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        1. 暖通空调杂志社>期刊目次>2019年>第1期

          集中供热管网的蓄热模式与蓄热能力评估

          Heat storage mode and capacity evaluation of district heating networks

          王晋达 周志刚 赵加宁 郑进福
          哈尔滨工业大学

          摘要:

          为了明确供热管网蓄放热的基本概念和可行性,促进供热系统动态运行水平的提高,基于理论分析对集中供热管网的2种基本蓄热模式(温度提升式蓄热和流量增加式蓄热)进行了研究,并给出了管网综合蓄热能力的计算公式;对长输供热管线参与系统蓄放热的运行调节方法进行了讨论。基于某实际案例的计算结果表明:大型供热管网(尤其是长输供热管线)具有相当可观的蓄热能力;管网的总蓄热能力随室外温度的升高显著增大;充分利用管网的蓄热能力能够为热源的抢修工作赢得更多的时间。

          关键词:集中供热管网,短期蓄热,蓄热模式,长输供热管线,蓄热能力

          Abstract:

          In order to illustrate the essential concept and operation feasibility of thermal energy storage (TES) by district heating network (DHN), and improve the dynamic operation level of heating system, studies two basic heat storage modes (i.e. temperature-increasing mode and flow-promoting mode) of DHN based on theoretical analysis. Proposes the calculation formula of the comprehensive heat storage capacity of DHN. Discusses the corresponding regulation method of long transmission pipelines (LTP) participating in the system heat storage and release. The calculation results from a real engineering project shows that the heat storage capacity of large-scale DHN (especially the LTP) is enormous and increases significantly with the increase of outdoor temperature. Making full use of the TES potential of DHN and LTP can gain more time for the repair work of heat source.

          Keywords:districtheatingnetwork,short-termheatstorage,heatstoragemode,longtransmissionpipeline,heatstoragecapacity

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