大型蓄热水系统斜温层控制的研究与应用

RESEARCH AND APPLICATION OF THERMOCLINE CONTROL IN LARGE-SCALE HEAT STORAGE WATER SYSTEM

以某大型蓄热水系统项目为例,对蓄热槽内布水器进行研究与设计,并通过电子计算机对设计成果进行流体模拟试验。试验结果表明:该设计成果能够有效控制斜温层厚度,减少水体流动产生的扰动和对斜温层的破坏,保证了换热效果,提高了蓄热利用效率。通过对后期运营过程中监测的实际运行数据进行分析发现,供暖能耗费用节约21%。在实行阶梯电价或绿色能源充沛的地区,应用蓄热水系统可以节约能源、节省能耗费用、降低碳排放。

Based on the example of a large-scale heat storage water system project,water distributor in the heat storage tank was studied and designed,and a fluid simulation test toward the design achievements was conducted using electronic computers.The test results indicate that the design achievements can effectively control the thickness of the thermocline and reduce the disturbance caused by water flow and the damage to the thermocline,thereby ensuring the heat transfer effect and improving the utilization efficiency of stored heat.According to the analysis on the actual operating data monitored in the course of later operation,the heating energy consumption cost has been saved by 21%.In regions with a step tariff or abundant green energy,energy and energy consumption cost can be saved,and carbon emissions can be reduced owing to the application of the heat storage water system.