Article
Construction & Building Technology
Konstantin Verichev, Antonio Serrano-Jimenez, Manuel Carpio, Angela Barrios-Padura, Carmen Diaz-Lopez
Summary: The life-cycle cost analysis (LCCA) is a widely used method for determining the optimum insulation thickness of building envelopes. This study analyzed the variations and uncertainties of LCCA results based on different HDD and CDD calculation methods in Mediterranean and Semi-Arid climates. The results showed that the choice of calculation method significantly affected the determined insulation thicknesses.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Chemical
Srinivasan Savitha, Snehasis Chakraborty, Bhaskar N. Thorat
Summary: Drying of onion shreds in solar conductive dryers (SCD) and corrugated electrical solar conductive dryers (CESCD) was investigated in this study. The sample loading volume of SCD and CESCD was improved using a fixed bed dryer (FBD) for initial drying. Techno-economic analysis was conducted to compare different loading patterns on SCD and CESCD, including dryer efficiency, payback period, life cycle savings, and internal rate of returns (IRR). CESCD exhibited higher drying rate and IRR than SCD. The drying characteristics and energy requirement were also compared between the two dryers. SCD showed better overall drying efficiency, while CESCD had patterns 1 and 3 that retained color better but were not cost-effective and profitable. Flavor and bioactives were higher in SCD-dried onion shreds than CESCD-dried ones.
Article
Thermodynamics
Maria Herrando, Raquel Simon, Isabel Guedea, Norberto Fueyo
Summary: This study examines the challenges of alternative solar systems in the food-processing industry based on hybrid PVT collectors coupled with an absorption chiller. It identifies overlapping cooling and hot water demands as a major issue with covered PVT collectors, while uncovered PVT collectors show a reasonable payback period. Environmental benefits and carbon pricing play a significant role in making all proposed solar systems economically attractive.
APPLIED THERMAL ENGINEERING
(2021)
Article
Polymer Science
Marco Pedroso, Jose Dinis Silvestre, M. Gloria Gomes, Jessica D. Bersch, Ines Flores-Colen
Summary: In the current context of climate change, reducing energy and environmental impacts while maintaining economic balance and user comfort is crucial. Thermal insulation solutions are potential allies in meeting sustainability requirements for existing buildings. This study compares innovative thermal renders with conventional insulation materials and finds that sisal-fiber-based thermal renders demonstrate the best overall performance.
Article
Thermodynamics
Soowon Chae, Sangmu Bae, Yujin Nam
Summary: Recently, there has been active research on a hybrid heat pump system that combines photovoltaic-thermal (PVT) and air source heat pump (ASHP) technologies. However, there is a lack of research on validating the integrated ASHP-PVT system model based on real buildings and designing the integrated system optimally. In this study, a prediction model was constructed using dynamic simulation and validated based on a real building. The integrated system was optimally designed for real application, and a comprehensive performance evaluation was conducted using the conventional model.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Michela Torti, Ilaria Venanzi, Simon Laflamme, Filippo Ubertini
Summary: Life-cycle cost analysis is a popular approach for civil infrastructure design, and can be leveraged for structures with structural health monitoring systems to quantify benefits and support long-term implementation. However, the long-term assessment for new structures regarding the impact of structural health monitoring systems on performance still requires ongoing research.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2022)
Article
Thermodynamics
Saba Arif, Juntakan Taweekun, Hafiz Muhammad Ali, Zamri Noranai, Adil Qadeer
Summary: Energy consumption by air conditioners in buildings is 57% globally, but it is 18.6% at bus stations in Thailand due to tourism. This study aims to analyze the feasibility and economics of small air conditioning pods at a bus station in Hat Yai, Thailand. The results show that the proposed system is more economical than the previous one, with a payback period of 1.72 years and a 31% reduction in electricity cost after installation. The AC pods successfully lowered the cabin temperature to 17 degrees Celsius using only 4.9 A and 1127 W.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Robert Dylewski, Janusz Adamczyk
Summary: This study proposes methods for determining the optimal thermal insulation thickness based on the number of degree days in the heating period for economic and ecological reasons. Life cycle assessment was used for ecological analysis. The results show that the optimal insulation thickness for ecological reasons is significantly greater than for economic reasons, depending on the building's condition, heat source, and insulation material.
Article
Green & Sustainable Science & Technology
Zihao Li, Wei Zhang, Lingzhi Xie, Wei Wang, Hao Tian, Mo Chen, Jianhui Li
Summary: The research on the Semi-Transparent Photovoltaic (STPV) Window revealed that its EPBT is 13.8 years and GPBT is 10.4 years, both less than the preset service life of 25 years. Optimization analysis can make the STPV window more economical and sustainable.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Fakhreddine Abbassi, Nabiha Naili, Leila Dehmani
Summary: This paper determines the optimal thickness of Trombe walls using an energetic and economic analysis. The results show that stone and concrete are the best materials, reducing heating loads by 50% and achieving payback within a short period of time.
ENERGY SCIENCE & ENGINEERING
(2022)
Article
Construction & Building Technology
Mohammed R. A. Alrasheed
Summary: This study improved the performance of Composite Insulation External Walls (CIEW) by optimizing the thickness of the structural and insulation layers. The research aimed to minimize the Life Cycle Cost (LCC) and maximize the Life Cycle Savings (LCS) of CIEW. The results showed that the LSE method had greater economic efficiency compared to the traditional optimization method.
Article
Thermodynamics
Hye-Won Dong, Jae-Weon Jeong
Summary: This study experimentally evaluated the energy and economic benefits of an ORC-based LD-assisted air conditioning system, showing that the heat priority mode of ORCLD has the lowest primary energy consumption, shortest payback period, and life cycle cost, thus recommending its use.
Article
Green & Sustainable Science & Technology
J. Antonanzas, J. C. Quinn
Summary: While the PV industry has achieved greenhouse gas emissions payback between 2012 and 2016, its effectiveness in preventing other environmental damages is limited. More technology improvements are needed to lower the impact in other environmental categories beyond climate change and make solar PV more sustainable.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Yeobeom Yoon, Byeongmo Seo, Junghyun Mun, Soolyeon Cho
Summary: South Korea is densely populated and the majority of residential buildings are apartments, with a significant number being over 20 years old. Old apartments have poor thermal performance and balconies have been removed to create more indoor space. This paper proposes a retrofitting method using a double-skin facade system that can reduce energy consumption by up to 44.1%. Despite a long payback period, this method has the potential for significant energy savings and CO2 emission reductions. Evaluation rating: 8/10.
JOURNAL OF BUILDING ENGINEERING
(2023)
Proceedings Paper
Construction & Building Technology
Ihab Alsurakji, Ramez Abdallah, Mahmoud Assad, Amjad El-Qanni
Summary: This study focused on the optimization of insulation thickness for building's external wall in Palestine, collecting temperature and solar radiation data for one year for cities in the study and analyzing seven climate zones in Palestine.
2021 12TH INTERNATIONAL RENEWABLE ENGINEERING CONFERENCE (IREC 2021)
(2021)
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)