检索结果-内蒙古大学图书馆

Active Thermal Control of SiC MOSFETs Utilizing Transient Thermal Characterization

Active Thermal Control of SiC MOSFETs Utilizing Transient Th...

2024 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2024

作者： Kurukuru, Varaha Satya Bharath Hassan, Md. Nazmul Petrella, Roberto Research Division Power Electronics Silicon Austria Labs GmbH Austria PEMD Laboratory Polytechnic Department of Engineering and Architecture Italy

ISBN: (纸本)9783800762620

Effectively managing the temperature of Silicon Carbide (SiC) MOSFETs is essential for optimizing performance, especially in applications demanding high reliability and energy efficiency. Traditional thermal management techniques often struggle with the rapid thermal transients characteristic of these semiconductors, leading to potential overheating and reduced operational lifespan. Addressing this challenge, this research introduces an advanced active thermal control (ATC) strategy for a 3-phase dual converter system, employing field-oriented control (FOC) with discontinuous pulse-width modulation (DPWM) to drive permanent magnet synchronous machines (PMSM). By integrating transient thermal characterization into a support vector data descriptor (SVDD), this research achieves accurate estimation of virtual junction temperatures (Tvj), enabling more responsive thermal management. Simulations demonstrate the ATC system’s effectiveness, revealing a significant reduction in power loss. The proposed approach not only mitigates the risk of overheating but also promotes improved efficiency and longevity in SiC MOSFET-based power systems. © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： Synchronous machinery

来源：评论

学校读者我要写书评

暂无评论

Interactive architecture for Enhancing Energy Efficiency and Thermal Comfort in the Office Buildings

Interactive Architecture for Enhancing Energy Efficiency and...

引用

International Symposium on Networks, Markets and People, NMP 2024

作者： Hama Radha, Chro Shawkat, Sabah Technical College of Engineering Sulaimani Polytechnic University Sulaymaniyah Iraq Department of Architecture University of Fine Arts and Design Bratislava Slovakia

ISBN: (纸本)9783031747151

Thermal comfort and energy efficiency depend significantly on conditions prevalent in the environment, like the weather and climate. Optimizing thermal and energy efficiency is a challenging venture due to mutual conflicts occurring between the two. This research deliberates on how interactive architecture can be instrumental in achieving a building’s thermal comfort for the occupants and ensuring energy efficiency. The paper delves into building design that includes kinetic facades, and parametric design for implementing interactive architecture. In so doing, the method of implementation entails the use of automated systems and software applications designed to detect and monitor energy and heat changes to help establish the effectiveness of interactive architecture in providing thermal comfort and energy efficiency in buildings. The methodology of the research study is analytical descriptive for two interactive architecture design buildings in Abu Dhabi that illustrate the effect of interactive architecture on thermal comfort and energy efficiency. It is concluded that, despite interactive architecture posing a challenge in its implementation, it still influences thermal comfort and energy efficiency in office buildings. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Thermal comfort

来源：评论

学校读者我要写书评

暂无评论

A Human-Centred Design Approach for Designing Augmented Reality Enabled Interactive Systems: A Kitchen Machine Case Study

A Human-Centred Design Approach for Designing Augmented Real...

引用

International Joint Conference on Mechanics, Design engineering and Advanced Manufacturing, JCM 2022

作者： Ricci, Marina Scarcelli, Alessandra D’Introno, Annarita Strippoli, Valeria Cariati, Simona Fiorentino, Michele Department of Mechanics Mathematics and Management Polytechnic University of Bari Bari Italy Department of Civil Engineering Sciences and Architecture Polytechnic University of Bari Bari Italy

ISBN: (纸本)9783031159275

In the ever-changing scenario of technology evolution, designers need to develop new interactive systems that respond to users’ needs. Augmented Reality (AR) could be a tool and an opportunity for designers to create novel interactive systems. AR has proven to be effective in several domains, showing potential for widespread deployment even in everyday life tasks such as the use of household appliances. Thus, leveraging the Human-Centred Design (HCD) approach, we integrate AR into the design and development process of an interactive system for household appliances. Based on our survey results with 463 participants, one of the appliances that could benefit most from AR is the kitchen machine. Starting from a case study, we develop a demo to prove the feasibility of designing interactive systems with the integration of AR technologies, following the HCD approach. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Product design

来源：评论

学校读者我要写书评

暂无评论

The Role of Sustainability in Providing a Small Living Space

The Role of Sustainability in Providing a Small Living Space

引用

International Symposium on Networks, Markets and People, NMP 2024

作者： Shawkat, Sabah Pospišil, Matej Hama Radha, Chro Department of Architecture University of Fine Arts and Design Bratislava Slovakia Technical College of Engineering Sulaimani Polytechnic University Sulaymaniyah Iraq

ISBN: (纸本)9783031747151

Micro-homes serve as alternative housing solutions for various purposes, offering a reduced environmental impact in terms of construction materials and energy consumption. These compact dwellings, owing to their small size, often inspire innovative design solutions. The primary objective was to design and manufacture a mobile micro-home that stands out from container-style housing, ensuring sustainability and universality. Focused on accommodating two individuals and addressing their needs in diverse climate conditions, we conceived the distinctive spheroid shape of the micro-home called the Ecocapsule. This design optimally captures rainwater and minimizes energy loss. Overcoming the challenge of integrating HVAC, water, electricity, and energy systems within limited space, the Ecocapsule operates on a dual energy production system, coupled with high-capacity batteries, ensuring energetic self-sufficiency. Its off-grid functionality spans a wide range of climate conditions, from −5 ℃ to + 40 ℃. Water filters guarantee cleanliness from any natural source, while hollow walls filled with highly efficient thermal insulation protect harsh environments, achieving performance levels akin to a passive house. The Ecocapsule empowers individuals to live completely off-grid, offering a harmonious blend of environmental respect and the comfort reminiscent of a hotel room. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Sustainable development

来源：评论

学校读者我要写书评

暂无评论

Seismic Vulnerability Assessment of Masonry Churches in Bondeno: A Comparative Analysis of Damage Indices 5th

Seismic Vulnerability Assessment of Masonry Churches in Bond...

引用

5th International Conference on Protection of Historical Constructions, PROHITECH 2025

作者： Longobardi, Giovanna Milani, Gabriele Formisano, Antonio Department of Structures for Engineering and Architecture University of Naples "Federico II" Piazzale Tecchio 80 Naples80125 Italy Department of Architecture Built Environment and Construction Engineering ABC Polytechnic of Milan Piazza Leonardo da Vinci 32 Milan20133 Italy

ISBN: (纸本)9783031873119

This paper investigates the seismic assessment of twenty-three masonry churches located in Bondeno (district of Ferrara, Italy), following the devastating earthquake in May 2012, which resulted in significant casualties and widespread damage to both industrial and historic structures. Many of these historical buildings, including churches, abbeys, palaces, and bell towers, are vital components of the region’s cultural heritage and urgently needed consolidation to reduce their seismic vulnerability and prevent further losses. The study compares three damage indices derived from distinct approaches to assess the seismic vulnerability of the churches. The first approach uses a simplified mechanical model as outlined in the Italian Guidelines for Cultural Heritage (IGCH). The second method employs the AeDES form, which is utilized for damage estimation in the aftermath of earthquakes. The third approach involves a kinematic analysis of various typical macro-elements identified within the church structures. Data for these assessments were collected using the CARTIS Church form, developed by the PLINIVS research centre in collaboration with the Italian Civil Protection department, to characterize the typological and structural aspects of these ecclesiastical buildings. A comparative analysis of the three indices was conducted, demonstrating the effectiveness of the simplified method in predicting damage to the churches. However, the study notes that further validation is needed to establish the general reliability of this approach. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Religious buildings

来源：评论

学校读者我要写书评

暂无评论

Towards a Low Carbon Future: Evaluating Scenarios for an Energy Community through a Multi-Objective Optimisation Approach 36

Towards a Low Carbon Future: Evaluating Scenarios for an Ene...

引用

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2023

作者： De Souza, Ronelly J. Nadalon, Emanuele Casisi, Melchiorre Reini, Mauro Serra, Luis M. Lozano, Miguel A. Department of Engineering and Architecture University of Trieste Trieste Italy GITSE-I3A Department of Mechanical Engineering Universidad de Zaragoza Zaragoza Spain Polytechnic Department of Engineering and Architecture University of Udine Udine Italy

ISBN: (纸本)9781713874928

Several literature works have highlighted that the expansion of electrification across all sectors is a crucial factor in promoting the transition of energy systems towards carbon neutrality by mid-century. However, polygeneration systems through the appropriate integration of different renewable energy sources are expected to play an important role in such transition by effectively reducing the total primary energy demand, as explored in the present work for an energy community (EC) case study. Therefore, this paper presents the optimal synthesis, design, and operation of an EC system working under three different scenarios and evaluates the trade-offs between the total annual costs and greenhouse gas (GHG) emissions (evaluated as CO2 equivalent emissions). The EC is a District Heating and Cooling Network (DHCN) composed of nine third sector buildings in the northeast of Italy. The DHCN superstructure includes several possible energy supply components for each EC member, a central unit, and heat and/or cooling connections between buildings. Moreover, peer-to-peer electricity sharing is allowed among EC members, through a local electricity grid, before buying/selling electricity from/to the main grid. The superstructure was optimised through a mixed integer linear programming (MILP) model considering a multi-objective optimisation for the total annual cost (for owning, operating, and maintaining the entire system) and the total annual CO2eq emissions as the objective functions. The three scenarios through which the EC system is optimized and evaluated consider the type of consumed gas (natural gas or biomethane) and the electricity consumption configuration (on-grid or off-grid). Results have shown that the cost (per ton of CO2eq) to reduce emissions is too high if the European Union's carbon market is considered. This was especially critic for the natural gas scenario, where the cost per ton of CO2eq (between two optimal solutions) was about four times higher than

关键词： Multiobjective optimization

来源：评论

学校读者我要写书评

暂无评论

Enhancing Seismic Resilience and Energy Efficiency in Historic Masonry Buildings: The MIL15.s Retrofit System 2nd

Enhancing Seismic Resilience and Energy Efficiency in Histor...

引用

2nd GIMC-SIMAI Workshop for Young Scientists, 2024

作者： Longobardi, Giovanna Formisano, Antonio Department of Structures for Engineering and Architecture School of Polytechnic and Basic Sciences University of Naples "Federico II" Piazzale Tecchio 80 Naples80125 Italy

ISBN: (纸本)9783031765902

In Italy, a significant portion of the existing building stock consists of masonry structures that are often in poor condition due to inadequate maintenance over time. Consequently, it is crucial to intervene in order to prevent further loss of life during seismic events, which have already caused substantial damage to these buildings. Additionally, these older masonry structures tend to have thermal inefficiencies, with high energy dispersions from indoor environments caused by various factors. The current research proposes an integrated retrofit system designed to simultaneously enhance both the seismic and energy performance of existing structures. This system comprises metal exoskeletons made of an aluminium alloy, complemented by the insertion of sandwich panels. The investigated solution, known as MIL15.s and developed by the Italian company TM Group S.r.l., was also subjected to experimental tests during my Ph.D. studies at the polytechnic University of Timişoara. Specifically, a preliminary test was conducted on a masonry panel both before and after consolidation using the proposed retrofit technique, demonstrating its effectiveness against out-of-plane mechanisms. Future research will involve a second phase of experimental tests incorporating additional components of the system, as the preliminary phase only evaluated the contribution of the base profiles. Furthermore, numerical simulations of various case studies will be conducted to assess the overall impact of the seismic—energy retrofit on the performance of existing structures. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Retrofitting

来源：评论

学校读者我要写书评

暂无评论

Development of an energy digital twin from a hotel supervision system using building energy modelling

Development of an energy digital twin from a hotel supervisi...

引用

2023 International Conference on the Built Environment in Transition, CISBAT 2023

作者： Libralato, Michele D’Agaro, Paola Cortella, Giovanni Polytechnic Department of Engineering and Architecture University of Udine via delle Scienze 206 Udine33100 Italy

In this work, the utilization of the supervision system of a five-story hotel located in Northern Italy as tool to calibrate and validate a building energy model (BEM) is evaluated. The BEM is created using the TRNSYS simulation environment with the aim to develop a digital twin, to study the energy consumption of the building-HVAC system. The procedure for the supervision system preparation and the data analysis procedure is presented. The digital twin is then used to compare two control strategies for the thermostats’ control during summer to increase the energy efficiency of the building-HVAC system, and to use the heat storage properties of the building envelope to shift and shave the peaks of power demands. Control rules that allow a better match between electrical energy demand and availability, developed, and tested using the BEM, are pursued with the final goal to prepare the inclusion of the hotel in a smart grid. The building is modelled using TRNSYS Type 56 as a multi-zone building, with 96 thermal zones while the building monitoring is performed during the summer season from June to October 2022. © 2023 Institute of Physics Publishing. All rights reserved.

关键词： Hotels

来源：评论

学校读者我要写书评

暂无评论

Novel Aluminium Alloy Exoskeleton for Seismic Upgrading of a Typical Historical Masonry Clustered Building in Southern Italy 18th

Novel Aluminium Alloy Exoskeleton for Seismic Upgrading of a...

引用

18th International Brick and Block Masonry Conference, IB2MaC 2024

作者： Longobardi, Giovanna Di Chicco, Roberta Formisano, Antonio Department of Structures for Engineering and Architecture School of Polytechnic and Basic Sciences University of Naples Federico II Piazzale Tecchio 80 Naples80125 Italy

ISBN: (纸本)9783031733093

Most of unreinforced masonry buildings stand in aggregate configuration, representing a huge percentage of Italian existing construction stocks. These edifices were built in continuity one to each other during the slow expansions occurred in the past centuries. Since they were conceived to resist only gravity loads and due to their actual advanced state of decay, they are very vulnerable to earthquakes. For these reasons, their seismic vulnerability assessment and the consequential retrofitting interventions are a pressing need, which represents a challenging issue in the engineering field both for the lack of detailed information about their constitutive structural units and the complexity of the numerical modelling approaches. In this paper, the seismic appraisement of a typical historical clustered masonry building placed in Southern Italy is discussed. Firstly, a short introduction regarding the historical, geometrical and structural features of the case study is carried out. Once collected these data, static non—linear analyses are performed to obtain capacity curves. Based on the achieved results, an innovative aluminium alloy coating system, consisting of metal exoskeletons integrated with thermo—insulating panels, is proposed for the seismic upgrading of the aggregate. Subsequently, pushover analyses on the strengthened FE model of the clustered building are carried out, highlighting the effectiveness of this innovative retrofitting technique. Finally, the study is concluded by plotting the mechanical—based fragility curves for each structural units, before and after the intervention, so to observe the reduction of the observed damage level produced by the used integrated coating system. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Retrofitting

来源：评论

学校读者我要写书评

暂无评论

Bacterial activity and cementation pattern in biostimulated MICPtreated sand-bentonite mixtures

引用

Journal of Rock Mechanics and Geotechnical engineering 2024年第12期16卷 5121-5134页

作者： Yu Zhang Xiangrui Xu Shiqi Liu Yijie Wang Juan Du Ningjun Jiang Institute of Geotechnical Engineering School of TransportationSoutheast UniversityNanjing211189China Jiangsu Key Laboratory of Low Carbon and Sustainable Geotechnical Engineering Nanjing211189China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomHong KongChina College of Civil Engineering and Architecture Hainan UniversityHaikou570228China

The application of microbially induced carbonate precipitation(MICP)in clayey soils has attracted much attention,and many studies used clay as an additive to enhance microbial mineralization efficiency in sandy *** the sand-clay-bacteria-calcite system,the property and content of clay play crucial roles in affecting bacterial growth and calcite *** important,bentonite is particularly sensitive to changes in the geochemical *** this study,the sand-bentonite mixtures were treated by biostimulated MICP,aiming to provide insights into the behavior of this *** bacterial activity and cementation pattern at different bentonite contents were evaluated through a series of tests such as enrichment tests,unconfined compressive strength(UCS)tests,cementation content measurements,mercury intrusion porosimetry(MIP)tests,scanning electron microscopy(SEM)observations,and energy dispersive X-ray spectroscopy(EDS)*** findings showed that the bentonite presence promoted the enrichment of indigenous ureolytic bacteria,with lower bentonite levels enhancing ureolytic *** and microscopic characterization indicated that the bentonite-coating sand structure was more conducive to the formation of large-sized calcite crystals capable of cementing soil particles compared to sand-supported and bentonite-supported ***,excessive calcium ions(Ca^(2+))concentrations in the cementitious solution would lead to predominant calcite deposition on soil particle surfaces,contributing minimally to strength improvement.

关键词： Microbially induced carbonate precipitation (MICP) Biostimulation Sand-clay mixtures Bacterial activity Cementation pattern

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：