Article
Multidisciplinary Sciences
Mohamed Mahran Kasem
Summary: This study presents a novel multi-objective optimization model for the design optimization of PTCs, with thermal and exergetic efficiencies being the primary performance indicators. The optimization model effectively maximizes both thermal and exergetic efficiencies, with water and helium achieving the highest optimal values, respectively.
SCIENTIFIC REPORTS
(2022)
Article
Green & Sustainable Science & Technology
Oveepsa Chakraborty, Sujit Roy, Biplab Das, Rajat Gupta
Summary: The study finds that a parabolic solar trough collector with a helical absorber tube performs better in terms of heat transfer rate, efficiency, and exergy efficiency compared to traditional collectors with smooth absorber tubes. The presence of a helical absorber tube increases the net surface area of the absorber, leading to a significant enhancement in useful heat transfer rate. Overall efficiencies are 3.5%-10% higher for the helical absorber tube based PTC, showing the advantages of this design over the traditional smooth absorber tube design.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Xuhang Shi, Xuyi Zhao, Fuqiang Wang, Ziming Cheng, Yan Dong, Jie Xu
Summary: This study investigates the impact of using a helically convex tube as the absorber tube of the parabolic trough collector on heat transfer and flow performance. By designing the helically convex structure, the overall heat transfer performance of the parabolic trough receiver is improved by up to 34%.
APPLIED THERMAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Sanaz Akbarzadeh, Mohammad Sadegh Valipour
Summary: This experimental study investigated the effects of corrugated tubes at different pitch ratios on the performance of parabolic trough collectors (PTCs). The results showed that PTCs using corrugated tubes had the highest performance in the transitional regime, with a maximum Nusselt number increase of 4.2 and a thermal performance factor increase of 26%-176%.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Green & Sustainable Science & Technology
Mojtaba Bezaatpour, Hadi Rostamzadeh, Javad Bezaatpour
Summary: A new hybrid method using a rotary absorber tube and magnetic field inducer with nanofluid can improve the performance of parabolic trough solar collectors. Results show that there is an optimal rotational speed and magnetic field intensity for maximizing energetic and exergetic efficiencies of the system.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Ramalingam Venkatesaperumal, Kutbudeen Syed Jafar, Perumal Venkatesan Elumalai, Mohamed Abbas, Erdem Cuce, Saboor Shaik, Chanduveetil Ahamed Saleel
Summary: This study implemented a novel design idea by introducing a corrugated tube absorber and conical strip inserts in a solar parabolic trough collector, aiming to enhance the heat transfer characteristics of the working fluid passing through the absorber.
Article
Thermodynamics
P. Ferrer, Khaled Mohamad, M. C. Cyulinyana, Victor Kaluba
Summary: In this article, design approaches to a receiver enclosed in an opaque cavity and heated by a solar parabolic trough collector are discussed. The optimization of the interaction between the cavity receiver and the solar radiation from a collector mirror is explored, which differs from conventional receivers and is essential for utilizing the benefits of using a cavity sleeve. Through simulations, different focal plane positions and the relative sizes of the receiver elements are investigated, and a focal plane close to the surface of the absorber pipe is found to have the highest efficiency at 62%. An experimental cavity receiver and parabolic trough system are then built based on the simulations, and the simulation results are validated against measured data with a maximum discrepancy of 8%. A novel method using the cooling behavior of the receiver is also applied to confirm the physical parameters through simulations.
APPLIED THERMAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Hossein Amiri, Mohammad Aminy, Marzieh Lotfi, Behzad Jafarbeglo
Summary: By developing a theoretical model and comparing it with experimental results, the study demonstrates the performance differences of the new solar still in different seasons, with a yield of over 55% higher in summer compared to winter.
Article
Green & Sustainable Science & Technology
Amir Mohammad Norouzi, Majid Siavashi, Rouhollah Ahmadi, Milad Tahmasbi
Summary: The study shows that in parabolic trough solar collectors, selecting the appropriate rotational speed of the absorber tube can significantly reduce temperature differences and maximum surface temperature, while increasing efficiency by approximately 17%. The Ta/Re ratio and CEP play crucial roles in predicting the optimal efficiency.
Article
Energy & Fuels
Qiliang Wang, Yao Yao, Zhicheng Shen, Hongxing Yang
Summary: A novel parabolic trough collector-photovoltaic (PTC-PV) system is proposed to enhance the thermal performance and solar utilization efficiency. Mathematical models are established and experiments are conducted to validate the superior performance of the hybrid PTC-PV system.
Article
Green & Sustainable Science & Technology
Ashok Kumar Singh, Samsher
Summary: This paper examines an eco-design criterion for a novel solar desaltification setup and proposes a modified combination of parabolic concentrator to improve its performance. The results show significant improvements in temperature, energy efficiency, and cost.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Engineering, Chemical
Elumalai Vengadesan, Siddik Thameenansari, Ella Jaganathan Manikandan, Ramalingam Senthil
Summary: The design of the solar receiver is crucial for converting solar radiation into heat transfer fluids. The use of a rectangular channel receiver with dual-functional fins as an alternative receiver shows potential in increasing heat transfer area and fluid flow path efficiency.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Green & Sustainable Science & Technology
Natraj, K. S. Reddy
Summary: Solar parabolic trough collectors are a mature technology, but improvements in structural stability and accuracy of reflectors and receivers are necessary. This study investigates the combined effect of thermo-structural instability on collector performance. Results show a decrease in optical efficiency and significant loss due to bending and deflection in the reflector and receiver. This research will benefit the design and monitoring of trough collectors.
Article
Thermodynamics
Ali Akbar Abbasian Arani, Farhad Monfaredi
Summary: This study focuses on designing an efficient parabolic trough solar collector filled with nanofluid using the finite volume method, and comparing the numerical results using single-phase and two-phase mixture models. The research shows that the novel PTSC with nanofluid has higher heat transfer performance and energy efficiency, with TPM simulation resulting in higher Nusselt numbers for both conventional and novel PTSCs.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Energy & Fuels
Olusola Bamisile, Dongsheng Cai, Humphrey Adun, Michael Adedeji, Mustafa Dagbasi, Ferdinard Dika, Qi Huang
Summary: The mixture of nanoparticles with base fluid for heat transfer fluid's performance enhancement has been widely studied, and this paper presents a detailed parametric comparison of mono/hybrid nanofluids with other fluids' applications in solar thermal collectors. The results show that nanofluids have better performance in flat plate collectors and parabolic trough collectors, and working fluids with higher temperature output have lower energy efficiencies and useful energy output.
Article
Thermodynamics
Farah Mehdaoui, Majdi Hazami, Anis Messaouda, AmenAllah Guizani
APPLIED THERMAL ENGINEERING
(2020)
Article
Energy & Fuels
Anis Messaouda, Majdi Hazami, Farah Mehdaoui, Mohamed Hamdi, Marco Noro, Renato Lazzarin, AmenAllah Guizani
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Thermodynamics
Anis Messaouda, Mohamed Hamdi, Majdi Hazami, Amen Allah Guizani
APPLIED THERMAL ENGINEERING
(2020)
Article
Thermodynamics
Afifa Riahi, Abdessalem Ben Haj Ali, Abdelhamid Fadhel, Amenallah Guizani, Moncef Balghouthi
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Green & Sustainable Science & Technology
Zaineb Azaizia, Sami Kooli, Ilhem Hamdi, Wissem Elkhal, Amen Allah Guizani
Article
Physics, Multidisciplinary
Hafedh Belmabrouk, Houssem Rezgui, Faouzi Nasri, Mohamed Fadhel Ben Aissa, Amen Allah Guizani
EUROPEAN PHYSICAL JOURNAL PLUS
(2020)
Article
Chemistry, Physical
Afifa Riahi, Saleh Khamlich, Moncef Balghouthi, Touria Khamliche, Terence Brian Doyle, Wissem Dimassi, Amenallah Guizani, Malik Maaza
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Physics, Applied
Houssem Rezgui, Faouzi Nasri, Giovanni Nastasi, Mohamed Fadhel Ben Aissa, Salah Rahmouni, Vittorio Romano, Hafedh Belmabrouk, Amen Allah Guizani
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Physics, Condensed Matter
Faouzi Nasri, Hichem Guedri, Mohamed Fadhel Ben Aissa, Youssef Trabelsi, Nejeh Jaba, Hafedh Belmabrouk, Mohamed Atri
Summary: This study numerically investigates the quasi-ballistic transport behavior in 20 nm FinFET transistors, demonstrating that the proposed model can predict experimental results well and provide an improved approximation compared to traditional models. The error in comparison with experimental and numerical works is less than 10% in both IDS-VGS and T-t characteristics.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Thermodynamics
Houssem Rezgui, Faouzi Nasri, Mohamed Fadhel Ben Aissa, Amen Allah Guizani
Summary: This paper investigates the significance and methods of thermal management applications in carbon nanotube field-effect transistors (CNTFETs) using a phonon hydrodynamic model and finite element method to study nanoscale heat transport within sub-10nm CNTFETs. The results suggest that increasing specular phonon reflection inside the channel region and enhancing the thermal conductivity of CNTs are effective ways to improve heat propagation and dissipation.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Proceedings Paper
Energy & Fuels
Daniel Benitez, Sofiane Bouaichaoui, Andreas Kazantzidis, Abdessalem Ben Haj Ali, Moncef Balghouthi, AmenAllah Guizani, Ahmed Al-Salaymeh
2019 10TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2019)
Proceedings Paper
Energy & Fuels
Fathia Eddhibi, Mahmoud Ben Amara, Moncef Balghouthi, AmenAllah Guizani
2019 10TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2019)
Proceedings Paper
Energy & Fuels
Karima Ghazouani, Safa Skouri, Salwa Bouadila, AmenAllah Guizani
2019 10TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2019)
Proceedings Paper
Energy & Fuels
Afifa Riahi, Abdessalem Ben Haj Ali, Amenallah Guizani, Moncef Balghouthi
2019 10TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2019)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
