HFTor - HfT Open Repository (Hochschule für Technik Stuttgart)
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Anything as a Service in der Industrie: Zwischen Hype und Realität. Vom konventionellen Produktionswerk zum resilienten Kompetenz-Werk durch Industrie 4.0
Get PDFIm Projekt Werk 4.0 arbeiten wir an flexiblen Fertigungslösungen für morgen. Ziel ist es, die Fähigkeiten der herstellenden Unternehmen in Deutschland zu stärken, um die Chancen und Herausforderungen der Zukunft zu meistern. Die gewonnenen Erkenntnisse werden unter anderem als Blaupause für den Automobilsektor in Deutschland dienen. Gemeinsam mit den Projektpartnern werden neue Technologien und Prozesse erforscht und erprobt. Der Teilbereich Arbeitspaket 7 (AP7) beleuchtet in diesem Zuge neue, innovative Geschäftsmodelle und wie diese von Zulieferern und Beschaffern in der gegenwärtigen sowie zukünftigen Industrie genutzt werden. Ein besonderes Augenmerk liegt auf sogenannten XaaS1 oder Anything as a Service Geschäftsmodellen, welche in den vergangenen Jahren wiederholt den Exkurs zu Geschäftsmodellinnovation dominiert haben. Das vorliegende Whitepaper gibt einen Einblick in die aktuelle Verbreitung und zukünftig geplante Nutzung von XaaS-basierten Geschäftsmodellen in einigen Unternehmen der deutschen Industrie
Noise Sensors -Part 2: Calculation of indoor levels from continuous measurements
No full textBuilding acoustic requirements for sound insulation against road traffic noise or other external noise are in Germany based on the so called relevant external noise level. From this A-weighted value averaged over the day and night, a target value for the sound pressure level in the interior can be determined using the weighted building sound insulation index R'w. In future, the spectrum adjustment values C and Ctr will be used to take better account of different noise spectra. In this article, continuous outdoor noise data is used to calculate the indoor levels with typical sound insulation values of the outdoor components. The frequency-dependent measurement data comes from a noise sensor built as part of a citizen science project, which provides this measurement data online at 5 s intervals. In addition to the spectral aspect, the temporal aspect of the changing outdoor noise in the city measured in the city centre of Stuttgart is also considered in the investigations and compared with the normative procedure
Wand-Pendellüfter – Möglichkeiten und Grenzen bei Schall, Feuchte und Energieeinsparung
No full textDurch die traditionelle Wohnraumlüftung über manuelles Öffnen von Fenstern kommt es zu erheblichen Wärmeverlusten in Gebäuden. Gleichzeitig können durch offene Fenster Lärm, Ungeziefer und insbesondere in Erdgeschosswohnungen auch Einbrecher eindringen. Eine automatische Lüftung stellt daher einen wesentlichen Gewinn an Komfort und Sicherheit dar und kann nicht zuletzt auch zur Energieeinsparung und damit zur Verbesserung der Klimabilanz beitragen. Während zentrale Lüftungsanlagen recht aufwändig sind und sich weniger für die Sanierung im Bestand eignen, stellen dezentrale Wandlüfter mit Wärmerückgewinnung (sogenannte Pendellüfter) eine mögliche Alternative dar. Mit dem kompakten Wandeinbau ergeben sich jedoch akustische Herausforderungen für die Schalldämmung der Fassade und den durch den eingebauten Ventilator selbst erzeugten Lärm. Für diese Studie wurden aktuell handelsübliche Wandlüfter hinsichtlich ihrer Akustik untersucht und mit den normativen Anforderungen verglichen. Dabei zeigten sich deutliche Unterschiede bei den gemessenen Norm-Schallpegeldifferenzen und Schallleistungspegeln. Zusätzlich wurden Aspekte des Feuchteschutzes und der möglichen Energieeinsparung an zwei Beispielen betrachtet und rechnerisch quantifiziert
HR-Risiken im Employee Lifecycle - Teil II
No full textIn Anbetracht des Fachkräftemangels stellen personelle Risiken eine zentrale Risikokategorie dar. Die systematisierte Analyse personeller Risiken und deren Quantifizierung sind allerdings erst wenig erforscht. Während sich der erste Teil des Beitrags (Controller Magazin 1/24) primär mit der Identifikation von Risiken entlang des Emplyoee Lifecycles befasste, werden im vorliegenden zweiten Teil Ansätze zu deren Quantifizierung und Steuerung vorgestellt
DFG-Project “Compact Courtyard Housing for Sustainable High-Density Settlements” – Final Report
Get PDFProf. Jan Cremers’ research group set itself the goal of reinterpreting and further developing the courtyard house type to meet the current requirements of sustainable urbanisation.
The hypothesis was pursued that courtyard houses have the potential to create sustainable, high-density neighbourhoods with a high degree of privacy and residential value and thus offer a feasible way out of the dilemma of conventional types, where high density and the resulting low spacing offer little privacy in the interior and exterior spaces.
Based on the principles and inherent regularities of the courtyard house, the so-called “compact courtyard house” was developed as a new type of courtyard house using an interdisciplinary and systematic approach with current tools while its functionality was examined step by step in further stages. The type pursues few, yet clearly defined goals and consequently shows characteristics that distinguish it from known courtyard house types. As a largely autonomous building, it is optimised on its own space-saving plot (approx. 60 to 200 m²) of varying proportions with three to five storeys for one or more parties, it can keep ownership simple and thus even function as a single-family house.
Courtyards / outdoor spaces shielded from view (instead of exposed “spacing areas” with a lower utility value outside the building) are integrated into the building structure as exclusively private usable areas (“as private as a bathroom“) assigned to individual parties. These protected areas are mainly used for lighting and ventilation of the interior spaces, merging interior and exterior spaces into a protected and closely interlinked living space.
The individual buildings are generally orientated towards the public or semi-public space on one side (e.g. street front), but are closed for add-on on three sides (fire walls). This way, compact courtyard houses of very different shapes and sizes can be added and combined as “building blocks” of a “modular system” to create high-density urban neighbourhoods. The topic is thus equally at home in architecture as well as urban planning.
To date, a total of eight basic types / concepts (C1 to C8) has been developed as the basis for a comprehensive typology with a wide range of variants that can be derived from the respective concepts’ basic geometric principles and solution strategies. The private courtyards, which vary in size, shape and location in the building, also have the function of microclimatic zones with a favourable effect on the thermal and acoustic comfort of the interior spaces
Enhancing Municipal Fleet Management in Smart Cities Through 5G Integration
No full textThis paper presents a revolutionary research initiative focused on improving municipal fleet management in smart cities by leveraging the power of 5G technology. Through adopting 5G, the municipality gains access to real-time communication, precise vehicle tracking, optimized route planning, and improved operational efficiency. Delving into the realm of 5G technology, the study examines its multiple applications in fleet management, including real-time monitoring and predictive maintenance strategies. The initial findings establish a robust foundation, laying the groundwork for forthcoming initiatives aimed at enhancing municipal fleet operations in smart cities through the seamless integration of 5G connectivity. Our objective is to amplify the impact of our work, making a substantial contribution to the continuous evolution of smart city infrastructures. Subsequent research endeavors will delve even deeper into the expansive potential of 5G, exploring its applications in fleet optimization, intelligent transportation systems, and innovative solutions for sustainable mobility
Bottom-up framework for modelling occupancy-based demand-side management strategies in a mixed-use district
No full textIn the context of electrification for different sectors, demand-side management (DSM) strategies are acknowledged as primary strategies to ensure the stability and reliability of the utility grid. Urban building energy modelling (UBEM) emerges as a critical tool for utilities to assess the impact of these strategies on the building sector's energy consumption and flexibility. However, relying on the developed models for this task is applicable only when detailed occupant-related inputs are integrated into the model. To this end, this paper aims to develop a framework to integrate high-resolution occupancy schedules into UBEM and showcase the application of the developed models in evaluating DSM strategies with different scenarios. The developed framework is applied to a mixed-use district in Montreal, Canada with 112 buildings as a case study. The main objectives of this study are 1) developing an urban scale high-resolution occupancy profile generator representative of Canadian commercial buildings using mobile positioning data, 2) investigating the diversity between the generated profiles of buildings within the same type, 3) developing a method to integrate the generated profiles into the Canadian commercial archetypes, and 4) evaluating the applicability of the developed model in evaluating DSM strategies by investigating the effect of occupant-centric control and occupancy-based demand response strategies on the modelled district energy use. The results of this study serve as a preliminary investigation into the crucial role that occupancy patterns can play in maximizing building energy flexibility with an estimated reduction in district peak demand by up to 17%. This study also paves the way for future research incorporating occupant feedback and comfort requirements for a more precise exploration of the proposed strategy