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Performance evaluation of operational energy use in refurbishment, reuse, and conservation of heritage buildings for optimum sustainability

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Frontiers of Architectural Research 2016年第3期5卷 371-382页

作者： O.K. Akande D. Odeleye, A. Coday C.Jimenez Bescos Department of Engineering & the Built Environment Anglia Ruskin University Chelmsford United Kingdom

The operational phase of a building project has increasingly gained importance with their energy performance becoming valuable and determining their operational excellence. In most heritage building projects （HBPs）, the operational energy use aspects are less considered, and a systematic way of analyzing their energy performance following project delivery is often lacking, The aim of this study is to evaluate the operational performance of refurbishment and reuse of UK listed church projects. The objective is to assess the operational energy use with a view to optimizing their sustafnabie performance. The methodology includes eight selected case study buildings refurbished and converted for multipurpose use. The case study approach provided qualitative insights into how the study contributes to a more structured requirements for energy management in HBPs with specific attention to energy-efficient building operations. The findings show the need to focus on fundamental areas of operational management （i.e. by developing and implementing more focused policy on operational energy performance of heritage buildings） to minimize the energy required to operate them. The challenges of implementing changes in operational energy performance improvement of heritage buildings are addressed in the form of recommendations that could Lead to real results. The study concludes that leveraging these areas requires commitment from all heritage building stakeholders because they all have substantial roles in harmonizing the requirement for the project＇s sustainability and not just the building operators. Meanwhile, baseline project planning, periodic updating, monitoring, and managing the energy use pattern are suggested as measures that could greatly facilitate better energy performance to optimizing their sustainable reuse compared with the traditional approach of trying to improve their thermal performance.

关键词： Heritage buildings Listed churches Operational energy Performance refurbishment Sustainabitity

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Architecture as a Means of Developing Social Exchange:Learning from a Danish Case Study of refurbishment and Urban Transformation in a Disadvantaged Housing Area

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Journal of Civil Engineering and Architecture 2023年第6期17卷 265-285页

作者： Claus Bech-Danielsen Marie Stender BUILD Aalborg UniversityCopenhagenDenmark

Disadvantaged housing areas from the postwar period typically consist of relatively monotonous and monofunctional multi-storey blocks and have a separate traffic system rendering the areas isolated enclaves in the urban fabric.It is argued that this spatial isolation contributes to social isolation,and current refurbishments are therefore aimed at linking the housing areas with the surrounding neighbourhoods to enable social exchange between the residents and people from the surrounding areas.Based on a case study in a Danish social housing area,this paper discusses to what extent architectural development and urban strategic transformations can contribute to enabling social exchange in disadvantaged housing areas.Do neighbours enter the disadvantaged housing area as intended?If so,how does this influence their perception of the housing area?The analysis shows that architectural development and urban transformations are interdependent in establishing a social mix in disadvantaged housing areas.It is argued that refurbishments can reduce the stigma surrounding the housing area and its residents.However,the applicability of such strategies is highly dependent on the local context of the housing area.

关键词： Disadvantaged housing areas social housing postwar housing areas transformation refurbishment urban renewal

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Comparative study on microstructure evolution and failure mechanisms of ordinary and refurbished EB-PVD TBC under cyclic oxidation

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Journal of Advanced Ceramics 2023年第9期12卷 1805-1820页

作者： Pan Li Xiaochao Jin Pin Lu Delin Liu Rende Mou Xueling Fan Xi’an Key Laboratory of Extreme Environmental Serviceability and Protection Technologies School of Aerospace EngineeringXi’an Jiaotong UniversityXi’an 710049China AECC Beijing Institute of Aeronautical Materials Beijing 100095China

refurbishment of thermal barrier coating(TBC)has become a valuable technique to prolong the service life of high-temperature components.This study investigates the effect of the refurbishment process(coating removal and recoating)on the microstructure evolution and physical properties of TBC,including oxidation characteristics,element diffusion behavior,and crack failure mechanisms.The results showed that a certain amount of interdiffusion zone(IDZ)with Cr-rich would be retained in DD6 superalloy substrate after coating removal.The microstructure of the refurbished specimens showed equiaxedβ-NiAl phases,while the ordinary specimens have elongated grain shapes with a high aspect ratio.Moreover,mixed oxides in the refurbished TBC specimens were earlier observed during cyclic oxidation,with a greater thickness compared to ordinary TBC,due to the influence of BC layer phase sizes.The growth mechanism of thermally grown oxide(TGO-Al_(2)O_(3)layer)in the refurbished TBC specimens was also different,resulting from the different mechanisms of mixed oxides growth.Furthermore,under cyclic oxidation with water quenching at 1100℃,the cracks in the refurbished specimen tend to occur in the mixed oxides layer,while the cracks in the ordinary specimen occur in the top coat(TC)layer,attributing to the earlier and thicker mixed oxides layer formed in refurbished specimens.

关键词： thermal barrier coating(TBC)systems coating removal refurbishment cyclic oxidation microstructure evolution failure mechanism

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A Study on the Impact of Urban River refurbishment to the Thermal Environment of Surrounding Residential Area

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Journal of Environmental Protection 2014年第5期5卷 454-465页

作者： Daewuk Kim Jae-Gyu Cha Eung-Ho Jung Department of Environmental Planning Keimyung University Daegu South Korea

In this study, a simulation was conducted targeting Beomeo stream of Daegu, for the purpose of the quantitative determination of the changes in thermal environment of surrounding residential areas according to the urban river refurbishment. For the study method, the reviews of literature and model verification were conducted, and then the results were derived through the process of comparing and analyzing the thermal environment resulting from the river refurbishment of the target area. As a result of the model verification, the accuracy of modeling was 95%. As a result of a simulation of the target area, in respect of the fluctuation of temperature, the temperature decreased by 1.33°C more in the daytime than in the night time, due to the river refurbishment. In respect of the positions, the decrease of the temperature was 1.33°C at 2 pm at position 1, the position of river refurbishment, and the highest in the entire time slots. Also, the changes in temperature increasingly decreased from position 1 to position 4. It seemed that it was because there was the highest radiant heat at position 1 with the biggest gap between artificial mulching and natural mulching, and the effect of the gap in the radiant heat influenced successively over position 2, 3 and 4. Lastly, in respect of the effect of river refurbishment on the surrounding area, the effect reached to position 3, in other word, 60 meters from the river.

关键词： Residential Area Urban Heat Island Urban Micro Climate River refurbishment Thermal Environment

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Energy Saving Potential Due to refurbishment of Federal Public Housing in the UAE

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Engineering（科研） 2013年第1期5卷 132-136页

作者： Wafa AlAwadhi Athari AlNaqbi Abeer Manneh Ayoub Kazim Bassam Abu-Hijleh Dubai International Academic City Education Cluster TECOM Investments Dubai-UAE Faculty of Engineering & IT The British University in Dubai Dubai-UAE

This paper, computer energy modeling is used to estimate the potential energy savings of refurbishing existing public federal housing in the United Arab Emirates. Such houses are built by the UAE Ministry of Public Works (MoPW) in five of the seven emirates that make up the UAE federation. The energy modeling was performed using the Integrated Environmental Solutions-Virtual Environment (IES-VE) commercial software. The study covered representative MoPW houses built in the period of 1974-2012. The results indicate potential energy savings upto 30.8% for the case of model 717 when refurbished to 2 Pearls standards compared to the as built configuration. The results showed little benefit in going from 1 Pearl to 2 Pearls refurbishment level. Thus 1 Pearl seems to be the most practical. This shows the high potential for energy, and thus environmental, savings should refurbishment be carried out on the homes built by the MoPW.

关键词： energy modeling energy savings refurbishment UAE

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Recovery and reuse of abandoned buildings for student housing:A case study in Catania,Italy

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Frontiers of Architectural Research 2018年第4期7卷 510-520页

作者： Stefano Cascone Gaetano Sciuto Department of Civil Engineering and Architecture University of CataniaCataniaItaly

Over the past 15 years, housing supply for university students has increased significantly given the considerable attention provided by national institutions on the issue of student housing. In Italy, however, only approximately 4% of students live in university residences. Since 2001, interventions on existing buildings have accounted for approximately 60% of the overall measures proposed for new university residences; these interventions comprise most of the available public economic resources. The possibility of recovering and reusing existing buildings for university residences is remarkable for the city of Catania because most of the students are enrolled in university courses located within the historic city center. Moreover, abandoned buildings are currently a significant part of the city׳s architectural heritage. This research aims to develop an articulated and integrated set of frameworks to support the various phases of the design process for recovering and then reusing existing buildings as university residences. The proposed approach applies existing dimensional standards and environmental sustainability principles to a constructed building using traditional techniques.

关键词： University residences Historic center Recovery Reuse refurbishment Retrofit

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Heritage attributes of post-war housing in Amsterdam

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Frontiers of Architectural Research 2020年第1期9卷 1-19页

作者： Lisanne Havinga Bernard Colenbrander Henk Schellen Department of the Built Environment Eindhoven University of TechnologyEindhoventhe Netherlands

Modern heritage,particularly post-war social housing estates,is struggling with negative perceptions.Accordingly,this research aims to contribute to a better understanding of the heritage significance of post-war housing estates in general and the Western Garden Cities-a post-war neighborhood in Amsterdam-in particular.A review of the limited body of literature on the heritage significance of modern and post-war housing estates was performed.A significance assessment was conducted on a sample of representative case studies by using expert interviews for data collection.The experts assigned significance levels to attributes based on whether or not they need to be preserved during a sustainable refurbishment.The highest-valued attributes are parcellation,balconies,and semi-public green spaces.The most negative value was assigned to the application of external insulation,replacement of the window frames by PVC-U,and closed character of the fa(c)ades on the ground floor level.The lack of heritage recognition at the lower scale level may either be due to the important details already being lost or details not yet consistently being recognized as the architecture and buildings are understudied in comparison with the urban qualities of post-war heritage.

关键词： Heritage Significance Attributes Management of change Sustainable refurbishment Heritage impact

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SPS-strengthening of Orthotropic Structures by Steel-elastomer Sandwich Bond

SPS-strengthening of Orthotropic Structures by Steel-elastom...

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第三届世界粘接及相关现象大会暨北京粘接学会第十五届学术...

作者： Markus Feldmann Gerhard Sedlacek Achim Geβler RWTH Aachen University Prof.Markus FeldmannLehrstuhl fuer Stahlbau und LeichtmetallbauMies-van-der-Rohe-Str.1D-52074 AachenGermany

The so-called orthotropic bridge decks consisting of a deckplate with longitudinal stiffeners and transverse cross beams have been developed since their first application in 1950,concluding in the new EN 1993.SPSCSandwich Plate System)-technique fulfils all necessary requirements for a satisfactory refurbishment of those bridges,that do not comply with the state-of-the-art design.With SPS sandwich-action is generated through the bond between a solid polyurethane core and two steel plates;it has been initially developed by Intelligent Engineering Holdings Limited,UK together with Elastogran GmbH,Germany as a technique for the refurbishment of steel decks of ferry ships.For its recent adoption as a refurbishment procedure for steel decks of bridges both experimental and calculative investigations were carried out to demonstrate the reinforcing and stiffening effect,and to prove the compliance of SPS-Overlay technique for general use, namely under severe temperature exposure during hot asphalt paving.The practical applicability of SPS has been tested successfully in pilot projects for bridges under traffic.

关键词： steel bridge orthotropic deck sandwich steel-elastomer sandwich bond characteristics maintenance refurbishment

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