Research On Water Consumption Law Of High-rise Buildings And Optimization For Energy-saving Of Secondary Water Supply System In Tianjin

With the increase of the number of high-rise buildings,people pay more and more attention to the energy consumption of secondary water supply.Depth understanding of the water law of these buildings,the secondary water supply system for energy-saving optimization is even more necessary.At present,basic data of water consumption in the secondary water supply system of various types of high-rise buildings are scarce,and relevant research and testing are few.This has led to the design parameters of building water supply and drainage which is not accurate enough,resulting in building water supply system is not energy save.In order to find out the rules of water use in different types of high-rise buildings in Tianjin,and to provide reference for energy-saving optimization of secondary water supply system,this study selected several types of buildings in Tianjin,including hospitals,office buildings and other types of buildings.Water consumption of these buildings was analyzed and rules of daily water consumption,the maximum instantaneous flow rate,the maximum hourly flow rate,the hourly variation coefficient and other water use data of water supply system were obtained.According to the law of water consumption,it is discussed whether the existing secondary water supply system is reasonable and puts forward the energy saving optimization scheme for the configuration and operation of the pump system of secondary water supply system.Taking the high-rise building of the hospital as an example,we find that the composition and operation of the original secondary water supply pump group is not energy-saving.The energy-saving optimization scheme of the secondary water supply system is proposed.The proposed water supply scheme is more flexible,saving investment and reducing energy consumption under the premise of ensuring water security.This paper collected the basic water consumption data of a variety of buildings in Tianjin,and provided reference for the pump selection and operation of the secondary water supply system of these buildings.It also has guiding significance for the secondary energy-saving optimization of water supply.