太阳能供暖系统直埋管道保温设计方法研究进展
Review of insulation design methods for directly buried pipelines in solar heating systems
摘要：
梳理了直埋供热管道保温设计进展及其在高原太阳能供暖系统中的应用现状,结合相关文献与标准总结了管道热损失计算、运行效率评价、保温层厚度设计等方面的研究成果。首先,从稳态和非稳态两方面详细论述了供热管道的热损失计算方法及其发展。其次,结合管道运行评价将供热管道保温设计分为经济保温方法与其他保温方法并总结了设计要点。再次,阐述了高原地区太阳能供暖的发展,并指出了高原地区直埋管道保温设计存在的不足。最后,展望了高原太阳能供暖系统直埋管道保温设计的研究重点,围绕高原特殊气候与地质条件,探索了太阳能供暖系统管网输配降损新方法与新技术,助力我国供暖事业绿色化、低碳化高质量发展。
Abstract：
This paper provides a comprehensive review of insulation design advancements for directly buried heating pipelines and their current application in plateau solar heating systems. Drawing upon relevant literature and standards, it synthesizes research findings pertaining to pipeline heat loss calculation, operational efficiency assessment, and insulation layer thickness design. Firstly, the paper examines methods and advancements in calculating heat loss in heating pipelines, considering both steady-state and unsteady-state conditions. Secondly, the insulation design of heating pipeline is divided into economic and alternative insulation methods based on operational evaluations, and the key design points are summarized. Thirdly, this paper elucidates the evolution of solar heating systems in plateau regions and identifies shortcomings in insulation designs for directly buried heating pipelines in these areas. Finally, this research focuses on the insulation design of directly buried pipelines in solar heating systems situated on the Qinghai-Xizang Plateau. It emphasizes the exploration of innovative methods and technologies aimed at minimizing transmission and distribution losses within the solar heating system network, while considering the unique climatic and geological condition characteristics of the plateau. This initiative aspires to promote a green and low-carbon transformation in China’s heating sector, steering it towards high-quality development.
Keywords:directly buried heating pipeline; solar heating system; plateau region; pipeline heat loss; pipeline insulation design