Article
Thermodynamics
Mohamed S. Yousef, Mohamed Sharaf, A. S. Huzayyin
Summary: The study conducted outdoor experiments and comparative performance evaluations, showing that PV systems incorporated with paraffin wax or paraffin/aluminum foam composite material had improved electrical efficiency in both summer and winter, with reduced electricity generation costs.
Article
Energy & Fuels
A. Malvika, U. C. Arunachala, K. Varun
Summary: Despite the superiority of active cooling methods, passive cooling approaches using burlap fabric as a siphoning agent have shown significant potential in thermal management of photovoltaic modules. Experimental analysis demonstrated that the burlap-based cooling system achieved a maximum temperature drop of 28.6% during haze weather, and a power improvement of 12-21% under clear weather conditions, confirming the effectiveness and economic viability of this technique.
Article
Energy & Fuels
Xuanxun Zhou, Xiaoling Cao, Ziyu Leng, Xu Zhou, Silin Liu
Summary: High module temperature affects PV electrical efficiency, and passive thermal management systems like PCMs and HPs are commonly used. This study proposes a novel PV thermal management system using a PV-PCM/HP coupled module. Experimental results show superior performance of the coupled PCM/HP system compared to the single system. A numerical model is developed to analyze the temperature variation and heat transfer characteristics of the PV-PCM/HP system. The design parameters, including the number of HPs, PCM thermal conductivity, PCM phase change temperature, and PCM thickness, are discussed for improving system performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Aditya Chauhan, V. V. Tyagi, A. Sawhney, S. Anand
Summary: This article evaluates and compares the enviro-economic potential of two distinctly fabricated PV/T water heating systems in view of their respective thermal optimization. The modeling results reveal an appreciable validation with the experimental data, showing a corresponding mitigation potential through economic modeling.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Mohammad Firoozzadeh, Amir Hossein Shiravi, Mojtaba Shafiee
Summary: This research focuses on the thermodynamic analysis of PV/PCM systems with different phase change materials and the use of fins for temperature control. The results indicate that using paraffin as a PCM is more effective in controlling the temperature of PV cells, especially at critical temperatures. Additionally, including fins can help reduce temperature differences and increase exergy efficiency.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Cenker Aktemur, Ilhan Tekin Ozturk
Summary: For the first time, comprehensive thermodynamic analysis and optimization of a booster-assisted ejector expansion vapor compression refrigeration system with R152a/Cu nano-refrigerant are presented to reduce the high electrical energy requirement for low temperature applications. The use of nanoparticles in the system led to improvements such as decreased main compressor discharge temperature, reduced total exergy destruction rate, increased entrainment ratio, decreased ejector area ratio, decreased panel area, and increased coefficient of performance and exergy efficiency. The results of thermodynamic optimization provide useful guidance for system design and implementation.
APPLIED THERMAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Salwa Bouadila, Tauseef-ur Rehman, Maughal Ahmed Ali Baig, Safa Skouri, Sara Baddadi
Summary: Evacuated tube solar collectors are technically viable and economically attractive for solar water heating. However, they suffer from heat and water losses along the manifold. To address this issue, Phase Change Materials (PCMs) have been integrated into the collectors. This paper presents three modified collectors and compares their performance through energy and exergy analysis, as well as economic evaluation.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Green & Sustainable Science & Technology
V. V. Tyagi, K. Chopra, B. Kalidasan, Aditya Chauhan, U. Stritih, Sanjeev Anand, A. K. Pandey, Ahmet Sari, Richa Kothari
Summary: This paper discusses the significant role of thermal energy storage in building energy performance, combining thermal properties of PCM materials and their applications in energy efficient buildings. The article summarizes the advancements, applications, and future solutions in thermal energy storage technologies, with a focus on PCM composites, control strategies, and PCM-based PV/T systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Salman Ahmed, Senji Li, Zhenpeng Li, Gang Xiao, Tao Ma
Summary: This study proposes a new system configuration to maximize the radiative cooling potential of solar cells. Results show that the proposed system can significantly reduce cell temperature and improve electrical efficiency compared to traditional glass-coated modules.
Article
Energy & Fuels
Chika Maduabuchi, Ravita Lamba, Howard Njoku, Mkpamdi Eke, Chigbo Mgbemene
Summary: Research on enhancing the performance of photovoltaic systems using thermoelectric generators has attracted increasing interest. The circular leg geometry of TEG was found to provide the highest PV-TE performance for both types of PV cells studied. Additionally, the type of PV cell significantly affects the optimal number of TEG stages in the PV-TE system.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
A. S. Abdelrazik, Ahmed Osama, Abdelwahab N. Allam, Bashar Shboul, M. A. Sharafeldin, Mohamed Elwardany, A. M. Masoud
Summary: This article assesses the use of ANSYS-Fluent CFD simulation in solar systems, providing a comprehensive overview of different solar systems without concentrators. It includes informative data about the simulations, validation techniques, and errors, as well as highlighting the benefits of using nanofluids and PCM in optimizing thermal performance and efficiency in PV systems. The article also identifies research proposals and challenges for further advancement in this field.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Song Lv, Jiahao Yang, Juwen Ren, Bolong Zhang, Yin Lai, Zhihao Chang
Summary: This research constructs a three-dimensional thermal simulation transient model for evaluating the performance of the PV-TEG-PCM system under fluctuating solar irradiation. The effects of PCM melting temperature, thickness, and thermal conductivity are studied, and the results show that the performance of the PV-TEG-PCM system is superior to other systems.
Article
Energy & Fuels
Yuanzhi Gao, Bo Chen, Dongxu Wu, Zhaofeng Dai, Changling Wang, Xiaosong Zhang
Summary: This study compares different configurations of solar power generation systems and investigates the use of flat heat pipe as a heat sink in photovoltaic systems, solar thermoelectric generator systems, bifacial-photovoltaic-solar thermoelectric generator systems, and tandem-photovoltaic-solar thermoelectric generator systems. It is found that the bifacial-photovoltaic-solar thermoelectric generator system performs the best in terms of electrical power output, while the solar thermoelectric generator system has the potential for improvement. Additionally, using nanofluid improves energy and exergy performance.
Review
Green & Sustainable Science & Technology
Abdulhammed K. Hamzat, Ahmet Z. Sahin, Mayowa I. Omisanya, Luai M. Alhems
Summary: This article provides a comprehensive overview of the application and effects of nanofluids in solar photovoltaic systems, highlighting the importance of combining nanofluids with phase change materials to enhance PV efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Someshwar S. Bhakre, Pravin D. Sawarkar, Vilas R. Kalamkar
Summary: Researchers have explored the use of phase change materials (PCMs) in a passive water-based PVT/PCM system to cool down high operating temperature of photovoltaic (PV) panels and improve electrical efficiency. The study found that a water container thickness of 30 mm is the best arrangement, resulting in a significant decrease in PV panel temperature and increase in electrical efficiency.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Xinghui Zhang, Jiaojiao Yang, Yi Fan, Xudong Zhao, Ruimiao Yan, Juan Zhao, Steve Myers
Article
Thermodynamics
Xin Xiao, Hongwei Jia, Dongsheng Wen, Xudong Zhao
Review
Energy & Fuels
Samson Shittu, Guiqiang Li, Xudong Zhao, Xiaoli Ma
Article
Thermodynamics
Samson Shittu, Guiqiang Li, Qindong Xuan, Xin Xiao, Xudong Zhao, Xiaoli Ma, Yousef Golizadeh Akhlaghi
APPLIED THERMAL ENGINEERING
(2020)
Article
Thermodynamics
Pei Huang, Yongjun Sun, Marco Lovati, Xingxing Zhang
Summary: A hierarchical design method for distributed batteries in solar power shared building communities is proposed to reduce battery capacity and minimize energy loss. By considering all distributed batteries as a virtual "shared" battery and optimizing capacities using genetic algorithm and non-linear programming, significant reductions in battery capacity and electricity loss in sharing process can be achieved. The study integrates considerations of energy needs, local PV power sharing, community control, and battery storage sharing, aiming to optimize functions in positive energy districts.
Review
Chemistry, Multidisciplinary
Song He, Wang Chen, Wansheng Yang, Xudong Zhao
Summary: This paper reviews the significance of heat exchanger coating modification in air conditioning systems for indoor dehumidification and energy saving, with a focus on desiccant-coated heat exchangers and hydrophobic/hydrophilic coated heat exchangers. It provides insights into advanced desiccant materials, operational parameters affecting thermal performance, and different types of hybrid hydrophobic-hydrophilic surfaces. Challenges and future directions are also discussed, aiming to provide valuable references for follow-up research on indoor humidity control and reducing air conditioning energy consumption.
APPLIED SCIENCES-BASEL
(2021)
Article
Construction & Building Technology
Xingxing Zhang, Juveria Shah, Mengjie Han
Summary: Positive energy districts (PEDs) aim to achieve climate neutrality through a comprehensive approach that considers technological, spatial, regulatory, financial, legal, social, and economic perspectives. ChatGPT, an advanced AI chatbot, shows potential for rapid formulation of PED information. This study compares its responses to expert opinions, demonstrating its usefulness in disseminating basic PED information.
Article
Construction & Building Technology
Yu Cui, Zishang Zhu, Xudong Zhao, Zhaomeng Li, Peng Qin
Summary: This paper introduces the application of Bayesian calibration (BC) method in building energy models, and presents a calibrated prediction model for office buildings in Guangdong, China. The model's accuracy meets the requirement of ASHRAE Guideline 14 and has significant implications for improving the quality and integrity of existing building energy databases.
Article
Construction & Building Technology
Johannes Koke, Andre Schippmann, Jingchun Shen, Xingxing Zhang, Peter Kaufmann, Stefan Krause
Summary: This paper explores the design strategies and energy systems for nearly zero-energy container buildings in different climates, achieving self-sufficiency rates of up to 80% in various applications in Sweden, Germany, and Ethiopia.
Review
Construction & Building Technology
Xingxing Zhang, Santhan Reddy Penaka, Samhita Giriraj, Maria Nuria Sanchez, Paolo Civiero, Han Vandevyvere
Summary: The concept of PED as an important part of regional/urban energy systems could be a key solution for transitioning energy systems towards carbon neutrality. Norway and Italy have the most PED projects, with most projects operating on a 'yearly' time scale and having a small spatial scale. A common funding model observed is a combination of private investment and regional/national grants.
Article
Construction & Building Technology
Bojana Petrovic, Xingxing Zhang, Ola Eriksson, Marita Wallhagen
Summary: The study aimed to explore the long-term costs for a single-family house in Sweden using the life cycle cost method. Results showed that decreasing the discount rate significantly increased the total costs, with construction costs being a major component. The findings will be useful for decision-makers in the building sector.
Article
Construction & Building Technology
Marco Lovati, Pei Huang, Carl Olsmats, Da Yan, Xingxing Zhang
Summary: Urban PV systems can meet a significant portion of residential electrical demand at a cost below consumer prices, and the profitability of the system as a whole is demonstrable. However, financing and managing a shared system remains an unsolved issue.
Article
Construction & Building Technology
Asa Hedman, Hassam Ur Rehman, Andrea Gabaldon, Adriano Bisello, Vicky Albert-Seifried, Xingxing Zhang, Francesco Guarino, Steinar Grynning, Ursula Eicker, Hans-Martin Neumann, Pekka Tuominen, Francesco Reda
Summary: The increasing global demand for energy efficiency and renewable energy sources, along with the rapid urbanization rate, has accelerated research on Positive Energy Districts (PED). However, there is still a lack of clarity on the shared definition, technological approaches, and methodological issues related to PED, calling for a global scientific discussion.
Article
Construction & Building Technology
Samer Quintana, Pei Huang, Mengjie Han, Xingxing Zhang
Summary: This study presented a digital spatial map of electricity use and district heating demand in buildings owned by the municipality in Borlange, Sweden. The findings revealed great potential for saving heating energy and a more homogenous pattern in district heating demand compared to electricity use. These results can assist stakeholders and energy advisors in understanding existing energy distributions and planning future energy strategies.
Article
Construction & Building Technology
Mengjie Han, Zhenwu Wang, Xingxing Zhang
Summary: In recent years, uncertainties in building energy performance have increased, posing challenges in data collection and establishing data pipelines at an urban scale. However, the use of Gaussian mixture models and Expectation-Maximization algorithm to generate synthetic data points has shown consistent representation with real data.
Article
Green & Sustainable Science & Technology
M. Genovese, F. Piraino, P. Fragiacomo
Summary: This research proposes the concept of a hydrogen valley in southern Italy, where hydrogen is produced centrally and delivered via fuel cell hybrid trains to refueling stations, providing transportation services. The analysis from both technical and economic perspectives shows that the cost of hydrogen and energy efficiency reached competitive levels, and hydrogen rail transport offers significant benefits in terms of emissions reduction and economic gains compared to conventional diesel trains and fully electric trains.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Miaomiao Liu, Payam Nejat, Pinlu Cao, Carlos Jimenez-Bescos, John Kaiser Calautit
Summary: This article provides a critical review of the performance of windcatchers, pointing out the current research gaps and issues, and proposing directions for further investigation and market prospects.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Solomon Boadu, Ebenezer Otoo
Summary: Despite Africa's vast energy resources, including wind energy, the continent faces challenges in developing its wind energy industry. Northern African countries and South Africa currently dominate the wind energy sector in Africa. To uplift Africa's socio-economic status, strong political will, supportive policies, and institutional frameworks are needed to drive the development of wind energy and overcome existing challenges.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
E. K. Grubbs, S. M. Gruss, V. Z. Schull, M. J. Gosney, M. V. Mickelbart, S. Brouder, M. W. Gitau, P. Bermel, M. R. Tuinstra, R. Agrawal
Summary: As the global population grows, the demand for food, energy, and water will increase significantly. However, limited land availability and competition for solar resources pose challenges to resource generation technologies. In the United States, both agriculture and solar energy production have adopted densification schemes to improve yields and energy output per unit of land. This research proposes an Agrivoltaic food and energy coproduction architecture that optimizes power generation while maintaining crop productivity by implementing ideal anti-tracking during critical growth periods. This technology offers a viable pathway for widespread solar implementation throughout the contiguous United States.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Han Shao, Rui Henriques, Hugo Morais, Elisabetta Tedeschi
Summary: The integration of offshore wind energy into the electric grid provides opportunities in terms of environmental sustainability and cost efficiency, but poses challenges to power quality. This survey offers a deeper understanding of disturbance detection and classification tools, exploring root causes, disturbance locations, and algorithmic solutions. It highlights synchronized waveform measurement and discusses evaluation metrics for detection and classification algorithms. Additionally, a novel system-wide monitoring framework is proposed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Eleni Davidson, Yair Schwartz, Joe Williams, Dejan Mumovic
Summary: A continued upward trend in global greenhouse gas emissions poses risks to global infrastructure and built assets. Maintaining high indoor environmental quality standards is a challenge for higher education institutions under future climates. Passive cooling mechanisms may be insufficient to tolerate predicted temperature increases. Different building typologies have varying energy demand projections.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Kexin Pang, Jian Zhou, Stamatis Tsianikas, David W. Coit, Yizhong Ma
Summary: This study proposes a new framework for long-term microgrid expansion planning, using deep reinforcement learning method to consider various uncertainties and constraints. The framework aims to enhance the effectiveness of microgrid expansion planning from the perspectives of economy, resilience, and greenhouse gas emission reduction.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Jun Zhao, Kangyin Dong, Xiucheng Dong
Summary: The continuous growth of global electricity penetration has provided modern energy for alleviating energy poverty, but its impact on carbon neutrality has been overlooked. The research reveals that clean electricity from traditional fossil energy and renewable energy has a positive influence on the greenhouse effect. Eradicating energy poverty can effectively alleviate the greenhouse effect, especially in non-Belt and Road Initiative (B&RI) nations.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Hossein Shahbeik, Hamed Kazemi Shariat Panahi, Mona Dehhaghi, Gilles J. Guillemin, Alireza Fallahi, Homa Hosseinzadeh-Bandbafha, Hamid Amiri, Mohammad Rehan, Deepak Raikwar, Hannes Latine, Bruno Pandalone, Benyamin Khoshnevisan, Christian Sonne, Luigi Vaccaro, Abdul-Sattar Nizami, Vijai Kumar Gupta, Su Shiung Lam, Junting Pan, Rafael Luque, Bert Sels, Wanxi Peng, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: This review explores the production of biocrude oil from biomass feedstocks through the process of hydrothermal liquefaction (HTL). It discusses the impact of process parameters on the quality, quantity, cost, and environmental impacts of biofuels. The review also highlights the challenges and prospects for the future development of biocrude oil.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Meysam Majidi Nezhad, Mehdi Neshat, Georgios Sylaios, Davide Astiaso Garcia
Summary: Digital twins promise innovation for the marine renewable energy sector by using modern technological advances and the existing maritime knowledge frameworks. This research presents critical aspects of digital twin implementation challenges in marine energy digitalization approaches that use and combine data systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Yeganeh Sharifian, Hamdi Abdi
Summary: This paper discusses the background and objectives of the multi-area economic dispatch problem, as well as various techniques and methods applied in this field. It also covers comprehensive formulations of the problem and important issues in the field of probabilistic MAED, along with some related concepts and suggestions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
J. G. B. Churchill, V. B. Borugadda, A. K. Dalai
Summary: The increasing global energy demand and the need to reduce fossil fuel reliance have created a demand for renewable and sustainable fuel sources. This review explores the potential of tall oil, a by-product of the pulping industry, as a feedstock for biofuels. The review provides an overview of tall oil production, purification, and treatment, and investigates recent trends and barriers towards tall oil-derived biofuels.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
David C. Broadstock, Xiangnan Wang
Summary: This study provides a general review of research on district cooling, identifying key topics and themes and highlighting potential research priorities for future studies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
L. Scharnhorst, D. Sloot, N. Lehmann, A. Ardone, W. Fichtner
Summary: This study investigates and analyzes the barriers to demand response in industrial and commercial sectors, highlighting their significance. Concerns about diminished product quality, disruptions to production processes, human resource management, and revenue uncertainty are identified as the most frequently cited barriers. Overcoming these barriers requires bridging knowledge gaps, allocating sufficient resources, and adapting external incentives and policies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Tong Feng, Yuechi Sun, Yating Shi, Jie Ma, Chunmei Feng, Zhenni Chen
Summary: Air pollution is a significant global challenge, and policymakers have implemented policies to reduce it. Evaluating the effectiveness of these policies is critical, and our study reveals trends and gaps in air pollution policy research. We found that research has shifted from focusing solely on air pollutants to including methodologies, policies, and health implications. China has emerged as a major contributor in this field of research.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
