The Experts below are selected from a list of 16449 Experts worldwide ranked by ideXlab platform
Christoph Herrmann - One of the best experts on this subject based on the ideXlab platform.
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The water–energy nexus in manufacturing systems: Framework and systematic improvement approach
CIRP Annals, 2017Co-Authors: Sebastian Thiede, Denis Kurle, Christoph HerrmannAbstract:Abstract Factories consist of production equipment, technical Building services (TBS) and Building Shell, which are connected through interdependent energy and resource flows. The relationship of water and energy flows (water–energy nexus) is an important example—it couples energy and water demands in manufacturing (e.g. cooling, heating, cleaning) with TBS such as boilers, cooling systems or water treatment. While being intensively discussed in context of e.g. industrial ecology, there is no systematic methodological support to improve the water–energy nexus towards sustainability in manufacturing. Therefore, the paper provides a framework and methodology for systematic improvement, which is applied within a case study.
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multi level simulation in manufacturing companies the water energy nexus case
Journal of Cleaner Production, 2016Co-Authors: Sebastian Thiede, Malte Schonemann, Denis Kurle, Christoph HerrmannAbstract:Abstract Factories consist of production equipment, technical Building services and a Building Shell, which are dynamically connected through energy and resource flows. An isolated analysis of flows cannot sufficiently consider the strong interdependencies and mutual relationship between resources. Because of that, it is relevant to acquire a sound understanding of conflicting and synergetic interactions between resources, in order to assess risks and to avoid problem shifting. The close intertwining of water and energy demand (water-energy nexus) in a factory exemplary represents a prominent relationship of coupled resources at all factory elements through different flows. To analyze and evaluate potential problem shifts as well as dynamic system/factory behavior, simulation has proven to be an appropriate method. However, simulation approaches often have a limited scope and address only isolated manufacturing system levels. Moreover, existing multi-level and multi-model approaches do not clearly state the method used for level selection, transferred parameters and coupling options for different models. This paper presents a multi-level simulation framework and recommendations for selecting coupling concepts. The recommendations refer to the simulation goals and the involved data to be exchanged between the different simulation models and factory elements. The framework supports developing coupled simulation models and it helps to address and assess problem shift issues. This is shown by exemplarily applying the framework in the context of the water-energy nexus of an automotive factory. The application reveals amplifying as well as attenuating effects of potential improvement measures on the water and energy demand indicating the importance of gaining a holistic factory perspective.
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3d Thermal Climate Monitoring in Factory Buildings
Procedia CIRP, 2015Co-Authors: Gerrit Posselt, Sebastian Thiede, Paul Sebastian Booij, J.e. Fransman, B.j.f. Driessen, Christoph HerrmannAbstract:Guaranteeing defined conditions, such as the temperature levels inside the factory's Building Shell, is often important to produce high-quality products. Heating, ventilation and air conditioning (HVAC) equipment, as part of the technical Building services, is energy intensive and accounts for a major share of the factory's energy demand. For an effective utilisation, the HVAC system control has to compensate time dependent variations of Building-internal loads and demands as well as changing weather conditions that can cause local temperature differences. In this paper, a computational fluid dynamic model, coupled with a wireless sensor network, is presented that allows the estimation of the temperature and air flows at every position in the factory Building, in real-time. This can then be used to improve control strategies of HVAC systems towards a more energy efficient and demand oriented climate conditioning within factory Building Shells. © 2015 The Authors. Published by Elsevier B.V.
Pedro J Mago - One of the best experts on this subject based on the ideXlab platform.
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design and operation of increased thermal capacitance and dual thermal storage and its effects on Building energy dependence
Sustainable Energy Technologies and Assessments, 2019Co-Authors: Mary Wilson, Pedro J MagoAbstract:Abstract This research explores the design and operation of an increased thermal capacitance (ITC) and thermal storage management (TSM) system for reducing Building energy consumption associated with heating, cooling, and domestic hot water (DHW) usage. Thermal capacitance is a controlling factor for phase shift and amplitude reductions of cyclical heat transfer due to weather, and control of the ITC through TSM improves upon the benefits offered by additional capacitance. Using the transient energy modeling software TRNSYS, ITC is achieved by water circulating in copper pipes embedded in the walls of a three-story residential Building. Temperature and season-controlled valves divert circulation to either the Building Shell, ground heat exchanger, solar panel, cold storage tank or hot storage tank. A phase change material is thoroughly mixed into the water storage tanks to allow a tank volume reduction without loss of thermal storage. Proper design and operation of the ITC/TSM system are investigated through a parametric study of the water tank size, water mass flowrate, and solar panel size. These analyses are focused on reducing the overall Building energy requirement associated with the heat pump and DHW usage. Results range from 24% to 35% energy savings for the evaluated parameter ranges.
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Building energy management using increased thermal capacitance and thermal storage management
Buildings, 2018Co-Authors: Mary Wilson, Rogelio Luck, Pedro J MagoAbstract:This study simulates an increased thermal capacitance (ITC) and thermal storage management (TSM) system to reduce the energy consumed by air conditioning and heating systems. The ITC/TSM is coupled with phase change materials (PCM), which enable tank volume reduction. The transient energy modeling software, the Transient System Simulation Tool (TRNSYS), is used to simulate the Buildings’ thermal response and energy consumption, as well as the ITC/TSM system and controls. Four temperature-controlled operating regimes are used for the tank: Building Shell circulation, heat exchanger circulation, solar panel circulation, and storage. This study also explores possible energy-saving benefits from tank volume reduction such as losses associated with the environment temperature due to tank location. Three different tank locations are considered in this paper: outdoor, buried, and indoor. The smallest tank size (five gallons) is used for indoor placement, while the large tank (50 gallons) is used either for outdoor placement or buried at a depth of 1 m. Results for Atlanta, Georgia show an average 48% required energy decrease for cold months (October–April) and a 3% decrease for warm months (May–September) for the ITC/TSM system with PCM when compared with the reference case. A system with PCM reduces the tank size by 90% while maintaining similar energy savings.
Angele Reinders - One of the best experts on this subject based on the ideXlab platform.
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experimental research on the use of micro encapsulated phase change materials to store solar energy in concrete floors and to save energy in dutch houses
Solar Energy, 2011Co-Authors: Alexis Gerardus Entrop, Hjh Jos Brouwers, Angele ReindersAbstract:In this paper an experimental research is presented on a new use of Phase Change Materials (PCMs) in concrete floors, in which thermal energy provided by the sun is stored in a mix of concrete and PCMs. When this thermal energy is being released – in moderate sea climates during the evening and early night – it is aimed to reduce the need for thermal energy of conventional heating in houses. The temperatures of four concrete floors in closed environments were monitored to reflect on the influence of PCMs and type of insulation in relation to ambient temperatures and solar irradiation. The application of PCMs in concrete floors resulted in a reduction of maximum floor temperatures up to 16 ± 2% and an increase of minimum temperatures up to 7 ± 3%. The results show the relevance of an integral design in which the thermal resistance of the Building Shell, the sensible heat capacity of the Building and the latent heat capacity of the PCMs are considered simultaneously.
Sebastian Thiede - One of the best experts on this subject based on the ideXlab platform.
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The water–energy nexus in manufacturing systems: Framework and systematic improvement approach
CIRP Annals, 2017Co-Authors: Sebastian Thiede, Denis Kurle, Christoph HerrmannAbstract:Abstract Factories consist of production equipment, technical Building services (TBS) and Building Shell, which are connected through interdependent energy and resource flows. The relationship of water and energy flows (water–energy nexus) is an important example—it couples energy and water demands in manufacturing (e.g. cooling, heating, cleaning) with TBS such as boilers, cooling systems or water treatment. While being intensively discussed in context of e.g. industrial ecology, there is no systematic methodological support to improve the water–energy nexus towards sustainability in manufacturing. Therefore, the paper provides a framework and methodology for systematic improvement, which is applied within a case study.
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multi level simulation in manufacturing companies the water energy nexus case
Journal of Cleaner Production, 2016Co-Authors: Sebastian Thiede, Malte Schonemann, Denis Kurle, Christoph HerrmannAbstract:Abstract Factories consist of production equipment, technical Building services and a Building Shell, which are dynamically connected through energy and resource flows. An isolated analysis of flows cannot sufficiently consider the strong interdependencies and mutual relationship between resources. Because of that, it is relevant to acquire a sound understanding of conflicting and synergetic interactions between resources, in order to assess risks and to avoid problem shifting. The close intertwining of water and energy demand (water-energy nexus) in a factory exemplary represents a prominent relationship of coupled resources at all factory elements through different flows. To analyze and evaluate potential problem shifts as well as dynamic system/factory behavior, simulation has proven to be an appropriate method. However, simulation approaches often have a limited scope and address only isolated manufacturing system levels. Moreover, existing multi-level and multi-model approaches do not clearly state the method used for level selection, transferred parameters and coupling options for different models. This paper presents a multi-level simulation framework and recommendations for selecting coupling concepts. The recommendations refer to the simulation goals and the involved data to be exchanged between the different simulation models and factory elements. The framework supports developing coupled simulation models and it helps to address and assess problem shift issues. This is shown by exemplarily applying the framework in the context of the water-energy nexus of an automotive factory. The application reveals amplifying as well as attenuating effects of potential improvement measures on the water and energy demand indicating the importance of gaining a holistic factory perspective.
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3d Thermal Climate Monitoring in Factory Buildings
Procedia CIRP, 2015Co-Authors: Gerrit Posselt, Sebastian Thiede, Paul Sebastian Booij, J.e. Fransman, B.j.f. Driessen, Christoph HerrmannAbstract:Guaranteeing defined conditions, such as the temperature levels inside the factory's Building Shell, is often important to produce high-quality products. Heating, ventilation and air conditioning (HVAC) equipment, as part of the technical Building services, is energy intensive and accounts for a major share of the factory's energy demand. For an effective utilisation, the HVAC system control has to compensate time dependent variations of Building-internal loads and demands as well as changing weather conditions that can cause local temperature differences. In this paper, a computational fluid dynamic model, coupled with a wireless sensor network, is presented that allows the estimation of the temperature and air flows at every position in the factory Building, in real-time. This can then be used to improve control strategies of HVAC systems towards a more energy efficient and demand oriented climate conditioning within factory Building Shells. © 2015 The Authors. Published by Elsevier B.V.
Andra Blumberga - One of the best experts on this subject based on the ideXlab platform.
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Inverse Modelling of Climate Adaptive Building Shells. System Dynamics Approach
Environmental and Climate Technologies, 2020Co-Authors: Toms Mols, Andra BlumbergaAbstract:AbstractThe paper describes the development of a computer-based inverse model for climate adaptive Building Shell which is in the cold climatic conditions of Latvia to determine changes in energy consumption. Types, principles of operation and classification of climate adaptive Building Shells (CABS) were reviewed and CABS most fitting to Latvia’s climate conditions were chosen for application in the model. Research implies that Building modelling tools play an important role in the design phase. The results indicate that hourly facade adjustment can have a significant impact on GHG emissions and energy consumption reduction without compromising the comfort level. Optimization is proven to be an essential part of the inverse modelling phase, which provides the best possible option defined by the user for the characteristics that distinguish climate adaptive Building Shells. Inverse modelling approach allowed to determine necessary Building enclosure parameters that need to be met to provide best performance.
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Heat transfer analysis by use of lense integrated in Building wall
Energy Procedia, 2017Co-Authors: Ruta Vanaga, Andra Blumberga, Reinis Purvins, Ivars Veidenbergs, Dagnija BlumbergaAbstract:Abstract To achieve energy efficiency targets set for Building sector in EU, innovative thermal envelope materials should be implemented. Currently available materials have static thermodynamic properties. In the era of intelligent materials and gadgets responsive flexibilities can be applied to Building materials as well. Paper illustrates proposal for climate adaptive Building Shell element – cell that operates as media in solar energy accumulation and release to internal space.
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Evaluation of climate adaptive Building Shells: multi-criteria analysis
Energy Procedia, 2017Co-Authors: Toms Mols, Andra Blumberga, Ieva KarklinaAbstract:Abstract The paper defines the most suitable climate adaptive Building Shell technology for Latvian climate conditions by application of multi-criteria analysis. During the analysis seven alternative technologies are considered and seven criteria are defined in order to make a well-grounded decision. The results indicate that the optimal would be a climate adaptive Building Shell technology that has integrated phase change materials.
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Mathematical Modelling of Performance of New Type of Climate Adaptive Building Shell
Energy Procedia, 2017Co-Authors: Maris Zamovskis, Ruta Vanaga, Andra BlumbergaAbstract:Abstract Authors have developed an idea – a new facade system able to adapt to ambient conditions in order to cut heating demand in winter. The facade is called Passive Heating Facade. The facade extracts ground heat from a shallow depth and consequently the temperature of the facade rises. The heat extraction is ensured by passive mechanisms only so no additional energy is necessary. In this work feasibility of proposed system is assessed by the Computational Fluid Dynamics tool ANSYS CFX 16.2. A mathematical model is also applied to calculate possible heat gains of the Passive Heating Facade. Initial analysis of the simplified mathematical model shows that the proposed system is able to extract ground heat for facade heating purposes. It was calculated that one component of the Passive Heating Facade is able to generate around 45 kWh in one season, however the final design consists of several systems.
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MATHEMATICAL INVESTIGATION OF CLIMATE ADAPTIVE Building Shell
Proceedings of the 19th Conference for Junior Researchers „Science – Future of Lithuania“, 2016Co-Authors: Maris Zamovskis, Ruta Vanaga, Andra Blumberga, Kristina BazienėAbstract:The European Parliament and Council Directive 2010/31/EU states that all member states of EU shall ensure that all new Buildings are nearly zero-energy after December 31 2020. For now, there are no efficient, cost effective and widely used tools to achieve such performance. To achieve the goal set out in the legislation there is a need for an appropriate solution in order to minimize energy consumption of a Building or obtain energy on site from renewable resources. The first method to achieve it is to minimize heat losses through the envelope of a Building in winter and prevent overheating in summer. Traditional construction types used in Buildings have static thermal properties. There is an energy efficiency potential in dynamic thermal properties of Building constructions. Ideas for such constructions can be found in nature following the biomimicry methodology that solves human problems inspired by processes in nature. In this paper a feasibility is studied of one proposed CABS (Climate Adaptive Building Shell) using a numerical analysis. The proposed CABS is a system where geothermal energy is used for facade heating thus minimizing heat losses through Building envelope and utilizing renewable energy. A geothermal heat from shallow depth of 3.2 m is utilized. The CABS consists of a piping system built in the facade of a Building ensuring a circulation of a heat-transfer medium which is transporting the heat from the ground where the temperature is constant all year to the facade. Circulation of a fluid is ensured by buoyancy forces alone. The resulting rise of facade temperature reduces peak primary energy demand thus improving Building performance. The mechanism of this CABS is inspired by the blood vessel system in animals. For the numerical analysis ANSYS Fluent 16.2 is used. DOI: https://doi.org/10.3846/aainz.2016.32
