Study on moisture absorption and evaporation performance of dual-network hydrogels regulated by lithium chloride hygroscopic saltHe, Jiatian; Zhu, Qunzhi; Liu, Xin
doi: 10.1088/1742-6596/3018/1/012002pmid: N/A
In recent years, hygroscopic hydrogels have gained widespread application in atmospheric water harvesting (AWH) technologies. Sorbent materials, particularly those enabling atmospheric moisture capture, thermal energy storage, and passive cooling, represent promising candidates to address critical challenges associated with global water scarcity and energy transition. However, the large-scale deployment of such systems remains hindered by the reliance on unsustainable and costly sorbent materials. In this study, an innovative dual-network PSCL hydrogel was fabricated through a crosslinking-assisted vacuum freeze-drying methodology. This hydrogel demonstrates exceptional humidity regulation capabilities, achieving nocturnal atmospheric moisture adsorption followed by efficient solar-driven desorption during daylight. Systematic evaluations reveal that the PSCL hydrogel exhibits superior moisture adsorption and desorption capabilities across varying humidity levels. Remarkably, the hydrogel maintained structural integrity and performance stability over 12 consecutive adsorption-desorption cycles, demonstrating its potential for practical implementation in scalable atmospheric water harvesting systems. The integration of tailored porosity and photothermal responsiveness within the dual-network architecture provides a robust platform for optimizing water sorption kinetics and solar energy utilization efficiency. This work advances the development of sustainable hydrogel-based sorbents, offering a viable pathway to overcome the limitations of conventional materials in energy-efficient atmospheric water generation.
Preparation and application of cobalt-based compoundsLiu, Shuya; Fang, Xing; Chen, Songlin; Wang, Zhenli; Guo, Jing
doi: 10.1088/1742-6596/3018/1/012007pmid: N/A
Hydrogen is considered a promising renewable energy source due to its abundance, releases high heat, clean, and renewable. Water splitting is used as a strategy engineering for hydrogen production. The development of efficient electrocatalysts to reduce the overpotential of water splitting is the key to improving energy efficiency and hydrogen production rate. This study focuses on the reaction mechanism of water splitting, sticks to the essential structure-activity relationship, and emphasizes the design and optimization of electrocatalytic performance at the atomic scale. The related surface modification methods such as vacancy, doping, and interface are used to improve the performance of the electrocatalyst[1].
Impact factors of power emissions in low-carbon industrial parks: focusing on the full lifecycle carbon emissions of distributed pv systemsZhong, Bang; Li, Jin; Lu, Wensheng; Li, Ming; Tan, Zhihao
doi: 10.1088/1742-6596/3018/1/012018pmid: N/A
Given the significant contribution of industrial parks to China’s GDP and energy-related carbon emissions, the transition towards low-carbon development is crucial for achieving China’s Dual Carbon goals. Installation of distributed PV systems is an important and widely applied measure in industrial parks. The installation of distributed PV systems is identified as a key strategy for reducing carbon emissions, yet conventional carbon accounting often overlooks the emissions associated with the entire lifecycle of these systems. The paper employs a lifecycle carbon emission analysis based on the cradle-to-grave rule, covering energy and raw material obtaining, manufacturing, usage, and end-of-life treatment. It introduces the concept of levelized carbon emission of electricity generated by PV systems (LEEPV) and evaluates its impact on the emission from electricity consumption and its factor within industrial parks. An empirical analysis of a typical industrial park in Guangdong province has been conducted. The paper concludes that incorporating lifecycle emissions of PV systems into carbon emission calculations offers a more comprehensive perspective for allocating emission liability and supports the development of low-carbon industrial parks.
Numerical calculation and experimental study on fluidized airflow of circulating fluidized bed boilerCong, Richeng; Song, Jinliang; Li, Zhilei; Fu, Yu; Li, Cong; Zhang, Tao
doi: 10.1088/1742-6596/3018/1/012021pmid: N/A
The circulating fluidized bed boiler has problems with clogging of the return feeder and poor fluidization of the bed material after co-firing biomass fuel. The change in fluidized air volume directly reflects the fluidized state of the bed material in the return feeder, and the fluidized air volume cannot be accurately measured, which makes it difficult to detect blockages in the return feeder in a timely manner and has a certain lag. In order to achieve an accurate measurement of fluidized air volume, numerical calculation, and on-site experimental research methods were applied to study the measurement of air volume in the outlet duct of the fluidized fan based on the forced vortex theory. The pressure distribution law at the bend was obtained through numerical calculation, which is consistent with the forced eddy current theory. The variation between the flow rate and pressure difference is approximately linear. According to the forced vortex theory, the calculated total flow coefficient increases with the increase of flow rate at low flow rates. At high flow rates, the total flow correction coefficient remains unchanged, and the critical Reynolds number is between 1.15×105 and 1.31×105. Using the average flow coefficient method for coefficient correction can achieve a flow measurement deviation between 0.299% and 0.567%. On site experimental research has verified the accuracy of numerical calculation methods and the feasibility of using forced eddy current theory to measure flow rate. The measurement error obtained on site is between −0.57% and 0.77%, which meets the requirements of engineering applications. Compared with traditional flow measurement devices, its measurement results have a strong linear variation law and have certain engineering application prospects.
Optimization of integrated energy systems with hydrogen storage: incorporating experimentally validated partial load characteristics for enhanced renewable energy utilizationXiao, Zhiqin; Liu, Qingrong; Liang, Qingqing; Wu, Dan; Ruan, Yingjun; Qian, Fanyue; Xu, Tingting; Meng, Hua; Yao, Yuting
doi: 10.1088/1742-6596/3018/1/012013pmid: N/A
To address the challenges of renewable energy volatility and seasonality, this study proposes an optimization strategy for an integrated energy system (IES) centered on a hydrogen storage system (HSS). An experimental platform was developed to investigate the operational performance of a proton exchange membrane fuel cell (PEMFC) under varying load conditions. Experimental data validated the power generation and heat recovery efficiencies of PEMFC, revealing a close alignment with simulation models. These findings were incorporated into a Gurobi-based optimization framework to design a robust scheduling strategy. The proposed strategy synergistically coordinates renewable energy sources including photovoltaic (PV) and wind power (WP) with hydrogen storage, lithium batteries, and the PEMFC to improve system stability, enhance economic performance, and increase renewable energy utilization. Results demonstrate the effectiveness of the HSS in achieving peak-shaving, valley-filling, and efficient energy storage, addressing key limitations of renewable energy systems.
Investigation of phase change cooling within thermal control systems for lithium-ion batteriesLu, Zhangmin; Zhu, Qunzhi
doi: 10.1088/1742-6596/3018/1/012019pmid: N/A
During operation, lithium-ion batteries generate a significant amount of heat, leading to increased temperature and temperature gradients within the battery cluster. These conditions significantly impair the durability and safety of batteries, underscoring the necessity for a stable heat dissipation system to maintain optimal battery temperatures. The present work introduces a cost-efficient, passive heat dissipation system that integrates prismatic lithium-ion batteries with phase change material (PCM) components. Findings demonstrate that the PCM components effectively lower the highest temperature and reduce the largest temperature variation observed at the end of the discharge process, highlighting their exceptional thermal storage and regulation properties. Moreover, the impact of critical PCM design factors—such as thermal conductivity, melting temperature, and latent heat capacity—on the system’s thermal performance was analyzed. The research offers foundational insights and practical recommendations for designing and deploying passive, economical battery thermal management systems that leverage PCM technology.
Investigation into static stability in power systems integrated with renewable energy sourcesCui, Peng; Suo, Lian
doi: 10.1088/1742-6596/3018/1/012010pmid: N/A
Under the carbon peaking and carbon neutrality goals, it is imperative to vigorously promote the development of non-fossil fuel power generation and enhance the penetration rate of renewable energy sources. However, the output from renewable energy generation, particularly photovoltaic and wind power, exhibits randomness, intermittency, and volatility, which can significantly impact the static stability of the power system. This paper primarily investigates the impact of uncertainties in new energy output, load fluctuations, and fault occurrences on the static stability of power systems. It identifies key parameters that influence these uncertainties and establishes a comprehensive evaluation framework based on the severity of their effects. Ultimately, the IEEE14 bus system is utilized as a case study to validate the proposed methodology and identify the system’s vulnerable points.
MOF/polymer hybrid matrix membrane prepared by cross-linking for efficient separation of CO2/N2Sun, Xinle; Chen, Hongyu; Wang, Zhaojie
doi: 10.1088/1742-6596/3018/1/012004pmid: N/A
Metal-organic framework fillers equipped with unique gas molecular-scale nanochannels have received much attention for modifying the organic membrane for CO2/N2 separation. However, the hybrid matrix membranes suffer from low CO2 permeability. In this paper, we prepare a crosslinked membrane, i.e., chemically crosslinking NH2-ZIF-8 and PIM-1, and then construct through pores in the crosslinked membrane to facilitate CO2 mass transfer. On the one hand, thermal cross-linking can induce the polymerization of the -CN groups in the links of PIM-1 to open up the occluded pores. On the other hand, the polymer links of PIM-1 can be covalently cross-linked with the amino groups in the nanofillers, and the stabilized structure formed by covalent cross-linking can help to reduce the defects that may appear at the interface. Research indicated that the modified membrane exhibited a notable CO2 permeability of 9204 Barrer. The distinctive structure and outstanding performance in CO2/N2 separation suggest that the NH2-ZIF-8@PIM-1 membrane could be especially useful for real-world applications in CO2 separation.
Peer Review Statementdoi: 10.1088/1742-6596/3018/1/011002pmid: N/A
All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.• Type of peer review: Single Anonymous• Conference submission management system: Morressier• Number of submissions received: 51• Number of submissions sent for review: 38• Number of submissions accepted: 28• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 54.9• Average number of reviews per paper: 2• Total number of reviewers involved: 8• Contact person for queries:Name: Xuexia YeEmail: [email protected]: AEIC Academic Exchange Information Centre
Design and implementation of industrial energy comprehensive control platform under the background of dual carbonZuo, Jianxun; Wan, Kun; Wu, Jiyao; Tan, Tingfang
doi: 10.1088/1742-6596/3018/1/012024pmid: N/A
Industrial production requires the use of multiple energy sources, and traditional energy management systems have problems such as insufficient equipment status perception, low operation, and maintenance efficiency, and difficulty in improving energy conservation and carbon reduction. Based on energy panoramic monitoring, energy remote control, energy comprehensive analysis, and energy network security protection technology, a green and low-carbon industrial user-integrated energy control platform was designed to assist industrial users in transitioning from decentralized energy monitoring to centralized monitoring, from on-site control to remote control, and from extensive management to lean management.