Article
Construction & Building Technology
Janez Dolsak
Summary: Energy-efficient retrofits (EERs) are a valuable solution to address energy poverty in residential sector, but their implementation rates are lower than policy goals. This study examines the determinants of EERs through a comprehensive literature review and bibliometric analysis. The results identify five main groups of determinants: information and policy measures, economic factors, socioeconomic characteristics, technical and building characteristics, and behavioral factors. Furthermore, a visual analysis of influential determinants in the literature highlights important factors such as thermal comfort, energy cost, sustainable retrofit, and behavior change. The study suggests a comprehensive approach is needed to promote EERs and addresses the various aspects of household decision-making processes.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Yi Wang, Yinchao Shangguan, Zhichao Wang, Yu Xue
Summary: Energy consumption in the building sector is significant and accurate prediction is crucial for urban energy planning. The Bayesian Calibration model has been widely used, but previous research did not consider the matching between calibrated parameters and the actual situation, leading to large deviations. This study proposed a method to adjust the hyperparameter prior distribution in the Bayesian calibration, which significantly improved the prediction performance and provided more accurate energy consumption prediction after energy retrofit.
ENERGY AND BUILDINGS
(2022)
Article
Development Studies
Eddie Chi-man Hui, Ka-hung Yu
Summary: This study compares the price premiums for living space in certified green buildings in two different housing sub-markets in Hong Kong. The main finding suggests that buyers in the mass housing market are generally willing to pay larger price premiums for properties in certified buildings. This could have implications for the availability of housing flats of varying sizes in certified green residential buildings.
HABITAT INTERNATIONAL
(2021)
Article
Construction & Building Technology
Yongtao Tan, Ting Luo, Xiaolong Xue, Geoffrey Qiping Shen, Guomin Zhang, Lei Hou
Summary: This study aims to further examine the applicability and importance of green retrofit technologies (GRTs) and green retrofit policies (GRPs) for aged residential buildings in Hong Kong, as well as analyze the correlations between GRTs and GRPs to develop a priority guide for promoting green retrofit in the region. The findings can provide valuable insights for stakeholders and inform the development of future green retrofit policies by the local government. Additionally, the study serves as a fundamental guide for future green retrofit research and development in both local and global contexts.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Guo Liu, Kunhui Ye, Yongtao Tan, Zhijia Huang, Xiaohu Li
Summary: This study conducted a systematic review based on 47 publications and identified 689 factors influencing homeowners' ER decision-making, grouping them into seven categories. The study pinpointed the crucial roles of beliefs about ER consequences, the availability and credibility, decision-maker characteristics, and social influence in shaping homeowners' decision-making. It is suggested that the effectiveness of ER policies can be improved by harnessing multiple motivations, social influence, and ER effects, providing a holistic profile for modeling energy decisions in residential buildings.
ENERGY AND BUILDINGS
(2022)
Article
Construction & Building Technology
Xiaosen Huo, Hao Xue, Liudan Jiao
Summary: The green retrofit of old residential areas is crucial for urban renewal and sustainable development of existing buildings. This study builds a list of risk factors in retrofit projects in Old Residential Areas (ORAs), collects opinions on the possibility and impact of these risk factors from project participants through a questionnaire survey, develops a risk assessment model based on C-OWA and grey cluster analysis, and proposes risk management and control measures based on different risk levels. A case study in Chongqing A-zone is conducted to assess comprehensive risk and provide recommendations for risk control in retrofit projects. These research findings serve as references for risk management in retrofit projects in ORAs.
ENERGY AND BUILDINGS
(2023)
Article
Environmental Studies
Yupei Lai, Yutong Li, Xinyi Feng, Tao Ma
Summary: A study conducted on 9936 questionnaires from urban and rural residents in China revealed that over 90% of respondents are willing to adopt green retrofit, with installing zoned temperature control systems being a generally acceptable measure. Factors such as household income, city of residence, housing type, and housing problems significantly influence residents' perceptions.
ENERGY & ENVIRONMENT
(2022)
Article
Construction & Building Technology
Jongbaek An, Dahyun Jung, Kwangbok Jeong, Changyoon Ji, Taehoon Hong, Jaewook Lee, Sean Kapp, Junki Choi
Summary: In order to achieve the carbon emission reduction target (CERT) by 2030 and carbon-neutrality by 2050, it is crucial to reduce the emission gap in the private building sector. However, the ongoing COVID-19 pandemic and the Russian-Ukraine war pose threats to the global green remodeling policy (GRP). This study analyzed the energy consumption savings, GHG emission reduction, and net present value of applying green remodeling to a private building, and found that the current policy may not be sufficient to achieve the CERT and carbon-neutrality goals.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Di Wu, Taoyuan Zhang, Jiqiang Zhang, Chao Yue, Jifu Lu, Yike Zhang, Mengze Fu
Summary: The current analysis of uncertainty in envelopes mainly focuses on the physical properties of materials. However, in underdeveloped areas with low economic and technical levels, uncertainties in retrofit strategy selection, building element selection, and construction quality are particularly significant. To obtain more reliable energy analysis results and support decision-makers, a new method combining orthogonal experiment and Latin hypercube sampling is proposed to investigate the uncertain outputs caused by these aspects. Global sensitivity analysis methods are used to screen important factors, with infiltration and wall insulation thickness being identified as the most influential factors in energy consumption.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Alicia Alonso, Rafael Suarez, Jorge Patricio, Rocio Escandon, Juan J. Sendra
Summary: This study compares acoustic facade requirements in national building regulations for new and existing buildings, revealing a lack of consensus on external noise insulation and acoustic requirements worldwide, which necessitates further discussion on the harmonization of external sound insulation requirements in acoustic regulations.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Business, Finance
Xianfang Su, Dawei Guo, Liang Dai
Summary: This study examines the correlation between green bonds and stocks in China and the influence of economic policy uncertainty (EPU) on that correlation using cross-quantilogram and partial cross-quantilogram approaches. The results show directional spillovers at different quantile levels and investment horizons, suggesting that the green bond and stock markets are more connected in extreme market conditions. The study also finds that the dependence structure between these markets varies across sectors and only certain sectors experience simultaneous growth in green stocks and bonds. In addition, green bonds can act as a safe-haven asset for green stocks and spillover effects tend to be medium- and long-term. EPU is not a significant determinant of the cross-asset relation. These empirical findings have important implications for ESG portfolio strategies and carbon neutral-oriented policymaking.
INTERNATIONAL REVIEW OF FINANCIAL ANALYSIS
(2023)
Article
Construction & Building Technology
Dzana Kadric, Amar Aganovic, Edin Kadric, Berina Delalic-Gurda, Steven Jackson
Summary: This study explores the energy reduction potential of residential buildings in Bosnia and Herzegovina using the response surface methodology. A novel energy consumption model is introduced for optimizing energy-efficient retrofit designs, which is validated with national survey data. The developed model allows for rapid prediction of energy consumption and energy savings in the residential building sector.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Francesco Cruz Torres, Javier Babi Almenar, Benedetto Rugani
Summary: The European Green Deal aims to address climate adaptation, energy, biodiversity, and pollution challenges. This paper investigates the potential of Photovoltaic-Green roof Energy Communities (PGECs) in urban areas to meet the objectives of the European Green Deal in an economically convenient manner. The research shows that PGECs can contribute to achieving the objectives of the European Green Deal in an economically convenient manner.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Business, Finance
Xiyong Dong, Youlin Xiong, Siyue Nie, Seong-Min Yoon
Summary: This study investigates the impacts of geopolitical, economic and climate policy risks on the correlations between conventional/energy stocks and conventional/green bonds. The findings suggest that both conventional and green bonds act as safe havens when geopolitical risks are high, while green bonds outperform conventional bonds in times of high economic and climate policy risks. Additionally, incorporating green bond assets into diversified portfolios provides the best hedging effectiveness, particularly for assets with a high carbon footprint.
FINANCE RESEARCH LETTERS
(2023)
Article
Energy & Fuels
Seongwon Seo, Greg Foliente
Summary: This research investigates sustainable retrofit methods to reduce the carbon footprint of existing residential buildings, categorizing energy use into different building age brackets and dwelling types to achieve targeted energy efficiency ratings. Results show that upgrading with insulation and double-glazed windows leads to faster environmental benefits than financial benefits, with building type and remaining lifecycle period being key factors influencing payback periods. Retrofitting older detached dwellings shows the greatest potential for energy and carbon savings in the case suburb.
Article
Construction & Building Technology
Samiran Khorat, Debashish Das, Rupali Khatun, Sk Mohammad Aziz, Prashant Anand, Ansar Khan, Mattheos Santamouris, Dev Niyogi
Summary: Cool roofs can effectively mitigate heatwave-induced excess heat and enhance thermal comfort in urban areas. Implementing cool roofs can significantly improve urban meteorology and thermal comfort, reducing energy flux and heat stress.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Qi Li, Jiayu Chen, Xiaowei Luo
Summary: This study focuses on the vertical wind conditions as a main external factor that limits the energy assessment of high-rise buildings in urban areas. Traditional tools for energy assessment of buildings use a universal vertical wind profile estimation, without taking into account the unique wind speed in each direction induced by the various shapes and configurations of buildings in cities. To address this limitation, the study developed an omnidirectional urban vertical wind speed estimation method using direction-dependent building morphologies and machine learning algorithms.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Xiaojun Luo, Lamine Mahdjoubi
Summary: This paper presents an integrated blockchain and machine learning-based energy management framework for multiple forms of energy allocation and transmission among multiple domestic buildings. Machine learning is used to predict energy generation and consumption patterns, and the proposed framework establishes optimal and automated energy allocation through peer-to-peer energy transactions. The approach contributes to the reduction of greenhouse gas emissions and enhances environmental sustainability.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Ying Yu, Yuanwei Xiao, Jinshuai Chou, Xingyu Wang, Liu Yang
Summary: This study proposes a dual-layer optimization design method to maximize the energy sharing potential, enhance collaborative benefits, and reduce the storage capacity of building clusters. Case studies show that the proposed design significantly improves the performance of building clusters, reduces energy storage capacity, and shortens the payback period.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Felix Langner, Weimin Wang, Moritz Frahm, Veit Hagenmeyer
Summary: This paper compares two main approaches to consider uncertainties in model predictive control (MPC) for buildings: robust and stochastic MPC. The results show that compared to a deterministic MPC, the robust MPC increases the electricity cost while providing complete temperature constraint satisfaction, while the stochastic MPC slightly increases the electricity cost but fulfills the thermal comfort requirements.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Somil Yadav, Caroline Hachem-Vermette
Summary: This study proposes a mathematical model to evaluate the performance of a Double Skin Facade (DSF) system and its impact on indoor conditions. The model considers various design parameters and analyzes their effects on the system's electrical output and room temperature.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Ruijun Chen, Holly Samuelson, Yukai Zou, Xianghan Zheng, Yifan Cao
Summary: This research introduces an innovative resilient design framework that optimizes building performance by considering a holistic life cycle perspective and accounting for climate projection uncertainties. The study finds that future climate scenarios significantly impact building life cycle performance, with wall U-value, windows U-value, and wall density being major factors. By using ensemble learning and optimization algorithms, predictions for carbon emissions, cost, and indoor discomfort hours can be made, and the best resilient design scheme can be selected. Applying this framework leads to significant improvements in building life cycle performance.
ENERGY AND BUILDINGS
(2024)