Article | 2022-05-27
Integrated Development of Rail Transit and Energies in China: Development Paths and Strategies
Rail transit features high levels of energy consumption and carbon emission; therefore, transforming its energy structure and developing a novel rail transit energy system with self-consistent energy supply become significant approaches for realizing carbon peak and neutrality in China. In this article, we first review the demand for the integrated development of rail transit and energies, summarize the current status and development trends of the integration, and analyze natural endowments for the integration in terms of solar and wind resources. Subsequently, based on the characteristics of electrified and non-electrified rail transits, critical technology paths are proposed considering the natural endowments of renewable energies. Moreover, based on the assessment of self-consistent supply potentials of new energies, a series of scenarios and methods are introduced. A roadmap and suggestions are proposed for rail-energy integration development, aiming to a self-consistent energy system construct for rail transit. The suggestions include: (1) encouraging technology innovation regarding green and intelligent rail transit to form a technology system for rail-energy integration; (2) implementing major scientific and technological projects to coordinate the industrial layout of new energy and rail transit; and (3) formulating support policies to create a policy guarantee system for green finance.
Article | 2022-05-26
Industrial Development of Hydrogen Blending in Natural Gas Pipelines in China
The development of hydrogen industry is crucial for realizing the green and low-carbon transformation of terminal energy consumption. The efficiency of hydrogen transportation is key to the development of hydrogen industry. Blending hydrogen in natural gas pipelines can improve the scale and efficiency of hydrogen distribution in a short period of time, and it provides a solution for expanding the scale of hydrogen application. Based on defining the industrial chain of hydrogen blending in natural gas pipelines, the paper discusses the values of developing the blending industry in terms of promoting the hydrogen industry, resolving renewable energy consumption, ensuring energy supply security, realizing the deep carbon reduction of terminal energy consumption, and encouraging energy technology innovation. Moreover, the paper summarizes the international progress and domestic current status of the blending industry. It unravels key issues regarding the hydrogen blending proportion, adaptability of pipes and terminal equipment, and their safety use and technical economy. Furthermore, we propose the following suggestions: (1) strengthening the toplevel design, (2) building a standards system for safety supervision as well as technology and operation management of hydrogen blending in natural gas pipelines, (3) actively deploying demonstration projects through multi-participation, and (4) exploring diversified application scenarios and business models, thereby cultivating a sustainable industrial ecosystem to steadily promote the scaled development of the industry.
Editorial | 2022-05-20
Intelligent analysis for software data: research and applications
Research Article | 2022-05-20
An incremental software architecture recovery technique driven by code changes