Clean Energy Science and Technology最新文献

High-performance proton exchange membrane employing water-insoluble hybrid formed by chemically bonding phosphotungstic acid with polydopamine 采用磷钨酸与多巴胺化学键合形成的水不溶性杂化物的高性能质子交换膜

Clean Energy Science and Technology Pub Date : 2024-05-07 DOI: 10.18686/cest.v2i2.138

Zhongrui Lu, Xiancan Yuan, Xiaoyang Jia, Jun Lin, S. He

引用次数: 0

Ultrafast-adsorption-kinetics molecular sieving of propylene from propane 丙烷制丙烯的超快吸附动力学分子筛分技术

Clean Energy Science and Technology Pub Date : 2024-03-20 DOI: 10.18686/cest.v2i2.126

Ruike Zhang, Jiong Zhou

引用次数: 0

A brief review of hydrogen production technologies 制氢技术简评

Clean Energy Science and Technology Pub Date : 2024-03-19 DOI: 10.18686/cest.v2i1.117

Yijun Zhang, Yiman Xiao, Siddig Abuelgasim, Chenlong Liu

引用次数: 0

Simulation and experimental research on the optimization of airflow organization and energy saving in data centers using air deflectors 利用空气导流板优化数据中心气流组织和节能的模拟与实验研究

Clean Energy Science and Technology Pub Date : 2024-03-05 DOI: 10.18686/cest.v2i1.141

Boyang Ma, Haiyong Liu, Yahui Du, Xiaochen Yang, Z. Zhou, Jie Lu, Ying Chen

{"title":"Simulation and experimental research on the optimization of airflow organization and energy saving in data centers using air deflectors","authors":"Boyang Ma, Haiyong Liu, Yahui Du, Xiaochen Yang, Z. Zhou, Jie Lu, Ying Chen","doi":"10.18686/cest.v2i1.141","DOIUrl":"https://doi.org/10.18686/cest.v2i1.141","url":null,"abstract":"The airflow organization of the data center directly affects the temperature control performance and the energy efficiency of the cooling equipment. The servers at the bottom of the rack usually suffer from insufficient airflow rate and poor cooling effect. This is because of the limited distance between the bottom servers and the perforated floor, and the small horizontal velocity of the supply air flow. This study aims to improve the uniformity of the cooling airflow in the vertical direction of the rack by the air deflectors, thereby further improving the overall airflow organization in the data center. The size and installation of the deflectors in the data center were optimized according to both the experiment and numerical simulation results. From the results, it is recommended to install the deflector with a width of 100 mm at an angle of 45° under the perforated floor for the rack with the single-side airflow supply. For the rack with the double-side airflow supply, the width of the deflector should be 100 mm and installed at an angle of 30° to the perforated floor to achieve the best airflow distribution. Consequently, the intake airflow rate for the bottom servers significantly increased, and the occurrence of the local hot spots was effectively reduced. The numerical simulation of the airflow organization with and without the deflector was conducted by ANSYS. The results show that, the installation of the deflectors increased the inlet airflow rate for the rack by 16.98% and improved the energy efficiency of the dater center air conditioners by 1.98%.","PeriodicalId":496532,"journal":{"name":"Clean Energy Science and Technology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140263521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in solid adsorbent materials for direct air capture of CO2 用于直接空气捕获二氧化碳的固体吸附材料的研究进展

Clean Energy Science and Technology Pub Date : 2023-12-12 DOI: 10.18686/cest.v1i2.95

Jianfei Zheng, Xiaoping Chen, Jiliang Ma

引用次数: 0

Dawn of clean energy: Enhanced heat transfer, radiative cooling, and firecracker-style controlled nuclear fusion power generation system 清洁能源的曙光:强化传热、辐射冷却和爆竹式可控核聚变发电系统

Clean Energy Science and Technology Pub Date : 2023-09-28 DOI: 10.18686/cest.v1i1.61

Weimin Yang, Enxiang Zhang, Jiuzhou Zhao, Yifan Zhao, Kangkang Tang, Yan Cui, Xianyu Luo, Zhen Zhang, Chengjun Li, Fenghua Zhang, Xiaodong Gao

{"title":"Dawn of clean energy: Enhanced heat transfer, radiative cooling, and firecracker-style controlled nuclear fusion power generation system","authors":"Weimin Yang, Enxiang Zhang, Jiuzhou Zhao, Yifan Zhao, Kangkang Tang, Yan Cui, Xianyu Luo, Zhen Zhang, Chengjun Li, Fenghua Zhang, Xiaodong Gao","doi":"10.18686/cest.v1i1.61","DOIUrl":"https://doi.org/10.18686/cest.v1i1.61","url":null,"abstract":"Global climate change has become a major environmental threat and development challenge facing humanity. Controllable nuclear fusion is a globally recognized ideal solution for clean energy, but its required high-energy triggering conditions and intense energy release prevent existing technologies from achieving safe, stable, and long-term continuous operation. Here, inspired by the traditional Chinese firecrackers, we propose a pulsed fusion reaction flywheel energy storage multi-reactor relay operation to drive the steam turbine to continuously and stably generate electricity for a long period of time; meanwhile, to install cleaning rotors in the cooling medium pipeline to enhance heat exchange, and to apply radiative cooling technology on the surface of the cooling tower to improve cooling efficiency and to reduce energy consumption, thereby improving system safety and overall energy efficiency. Proposing the combination of original technologies at both the hot end and the cold end of the system, we strive to open up a new way for controllable nuclear fusion power generation.","PeriodicalId":496532,"journal":{"name":"Clean Energy Science and Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135470294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experiments on near-field radiative heat transfer: A review 近场辐射换热实验研究进展

Clean Energy Science and Technology Pub Date : 2023-09-27 DOI: 10.18686/cest.v1i1.45

Jihong Zhang, Kezhang Shi, Lu Lu, Dudong Feng, Haotuo Liu, Xiaohu Wu

{"title":"Experiments on near-field radiative heat transfer: A review","authors":"Jihong Zhang, Kezhang Shi, Lu Lu, Dudong Feng, Haotuo Liu, Xiaohu Wu","doi":"10.18686/cest.v1i1.45","DOIUrl":"https://doi.org/10.18686/cest.v1i1.45","url":null,"abstract":"Near-field radiative heat transfer (NFRHT) has been demonstrated to exceed the blackbody limit due to the coupling effect of evanescent waves in the near-field regime, opening the door to application in active thermal control, thermophotovoltaics, and nanoscale imaging. Although the theoretical studies on NFRHT have been investigated exhaustively, the experimental measurement of NFRHT has been stagnant due to the challenges in controlling gap distance at the nanoscale. Remarkable progress has been greatly boosted until the 21st century to overcome the nanoscale controlling and measurement of NFRHT, benefiting from the advances of micro-nanofabrication techniques and materials science. This review examines an in-depth discussion of the experimental development of NFRHT. According to the structure of the emitter and receiver, the experimental devices are divided into three different categories: plate-to-plate structure, tip-to-plate structure, and sphere-to-plate structure. Existing experimental setups and methodology of NFRHT between metals, semiconductors, two-dimensional materials, and hyperbolic metamaterials are thoroughly explored and analyzed in detail. Finally, the remarks on outstanding challenges at the nanoscale and promising advances in applications are briefly concluded in the measurements of NFRHT.","PeriodicalId":496532,"journal":{"name":"Clean Energy Science and Technology","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135587211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent progress in carbon dioxide capture technologies: A review 二氧化碳捕集技术的最新进展

Clean Energy Science and Technology Pub Date : 2023-09-25 DOI: 10.18686/cest.v1i1.32

Guanchu Lu, Zhe Wang, Umair Hassan Bhatti, Xianfeng Fan

{"title":"Recent progress in carbon dioxide capture technologies: A review","authors":"Guanchu Lu, Zhe Wang, Umair Hassan Bhatti, Xianfeng Fan","doi":"10.18686/cest.v1i1.32","DOIUrl":"https://doi.org/10.18686/cest.v1i1.32","url":null,"abstract":"The continuous increase in anthropogenic CO2 emissions is widely acknowledged as one of the main reasons for global climate change. To address this issue, significant advancements have been made in developing CO2 capture and utilization technologies that offer new solutions for mitigating carbon emissions and promoting a carbon economy. In this review, we summarize the recent research progress in CO2 capture and separation technologies, including pre-combustion, post-combustion, oxy-fuel combustion, chemical looping combustion and calcium looping combustion. Among these technologies, post-combustion is seen as one of the most promising options for reducing CO2 emissions from existing power plants, as it can be easily integrated into existing facilities without requiring major modifications. Therefore, the second section of this article focuses on the various post-combustion processes and technologies, such as physical absorption, amine scrubbing, dual-alkali absorption, chilled ammonia, membrane separation, and solid adsorption, with a particular emphasis on most recent research reports. As amine-based chemical absorption is the most leading post-combustion CO2 capture technique, the third section summarizes the recent development in amine-based absorption technology by covering conventional and emerging types of absorbents such as single amine, blended amine, biphasic amine, and non-aqueous amine processes. The different liquid absorption-based process is compared in terms of regeneration energy consumption, CO2 intake capacity, and optimal operating conditions, and the comparison data is summarized in tables. A critical literature review and comparison of various techniques show that non-aqueous amine absorbents can be promising alternatives to the conventional monoethanolamine (MEA) process. The goal of this review is to provide strategies and perspectives for accelerating the further study and development of CCS technologies.","PeriodicalId":496532,"journal":{"name":"Clean Energy Science and Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135866841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimal design of stand-alone photovoltaic system based on battery storage system: A case study of Borj Cedria in Tunisia 基于电池储能的单机光伏系统优化设计——以突尼斯Borj Cedria为例

Clean Energy Science and Technology Pub Date : 2023-09-25 DOI: 10.18686/cest.v1i1.28

Safa Slouma, Wael Boulaares, Somnath Maity, Abdelmajid Jemni, Souheil El Alimi

{"title":"Optimal design of stand-alone photovoltaic system based on battery storage system: A case study of Borj Cedria in Tunisia","authors":"Safa Slouma, Wael Boulaares, Somnath Maity, Abdelmajid Jemni, Souheil El Alimi","doi":"10.18686/cest.v1i1.28","DOIUrl":"https://doi.org/10.18686/cest.v1i1.28","url":null,"abstract":"This work deals with the optimal design of a stand-alone photovoltaic system (SAPS) based on the battery storage system and assesses its technical performance by using PVsyst simulation. In fact, this study is carried out to determine the optimal orientation and tilt angle of a solar panel for collecting maximum solar radiation. Borj Cedria is taken as a case study site to perform the optimum tilt angle through PVsyst. PV-GIS is utilized to estimate global solar irradiance. The proposed system can produce 1314 kWh of energy for the load, which is considered technically suitable for this area thanks to a performance ratio of 58.3% and high specific efficiency generation, besides the solar fraction of about 92.5%. From an economic point of view, the SAPS can save more than 44,000 Dt per year by purchasing energy from the grid system, while considering the aspect of sustainability, 66.24 kg of CO2 annually can be avoided by utilizing the sun’s energy. Furthermore, efficient solar panel use requires its characteristics to be identified under various conditions. An original experimental setup is carried out in the LPV Lab to identify PV characteristics. Experimental and simulation results performed under PSIM software are in good agreement, which shows the experimental setup’s effectiveness.","PeriodicalId":496532,"journal":{"name":"Clean Energy Science and Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135866839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Redox flow battery technology development from the perspective of patent applications: A review 从专利申请的角度看氧化还原液流电池技术的发展

Clean Energy Science and Technology Pub Date : 2023-09-25 DOI: 10.18686/cest.v1i1.47

Wuyang Wang, Anle Mu, Bin Yang, Jiahui Wang, Yupeng Wang

{"title":"Redox flow battery technology development from the perspective of patent applications: A review","authors":"Wuyang Wang, Anle Mu, Bin Yang, Jiahui Wang, Yupeng Wang","doi":"10.18686/cest.v1i1.47","DOIUrl":"https://doi.org/10.18686/cest.v1i1.47","url":null,"abstract":"With the continuous increase in global energy consumption, the development and utilization of renewable energy become imperative. However, the intermittency and fluctuation of wind and solar power generation prevent direct grid integration, resulting in energy waste. As a large-scale electrochemical energy storage technology, redox flow batteries (RFBs) can effectively store renewable energy and smooth the power output. This paper summarizes the development history of RFBs technology in China by analyzing relevant patent application data, elaborates on the working principles, advantages and disadvantages of various RFBs, and their latest research progress. It analyzes the technical challenges in current RFBs research and presents the application prospects of RFBs commercialization. The results show that although RFBs technology has made significant progress in China, it still faces issues like high battery cost and limited cycle life. To realize the efficient utilization of renewable energy and green low-carbon development, RFBs technology needs continuous optimization and upgrade. This paper can provide references for the development of RFBs technology.","PeriodicalId":496532,"journal":{"name":"Clean Energy Science and Technology","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135866843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1