https://ojs.luminescience.cn/CER/issue/feed 2025-12-31T00:00:00+08:00 Editorial Office of CER editor-cer@luminescience-press.com Open Journal Systems <p><em>Civil and Energy Research</em> (CER) aims to provide a high-level academic exchange platform for academic researchers, engineers and practitioners in the fields of civil engineering and energy around the world, and publish the latest scientific research results and technological advances. This journal pays special attention to the intersection and integration of civil engineering and energy, and welcomes original research, review articles, technical reports, case studies in related fields.</p> https://ojs.luminescience.cn/CER/article/view/483 2025-12-29T17:51:45+08:00 Yong Yuan yuany@tongji.edu.cn Li Zhu lizhu@edu.cn Menghao Huang menghaohuang@tj.com Jiaolong Zhang Jiaolong_Zhang@tongji.edu.cn

<p style="font-weight: 400;">Energy storage is a critical component of the modern electrical system, alongside power plants, grids, and users. Many methods of storing electrical power have made significant progress. This paper presents a perspective on storing electrical energy in cities in the form of liquid nitrogen and its associated thermal energy byproducts. Statistics on city electrical consumption indicate that commercial services account for more than 50% of total usage, with Heating Ventilation Air Conditioning comprising 50% of this power consumption, both on a daily and seasonal basis. This highlights the potential for electrical consumption to manifest as cold energy in summer and thermal energy in winter. To address this, a liquid nitrogen energy storage and release (LN-ESR) system is proposed, capable of storing large quantities of both cold and thermal energy. The stored cold energy can be released during summer to regulate building air temperature, while the resulting expanded gas could drive a gas turbine to generate electricity. In winter, the thermal energy can be used to heat buildings. A preliminary techno-economic analysis is presented, comparing the LN-ESR system with conventional compressed air energy storage (CAES) and evaluating its feasibility for underground storage applications.</p>

2026-03-11T00:00:00+08:00 Copyright © 2026 Yong Yuan, Li Zhu, Menghao Huang, Jiaolong Zhang https://ojs.luminescience.cn/CER/article/view/468 2025-10-28T14:29:24+08:00 Yong Yuan yuany@tongji.edu.cn Xupeng Yao xupengyao@163.com Xinhang Xiong 2310062@tongji.edu.cn Chai Rui head.chris@icloud.com Jiao-Long Zhang Jiaolong_Zhang@tongji.edu.cn

<p>This perspective article examines the crossing strait tunnel (CST) as a sophisticated and integrated system, in which safety, construction efficiency, and energy sustainability represent interconnected priorities for next-generation projects. In response, this paper identifies and proposes key technologies necessary to advance long CST development. Analysis of global cases reveals a predominant trend towards significantly larger cross-sections in this century compared to the mid-1900s. Accordingly, the paper proposes integrated evacuation frameworks for both cross-sectional and longitudinal layouts, incorporating energy balance considerations to enhance overall operational safety and efficiency. To achieve rapid tunneling in challenging marine environments, the concept of an offshore floating platform (OFP) is introduced as a foundation for deepwater construction. The OFP is designed to serve as a hub for the concurrent launch and operation of multiple tunnel boring machines (TBMs), integrating robotic systems, autonomous controls, and advanced information technology (e.g., real-time monitoring) to enable efficient tunneling advancement. Furthermore, the OFP's role in achieving energy and ecological balance is conceptualized. Collectively, these proposed solutions aim to address the unique challenges of long CSTs and stimulate discussion on sustainable and efficient tunnel development.</p>

2026-01-08T00:00:00+08:00 Copyright © 2026 Yong Yuan, Xupeng Yao, Xinhang Xiong, Chai Rui, Jiao-Long Zhang