作者机构：
[Huang, SS; Huang, Shanshan; Ye, Ze] Changsha Univ Sci & Technol, Sch Econ & Management, Changsha 410076, Peoples R China.;[Huang, Yunxiang] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410076, Peoples R China.
通讯机构：
[Huang, SS ] C;Changsha Univ Sci & Technol, Sch Econ & Management, Changsha 410076, Peoples R China.
关键词：
Grid -side energy storage;Transmission and distribution tariff;Benefit evaluation;Economic externality theory
摘要：
Grid-side energy storage has become a crucial part of contemporary power systems as a result of the rapid expansion of renewable energy sources and the rising demand for grid stability. This study aims to investigate the rationality of incorporating grid-side energy storage costs into transmission and distribution (T&D) tariffs, evaluating this approach using economic externality theory. We first develop a comprehensive benefit evaluation framework based on economic externality theory considering system stability, renewable energy integration, end-user, and environmental impacts. Then, using the CPLEX solver, an operating model of grid-side energy storage is constructed with the goal of reducing substation load variations. Through a case study, it is found that grid-side energy storage has significant positive externality benefits, validating the rationale for including grid-side energy storage costs in T&D tariffs. Sensitivity analysis suggests that with cost reduction and market development, the proportion of grid-side energy storage included in the T&D tariff should gradually recede. As a result, this study offers important information about whether it is reasonable to include grid-side energy storage costs in T&D tariffs in China.
摘要：
A building with Trombe wall and phase change materials (PCMs) was designed, developed, tested and simulated to investigate the thermal comfort variation under various operation conditions. Eight models with different PCMs and ventilation modes were simulated and validated against experimental data. The thermal performance throughout the entire year was analyzed using indexes as integrated indoor discomfort degree-hour (IDH) and integrated indoor discomfort duration (ID). The findings indicate a strong correlation between the indoor thermal comfort and ventilation strategy, PCMs type and PCMs position. Ventilation with the presence of PCM25 at the inside layer of the Trombe wall is the most efficient approach to reduce the integrated indoor thermal discomfort degree-hour with a value of 12,857 & DEG;C & BULL;h with a penalty of longer indoor discomfort duration. However, for no ventilation condition, it is recommend to adopt the Trombe wall with PCM28 at the outside layer and PCM18 at the inside layer. The lowest integrated indoor thermal discomfort degree-hour was 13,914 & DEG;C & BULL;h. The lowest integrated indoor discomfort duration of 3009 h was obtained with the single Trombe wall without ventilation in the entire year.
期刊：
Chemical Engineering Journal,2023年459:141614 ISSN：1385-8947
通讯作者：
Su, Sheng(susheng_sklcc@hotmail.com)
作者机构：
[Wang, Yi; Zhong, Yuxiu; Xiang, Jun; Song, Yawei; Su, Sheng; Hu, Song; Yin, Zijun; Lu, Jingwen; Liu, Tao] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China.;[Qing, Mengxia] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.;[Wang, Lele] Xian Thermal Power Res Inst Co Ltd, Suzhou Branch, Suzhou 215153, Jiangsu, Peoples R China.;[Su, Sheng] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Peoples R China.
通讯机构：
[Sheng Su] S;State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
作者：
Gao, Mingfei;Han, Zhonghe;Zhao, Bin;Li, Peng;Wu, Di
期刊：
Journal of Energy Storage,2023年73:109015 ISSN：2352-152X
通讯作者：
Gao, MF
作者机构：
[Han, Zhonghe; Gao, Mingfei; Zhao, Bin; Wu, Di] North China Elect Power Univ, Sch Energy Power & Mech Engn, Dept Power Engn, Baoding 071003, Hebei, Peoples R China.;[Han, Zhonghe; Li, Peng; Wu, Di] North China Elect Power Univ, Hebei Key Lab Low Carbon & High Efficiency Power G, Baoding 071003, Hebei, Peoples R China.;[Li, Peng] North China Elect Power Univ, Sch Elect & Elect Engn, Baoding 071003, Hebei, Peoples R China.;[Zhao, Bin] Changsha Univ Sci & Technol, Coll Energy & Power Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构：
[Gao, MF ] N;North China Elect Power Univ, Sch Energy Power & Mech Engn, Dept Power Engn, Baoding 071003, Hebei, Peoples R China.
关键词：
Multi-energy storage system;Integrated energy system;Optimal planning;Power response;Storage type selection
摘要：
The application of Integrated Energy Systems (IES) in establishing low-carbon, safe, and efficient energy supply systems has gained significant attention in recent years. However, as an energy stability link in IES, there is a lack of mature theoretical methods for energy allocation and optimal planning in the current multi-energy storage system (MESS) research. Hence, this paper proposes a method for configuring the capacity and selecting storage types in MESS within the IES. By considering the power response characteristics of different storage media, a combined ESMD-MPSO model is established that aims to enhance the economy and extend the service life of MESS. The model could allocate the power to the energy storage devices based on their power response capabilities and economic evaluation. Additionally, MESS application scenarios in both islanded and grid-connected IES are established. Highly adaptable energy storage devices are selected using the Analytic Hierarchy Process and the Fuzzy Comprehensive Evaluation method, resulting in four different multi-energy storage schemes for analysis. The results demonstrate that the method enables the determination of cost-optimal energy storage combination and capacity configuration for both scenarios. Furthermore, compared to existing methods, the approach achieves a 22.1 % and 9.6 % improvement in annual average costs for the two scenarios. This research could provide guidance for the planning and development of multi-energy storage systems within the IES.
摘要：
The battery thermal management system is critical to the operating safety of power batteries. To alleviate the temperature gradient effect caused by the high local temperature of the battery, a centrally dispersed squarespiral-ring (SSR) mini-channel liquid cooling plate is designed for power batteries in this study. Through the simplification of the battery model, this liquid cooling plate battery thermal management system is investigated numerically. The effects of the number of SSR channel laps, channel width, channel bend radius and inlet mass flow rate on the temperature characteristics of the battery and coolant pressure drop are investigated. The results indicate that increasing the SSR channel laps and narrowing the channel width have a beneficial role in improving the battery and liquid cooling plate temperature distribution. The maximum battery temperature can be significantly dropped and the uniformity of battery temperature distribution can be considerably improved by enhancing the inlet mass flow rate. Moreover, additional branch channels could further improve the uniformity of the temperature distribution and the gradient effect of the battery. The maximum temperature decreases to 33.63 degrees C and the maximum temperature difference reduces to 6.45 degrees C during the 2C discharge process at a temperature of 25 degrees C. Furthermore, the SSR liquid cooling plate with a 5 mm-wide branch channel enables lower maximum battery temperatures and better temperature uniformity with lower pump power consumption than the existing serpentine plate. All these results and evidence provide an option for the development of novel minichannel liquid cooling plates for battery thermal management.
作者机构：
[Xiong, Xi; Huang, Weiying; Jiang, Zhen; Chen, Jianhua; Qiu, Wei; Chen, Jian] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Key Lab Efficient & Clean Energy Utilizat, Changsha 410114, Peoples R China.;[Ren, Xianwei] North Univ China, Sch Mat Sci & Engn, Shuozhou 038507, Peoples R China.;[Lu, Liwei] Hunan Univ Sci & Technol, Hunan Prov Key Lab High Efficiency & Precis Machi, Xiangtan 411201, Peoples R China.
通讯机构：
[Liwei Lu] H;Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material, Hunan University of Science and Technology, Xiangtan, China
摘要：
The effectiveness of using personalized ventilation (PV) in mitigating airborne transmission risk was found to be easily affected by multiple factors. The aim of this study was hereby to evaluate the impacts of several important factors on the performance of PV in airborne disease control for closely ranged occupants. Orthogonal experiments were designed for CFD simulations under different levels of four selected factors. Results indicated that the order of significance of these four factors affecting the intake fraction (IF) of the exposed occupant was as follows: mode of PV use > relative distance between occupants > PV airflow volume > background ventilation. The best combination of the four tested factors was PV of 15 L/s for both the infected source and the exposed occupant, with a relative distance of 2 m between them and mixing ventilation, which would yield an IF of merely 0.0246%. The worst combination was PV of 6 L/s for the exposed occupant only, with a relative distance of 0.86 m under displacement ventilation, indicating an elevated IF of 0.2919%. The increase of PV air volume and relative separation distance both contributed to lower exposure risk, but they were not as influential as the mode of PV use. PV integrated with mixing ventilation and utilized for both infected and susceptible occupants were recommended. The findings in this study will be helpful to provide guidance for the implementation of PV in indoor environment for airborne infection control.
作者：
Xin, Feng;Zhang, Junying;Yang, Yanfeng;Cao, Wenguang;Zhao, Bin
期刊：
Energy Reports,2023年9(SUPPL-6):154-162 ISSN：2352-4847
通讯作者：
Zhao, B
作者机构：
[Xin, Feng; Cao, Wenguang; Zhao, Bin; Yang, Yanfeng] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.;[Zhang, Junying] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China.
通讯机构：
[Zhao, B ] C;Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.
会议名称：
7th International Conference on Energy and Environmental Science (ICEES)
会议时间：
JAN 06-08, 2023
会议地点：
PEOPLES R CHINA
会议主办单位：
[Xin, Feng;Yang, Yanfeng;Cao, Wenguang;Zhao, Bin] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.^[Zhang, Junying] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan, Peoples R China.
关键词：
Working gas;Enhancement of heat transfer;Oscillating flow;Heating tube;Spiral insert
摘要：
The working gas type had an important effect on the heat transfer performance of the turbulence device in the heater of Stirling engine, but the related researches were scarce, especially under the oscillatory flow. This work investigated the effects of four working gases (i.e., H-2, He, N-2, and CO2) on the heat transfer characteristics of a heating tube with spiral insert compared with a smooth tube under oscillating flow for a Stirling engine. The transient physical fields under different phase angles in an oscillatory cycle were analyzed, and the Nusselt (Nu) number, pressure loss and outlet temperature of working gas were studied. The results show that the cycle average Nu number of the enhanced tube with H-2, He, N-2, and CO2 as working gas increased to 1.67, 1.62, 1.61 and 1.72 times when comparing with those of the smooth tube. The cycle average friction coefficient increased to 1.96, 2.37, 2.36 and 2.62 times, respectively. Moreover, the performance evaluation criterion (PEC) values of the enhanced tube using the four types of working gas were all greater than 1 (1.21 similar to 1.33). This implies that the comprehensive heat transfer performance of the heating tube with spiral insert was all improved with the four types of working gas. Moreover, the heat transfer enhancement effect was best when hydrogen was used. While considering the thermodynamic performance and safety reliability, the helium was more recommended. The findings are beneficial to enhance the operating efficiency of a Stirling engine. (c) 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
作者机构：
[Fen Zhang; Baihui Zhang; Shunhui Zhang; Yinghao Chen; Jianing Xie; Wenkui Wen; Zhengwei Zhang] College of Physics and Electronics, Central South University, Changsha, 410083, China;[Yang Du; Huifang Ma] School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China;[Xiangdong Yang; Le Gao] Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo, 315211, China;[Xiang Lan; Tian Zhang] College of Materials Science and Engineering, Hunan University, Changsha, 410082, China;[Xuyang Zhang] College of Energy and Power Engineering, Changsha University of Science and Technology, Changsha, 410114, China
通讯机构：
[Huifang Ma] S;[Zhengwei Zhang] C;College of Physics and Electronics, Central South University, Changsha, 410083, China<&wdkj&>School of Flexible Electronics (Future Technologies) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
摘要：
The engineering of stacking order plays an important role in regulations of electronic and optical properties of layered van der Waals materials. Here, we demonstrate a developed physical vapour deposition approach to grow WSe2 atomic layers with controllable 3R and 2H phases. The 3R WSe2 bilayer tends to form at a lower deposition temperature (830 °C), and the 2H WSe2 bilayer prefers to grow at a higher deposition temperature (930 °C). Efficient phase engineering was demonstrated by simply controlling the deposition temperature. Moreover, by photoluminescence, Raman, selected area electron diffraction and so on, it was determined that the AA'-stacking corresponds to the 2H phase, and the AB-stacking corresponds to the 3R phase. So, different layer stacking and interlayer coupling result in differences in the optical and optoelectronic properties of the two phases. The responsivity of 3R bilayer WSe2 is ∼195 times higher than 2H phase exhibiting dramatically improved photoelectric detection performance by phase engineering (R3R = 2.54 A/W vs R2H = 0.013 A/W at 780 nm, 82.7 mW cm−2). Hence, the findings of this study not only contribute to the controllable synthesis of two-dimensional materials with diverse stacking phases but also hold promise for advancing the design and fabrication of future optoelectronic devices.
作者机构：
[Yang, Zhaohui; Tong, Jing; Xiong, WP; Yang, Baocun; Yang, ZH; Peng, Haihao; Xiang, Yinping; Xiong, Weiping] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.;[Tong, Jing] Hunan Acad Forestry, State Key Lab Utilizat Woody Oil Resource, Changsha 410004, Peoples R China.;[Ruan, Min] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410076, Peoples R China.;[Xiong, WP; Chen, Zhaomeng; Xiong, Weiping] Hunan Boke Environm Engn Co Ltd, Hengyang 421099, Peoples R China.
通讯机构：
[Xiong, WP ; Yang, ZH] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.;Hunan Boke Environm Engn Co Ltd, Hengyang 421099, Peoples R China.
摘要：
The Cu-mediated bimetallic catalyst, MW-53(Fe, Cu)-4, was synthesized for the first time via the microwave hydrothermal method. This catalyst demonstrated effective removal of norfloxacin (NOF) through the activation of persulfate (PDS). The MW-53(Fe, Cu)-4 catalyst demonstrated a superior NOF removal efficiency compared to its non-doped counterpart (MW-53(Fe)), with an increase in efficacy from 13.96% to 79.97% within 5 min. Furthermore, the differences and performance improvements in terms of the morphology, specific surface area, pore diameter, and electrochemical performance were analyzed between the microwave hydrothermal synthesis catalyst materials and traditional hydrothermal materials, confirming the positive effect of the microwave synthesis method on improving the catalyst performance. Based on physicochemical characterization, the microwave synthesis method accelerated the process of Cu isomorphism substitution to change the electronic symmetry distribution of Fe sites to form an Fe-O-Cu coordinated environment. Diatomic active centers of Fe and Cu were constructed, which synergistically accelerated electron transfer on the catalyst surface, enabling the continuous catalysis of PDS. This provides a promising method for developing multi-metal catalyst materials for environmental pollution remediation using a microwave hydrothermal method. A heterostructured diatomic catalyst synthesized by a microwave hydrothermal method accelerates interfacial charge transfer and enhances the ability to treat antibiotic wastewater.
