Article
Construction & Building Technology
Khushbu Mankani, Hassam Nasarullah Chaudhry, John Kaiser Calautit
Summary: This study analyzes the cooling performance of air-cooled heat sinks for the climate of Dubai, UAE, and improves the feasibility of photovoltaic technology by optimizing the temperature of solar panels.
ENERGY AND BUILDINGS
(2022)
Article
Thermodynamics
H. A. Refaey, M. A. Abdelrahman, Mathkar A. Alharthi, Samir Bendoukha, Said Ghani Khan, Mohamed Emam
Summary: In this study, an experimental setup in Saudi Arabia's hot weather conditions was used to evaluate the electrical and thermal performance of concentrator photovoltaic triple junction (CPV TJ) cells fed through various Fresnel lenses with concentration ratios ranging from 30.5 to 109 suns. The results showed that the temperature and power production of the cells increased with the solar concentration ratio, while the efficiency decreased. The use of a heat sink was found to reduce the cell temperature and improve heat uniformity. The larger heat sink performed better, maintaining lower cell operating temperatures and providing higher electric outputs at different concentration ratios.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Noor Alam, Mohammed Salman Ali, Syed Sajid, Deepak Sharma, Zahir Hasan
Summary: Solar thermoelectric refrigerators utilize the cold side of thermoelectric modules for refrigeration and dissipate heat from the hot side using heat sinks and fans. The experimental results show good performance, making them suitable for domestic and medicine storage in remote areas.
Article
Thermodynamics
Muhammad Ibrahim, Abdallah S. Berrouk, Ebrahem A. Algehyne, Tareq Saeed, Yu-Ming Chu
Summary: This study conducted an exergy analysis on a novel heat sink with nanofluid stream of alumina water, revealing that increasing Reynolds number decreases the maximum and average temperature of the heat sink. This decrease is also observed with the addition of nanoparticles. Furthermore, increasing Reynolds number and volume percentage of nanoparticles result in lower output temperature values.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Engineering, Multidisciplinary
Fahad Al-Amri, Taher S. Maatallah, Omar F. Al-Amri, Sajid Ali, Sadaqat Ali, Ijlal Shahrukh Ateeq, Richu Zachariah, Tarek S. Kayed
Summary: This study presents a unique experimental investigation in the thermal management and cooling realms of Photovoltaic (PV) panels under harsh environmental conditions. The performance of heat sink and thermal storage heat sink techniques, as well as the efficacy of immersion and coolant thermal properties, were evaluated and analyzed. The results indicate that heat sink-based PV panel configuration outperforms PCM heat sink-based configuration, but still fails to withstand severe mechanical and electrical degradation challenges in the harsh climate of Saudi Arabia. For actively cooled Photovoltaic Thermal (PVT) collectors, the immersion technique provides better heat dissipation uniformity and protection against hot spot apparatuses.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Huawei Wang, Pengfei Bai, Ruipeng Cai, Yuhao Luo, Xingliang Chen, Shixiao Li, Guodong Wu, Yifan Tang, Guofu Zhou
Summary: The hybrid vapor chamber heat sink (HVCHS) incorporates phase change and single-phase heat transfer in a single device, providing high cooling capacity of 1200 W and maintaining a maximum junction temperature of 95.25 degrees C with great temperature uniformity. It has a minimum thermal resistance of 0.04 degrees C/W, minimum pressure drop of 4.83 kPa, and cooling COP above 12,500 for heat inputs of more than 850 W, showing great potential for energy-saving cooling management of high-performance electronics.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Omar Ketfi, Hamid Abdi, Billel Lounici, Mahmoud Bourouis
Summary: This study investigates the use of a geothermal heat-sink for removing heat from single and double-effect water-LiBr absorption chillers in hot climates. The results show that both absorption chillers can operate steadily with the implementation of an underground heat-exchanger, providing cooling at inlet temperatures of 33 degrees C. The maximum coefficient of performance achieved is 0.76 and 1.25 for single- and double-effect absorption cycles, respectively, with chilled water at 7 degrees C. The required length of the underground-tube ranges from 4.5 to 18 m, depending on the system configuration and chilled water temperature.
Article
Thermodynamics
Tayfun Erkinaci, Fethiye Coskun, Aykut Cotur, Recep Onler, Mustafa Fazil Serincan
Summary: The power density and heat dissipation requirements have increased for electronic devices due to miniaturization. The compact vapor compression refrigeration (VCR) system proves to be an excellent solution for thermal management in harsh conditions, aligning well with the requirements of modern aircraft concepts.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Jiao Wang, Haichuan Jin, Hui Gao, Dongsheng Wen
Summary: The study proposes a method to increase the regenerative cooling capacity by considering both physical and chemical heat sinks, and effectively improves the cooling capacity of hydrocarbon fuels through optimization of working conditions, chemical kinetics, and chemical routes. By carefully analyzing the synergies among various factors, it is possible to achieve significant enhancements in heat management for hypersonic vehicles.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Ramesh Kumar, Francisco J. Montero, Tauseef-ur Rehman, Ravita Lamba, Manish Vashishtha, Sushant Upadhyaya
Summary: This study explores radiative cooling and heat sink as passive methods for thermal regulation in photovoltaic systems. A comprehensive two-dimensional model is developed and analyzed, and four different system configurations are compared. The results show that the photovoltaic + heat sink + radiative cooling system is the most efficient.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Electrical & Electronic
Jun Huang, Xingang Cong, Jianhui Zhang, Kai Li, Jiaming Liu, Quan Zhang
Summary: In this paper, a new type of piezoelectric heat exchanger was proposed and its performance was tested and analyzed. The results showed that the piezoelectric heat exchanger was able to effectively control the temperature of the CPU under extreme thermal load and had better heat exchange effect. This heat exchanger could play an important role in the field of heat exchange for electronic devices.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Energy & Fuels
Wei He, Su Ding, Jifang Zhang, Chenchen Pei, Zhiheng Zhang, Yulin Wang, Hailong Li
Summary: By using a water-cooled system and TRNSYS to optimize working conditions and analyze cooling energy consumption, the study aimed to guide cooling system design based on the results showing optimal cooling water parameters vary significantly depending on safety chip temperatures and thermal loads.
Article
Thermodynamics
Ying Wu, Ying Dai, Weiyi Xie, Haijun Chen, Yuezhao Zhu
Summary: This study conducts a performance analysis on the integration of post-combustion CO2 capture and solar energy in a coal-fired power plant. The results show that the integration of solar energy can significantly improve the electric efficiency and reduce costs. The use of absorption heat pump and absorption heat exchanger enables heat integration among the steam cycle, the CO2 capture process, and the solar energy system.
Article
Thermodynamics
A. Huicochea
Summary: The coupling of two absorption heat pumps, one conventional and one unconventional, allows for simultaneous cooling and heating using low-grade heat. This novel advanced absorption heat pump operates with three pressure levels to manipulate the temperature of useful heat. The system achieves cooling temperatures between 14 and 20 degrees C and heating temperatures between 80 and 106 degrees C, utilizing water/lithium bromide as the working solution.
Article
Engineering, Multidisciplinary
C. J. Ho, Jian-Kai Peng, Tien-Fu Yang, Saman Rashidi, Wei-Mon Yan
Summary: This study investigates the performance of a novel double-layer mini/micro-channel stacked heat sink, which reduces pressure loss compared to a single-layer micro-channel heat sink and improves uniformity index, leading to decreased operating costs.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Ruben Gil, Carlos Monne, Nuria Bernal, Mariano Munoz, Francisco Moreno
Article
Thermodynamics
J. Arroyo, F. Moreno, M. Munoz, C. Monne
ENERGY CONVERSION AND MANAGEMENT
(2015)
Article
Acoustics
Jorge Arroyo, Mariano Munoz, Francisco Moreno, Nuria Bernal, Carlos Monne
Article
Thermodynamics
C. Monne, S. Alonso, F. Palacin, L. Serra
APPLIED THERMAL ENGINEERING
(2011)
Article
Green & Sustainable Science & Technology
Y. Bravo, C. Monne, N. Bernal, M. Carvalho, F. Moreno, M. Munoz
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2014)
Article
Energy & Fuels
J. Arroyo, F. Moreno, M. Munoz, C. Monne, N. Bernal
Article
Chemistry, Physical
F. Moreno, M. Munoz, J. Arroyo, O. Magen, C. Monne, I. Suelves
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2012)
Article
Chemistry, Physical
F. Moreno, J. Arroyo, M. Munoz, C. Monne
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2012)
Article
Chemistry, Physical
J. Arroyo, F. Moreno, M. Munoz, C. Monne
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2013)
Article
Chemistry, Physical
S. de Llobet, J. L. Pinilla, R. Moliner, I. Suelves, J. Arroyo, F. Moreno, M. Munoz, C. Monne, I. Camean, A. Ramos, N. Cuesta, A. B. Garcia
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2013)
Article
Thermodynamics
C. Monne, S. Alonso, F. Palacin, J. Guallar
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
(2011)
Article
Energy & Fuels
Y. Bravo, M. Carvalho, L. M. Serra, C. Monne, S. Alonso, F. Moreno, M. Munoz
Article
Construction & Building Technology
Claudio Javier Garcia-Ballano, Ana Ruiz-Varona, Carlos Monne Bailo, Cristina Cabello Matud
Summary: This research evaluates the reliability of using geographic information system (GIS) methods for energy planning by monitoring a housing block in Zaragoza, Spain. The results indicate that the method offers objective criteria for determining priority areas for energy improvement in the city, making it a valuable planning tool for renovation activities.
ENERGY AND BUILDINGS
(2022)
Proceedings Paper
Green & Sustainable Science & Technology
Cristina Dueso, Jorge Arroyo, Francisco Moreno, Mariano Munoz, Carlos Monne, Ana Bautista, Noemi Gil-Lalaguna, Alberto Gonzalo, Jose Luis Sanchez
PAPERS OF THE 25TH EUROPEAN BIOMASS CONFERENCE
(2017)
Article
Energy & Fuels
Carlos Monne, Yolanda Bravo, Francisco Moreno, Mariano Munoz
INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING
(2014)
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.