集中供热管网蓄热分析

Heat storage analysis of central heating pipe network

绿色低碳能源战略之下,热电机组将成为风、光清洁发电的调峰电源,一天之内机组负荷会有40%-100%调整幅度。热电低负荷时如何保证正常供热将是个重要的问题。通过已有管网系统进行蓄热、释热,应对热源输出的波动性,对问题的解决有积极意义。本文以北方供热区域四个典型城市热网为计算案例,对管网基础参数、蓄热潜力、蓄热强度、蓄热量能承担当日负荷时长等进行了详细计算分析,探讨了利用已有管网进行蓄热释热来应对热源波动性的可能性,并对蓄热工况下热源、热网的调节控制策略进行了论述说明。文章对相关供热蓄热工程项目有一定指导意义。

Under the green and low-carbon energy strategy,the thermoelectric unit will become the peak-regulating power source for clean wind and light power generation,and the unit load will be adjusted by 30%-100% within a day.It is an important problem how to ensure normal heating under low thermal load.Heat storage and release through existing pipe network system can deal with the fluctuation of heat source output,which has positive significance to solve the problem.This paper,taking the northern heating areas of four typical city heat supply network for calculating cases,basic parameters,the regenerative potential of pipe networks,intensity of heat storage and heat storage can bear the load duration,etc.A detailed calculation and analysis,discusses the use of existing network is regenerative heat release in response to the possibility of heat source of volatility,and the adjustment of regenerative heat source, heat supply network under the condition of the control strategy are discussed. This paper has some guiding significance to the relevant heating and heat storage engineering projects.