Self-commissioning glare-based control system for integrated venetian blind and electric lighting

Motamed, Ali; Bueno, Bruno; Deschamps, Laurent; Kuhn, Tilmann E.; Scartezzini, Jean-Louis

doi:10.1016/j.buildenv.2019.106642

Cited by 23 publications

(8 citation statements)

References 19 publications

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“…irradiance, illuminance). Only a few predictive control methods can consider some contextual factors and physiological individual preferences [8,9].…”

Section: Simulation/optimization Methodsmentioning

confidence: 99%

Exploring the potential of dynamic façade systems: an exterior shading system versus a switchable window

Kheybari

Hoffmann

2020

Bauphysik

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Untersuchung des Potenzials von dynamischen Fassadensystemen: außenliegender Sonnenschutz im Vergleich mit schaltbarer Verglasung Dynamische Fassadensysteme spielen eine wichtige Rolle in der Leistungsfähigkeit eines Gebäudes, indem sie die Menge der in den Raum durchgelassenen Sonnenstrahlung anpassen und auf die Umgebungsbedingungen reagieren. Dieser Beitrag bewertet zwei Arten dynamischer Fassadensysteme mit verschiedenen Steuerungsstrategien und deren Einwirkungen auf die Energie, die visuelle und die thermische Behaglichkeit in einem Bürogebäude. Dieser Aufsatz untersucht die simulierten stündlichen/jährlichen Ergebnisse von außenliegenden Jalousien im Vergleich zu elektrochromer Verglasung (EC) für einen Großraumbüro mit nach Süden ausgerichteten Fenstern, die durch verschiedene Steuerungsstrategien wie manuelle, strahlungsbasierte, beleuchtungsstärkenbasierte und optimale Steuerungsszenarien beschattet werden, um die allgemeinen Fähigkeiten und Grenzen beider Verschattungssysteme aufzuzeigen. Die Ergebnisse zeigen, dass eine ausgereifte automatische Steuerungsstrategie die visuelle und thermische Behaglichkeit sowie eine standortabhängige Gesamtenergieeinsparung von bis zu 38 % für eine EC‐Verglasung und bis zu 49 % für Außenjalousien gewährleisten kann.

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“…irradiance, illuminance). Only a few predictive control methods can consider some contextual factors and physiological individual preferences [8,9].…”

Section: Simulation/optimization Methodsmentioning

confidence: 99%

Exploring the potential of dynamic façade systems: an exterior shading system versus a switchable window

Kheybari

Hoffmann

2020

Bauphysik

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“…Advanced building sensing and control technologies interact with façade elements and the indoor environment: fostering human-building interaction (HBI), they provide a user-centric approach favoring users' visual and thermal comfort. These include a glare-meter based on a high dynamic range (HDR) light sensor [19,20] which controls the venetian blinds and the electric lighting in the open-space office: the control logic is designed to incorporate thermal, visual, and non-image-forming effects of light. All technologies related to the envelope are complementary to touch all the aspects of building performance, from passive to active solar gains, from tailor-made smart materials to advanced control loops.…”

Section: Description Of the Unitmentioning

confidence: 99%

Performance Assessment of a nZEB Carbon Neutral Living/Office Space and Its Integration into a District Energy-Hub

et al. 2022

Self Cite

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The integrated performance assessment of buildings can orient their design in the early stages. Despite the wide availability of physics simulation-based, data-driven, and hybrid techniques, it is often difficult to rely on a single, appropriate technique to obtain reliable results. A set of methods, each featuring advantages and limitations, help to refine the performance assessment in an iterative comparative process until a comprehensive picture of the building is achieved. The approach was implemented on a nearly zero-energy building, recently built-up as a combined living and office space (e.g., the SolAce unit) on the NEST infrastructure in Dübendorf (Switzerland). The proposed approach showed that the unit reaches high energy performance accordingly requiring optimal cooling management, involving the control of the opening of blinds and windows. A sound convergence between the computer simulations and data-driven analysis were observed, attesting to the overall energy consumption, of around 26 kWh/m2year, in continuous decrease, aiming at an annual energy-positive balance. The unit was ranked first according to the dynamic energy exchange scheme of the energy trading hub within the NEST facility, which features high-level building modules as a testbed of future building technologies. Embodied energy is estimated at 39 kWh/m2year, which is below the commended limits of Swiss eco-building standards. By considering the carbon sequestration of the wood products during their lifespan, the unit is very close to carbon neutrality with the CO2 emitted annually by the unit over its lifetime being compensated by those stored within wood products during the same period.

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“…Therefore, it was highlighted that a special consideration should be given not only to the design of BACS but also its operation, which needs to be considered to be a major component in buildings initial and retro-commissioning processes. In this regard, Motamed et al [37] developed and implemented a self-commissioning approach focusing on a rule-based control logic and aiming to enhance the automation level of shading and lightning systems. The implementation of the self-commissioning approach has led to major positive impacts including higher visual comfort, less energy consumption and a smoother control methodology.…”

Section: Building Automation System Auditing and Evaluationmentioning

confidence: 99%

AUSTRET: An Automated Step Response Testing Tool for Building Automation and Control Systems

Santos

Jradi

2021

Energies

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Building energy consumption is still one of the main contributions to global carbon emissions. With the overall digitalization in the building sector, building automation and control systems (BACS) are to play a more important and key role in improving the building sector performance. A well-designed BACS at the building design phase with a high level of control functionalities is not a guarantee for efficient building operation and successful control and management strategies in the operational phase. Thus, a systematic automated initial and retro-commissioning process is key to test the performance of the automation system and the response of the integrated HVAC systems. This is an arduous and time-consuming task susceptible to human errors. As an alternative, the current study proposes a methodological framework to automate step response testing of BACS and to optimize the different steps of this process in a cost-effective way. In addition to newly built buildings, the framework can be applied in existing or retrofitted medium to large-sized buildings that have a building management system capable of receiving actuator commands and responsible to provide updates of several state variables. Based on the proposed framework, a first-of-its kind tool “AUSTRET” for building automated step response testing of BACS is designed and developed. The tool provides the necessary input configuring parameters, building system selection, and output results for each performed test. The framework aims to act upon ventilation, room heating and cooling, and water heating and cooling modules in a building. The implementation and demonstration of the AUSTRET in a medium-sized building case study for two different building systems are presented and evaluated: (1) Ventilation/fan, (2) Room heating. The results show the different dynamic responses on these two systems and how misleading input parameter configuration can invalidate step response tests. The preliminary results highlight the capability of using AUSTRET as a key component in both building initial and retro-commissioning applications.

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Self-commissioning glare-based control system for integrated venetian blind and electric lighting

Cited by 23 publications

References 19 publications

Exploring the potential of dynamic façade systems: an exterior shading system versus a switchable window

Exploring the potential of dynamic façade systems: an exterior shading system versus a switchable window

Performance Assessment of a nZEB Carbon Neutral Living/Office Space and Its Integration into a District Energy-Hub

AUSTRET: An Automated Step Response Testing Tool for Building Automation and Control Systems

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