Article
Engineering, Chemical
P. Ganesh Kumar, N. Thangapandian, V. S. Vigneswaran, S. Vinothkumar, B. Mouli Prasanth, Sung Chul Kim
Summary: The study investigates the effects of shot peening on heat transfer, exergy analysis, and pressure drop in a heat exchanger. The results show that nanofluids can significantly enhance the heat transfer performance and exergy efficiency of the heat exchanger.
Article
Green & Sustainable Science & Technology
T. Zhang, Y. F. Zhang, Z. R. Shi, Q. F. Li, J. Y. Cai
Summary: A hybrid PV/T collector/evaporator was designed and a hybrid system named PV-SAHP/GHP was proposed. Outdoor experiments were conducted to compare the operating characteristics of different modes. The results showed that the GHP-PV/T mode had satisfactory energy-saving effect while the PV-SAHP mode met the temperature demand but had unsatisfactory energy conservation effect. It is recommended to operate the GHP-PV/T mode during intense radiation and the PV-SAHP mode otherwise to balance the thermal performance and energy-saving benefits.
Article
Thermodynamics
Sajjad Safarzadeh, Milad Yousefi, Mahdi Kazemi, Ali Kianifar
Summary: Common phase change materials (PCMs) suffer from low thermal conductivity, which leads to a time-consuming phase change process and decreased performance of thermal storage units. This paper focuses on improving energy and exergy performance using an air-PCM heat exchanger for free cooling of buildings. The experiments show that adding multi-wall carbon nanotube nanoparticles to the PCM enhances thermal conductivity, reducing melting and solidification periods. During the charging process, the highest exergy and energy efficiencies are achieved with 0.5 mass% nano-PCM. Economic analysis reveals that the invested capital expenditures will be recovered in the ninth year under cold climate conditions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Tao Zhang, Yufan Zhang, Zhengrong Shi, Gang Pei, Jingyong Cai
Summary: Integrating passive and active heat transfer means in PV/T applications can solve freezing and corroding problems. The switching time of the hybrid system is rarely reported. A numerical model was developed to investigate the switching times based on thermal and exergy efficiency. The results indicate that the hybrid system needs to switch between modes based on efficiency criteria.
Review
Thermodynamics
M. M. Rashidi, Ibrahim Mahariq, Mohammad Alhuyi Nazari, Oussama Accouche, Muhammad Mubashir Bhatti
Summary: This article comprehensively reviews and discusses studies on entropy generation and exergy analysis of shell and tube heat exchangers, finding that modifying the thermo-physical properties of the fluids can improve efficiency, and the operating conditions of the heat exchangers play a crucial role in entropy generation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Tianxiang Hu, Trevor Hocksun Kwan, Honglun Yang, Lijun Wu, Weixin Liu, Qiliang Wang, Gang Pei
Summary: It is a great challenge for concentrated solar thermal technology to maximize the use of solar energy due to heat loss. This study employs solar spectrum splitting technology to enhance absorption and conversion of solar radiation. The beam-splitting photothermal system shows excellent performance, with a stable exergy efficiency improvement ratio of around 9% at a splitting wavelength of 1300 nm.
Article
Energy & Fuels
Mert Temiz, Ibrahim Dincer
Summary: In this study, a solar-based integrated system is designed to meet the energy and commodity demands of emerging countries sustainably. The system utilizes solar energy and integrates various technologies to provide electricity, freshwater, and hydrogen, while storing energy using a hydrogen-based system. The proposed system performs well in a case study, as determined through a transient analysis.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
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
Chemistry, Physical
S. Bharath Subramaniam, Ramalingam Senthil
Summary: The experiment focused on a concentrated solar absorber with finned phase change materials, utilizing a Scheffler type parabolic dish concentrator. Integration of cylindrical PCM containers resulted in enhanced heat transfer augmentation and higher energy and exergy efficiency in the parabolic dish collector. The optimized solar absorber could be applied in various fields such as steam generation, biomass gasification, space heating, and hydrogen generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Haifei Chen, Guiqiang Li, Yang Zhong, Yunjie Wang, Baorui Cai, Jie Yang, Ali Badiei, Yang Zhang
Summary: By analyzing the temperature distribution cloud image of the solar cell, it was found that the temperature distribution was uneven and there was a large temperature gradient, requiring a dual inlet model. The simulation results were consistent with the experimental results, showing that increasing inlet flow can improve system efficiency and provide better heat output.
Article
Thermodynamics
B. Saleh, L. Syam Sundar
Summary: The experimental study on nickel/water nanofluids flow in a corrugated plate heat exchanger shows significant improvements in overall heat transfer performance with increasing nanoparticle loadings and Reynolds numbers, but this enhancement is accompanied by an increase in friction factor and pumping power.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Environmental Sciences
Elumalai Vengadesan, Ramalingam Senthil
Summary: This study investigates the effects of single-slit twisted tape, double-slit twisted tape, and double-slit straight tape passive-insert devices on the heat transfer of a flat plate solar collector. The results show that the double-slit inserts enhance the convective heat transfer coefficient and improve energy and exergy efficiency compared to conventional collectors without flow inserts.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Safak Atas, Ilhan Ceylan, Osman Egemen Timar
Summary: The aim of this study was to enhance the efficiency of heat pump systems commonly used for heating in winter. A combined system was created by integrating the heat pump system, solar air collectors, and a heat recovery device. The utilization of these systems together prevented the decrease in energy efficiency that may occur over the course of a day and improved their overall efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Tudor Baracu, Monica Patrascu, Catalin Teodosiu, Marius-Victor Birsan, Adina Gheorghian, Constantin Streche, Romeo Bosneagu, Claudiu Babis, Claudia Ionita, Viorel Bogdan Radoiu, Sorina Costinas, Liviu Stan, Calin Mesteru, Florian Vladulescu, Gerardo Collaguazo Galeano
Summary: This paper introduces a new general formulation of radiation exergy and exergy efficiency for photovoltaic panels as grey surface absorbers, as well as an analytic method for designing hybrid solar collectors using matrix formalism. The proposed GS model shows higher exergy efficiency for grey surfaces, is able to determine thermal radiation losses, and includes a sensitivity analysis of thickness.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
B. Kalidasan, Subramaniyan Chinnasamy, A. K. Pandey, Muhammed A. Hassan, Kamal Sharma
Summary: The performance of a low-cost solar box cooker was investigated by adding fins to the cooking utensils. Different configurations of water-based cooking boxes were evaluated, and it was found that the use of fins improved cooking power and energy efficiency. The solar box cooker with hexagonal fins yielded the best results.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Ekrem Tuncbilek, Muslum Arici, Salwa Bouadila, Surjamanto Wonorahardjo
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2020)
Article
Green & Sustainable Science & Technology
Rim Ben Ali, Salwa Bouadila, Abdelkader Mami
Article
Green & Sustainable Science & Technology
Mariem Lazaar, Hassen Boughanmi, Salwa Bouadila, Mohamed Jarraya
Summary: The study proposed a solar pasteurization system for small productions collection centers to minimize rejected milk during transportation. Both numerical and experimental studies were conducted to evaluate the heat transfer behavior of the plate heat exchanger (PHE). Results showed that the global heat transfer coefficient of PHE increased with hot fluid flow.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Green & Sustainable Science & Technology
Hela Ben Amara, Salwa Bouadila, Hicham Fatnassi, Muslum Arici, Amen Allah Guizani
Summary: The study investigated the impact of shading by south oriented photovoltaic panels on climate and plant activities in a greenhouse, showing that PV-equipped greenhouses provide more favorable conditions during summer. Results can be valuable for farmers in the Mediterranean region and the payback period of PV systems was found to be less than 6 years.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Green & Sustainable Science & Technology
Rim Ben Ali, Salwa Bouadila, Muslum Arici, Abdelkader Mami
Summary: This study establishes a controllable innovative dynamic model for Insulated Greenhouses, optimizes the microclimate using a Fuzzy Logic Controller, and proposes a Wind Turbine System to cover the power needs of the greenhouse.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Rim Ben Ali, Souha Bousselmi, Salwa Bouadila, Muslum Arici, Abdelkader Mami
Summary: This article presents a Hybrid Power System that combines a Wind Turbine System with a battery bank, controlled by a power supervisory to reduce energy loss. The study finds that the system can meet the required power under different climatic conditions, with higher wind speeds resulting in higher power generation. The effectiveness of the supervisory control is also demonstrated.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Green & Sustainable Science & Technology
Salwa Bouadila, Sara Baddadi, Tauseef-ur Rehman, Rabeb Ayed
Summary: This study explores the improvement of efficiency in evacuated tube solar collectors through the addition of reflectors and thermal storage units. The performance of different designs in various regions of Tunisia is evaluated, and an energy balance model is established. Future research directions are also recommended.
Article
Thermodynamics
Salwa Bouadila, Sara Baddadi, Safa Skouri, Rabeb Ayed
Summary: This study explores the supply of heating and cooling for a soilless vertical farming system in an intensive and sheltered fodder production system. A dynamic modeling and experimental approach is used to examine the thermo-energetic setting of the hydroponic greenhouse. The results show that the system effectively increases nighttime temperature, controls temperature changes, and improves plant growth and yield.
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)
Review
Environmental Sciences
Laxmikant D. Jathar, S. Ganesan, Umesh Awasarmol, Keval Nikam, Kiran Shahapurkar, Manzoore Elahi M. Soudagar, H. Fayaz, A. S. El-Shafay, M. A. Kalam, Salwa Bouadila, Sara Baddadi, Vineet Tirth, Abdul Sattar Nizami, Su Shiung Lam, Mohammad Rehan
Summary: Solar photovoltaic technology has experienced significant growth in the renewable energy sector. The performance of a PV system is influenced by various parameters, both internal and external. It is important to recognize and monitor these parameters to optimize the performance and lifespan of the PV module.
ENVIRONMENTAL POLLUTION
(2023)
Article
Construction & Building Technology
Rabeb Ayed, Salwa Bouadila, Safa Skouri, Laura Boquera, Luisa F. Cabeza, Mariem Lazaar
Summary: By enhancing the thermal properties of cement-based building materials with textile fibers, energy consumption and CO2 emissions related to space conditioning in buildings can be reduced. This study produced lightweight coating mortars by partially replacing sand with textile waste and characterized the mechanical and thermal properties of the reinforced cementitious composites. The results showed that the thermal conductivity decreased with increasing proportion of reinforcing material. The application of these thermally improved mortars as coating mortars appears to be a relevant solution to enhance the thermal performance of buildings.
Article
Thermodynamics
Sara Baddadi, Safa Skouri, Rabeb Ayed, Laxmikant Jathar, Salwa Bouadila
Summary: This study compares the performance of four solar collectors in an indirect forced convection solar dryer and finds that a pioneering heating unit increases the temperature by 30 degrees Celsius compared to other collectors. The heating unit has an annual energy consumption of 640 kWh/year and an energy payback period of 2.5 years, while reducing CO2 emissions by 39 tons.
APPLIED THERMAL ENGINEERING
(2023)
Article
Construction & Building Technology
Rabeb Ayed, Amira Dellagi, Safa Skouri, Sara Baddadi, Salwa Bouadila, Mariem Lazaar
Summary: Recycling waste into construction materials is an effective solution to address energy shortage and environmental pollution. This study focused on incorporating textile waste in cement blocks to improve the microclimate of greenhouses. The results showed that the hydroponic greenhouse built with textile-reinforced cement blocks had better thermal performance than the one made with Plexiglas, but thermal-panel greenhouses still performed the best. An economic analysis revealed that the payback period for the hydroponic greenhouse with textile-reinforced cement blocks was 1.3 years shorter than the one with thermal insulation. Overall, this research highlights the benefits of recycling textiles for construction insulation materials and presents an efficient and environmentally friendly approach to improve the microclimate of hydroponic greenhouses.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Thermodynamics
Salwa Bouadila, Sara Baddadi, Rim Ben Ali, Rabeb Ayed, Safa Skouri
Summary: This article presents an innovative approach to creating a high-efficiency photovoltaic hydroponic greenhouse that functions as a zero-energy housing. Through simulations and experiments, valuable information is obtained regarding the performance and control strategies, which can be used for optimization. The economic analysis also highlights the potential financial benefits of this system. The study concludes that the photovoltaic system covers the heat demand for the majority of operating hours and can even provide excess energy to the grid.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Proceedings Paper
Energy & Fuels
H. Ben Amara, S. Bouadila, Amenallah Guizani, H. Fatnassi
2020 11TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2020)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)
