Bioclimatic Research Articles

Multifunctional shape-memory smart window based on femtosecond-laser-printed photothermal microwalls

Abstract Smart windows (SWs) garner significant potential in green buildings owing to their capability of on-demand tuning the solar gains. Apart from solar regulation, people always desire a type of slippery SW which can repel the surface hydrous contaminants for anti-fouling application. Unfortunately, the up-to-date slippery SWs that respond to electrical/thermal stimuli have drawbacks of inferior durability and high energy-consumption, which greatly constrain their practical usability. This article presents our current work on an ultra-robust and energy-efficient near-infrared-responsive smart window (NIR-SW) which can regulate the optical transmittance and droplet’s adhesion in synergy. Significantly, laser-printing strategy enables us to seed the shape-memory photothermal microwalls on a transparent substrate, which can promote daylighting while maintaining privacy by near-infrared (NIR) switching between being transparent and opaque. As a light manipulator, it turns transparent with NIR-activated erect microwalls like an open louver; however, it turns opaque with the pressure-fixed bent microwalls akin to a closed louver. Simultaneously, the droplets can easily slip on the surface of erect microwalls similar to a classical lotus effect; by contrast, the droplets will tightly pin on the surface of bent microwalls analogous to the prevalent rose effect. Owing to shape-memory effect, this optical/wettability regulation is thus reversible and reconfigurable in response to thealternate NIR/pressure trigger. Moreover, NIR-SW unfolds a superior longevity despite suffering from the raindrop’s impacting more than 10 000 cycles. Remarkably, such a new-type SW is competent for thermal management, anti-icing system, peep-proof screen, and programmable optics. This work renders impetus for the researchers striving for self-cleaning intelligent windows, energy-efficient greenhouse, and so forth.

CO2 Emission in Green Buildings: An Analysis of Energy Efficiency and Financial Viability in Jordan

CO2 Emission in Green Buildings: An Analysis of Energy Efficiency and Financial Viability in Jordan

Bioclimatic criteria in the AMOF building to reduce the emission of Carbon Dioxide (CO₂) - Lima - Peru 2021

This research aims to analyze the influence of the application of bioclimatic criteria in buildings to obtain integral well-being, energy efficiency and reduction of carbon dioxide (CO₂) to the environment. The growing trend for the use of sun-exposed glass in buildings, which causes the greenhouse effect, increases the interior temperature of the building and causes glare, promoting artificial cooling by inefficiently using energy; heating a room naturally and then cooling it artificially is a bad practice and stimulates the closing of the curtains, which causes the lighting of luminaires; with which the building emits carbon dioxide (CO₂) to the environment, contributing to global warming. It has been developed, with a methodological approach based on the principles of bioclimatic architecture, the analysis of the variables that allow to study this influence, in the office buildings in Miraflores (Lima, Peru), considering the AMOF building under adverse thermal and light conditions. With the results obtained, it is verified that the solution with solar geometry proposed for the AMOF building solves problems of thermal wellbeing, lighting and decreases the emission of carbon dioxide (CO₂) by 74.07 %. Therefore, it is concluded, that these considerations that were not regarded, influence the conditions of habitability and well-being of users, making the window the weakest point of the building to achieve human well-being, energy efficiency and reduction of pollution to the environment.

Barriers to the Effective Selection of Sustainable Materials for Residential Building Projects: A Qualitative Study

Although sustainability in Tanzania’s construction sector has been explored in areas such as energy efficiency and green building practices, little attention has been given to understanding the specific barriers to the selection of SBMs in residential projects. This study fills that gap by identifying and analyzing the critical barriers hindering the effective selection of SBMs in Tanzania’s residential construction sector. Through qualitative interviews with experts from regulatory bodies, public developers, and academic researchers, this research provides a comprehensive examination of these barriers. Using Atlas.ti 23 software for a qualitative data analysis, six key categories of barriers were identified: (1) Regulatory and Policy Barriers, (2) Financial Barriers, (3) Knowledge and Awareness Barriers, (4) Technical Barriers, (5) Market and Supply Chain Issues, and (6) Cultural and Social Barriers. Among these, lack of awareness and limited knowledge emerged as particularly significant, alongside regulatory and policy barriers, in hindering the effective selection of SBMs. This study’s novelty lies in its focus on the Tanzanian context, depth of the analysis of the unique challenges, and categorization of the barriers. The findings underscore the need for targeted policy interventions, particularly in raising awareness, offering financial incentives, and establishing comprehensive regulatory frameworks. Furthermore, this study presents a graphical representation to illustrate the categories and constructs of these barriers, adding a visual dimension to the understanding of the issues. Future research should expand the scope to include private developers and material suppliers, whose roles are critical in enhancing the availability and adoption of SBMs in Tanzania’s construction industry.

Practice Exploration of Green Building Design in Prefabricated Residential Building Design

Practice Exploration of Green Building Design in Prefabricated Residential Building Design

Development of International Green Building Rating Systems And Local Implementation

Development of International Green Building Rating Systems And Local Implementation

Research on 3D Model Calculation of Green and low-carbon New Buildings

Due to the widespread use of solid clay bricks in building houses in China, the annual destruction of farmland by burning bricks amounts to about 100000 acres. Faced with these problems, China has an extremely urgent demand for green and low-carbon buildings. Therefore, this article conducts computational research on the 3D model of a new type of green and low-carbon building. Due to the significant differences in the geometric form and texture representation of a large number of green and low-carbonl new buildings, it is difficult to uniformly quantify their level of detail. This article considers the usefulness and accessibility of 3D model calculation data separately. The shadow length is generally the distance from the selected building's facade roof to the end of the shadow, which can avoid the influence of building shape on its length. The determination of these two points and the calculation of the distance between them will directly affect the accuracy of shadow length calculation. Therefore, when users need to add an application subsystem to the system, they must add information such as the input and output data structures of the subsystem to the module. The height information calculation method uses the building and shadow imaging geometric modeling to calculate the building height by establishing the relationship between the shadow length and the corresponding building height.

An Analysis of Real Estate Market Responses towards Climate Resilient Policies in Malaysia and Indonesia

As global warming increases climate-related disasters, countries must address its impact on real estate. Malaysia’s National Policy on Climate Change, Green Building Index, and National Urbanisation Policy, along with Indonesia’s National Action Plan on Climate Change, Climate Resilience and Adaptation Strategy, and Disaster Management Law, highlight climate resilience in real estate. This study examines these policies and their effects on the real estate markets in Malaysia and Indonesia using qualitative methods. The findings reveal that property values in both countries have increased due to a growing emphasis on sustainability and durability in the market.

Unleashing the Power of Civil Society: Examining the Impact of the Saudi Green Building Forum in Advancing Eco-friendly Construction in Saudi Arabia

This paper delves into the role of civil society in propelling green building practices, one key to a sustainable future. It focuses on the Saudi Green Building Forum (SGBF) “in Consultative Status with the United Nations Economic and Social Council, since 2017” as a case study that illuminates how civil society organizations contribute to environmental stewardship, social equity, and economic prosperity in the construction sector. The concept of green building is traced from its origins through its global development, explicitly emphasizing notable examples from Gulf Cooperation Council (GCC) countries and Saudi Arabia. The paper reassures the audience by outlining the unique and robust alignment of SGBF’s initiatives and its support for the Sustainable Development Goals (SDGs), underscoring its commitment to global sustainability. The study presents a descriptive analysis based on desktop research, illustrating the transformative impact of civil society in promoting sustainable construction practices through the SGBF. Key aspects covered include the historical evolution of the green building movement, successful implementations of green building standards, and the activation of civil society institutions and organizations in driving sustainability. The paper showcases SGBF’s strategies and projects as exemplary models of civil society’s contribution to greening the built environment and fostering a sustainable future in Saudi Arabia and beyond. The objective is to inspire by highlighting civil society’s far-reaching impact on the construction sector’s environmental, social, and economic dimensions of sustainable development.

Sustainability assessment with the green retrofitting concept for building: A study case in the Gresik regency, Indonesia

In green construction, sustainable resources are essential. One such material is copper, which is widely utilized in electronics, transportation, manufacturing, and residential buildings. As a very useful material, it has many beneficial impacts on human life. Observed from the recent demand spike is in line with the overall trend and the current growing smelter construction in Indonesia. Researchers intend to adapt the existing Copper Smelting Plant Building into an environmentally friendly building as a part of the production chain, in addition to reducing public and environmental concerns about the consequences of this development. We have identified a disparity in cost, where the high cost of green buildings is an obstacle to its implementation to enhance the cost performance with increased renewable energy of the Smelter Construction Building, this study investigates the application of LEED parameters to evaluate green retrofit approaches through system dynamics. The most relevant features of the participant assessments were identified using the SEM-PLS approach, which is used to build and test statistical models of causal models. We have results for this Green Retrofitting study following significant variables according to the following guidelines: innovation, low-emission materials, renewable energy, daylighting, reducing indoor water usage, rainwater management, and access to quality transit.

Research on the Updating and Selection of Greening in Sponge Cities

With the frequent occurrence of urban waterlogging, the concept and construction of sponge city have been carried out in many inland cities. Urban greening is not only an integral and important part of sponge cities, but also has a considerable impact on climate and urban landscape. This paper analyzes the function and existing problems of sponge city greening. In the past planning, the selection of certain trees brought problems such as flying catkins and pollen to people’s lives. Not only are they an allergen for many residents, but they also pose a fire hazard. At the same time, the construction of some green facilities lacks rationality. They are not only difficult to play the role of interception, but also easy to water in the flower bed in rainy weather, resulting in root rot. In addition, this paper also discusses the improvement of tree species and greening facilities. For some problem trees which are planted in a large area and difficult to renew in a short time, some mitigation measures are put forward. Finally, the vertical greening and rainwater gardens which have great potential in the green selection of sponge city are introduced. This paper is devoted to exploring more scientific and reasonable choices in the greening of sponge cities, while alleviating urban waterlogging and minimizing the impact on residents’ lives.

A Newly Bio-Based Material for the Construction Industry Using Gypsum Binder and Rice Straw Waste (Oryza sativa)

Construction is one of the economic sectors with the greatest influence on climate change. In addition to working procedures, the primary carbon footprint is attributed to the choice of materials and the energy required for their manufacturing. The underlying idea of this study is to minimize the effects and offer new solutions to emerging problems in the quest for materials that can be deemed as natural, such as gypsum (calcium sulphate dihydrate) and rice straw (Oryza sativa). The acquisition of these materials involves a lower carbon footprint compared to the conventional materials. It is well known since ancient times that gypsum and cereal straw can be used in construction, with numerous examples still available. Cereal straw is one of the oldest construction materials, traditionally combined with earth and occasionally with certain binders, with it continuing to be employed in construction in many countries to this day. This work showcases the feasibility of producing stable prefabricated elements from straw waste with construction gypsum, addressing a significant environmental concern posed by the alternative of having to burn such materials. In this study, for the proposed bio-based material, specific tests, such as thermal conductivity, flexural and compressive strength, and fire resistance, were carried out to evaluate the principal physical and mechanical characteristics for different compositions of water, gypsum, and straw fiber samples. The results highlighted the good performance of the proposed materials in order to spread their use in the green building industry. The addition of straw fibers improved, in different ways, some important physical characteristics of these components so as to diminish environmental pollution and to obtain better material performance. The tests highlighted the different behaviors of the proposed material with respect to the different cuts of the straw and as well as the water/gypsum ratio; this is not very well understood and probably depends on the micro structure of the straw fibers. The blocks with raw straw showed a significant improvement in the breaking mechanism (1775.42 N) compared to the blocks with cut straw (712.26 N) when subjected to bending tests, and their performance in compression tests was also acceptable. Additionally, a very interesting reduction in thermal conductivity was achieved by incorporating rice straw (0.233 W/mK), and high fire exposure times were obtained, with gypsum preventing the spread of ignition in any type of fiber.

Challenges in the green building supply chain: multi-objective planning for prefabricated factory site selection

Challenges in the green building supply chain: multi-objective planning for prefabricated factory site selection

Multiple Paths to Green Building Popularization Under the TOE Framework—A Qualitative Comparative Analysis of Fuzzy Sets Based on 26 Chinese Cities

Green buildings are a crucial element in achieving sustainable development. The use of green buildings can save energy and reduce greenhouse gas emissions. Promoting the widespread adoption of green buildings has become a significant concern in many countries or regions. Although previous studies have identified a range of key factors influencing the promotion of green buildings, further analysis of the combination of these critical factors needs to be conducted. Therefore, based on the technology–organization–environment (TOE) framework, this study utilizes the fuzzy-set qualitative comparative analysis (fsQCA) method to analyze survey data from 26 cities in China, resulting in four high-level configuration paths for the widespread adoption of green buildings. The results indicate that (1) achieving high levels of widespread adoption of green buildings does not depend on any single factor; instead, it relies on the collaborative interaction of multiple elements across technological, organizational, and environmental dimensions; (2) the potential substitution relationships between conditional variables among different configurations within the TOE framework indicate that science and technology expenditure and gross domestic product play more significant roles in the path combinations for the promotion of green buildings; (3) through the study of the substitutive relationships of four configuration paths, it was found that when a city faces challenges in the widespread adoption of green buildings, such as an insufficient number of green building technology patents or underdeveloped green finance incentive systems, it can still achieve efficient green building adoption by formulating corresponding policies and enhancing cultural value guidance for groups like developers, contractors, and consumers. Conversely, the same is true. This paper explores the combination of critical factors in green building adoption, providing insights into addressing the differing foundational conditions of cities in the process.

Investigation of Community Engagement in Sustainable Construction Projects: Case Studies from Nigeria

This study investigates the role of community engagement in sustainable construction projects in Nigeria, focusing on three case studies: a green residential building in Lagos, an eco-friendly community center in Abuja, and a sustainable water infrastructure project in rural Kano. Using a mixed-methods approach, data were collected through interviews, surveys, and document analysis. The research identifies significant variations in engagement practices, with Lagos showing high engagement levels, leading to greater community acceptance and better environmental outcomes. Key success factors include strong leadership, adequate funding, and effective communication, while challenges such as socio-cultural barriers and political interference were noted. The findings emphasize the importance of sustained, tailored engagement strategies to enhance project sustainability and community support. This study contributes to the literature by providing empirical data on the long-term impacts of community engagement, offering insights for policy makers and project managers to improve community participation in sustainable construction.

Assessment of dyna clue model for prediction of spatio-temporal dynamics of urbanisation and green space in Jaipur district, Rajasthan (India)

Urbanisation in Jaipur, Rajasthan’s capital, has significantly impacted land use and land cover (LULC) over the past four decades. This study addresses the pressing issue of how rapid urban expansion affects green spaces and environmental balance. Utilizing satellite imagery and a support vector machine (SVM) algorithm, LULC maps for 1993, 2003, 2013, and 2023 were generated to analyze changes in land cover, including agriculture, barren land, built-up areas, vegetation, wasteland, fallow land, and water bodies. The Dyna-CLUE model, incorporating variables such as elevation, slope, aspect, and proximity to streams and roads, was employed to forecast LULC changes for 2033 and 2043. The findings reveal a marked increase in built-up areas at the expense of vegetative cover, driven by urbanization, infrastructural development, agricultural expansion, climate change, and policy decisions. With Kappa coefficients indicating high agreement between classified land cover and ground truth data (84–90% accuracy), the study projects continued urban growth and further decline in vegetation. This underscores the urgent need for sustainable land use planning and environmental conservation in Jaipur. Proposed strategies to address these issues include establishing ecological zones, enforcing green building regulations, promoting mixed-use development, and implementing a 15-min green space policy. These measures aim to enhance green space distribution and support Jaipur’s transition towards a greener urban environment.

Novi Sad cultural stations as healthy buildings for wellbeing concept

Abstract Creating spaces for all citizens through the cultural stations project within the Novi Sad - European Capital of Culture 2022 has set an example of applying the concept of well-being which involves integrating various elements that support physical, mental, and social health. Cultural stations project in the city of Novi Sad is a concept supporting cultural programming, healthy food options, mental health support, accessibility and inclusivity, as well as community engagement. Social interaction in urban areas is vital for mental and emotional well-being, fostering a sense of belonging and community, diverse cultural programming that appeals to different groups, cultural activities such as art exhibitions, performances, workshops, and community events provide opportunities for creativity, learning, and social engagement, enhancing overall well-being. Access to cultural stations, spending time there has been linked to reduced stress, improved mood, and increased feelings of well-being within 7 neighborhoods of Novi Sad. This includes providing barrier-free access, accommodations for individuals with disabilities, and programming that is inclusive and welcoming to everyone. Participation of the local community in the design, programming, and management of cultural stations is also important. By integrating these principles into the design, programming, and management of cultural stations, Novi Sad creates vibrant, inclusive, and healthy spaces that contribute to the overall well-being of its residents and visitors. Cultural stations are located in different parts of the city in order to provide accessibility to all citizens. Their arrangement is in accordance with the recommendations of green construction and restoration, and the interior and surroundings foster respect for nature and nature-based solutions. Also, they are developing different content in line with culture, but also science, health and smart solutions as a tool for well-being.

Research on the Green Construction Technology of Stilt Houses Based on the Climate Adaptation of Transitional Seasons

Stilt houses are extremely adaptable to terrain and climate. However, current indoor thermal environment research in transitional seasons is not prominent. Therefore, in this research, a typical stilt house in southwest China was chosen as the research object and analyzed by combining Climate Consultant climate analysis software and field measurement data. The results showed that the indoor thermal stability of a stilt house was excellent during the transition season, and the attic had the most obvious climate regulation, with the maximum temperature difference between indoors and outdoors being 9 °C when the outdoor temperature was the highest. The difference between the mean radiant temperature and the average air temperature was only 0.04 °C, and the radiant effect of the enclosure on the interior was small. The indoor relative humidity ranged from 63.2% to 85.1%, showing high relative humidity, but the fluctuation was relatively stable. Stilt floors did not play a significant role in climate regulation during the transition season, and the semi-open space structure was more prone to moisture accumulation when the outdoor humidity was high. Regarding practical application, the climate adaptation strategies of shading, cooling, and dehumidification were applied in the transition season, but dehumidification was ineffective.

A novel ultra-light bio-based fiberboard from mexican feather grass for thermal and acoustic insulation in green building construction applications

The use of natural fibers as raw materials for insulation fiberboard production is emerging as a strategy to replace wood fibers. This study developed an ultralightweight natural fiber insulation core fiberboard (CFB) with high mechanical strength, hygroscopic resistance, and excellent acoustic and thermal insulation properties. This study examined the production of CFB, which utilizes Mexican feather grass fibers with an epoxy resin binder across a range of densities of 0.18–0.36 g∙cm−3. Furthermore, the impact of incorporating a reinforcing skin layer of woven glass fibers on the core fiberboard's physical, mechanical, acoustic, and thermal properties was evaluated. All the fiberboard samples exhibited excellent thermal conductivity values (0.048–0.057 W/mK), which increased with increasing panel density (0.18–0.36 g∙cm−3). In addition, all of them displayed superior mechanical properties following the ASTM C208 standard. In terms of climatic resistance of the fiberboards, the results displayed excellent water resistance, exhibiting minimal humidity content (<5 %), thickness swelling (<6.5 %), and a hydrophobic surface, as indicated by the high-water contact angle (>121.96 at 30 s). Sound reduction exhibited a frequency-dependent tendency, with denser and sandwich fiberboards showing greater sound reduction of up to 27.9–36.56 dB at 3150 Hz for CFB-0.36 and SFB-0.52, respectively. Following ASTM C208, both core fiberboards and those coated with woven glass fiber skins (sandwich fiberboards, SFB) met the thermomechanical property requirements for regular and structural wall sheathing applications, respectively. These findings highlight the potential of Mexican feather grass as a bio-based alternative to wood, enabling the production of eco-friendly ultralightweight fiberboards with excellent thermomechanical properties suitable for building construction, such as regular and structural wall sheathing applications and ceiling decorations.

Exploring the Interaction and Impact of Green Building Design on People and Space

Abstract: With the progress and development of society, people's living standards improve at the same time, environmental pollution and resource shortages environmental problems also come. Construction engineering is one of the largest energy-consuming industries in China, and the implementation of a sustainable development strategy has become a top priority. Therefore, the state put forward the concept of greening and sustainable development, and green building has become a mainstream design concept. The purpose of this paper is to elaborate on the principles and design points of green building design and to study and discuss the application cases of green building design. Analyze the interaction and impact of green building design on people and space by analyzing the effects and impacts of the implementation of different designs in green building design cases, including focusing on siting design, ventilation design, energy efficiency design, recyclable design, plant design, and lighting design. Summarise the importance of applying green building design concepts and effective designs that have a positive impact on people. The results of the study can provide practical suggestions on improving the sustainability and eco-friendliness of green buildings for green building design stakeholders, such as architects, policymakers, and related stakeholders, and this study has certain reference values and significance.