Article
Energy & Fuels
Francesco Guarino, Giovanni Tumminia, Sonia Longo, Maurizio Cellura, Maria Anna Cusenza
Summary: This study analyzes the impact of climate change on building performance and proposes a simple and free building simulation tool for future climate analysis. Through a case study, the tool's effects on building models under different climate change scenarios are demonstrated.
Article
Environmental Sciences
Sven Eggimann, Robin Mutschler, Kristina Orehounig, Massimo Fiorentini
Summary: The original purpose of daylight saving time (DST) was to save energy for lighting. However, DST also affects the heating and cooling demand of buildings, which has not been thoroughly studied. In this research, the impact of DST on heating and cooling demand in archetype offices across the United States was simulated for different climate trajectories. It was found that DST reduces cooling demand more than it increases heating demand. Although climate change increases future cooling demand, it does not significantly affect the overall energy demand reduction potential when DST is introduced. Evaluating the impact of work hour shifts on building energy demand is important, and it is necessary to determine whether saving cooling or saving heating energy can achieve greater CO2 emission reductions.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Nisrine Kebir, Nicole D. Miranda, Laila Sedki, Stephanie Hirmer, Malcolm McCulloch
Summary: This paper presents a model for retrofitting traditional rural dwellings in Uganda with passive cooling and daylighting measures. The aim is to address the challenges of high outdoor temperatures caused by climate change, while considering the limited access to electricity in rural areas. The simulations and calculations demonstrate the energy savings and payback periods of different passive measures, and identify two cost-effective scenarios for mud huts and semi-permanent dwellings.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2022)
Article
Green & Sustainable Science & Technology
Chuyin Tian, Guohe Huang, Joseph M. Piwowar, Shin-Cheng Yeh, Chen Lu, Ruixin Duan, Jiayan Ren
Summary: This study develops a stochastic RCM-driven residential energy demand analysis to assess the heating and cooling energy demand of residential buildings in British Columbia, Canada. The results suggest a significant increase in energy use for cooling and a slight decrease for heating over the next 80 years. The projected energy use difference between optimistic and pessimistic levels could result in significant greenhouse gas emissions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Sheng Zhang, Pawel Oclon, Jiri Jaromir Klemes, Piotr Michorczyk, Kinga Pielichowska, Krzysztof Pielichowski
Summary: This paper introduces the recent developments in Renewable Energy Systems for building heating, cooling and electricity production with thermal energy storage. The buildings contribute about 40% of total energy consumption, with significant potential for primary energy savings. The application of various Renewable Energy based systems is discussed including: the presentation of Hybrid Renewable Energy bases systems, methodology for their design and methods for the optimisation of Buildings RES.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Construction & Building Technology
Luka Pajek, Jaka Potocnik, Mitja Kosir
Summary: This research investigates the relevance of passive design measures for heating and cooling energy use in residential buildings. The study shows that the importance of these measures will change under projected global warming effects. The opaque envelope U value is found to be most relevant for heating energy use, while the window-to-floor ratio is the most important parameter affecting cooling energy use.
ENERGY AND BUILDINGS
(2022)
Article
Construction & Building Technology
Essam Elnagar, Samuel Gendebien, Emeline Georges, Umberto Berardi, Sebastien Doutreloup, Vincent Lemort
Summary: This study explores the potential changes in heating and cooling energy demands in buildings due to climate change. The results showed that heating energy demand is expected to decrease in the future, while cooling energy demand will significantly increase. Retrofit strategies can help mitigate the increase in cooling energy demand.
ENERGY AND BUILDINGS
(2023)
Article
Green & Sustainable Science & Technology
Chuyin Tian, Guohe Huang, Chen Lu, Xiong Zhou, Ruixin Duan
Summary: The global warming trend will significantly impact building energy budgets, with traditional climate indices potentially underestimating or overestimating energy demand. The newly developed high-resolution climate indicators can more accurately predict future energy demand changes, with better performance in regions with distinct seasonal variations.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Mehdi Gholami Rostam, Alireza Abbasi
Summary: Building energy designs should consider future climate change and a dynamic climate-adaptive framework can improve energy efficiency and reduce energy demand by an average of 23%.
Article
Thermodynamics
Yichi Zhang, Par Johansson, Angela Sasic Kalagasidis
Summary: This study evaluates centralized district heating and cooling systems, ultra-low temperature district heating systems, and bidirectional fifth generation 5GDHC systems in a representative residential community in the Nordic district heating context. The results suggest that in the future low-energy building stock, the increased cooling demand makes the 5GDHC system the most economically attractive choice.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
D. Romanov, B. Leiss
Summary: Recent developments in the building sector, district heating and cooling field, and geothermal technology show efforts towards more sustainable and climate-friendly heating and cooling supply systems. The trend in district heating networks is towards lower temperatures and higher building envelope requirements, while geothermal technology is advancing towards extracting heat from deeper subsurface layers.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Environmental Sciences
Rabindra Pokhrel, Jorge E. Gonzalez, Prathap Ramamurthy, Daniel Comarazamy
Summary: This research evaluates the impact of building energy mitigation measures on urban climate. It finds that these measures can reduce the intensity and duration of extreme heat events and mitigate urban heat island effects. This is significant for protecting surrounding urban ecosystems and natural resources.
Review
Construction & Building Technology
Ammar M. Khourchid, Salah Basem Ajjur, Sami G. Al-Ghamdi
Summary: This review examines the impact of climate change on building cooling requirements and summarizes the variability in different climatic zones. The findings suggest that climate change will increase building cooling demand in all climatic zones, with the greatest increase occurring in temperate and cold climatic zones. Certain mitigation strategies show potential in reducing the increase in cooling demand, but their effectiveness varies depending on the strategy and climate zone. Further research is needed to assess whether existing cooling systems can handle the future increase in cooling requirements.
Review
Green & Sustainable Science & Technology
Ma Katrina Raneses, Alice Chang-Richards, Kevin I-Kai Wang, Kim Natasha Dirks
Summary: This study conducted a systematic review based on 65 selected articles, identifying 21 climate-adaptive measures for housing categorized into passive design, building technology, and building performance assessment tools. The majority of identified benefits were related to improved thermal comfort and energy efficiency, laying the foundation for further research on enhancing building performance and adaptive ability in response to climate change.
Article
Green & Sustainable Science & Technology
Oran R. Young
Summary: There is debate about whether the Arctic is distinctive and uniform enough to adopt a holistic perspective for its future. Climate change is seen as a central thread tying together various perspectives, while also raising questions about how to address the consequences of adapting to a changing biophysical and socioeconomic setting in the Arctic's future.
Article
Engineering, Mechanical
Fabio Malizia, Bert Blocken
Summary: This study investigates the aerodynamic performance of disk wheels and compares the performance of flat side disks, curved side disks (lenticular), and asymmetrical semilenticular front wheels. The results show that, except for one simulated wheel, all (semi-)lenticular wheels perform better than flat disk wheels at various yaw angles. Semilenticular wheels demonstrate lower drag at medium and large yaw angles compared to symmetric lenticular wheels. The study also confirms the significant influence of the tire width to wheel width ratio on the aerodynamic drag of cycling wheels.
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
(2023)
Article
Engineering, Mechanical
J-H. Thysen, T. van Hooff, B. Blocken, G. J. F. van Heijst
Summary: Knowledge of the instantaneous flow behavior of interacting opposing jets is important. This study uses 2D particle image velocimetry to measure and analyze isothermal interacting opposing jets in a reduced-scale water-filled enclosure. The results show that the transient interaction of the opposing jets forms a turbulent plane jet and enhances mixing within the enclosure.
EXPERIMENTS IN FLUIDS
(2023)
Article
Engineering, Civil
Claudio Alanis Ruiz, Twan van Hooff, Bert Blocken, GertJan van Heijst
Summary: Air curtains play a crucial role in building applications by restricting heat and mass transport across continuously open entrances, leading to energy efficiency and improved air quality. This study systematically evaluates the separation efficiency of air curtains under moderate environmental temperature and pressure difference conditions and finds that the performance is strongly dependent on these parameters. The results suggest dynamically controlling the supplied air curtain jet momentum based on variable environmental conditions to achieve optimal performance.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Engineering, Civil
J. Zuzul, A. Ricci, M. Burlando, B. Blocken, G. Solari
Summary: This paper investigates the accuracy of URANS and SAS in reproducing a vertical downburst wind. The study shows that the SAS simulation with the k-omega SST turbulence model can effectively capture the dynamics of the phenomenon and is in good agreement with experimental and field measurement data.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Construction & Building Technology
Francesco Carlucci, Roel C. G. M. Loonen, Francesco Fiorito, Jan L. M. Hensen
Summary: This study proposes an innovative approach to analyze the energy behavior of complex kinetic shading systems. It develops and validates a tool based on Python and EnergyPlus that can consider the continuous nature of energy simulation and analyze complex kinetic systems. The algorithm provides a comparison sheet to evaluate the performance of the system by providing an EnergyPlus model and a model of the shading configurations.
JOURNAL OF BUILDING PERFORMANCE SIMULATION
(2023)
Article
Construction & Building Technology
Anina Sarkic Glumac, Onkar Jadhav, Vladimir Despotovic, Bert Blocken, Stephane P. A. Bordas
Summary: Computational fluid dynamics (CFD) is used to estimate wind pressures and loads on high-rise buildings. Low-fidelity simulations (RANS) efficiently estimate wind pressures over a wide range of wind directions but lack accuracy. High-fidelity simulations (LES) provide more accurate results but have higher computational costs. A multi-fidelity machine learning framework is proposed to combine the benefits of both approaches and improve simulation accuracy while maintaining computational efficiency. The study demonstrates that accurate predictions of wind pressures can be achieved using only 3 LES-related wind directions.
BUILDING AND ENVIRONMENT
(2023)
Article
Computer Science, Interdisciplinary Applications
Thijs van Druenen, Bert Blocken
Summary: This paper presents finite-volume-based scale-adaptive simulations of single paceline configurations up to eight cyclists for three different postures. Drag reduction in pacelines is a key strategy to limit energy expenditure in cycling. This study systematically investigates the effect of cyclist posture on drag in single pacelines and provides data through wind tunnel measurements. The results show that changing both posture and position can significantly reduce drag in pacelines, with a maximum reduction of 15% for the leading cyclist and up to 68% in an eight cyclist paceline.
COMPUTERS & FLUIDS
(2023)
Article
Engineering, Civil
A. Ricci, R. Vasaturo, B. Blocken
Summary: The expanding capacity of seaports for worldwide competitiveness is increasing risk exposure due to larger wind forces caused by increasing ship size. The current alert system for port operations suspension based on wind conditions is unreliable due to limited sensor locations. Real-time prediction of local wind conditions in seaports is still challenging despite safety management efforts. This paper aims to develop an integrated tool using computational fluid dynamics to transfer measured wind field from undisturbed positions to sea lock for better risk awareness and accident prevention.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Engineering, Civil
Bert Blocken, Stefanie Gillmeier, Fabio Malizia, Thijs van Druenen
Summary: This paper presents wind tunnel measurements and CFD simulations of cyclist drag for 29 different cyclist-car arrangements. The study found that drafting in-line behind a car at a distance of 10 and 40 m leads to substantial drag reductions of about 20 and 7%, respectively. The staggered positions can lead to either a large drag increase up to almost 9% or a moderate drag decrease up to 1.4%. These drag changes can induce time gains or losses that go up to several seconds per kilometre, which is large enough to potentially influence the outcome of cycling races.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Construction & Building Technology
S. Iousef, H. Montazeri, B. Blocken, P. J. V. van Wesemael
Summary: This study evaluates the performance of wall modeled (WM) and wall-resolved (WR) large eddy simulation (LES) methods for flow and thermal field at the facades of a low-rise building. The results show significant deviations in the predicted near-facade flow pattern and surface convective heat transfer coefficient (CHTC) with the use of WM-LES. Grid resolution has a significant impact on the CHTC results and deviations are up to 88%. The performance of different wall functions is also investigated, with the enhanced wall function showing better performance compared to the non-blended law of the wall for certain regions of the facades.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Angelica Walsh, Daniel Costola, Jan L. M. Hensen, Lucila Chebel Labaki
Summary: This paper presents the first application of performance-based zoning to Brazil, using an open-source toolbox to revise the Brazilian climatic zoning standard. The study simulates and analyzes 100 variants of a detached dwelling for 298 locations in terms of energy demand, thermal comfort, and mould growth risk. The proposed zoning method, incorporating expert insights, outperforms the current Brazilian and degree-day zones.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
B. Tian, R. C. G. M. Loonen, J. L. M. Hensen
Summary: This paper presents a novel method for comprehensive solar irradiance assessment that considers the dynamic partial shading impacts from trees. The method, which takes urban point clouds as input, shows significant reduction in simulation errors compared to alternative approaches, while limiting the required input data. The primary source of uncertainty stems from mismatches between tree morphology in the fusion model and reality.
ENERGY AND BUILDINGS
(2023)
Article
Engineering, Civil
A. K. R. Jayakumari, S. Gillmeier, A. Ricci, R. Guichard, B. Blocken
Summary: The study aims to investigate the effects of atmospheric wind on mechanical depressurization in asbestos containment zones. Experimentations were conducted in wind tunnels with different scaling ratios to analyze external pressure characteristics and duration of threshold pressure exceedance.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Energy & Fuels
Shuwei Wang, Pieter-Jan Hoes, Jan L. M. Hensen, Olaf C. G. Adan, Pim A. J. Donkers
Summary: With the increasing share of renewable energy in total energy consumption, the temporal mismatch between energy supply and demand in buildings is becoming a challenge. Thermochemical heat storage, with its considerable energy density, acceptable cost, and negligible heat loss, is a promising alternative to common heat storage solutions in building applications. This study proposes a method that combines modeling and simulation to assess the potential impact and benefit of a thermochemical heat storage system integrated into a building, using a data-driven surrogate model and a building performance simulation engine. The results from a case study show that the heat battery can effectively reduce electricity consumption for heating a detached house without sacrificing thermal comfort, and that a small-scale heat battery exhibits efficient usage of the designed storage capacity.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
