Renovation Of Buildings Research Articles

Energy Efficiency Analysis of Building Envelope Renovation and Photovoltaic System in a High-Rise Hotel Building in Indonesia

The development of high-rise buildings worldwide has given rise to significant concerns regarding their excessive electricity consumption. Among the various categories of high-rise structures, hotels used for business and conferences stand out as particularly extravagant in their energy use. The consequence arising from excessive energy usage is an escalation in carbon emissions, which is a primary driver of global warming. Therefore, this study aims to investigate the energy use intensity (EUI) of a hotel building located in Jakarta, Indonesia. In order to improve energy performance, this study explored various options for renovating the building envelope, such as incorporating insulation and a roof covering, as well as implementing building-integrated photovoltaics (BIPV). The building envelope renovations demonstrated a notable reduction in energy use by 15.8–27.7% per year. BIPV, such as curtain walls and double-skin façades, generated an energy use reduction of 4.8–8.6% per year. Remarkably, by combining the two approaches (i.e., adding insulation and a roof covering in the building envelope and adopting BIPV as double-skin façades), the potential reduction in energy use reached up to 32.2% per year. The findings can assist decision-makers in developing building renovation strategies for high-rise buildings while considering energy conservation.

European energy renovation of multi-dwelling building from a Swedish life cycle perspective

European energy renovation of multi-dwelling building from a Swedish life cycle perspective

The effectiveness of BIM features application strategies for building refurbishment project performance improvement

Abstract This research presents a study that explores the effectiveness of different strategies for implementing Building Information Modelling (BIM) features in enhancing the performance of building refurbishment projects. The study adopts a combined quantitative and qualitative approach to measure the significance of BIM features in relation to building refurbishment project performance improvement. It aims to uncover the correlation between BIM feature application strategies and building refurbishment project performance and provides recommendations on utilizing BIM features to improve project outcomes. The study encompasses a comprehensive review of existing literature on BIM and building refurbishment projects, followed by a mixed-methods approach. This approach involves quantitative analysis of data from refurbishment projects that have implemented BIM, as well as qualitative analysis of expert interviews with industry professionals. The findings of the expert interviews shed light on the factors influencing the effectiveness of BIM in building refurbishment projects, such as the level of BIM adoption, the availability of skilled personnel, and the integration of BIM into project workflows. The research contributes valuable insights to enhance the understanding of BIM utilization in building refurbishment projects, offering guidance to practitioners and decision-makers in leveraging BIM technologies for such endeavourrs.

RECONSTRUCTION OF BUILDINGS AS A METHOD OF PRESERVING HISTORICAL BUILDINGS

Reconstruction of buildings is an important method of preserving historic buildings, as it allows to combine the preservation of architectural and historical values with the needs of modern life. The preservation of historical and cultural heritage is a key strategic direction for the development of modern cities and a way of self-identification of peoples. Historic buildings, regardless of their functional, constructive and aesthetic qualities, allow us to pass on to future generations the material evidence of the past, the spirit of the era, and the unique atmosphere of cities. Modern urban planning policy, despite its offensive nature, provides for the maximum preservation of historic buildings and structures, their reconstruction, modernisation or renovation. The only way to avoid oblivion and destruction is to make full use of them. In today's world, countries' desire for cultural self-identification and interest in authentic architectural surroundings contributes to the preservation of not only unique buildings and structures listed in the registers of architectural and historical monuments, but also high-quality "background architecture" - second-plan architecture, inconspicuous, less valuable, but which is essential for the formation of the "image of the city". It is this type of building that most often becomes the object of active reconstruction. The purpose of the article is to explore the significance of the impact of historical buildings on the formation of the urban environment, to study the experience of reconstruction of historical buildings, and to show the possibilities of reconstruction as a method of preserving cultural heritage. For this purpose, the article analyses the practical principles of foreign experience in reconstruction, renovation, adaptation and modernisation of buildings and structures for various purposes - residential, public, industrial, and engineering. The article provides examples of completed projects for the reconstruction of residential (East Germany, Amsterdam, Bordeaux, Norfolk, Copenhagen, Paris), public (Berlin, Brisbane, London, Hanover, Hong Kong, Nuremberg, Venice) and industrial buildings (Barcelona, Riga, MontjuХre, Leshno, Villars de Dalt, Kyiv, Brooklyn, Roskilde, Brussels, Eindhoven, Lviv) and engineering structures (Bankside, Toronto, Dorset, Utrecht, London) that show a variety of architectural and planning techniques of reconstruction. The study of foreign and domestic experience in the reconstruction of buildings and structures expands the possibilities for the effective use of historic buildings, improves the methods of volumetric and spatial organisation of development, and prolongs the life of historic buildings.

Geospatial Analysis of Energy Poverty and Accessibility to District Heating Systems

This research paper undertakes a comprehensive geospatial analysis to investigate the relationship between energy poverty and district heating accessibility in Estonia. Utilizing ArcGIS Pro and statistical software, the study maps district heating systems, evaluates the energy efficiency of apartment buildings, and examines socioeconomic factors influencing energy poverty. By integrating GIS data with socioeconomic and building energy performance indicators, the research identifies areas where district heating is either absent or inefficient and correlates these findings with instances of energy poverty. Preliminary data may indicate a significant correlation between the lack of accessible district heating and increased energy expenses among lower-income households. The study also evaluates the impact of building energy efficiency on heating needs, revealing that older, less efficient buildings contribute disproportionately to energy poverty. Recommendations include policy interventions to expand and optimize district heating networks, alongside building renovation programs to enhance energy efficiency. This research contributes to the broader understanding of sustainable urban heating solutions and their role in mitigating energy poverty.

Main Principles and Solutions for Acceleration of Energy Efficient Renovation in Latvia

The European Renovation Wave aims to at least double the annual energy renovation rate by 2030, especially promoting deep renovation. In order to achieve this goal, EU member states need to overcome the existing obstacles in the whole chain of the building renovation process by using certain policy measures and finance instruments. According to the Ministry of Economics of Latvia, the current necessity is to renovate around 26 thousand multi-apartment buildings. Therefore, not only the problem of the lack of additional financing should be solved but also the pace of implementation should be significantly increased. This study starts with an overview of the main obstacles of the building renovation in Latvia and gives an insight into the main challenges in the achievement of the goal. The study includes the review of existing support programmes and financing schemes, designed to improve the energy efficiency of multi-apartment buildings in Latvia. Moreover, the study analyses the existing support mechanisms in Latvia, and reviews different policy measures for regulatory requirements, fiscal and economic incentives and information campaigns in Europe. In addition, the study proposes an assessment of the availability of financial support for the low-income households, and analyses energy poverty solving tools. As a result, the study defines basic principles and examines the solutions for energy efficient renovation in Latvia – including tax incentives, regulatory framework, development of financial schemes and models for acceleration of building renovation. The solutions have been evaluated considering country specific economic, technical, and social aspects, and defined as a set of recommendations for decision makers.

Towards feasible and credible building modelling reflecting the operational energy use and indoor environment – Nordic climate case study

Credible building modelling is essential to the building energy certification and building renovation towards better energy performance and indoor climate. The primary objective of this work is to assess the consequences related to the level of effort necessary to simulate the building geometry and its facilities and to guide practitioners in building modelling by providing insights about the model simplification consequences both for the energy performance and comfort. This work focuses on the sensitivity of model geometry simplification and heating system and the influence of these on the energy and thermal comfort KPIs in standard simulation conditions. Moreover, the study presents models verification towards operational performance, investigates the complexity of adapted simulation conditions, e.g., heating setpoint, actual people load on the model credibility comparing to monitored data. The sensitivity study main conclusion is that there are relatively small differences in heating demand among models with different zoning methods of geometries, while the implementation of detailed heating systems in the simulation has a more noticeable effect on the results of all output KPIs. The Model verification activity main conclusion is that adapted people’s load can improve the model accuracy. Models with detailed geometry, lead to more accurate results when the heating set-point in the model is defined as monitored data per apartment. For dwellings with a limited number of IAQ measured points, use of the standard set-point is advised instead of monitored. For the apartments with sufficient IAQ sensors, adapted heating setpoint and people load can significantly improve the model predictions.

Waste Management of Construction and Demolition Materials Towards Sustainable Growth of Nagpur City

The higher amount of buildings and infrastructures in India, number of construction and demolition (C&D) waste is increasing continuously. These wastes, if not completely recycled, will create the environmental problems. This research paper concentrates on the use of a system dynamics technique to develop a C&D waste recycling. The project is based on the recycling of the rapidly increasing construction and demolition waste. Through this process we want to take a step ahead, the idea of stopping illegal Dumping and ultimately save our mother Earth from destruction. The cost of recycled C&D solid waste resulting in reduction of overall construction cost. The demolition is the most commonly pronounced word in the construction industry. As per the new building rules building should be demolished after its service period. Now-a-days the importance is given to sustainable and environmental friendly construction; there should be effective control of the demolition waste. The demolition waste can be reused for the construction. Construction and demolition (C and D) waste is defined as the solid waste generated by the construction, renovation, repair, alteration or demolition of residential, commercial, government or institutional buildings, industrial, commercial facilities and infrastructures such as roads, bridges, dams, tunnels, railways and airports. Construction and demolition waste is considered as high volume, low risk. It is commonly understood that this waste can be considered a resource, either for reuse in its original form or for recycling or energy recovery. Because of increasing waste production and public concerns about the environment, it is desirable to recycle materials from building demolition. If suitably selected ground cleaned appropriate industrial crushing in plants, these materials can be profitably used in concrete. Despite this, most Construction and Demolition waste ends up in landfills recycled aggregate and recycled sand that can be obtained. Further with the help of the obtained recycled material we intend to make various products such as concrete, paver blocks, hollow blocks, etc which will in turn be less costly as well. These recycled materials and products made from it are economical without any considerable change in the strength and durability aspect. Not only the cost effectiveness but it will also be aesthetically pleasing. According to Metropolitan region development authority the amount of construction and demolition waste (C&D waste) must be reduced by at least 70%. 3Rs model (Reduce, Reuse and Recycle) in the C&D waste management with costs savings. This paper finds a broader understanding of the socioeconomic implications of waste management over time and the positive effects of these policies in the recycled to achieve the goal of C&D waste as well as the composition of Construction and Demolition waste, the need for its recycling and options that can be implemented for its efficient use in the field of concrete technology. Key Words: C & D waste; sustainable construction systems, Recycling, Concrete.

Renovation Wave in Europe: Low-Carbon Design for the Refurbishment of Social Housing in Southern Italy

The public housing stock, called social housing, in Italy was developed between the 1950s and the 1980s. As of today, the first residential developments are almost nearing their end-of-life age and are in need of urgent and intensive renovation. The European Commission, with the Renovation Wave, has set a goal of doubling the rate of building renovation over the next 10 years, reducing emissions, improving energy performance, and promoting decarburization. Renovation interventions, including structural, functional, energy, and plant upgrading interventions, etc., are to be preferred over integral demolition and reconstruction interventions, which have significant repercussions in terms of managerial and social discomfort. The case studies examined concern renovation interventions aimed at energy efficiency, functional adaptation of housing, as well as façade restyling. The design variants analyzed were evaluated in terms of CO2e emissions, according to life cycle inventory (LCI) and Environmental Product Declaration (EPD) approaches. This approach has a twofold purpose: to propose design guidelines, with low CO2e emissions, through hypotheses of variants in the case studies, and to propose, to the economic operators, economically advantageous bidding scenarios in the procurement process.

Mitigation of Inpatient Standard Class Risk at Hospital X

Background: The Standard Inpatient Class Policy (KRIS) in Indonesia aims to provide equitable healthcare services, ensuring the same standards in inpatient wards across all hospitals in Indonesia. This policy has been issued since 2021 and is mandatory for all hospitals to implement by December 2024. The implementation of the KRIS policy impacts hospitals, necessitating analysis and mitigation of risks arising from its implementation. This study aims to provide an overview of the analysis and mitigation of risks in the standard inpatient class implemented by Hospital X. Method: Qualitative research using Focus Group Discussions (FGDs) in November 2023 involving 7 key informants, including Hospital Directors and Department Heads, regarding the mitigation of risks in the standard inpatient class using risk analysis matrices. Results: There are two criteria for the standard inpatient class that pose a very high level of risk, namely the building components lacking high porosity and the density of ward spaces and bed spacing. Conclusion: Hospital X implements risk mitigation by taking actions to reduce the impact of risks through room improvement based on related room reports, risk reduction mitigation by planning inpatient building renovations, and risk acceptance mitigation by allowing ward areas to be 9.8 square meters per bed.

Quantitative Analysis of Comprehensive Similarity in Restoration of Ancient Building Walls Using Hue–Saturation–Value Color Space and Circular Local Binary Pattern

Evaluating the effects of wall restoration on ancient buildings has been a difficult task, and it is important that the overall appearance of the restored walls of ancient buildings is similar, harmonious, and uniform. This paper used a hue–saturation–value (HSV) color space and Circular Local Binary Pattern (CLBP) to analyze the comprehensive similarity between a restored wall and the original walls in Qi Li Ancient Town. The results show that the values of the comprehensive similarity calculation of ancient buildings based on the color and texture were consistent with the actual situation. The method is suitable for evaluating the degree of matching between wall repair materials and the appearance of the original wall materials of ancient buildings, and it can also be used to assess the comprehensive similarity between the repair materials and the original building walls before carrying out the wall repair in order to select more suitable materials for wall repair and achieve the best repair effect. And it is flexible and objective compared to human judgement. Through the accurate restoration of ancient buildings, not only can we protect cultural heritage and continue the historical lineage, we can also enhance the aesthetic value of buildings and meet people’s needs for historical and cultural tracing.

Heat exposure mitigation in renovated nearly zero-energy dwellings during concurrent heat waves and power outages

As heat waves increase in intensity and duration, the risk of heat exposure in dwellings in countries with mixed humid climates is expected to rise. The impact of heat waves on building performance has been extensively researched. However, building performance during concurrent heat waves and power outages needs further investigation to reduce the dependency on active cooling during critical infrastructure failures. This paper presents a simulation-based study of heat exposure risks for a nearly zero dwelling during a concurrent heat wave and power outage in Brussels, Belgium using weather data from field measurements. Combinations of promising passive design strategies like natural ventilation, cool roof, and solar shading were evaluated along key performance indicators like indoor overheating degree, standard effective temperature, exceedance hours, and heat index. The building performance results showed that existing building-level passive cooling renovation strategies like natural ventilation alone would not be sufficient to mitigate heat exposure with an indoor overheating degree of 0.59 °C. Therefore, they will require additional passive measures like solar shading using window louvres to mitigate heat exposure risks and lower indoor overheating to 0.19 °C. The findings provide unique insights that inform building renovation practices, setting the stage for future research on the topic.

Research on the Digital Preservation of Architectural Heritage Based on Virtual Reality Technology

As a representative of the scientific and technological achievements of the new era, the overall development of virtual reality (VR) technology is becoming increasingly refined, which provides new development ideas and technical support in the field of ancient building restoration and architectural heritage preservation. In this context, digital conservation and the practice of architectural heritage have become important focuses of application in the industry. This paper starts from the core concept of VR technology, analyzes the value of the application of VR technology in the protection of ancient architecture, puts forward relevant suggestions and technical application methods, and takes Red Pagoda in Fuliang County as an example. In this sense, virtual reality technology is used to restore and protect the buildings, forming a digital heritage of ancient architecture. This study first utilizes a three-dimensional laser scanning instrument to collect point cloud data, and then the plane graph is drawn by measurement. Then, an Architectural Heritage Building Information Model is created, and comprehensive information on historical buildings is integrated. Finally, VR technology is used to show the effect of digital display and preservation. This study transforms architectural cultural heritage into a shareable and renewable digital form through restoration and reproduction, interpreting and utilizing it from a new perspective and providing new ideas and methods for architectural heritage conservation.

Semi-stationary and dynamic simulation models: A critical comparison of the energy and economic savings for the energy refurbishment of buildings

Dynamic simulation is a powerful tool for accurately evaluating the thermal demands of buildings and assessing the impact of energy refurbishment actions on their final consumption. Conversely, semi-stationary models are widely adopted in commercial applications for its simplified approach, which reduce calculation times, resulting in standardized results showing a certain deviation with respect to the real energy This paper presents the energy and economic comparison between the dynamic simulation and semi-stationary approaches for the calculation of primary energy demand of residential buildings. The semi-stationary method, used by the legislation to calculate the buildings energy label, is based on an energy performance parameter, not representative of the real energy demand. Conversely, an approach based on dynamic simulation provides a more reliable estimation of the primary energy demand. The main novelty of this paper is to numerically prove that the energy and economic savings calculated by means of software based on the current legislation may be overestimated. In this work, the dynamic simulation of the building-plant system is performed by TRaNsient SYstem Simulation (TRNSYS) program. Each building apartment is divided in thermal zones, where the internal heat gains are defined in detail. The semi-stationary simulation of the building-plant system is performed according to the Italian standard UNI TS 11300. The models allow one to evaluate the yearly primary energy demand, along with the energy bill and CO2 emissions. A specific case study is developed for a residential building located in Naples (Italy). The models are used to calculate the building energy demand for several scenarios, considering different thermal transmittances of the building elements. The results show that the semi-stationary method overestimates of primary energy saving, equal to 64.7 %, with respect to the one calculated with the dynamic approach, equal to 43.2 %.

Evaluation of cooling energy saving and ventilation renovations in office buildings by combining bioclimatic design strategies with CFD-BEM coupled simulation

Bioclimatic design knowledge and measures, including passive techniques and natural ventilation cooling, are urgently for building renovation to mitigate global warming. The performance of indoor airflow, energy, economic, and environmental aspects has been researched separately. However, developing a comprehensive framework to investigate bioclimatic strategies under the impact of climate change is challenging. This study aims to integrate bioclimatic design strategies with a coupled simulation approach using Fluent and EnergyPlus to evaluate retrofitting techniques for a single-room office in a university building in a hot summer and cold winter climate. A bioclimatic analysis was conducted to recommend cost-effective passive cooling strategies, including natural ventilation and window shading systems. Two passive measures, changing window types and furniture layouts, were included in renovation packages. Results indicated that the empty model is not valid compared to the fully furnished model when calculating room air change per hour (ACH). Natural ventilation was the most cost-effective strategy to mitigate climate change, with a net present value (NPV) ranging from USD 135.09 to 402.81 over 30 years. However, a higher ACH did not ensure a longer natural ventilation period. By changing the top-hung window to a vertical sash and implementing a movable furniture layout, can achieve better ventilation efficiency. The installation of window vertical shadings had the highest annual emission savings by 2080, while it performed negative economic viability in both the present and the 2050 climates. This research demonstrated how combining bioclimatic measures with a co-simulation approach can offer a thorough evaluation of building energy retrofitting. The results could support architectural and engineering design by integrating bioclimate measures to identify the most effective strategies.

RENOVATION OF A TOWER-TYPE INDUSTRIAL BUILDING AS AN EXAMPLE OF THE WATER TOWER OF THE UKRAINIAN STATE UNIVERSITY OF SCIENCE AND TECHNOLOGIES

Purpose. Research and analysis of the main approaches to the renovation of tower-type industrial buildings, establishing a connection between the geometric space and the functional-spatial zoning of the premises created on their basis. Methodology. The study is devoted to one of the groups of neglected engineering structures, such as water towers. Such industrial facilities are already embedded in the infrastructure of the city, as a rule, they are embedded in dense urban development, which adds leverage for the preservation and renovation of such facilities. During the reconstruction of tower-type industrial buildings, there are problems of dismantling, removal and disposal of a large volume of structures and building materials. Study of national and international experience in renovation of tower-type industrial buildings. According to the requirements of DBN V.2.2-15:2019 "Buildings and structures. Residential buildings. Basic provisions" to the areas of the premises in a residential building, their placement in the space of the tower is analyzed in the process of designing the floors of the tower. Findings. The possibility of renovating the tower-type industrial structure of the water tower of the Ukrainian State University of Science and Technology into a residential building was considered. The architectural design of a 3-story residential building with the arrangement of separate entrances to the building with the help of an elevator and stairs and the distribution of spaces by floor according to functional purpose was completed. Originality. For the first time, the concept of a volume-planning solution for apartments in the limited space of a water tower was developed. This example gives impetus to the development of the reconstruction of tower-type buildings, their preservation as a historical and cultural heritage of Ukraine. Practical value. Water towers that are no longer used for their primary purpose can be reconstructed and can replenish the housing stock, acquire the significance of cultural and public centers in cities and settlements.

A discussion on the application of green building materials in the renovation of buildings

With the continuous improvement of peoples living standards, enhancing living conditions has gradually become a consensus for many. In addition to choosing new construction, the renovation of some old buildings has also gradually become a topic of discussion. In the process of building renovation, the selection of building materials has become a general concern. Green building materials are gradually entering the public eye, and green buildings have become a widely favored type of construction. The use of green building materials has become a trend. This paper, through introducing the concept, necessity, and characteristic advantages of green building materials, takes the example of the renovation design of an expert reception center to explore the feasibility of using green building materials in six aspects: building doors and windows, energy-saving glass, building walls, building insulation materials, decorative materials, and wood structure materials.

Architectural and artistic solutions of the OTC during the gentrification of soviet cinemas

In the professional environment of architects, there is concern about the formation of a trend of reconstruction and renovation of buildings and structures in large and major cities in order to develop urban infrastructure. The underestimation of the contribution of Soviet architecture to the cultural heritage of post-Soviet countries and countries of the socialist camp is noted. At the same time, the "new architecture" forms the urban environment under the stereotypes of homologation, which does not correspond to the socio-cultural demand of the glocalization of "digital nomads" seeking to live in eco-digital cities. The obsolescence of the "new architecture" is observed already at the project stage or in five years. In Moscow, the reconstruction program includes 39 Soviet cinemas in the peripheral zone of the city. Public and shopping complexes with underground levels are being built on the site of these cinemas. The article classifies the types of projects of Soviet cinemas and shopping centers, and also forms diagrams for their qualitative comparison. This eventually made it possible to evaluate the architectural and artistic contribution to the Moscow development of both Soviet cinemas and new shopping complexes, the continuity between them and differences in design principles.

Building renovation Roadmapping: an automated methodology framework for energy efficiency improvement and sustainable renovation planning

ABSTRACT A significant portion of energy consumption currently derives from the building stock, which has harms both the environment and the living standard of occupants, while at the European level, the renovation rate of the current building stock remains low. This study presents a methodology for automated retrofitting scenarios in buildings that enhances user awareness through meaningful visualisations and fosters collaboration of renovation professionals with interoperable software solutions. Commercial design software (Autodesk Revit, Graphisoft ArchiCad) generates the Building Information Model (BIM) in the Industry Foundation Class (IFC) format. IFCs are processed by a parsing tool, which translates IFC files into a comprehensible data model. The proposed framework initially examines the asset-based elements and calculates as-designed energy consumption by extracting information from the produced data model. Based on conducted calculations, the proposed schema identifies mandatory renovation actions and generates scenarios for a variety of examined categories. The final output consists of a renovation roadmap that prioritises changes with the greatest impact based on the demand of the building’s stakeholders. The proposed methodology provides a promising approach to help building owners and stakeholders with the identification and prioritisation of energy-saving retrofitting actions, thus contributing to the achievement of energy efficiency goals.

Contested Commensuration: The case of a valuation instrument for historical buildings

Environmental values are becoming increasingly important in restoration of historical buildings, while energy interventions can seriously damage historical qualities. Cultural-historical values and environmental values are often considered difficult to commensurate, with energy engineers and heritage experts adhering to widely differing values and relating to different discourses. Valuation instruments are devised to deal with such value conflicts in restoration projects. In this article we study what such instruments perform in the case of assessing historical buildings. We ask how these instruments work, and how they afford, support and guide valuation processes? Furthermore, we enquire what is achieved and what is lost in the reconciliation of values. Theoretically, we start from the notion of commensuration, which allows comparison of values through a shared metric. Empirically, this research note examines the history and use of DuMo, an instrument that aims to reconcile cultural – historical and environmental values and provides a range of sustainable restoration strategies. We find that DuMo indeed performs commensuration of these conflicting values, but also keeps intact the epistemic authority of the two professions. Our claim thus is that valuation instruments can successfully perform commensuration while at the same being contested by involved professionals.