide glazed areas, daylight harvesting systems, and tunable lighting. The monitoring procedure assesses four aspects: energy use, objective or measurable lighting conditions, circadian potential, and subjective evaluation of lighting. The results suggest that the integration project was successful in terms of energy saving, as well as customer and staff appreciation. The customers were more attentive to daylighting; they also report a better shopping experience compared to equivalent shops. Staff showed satisfaction with the electric lighting solutions, for example with LED panels with automatic tuning of correlated color temperature. For future projects, the article argues that daylighting in furniture shops may be an asset. In addition, for the methodological part, the monitoring suggests that objective and subjective evaluations should be always combined for a full understanding of the integrated project.
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