“双碳”背景下上海典型老旧居民小区二次供水系统能耗研究  

Energy Consumption of Secondary Water Supply System in Typical Old Residential Quarters in Shanghai under the Background of"Double Carbon"

作　　者：范晶璟 FAN Jingjing(Shanghai Chengtou Water Supply Branch Company,Shanghai 200002,China)

机构地区：[1]上海城投水务(集团)有限公司供水分公司,上海200002

出　　处：《华东理工大学学报（自然科学版）》2023年第3期335-340,共6页Journal of East China University of Science and Technology

摘　　要：通过对上海典型老旧居民小区的多层建筑和高层建筑供水系统进行研究,对比分析了二次供水水泵在不同工况下的水量、能耗及效率方面的差异。结果表明,由于水池+变频水泵模式下水泵一天内主要时段的供水水量远低于额定流量,因此在满足相同供水需求时,水池+变频水泵模式下水泵的运行效率是水池+工频水泵+屋顶水箱模式下水泵运行效率的50%左右。部分水箱存在因位置距离顶楼过近,仅凭重力流无法满足供水压力需求的情况,水池+工频水泵+屋顶水箱模式需要再次加压,屋顶水泵再次加压的能耗约为泵房变频水泵能耗的200%以上,水池+变频水泵模式下总体能耗更低。Taking the water supply of mid-rise buildings and high-rise buildings in typical old residential areas in Shanghai as the research object,this paper analyzes and compares the water flow,energy consumption and efficiency of secondary water supply pumps under different working conditions.The water supply flow in the main period of the day in the cistern+variable frequency pump mode is much lower than the rated flow,therefore,under the condition of meeting the same water supply target,the operating efficiency of the cistern+variable frequency pump is about 50%of that in the cistern+main frequency pump+water tank mode.However,some water tanks are too close to the top floor residents to meet the water supply pressure demand only by gravity flow.The cistern+main frequency pump+water tank mode needs to be repressurized,and the repressurization energy consumption of the roof water pump is about 200%of the energy consumption of the variable frequency pump in the pump station.At this time,the energy consumption of the cistern+variable frequency pump mode is lower.

关 键 词：二次供水 碳中和 碳达峰 水泵能耗 水量 

分 类 号：TU991[建筑科学—市政工程]