About the Journal

Clean Energy Science and Technology (CEST, eISSN: 2972-4910) is an international open access peer-reviewed journal. The journal aims to publish high-quality, authoritative, and interdisciplinary insights in the form of original research article, review, commentary and more types in a wide range of fields, including biomass, solar energy, smart energy, wind and marine energy, hydrogen, the conversion and storage of clean energy, materials, equipment and safety, system optimisation, development and application, and clean energy policy , etc.

Journal Abbreviation:

Clean Energy Sci. Technol.

Announcements

Current Issue

Vol. 2 No. 4 (2024)
Published: 2024-12-31

Brief Report

  • Open Access

    Article ID: 261

    Green villages by Wind + Solar + Hydrogen

    by Kevin Kendall, Fellow of the Royal Society
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    409 Views, 57 PDF Downloads

    This paper describes 5 steps on the move to cost-effective green villages, powered mainly by Solar, Wind and Hydrogen. In Britain, there are around 6000 villages comprising almost half the total population. These village dwellers wish to reduce their expensive energy bills, achievable by profitably going green with local Wind and Solar generation of electricity plus Hydrogen energy storage. The first step is to measure the total energy usage in the village. This defines the size of the required renewable private wire energy installations. The second step calculates savings on grid bills for electricity, natural gas and petroleum transport products, to ensure rapid payback for the renewables to be installed. A third concern is the planning permission for Wind/Solar installations that may take months to approve. Perhaps the most important requirement is to attract investment in the fourth step. Finally, the fifth step is to procure and commission the equipment needed in the village to prove that local energy can beat the present centralized grid energy systems, using Hydrogen as the vital energy storage molecule to fill gaps in Wind/Solar supply.

Article

  • Open Access

    Article ID: 263

    Research progress of low-temperature plasma polishing technology in chip material processing

    by Hui Yan, Shuang Xue, Peiwen Guo, Jiale He, Guangning Wang, Yinlong Zeng, Longfei Qie, Ruixue Wang
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    81 Views, 58 PDF Downloads

    Low-temperature plasma polishing technology, by virtue of the plasma’s highly ionized characteristics, can accurately remove tiny defects and impurities on the surface of chip materials, improve the flatness and finish of chip materials, reduce mechanical damage and subsurface damage, and has a high material removal rate. This paper reviews the application status, advantages and limitations of plasma polishing technologies in the field of chip material processing. The principles and applications of plasma-assisted polishing, plasma chemical vaporization machining, plasma electrolytic processing-mechanical polishing and plasma assisted selective etching are specifically discussed, and their advantages and limitations are analyzed. Finally, the development of plasma chip-polishing technology is prospected, aiming to provide a useful reference for the continuous improvement of chip manufacturing processes and the future development of the microelectronics industry.

  • Open Access

    Article ID: 237

    Rotation-based heat transfer enhancement for shell-and-tube latent thermal energy storage systems: From mechanisms to applications

    by Zhi Li, Chengdong Fang, Qian Wu, Ruicheng Jiang, Xiaoli Yu
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    101 Views, 55 PDF Downloads

    Latent thermal energy storage (LTES) is an important energy storage technology to mitigate the discrepancy between energy source and energy supply, and it has great application prospects in many areas, such as solar energy utilization, geothermal energy utilization and electricity storage. However, LTES systems suffer from the low thermal conductivity of most phase-change materials (PCMs), threatening their large-scale commercial applications. To tackle this challenge, heat transfer enhancement for LTES systems is critically important and has been widely investigated worldwide. Convectional heat transfer enhancement techniques, including fins, nanoparticles and multiple PCMs, can significantly improve the charging and discharging rates of an LTES system. Recently, rotation-based methods have emerged to provide new routes for the heat transfer enhancement of LTES systems, and many achievements have been obtained by researchers around the world. This study conducted a short review of the mechanisms and applications of three rotation-based heat transfer enhancement methods, aiming to provide deep insights into these novel heat transfer enhancement methods and propel their future development and applications.

  • Open Access

    Article ID: 240

    A brief analysis of spectral technology for effective utilization of full spectrum of solar energy

    by Guiqing Yin, Xingyun Jia, Zhihao Miao, Rui Ni
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    191 Views, 177 PDF Downloads

    In this paper, a spectroscopic technology based on a trough-type parabolic condenser is proposed, which effectively utilizes the full spectrum of solar energy for light transmission through optical fibers. The technology comprises four parts, which are concentration, transmission, splitting, and detection, and its application in the field of clean energy was explored. A one-way glass is introduced into the installation as a device for light transmission restriction. The one-way transmittance of one-way glass effectively ensures the transmission direction of sunlight. According to the light simulation results from TracePro software, after the light was transmitted through the one-way glass reflection device, light intensity was guaranteed to meet usage requirements. After being focused by collimating lens and Fresnel lens, the light is introduced into a Roland circle spectroscopic system through an optical fiber. After splitting, various types of light passing through the detection system are introduced into their respective optical fibers for long-distance transmission and use. From the experiments, it was found that through reasonable splitting and the targeted use of different wavelength bands, the effective utilization of the full spectrum of solar energy significantly improved, verifying the feasibility of the device design idea.

  • Open Access

    Article ID: 218

    Solar energy utilization and conservation in an industrial solar drying process

    by Cortés Rodríguez Elizabeth, Ruiz Mercado Claudia Araceli
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    26 Views, 14 PDF Downloads

    Decarbonization in food production systems is one of the greatest challenges today. Solar drying is one of the processes that can help this energy transition and improve food production systems. This research presents the results of the development of a new solar drying technology with applicability in the food production system. A technoeconomic assessment was carried out. The best configuration for an integral drying system for various applications was obtained. The developed solar drying technology is portable, efficient, modular, versatile, continuous processing, with minimal degradation in the dehydrated product. According to the annualized cost method calculations, the cost of drying products with this technology is much lower than when using conventional energies and has a short payback period of 1–2 years. This research is the first part of the ongoing project. Improved equipment and various applications are in progress.

Review

  • Open Access

    Article ID: 253

    Intellectual property analysis of recycling technologies for spent power lithium-ion batteries

    by Yue Dong, Haochen Zhu, Wenzhi He, Guangming Li
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    47 Views, 35 PDF Downloads

    The rapid expansion and increasing adoption of electric vehicles have significantly amplified the demand for power batteries, making the recycling and treatment of spent power lithium-ion batteries a critical issue for environmental protection and resource conservation. Actively pursuing the development of eco-friendly recycling technologies and enhancing the regulatory frameworks governing the disposal of spent power lithium-ion batteries are concerns worldwide. This paper places a particular emphasis on the role of intellectual property protection in the advancement of spent power lithium-ion battery recycling technologies. By classifying the key technologies in the recycling process, reviewing recent policies and regulations, and conducting a comprehensive analysis of patent applications related to these technologies, this study applies intellectual property analysis to systematically investigate the global trends in technology development, the main technological players, and the key fields of innovation in spent power lithium-ion battery recycling over the past two decades. The findings underscore the crucial influence of intellectual property protection on fostering technological innovation and driving the global advancement of recycling technologies. Finally, the paper summarizes the technical characteristics, focal areas, challenges, and future prospects of spent power lithium-ion battery recycling technologies in the context of global energy transformation and sustainable development, providing strategic guidance for future industrialization, technological innovation, and research directions in this critical field.

  • Open Access

    Article ID: 192

    Role of energy value chain in carbon neutrality: A review

    by Zheng Luo, Xiaojie Lin, Yanling Wu, Wei Zhong
    Clean Energy Science and Technology, Vol.2, No.4, 2024;
    120 Views, 98 PDF Downloads

    Value chain analysis is an important tool for optimizing operations and decision-making in enterprises. As the concept of sustainable development gains recognition worldwide, research on value chains is increasingly focused on sustainability. Traditionally, energy management and value management have operated in parallel with limited intersections. However, after the 2015 Paris Agreement set the goal of achieving net-zero emissions, carbon management has become integral to national strategies, necessitating a re-evaluation of traditional value chains. In this paper, the “energy value chain” is introduced, a novel concept that integrates energy consumption with value creation and carbon emissions, emphasizing the coupling relationships among “energy flow”, “value flow”, and “carbon flow.” From a review of current value chains in the power, steel, petroleum, and transportation industries, the specific energy value chain for each industry is defined and its rationale and effectiveness are discussed. This integrated analytical method provides a strategic tool for industries or enterprises to optimize energy consumption, reduce carbon emissions, and enhance competitive advantage.

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