Energy Saving And Optimization Of Secondary Water Supply System In Urban Residential District

Today,the city's high-rise residential district has sprung up,the secondary water supply system as a residential ancillary facilities,the required energy consumption also increased.The operation design of the water pump and pipeline partition in the secondary water supply pump house is mainly based on the change law of the water consumption of the residents in the high-rise residential area.When China's design staff designing high-rise building secondary water supply system,the reference to the same type of high-rise building water consumption changes in the law is less,most of the national norms only in accordance with the formula to estimate,so for the pump model and its working program are determined to be unscientific,while increasing the running power consumption and water consumption,resulting in waste of energy.Inaccuracy of the design parameter and the insufficiency of design basis are the main reason for the high energy consumption of the secondary water-supply system in high-rise residential buildings.In order to provide data support for the existing standards,as well as to provide technical reference for the energy saving of the secondary water-supply system,a large residential district is selected as the research object to monitor and analyze the change rule of water consumption in real time in this paper.Then the water supply system was reformed.According to the characteristic curve and similarity law of water pump,the energy consumption of water supply is calculated,and the energy consumption of the scheme is compared with that before transformation.By comparing the water supply system' parameter monitored in this research with the specified value,it is found that the actual high daily water supply quota and the average daily water supply water saving quota are just in the range of national standard for the type ? ordinary residence,but the hourly variation coefficient is too large.Water peaks occur at weekends,with low peaks occurring on Friday,and daily water consumption decreasing from Monday to Friday.The impact of holidays on the daily water consumption is greater than the weekend factors.Per capital daily water consumption in May to December showed a trend of increase first and then decrease.June to August for the summer peak water,summer and autumn water consumption was significantly higher than the spring and winter water consumption.As the temperature rises,the water consumption of the water supply system increases.This design transformation uses the water pump for the frequency conversion constant pressure water supply.Contrasting before and after the transformation of the pump energy consumption we can found that it's average to save electricity 43.78 k Wh after transformation than before.Flat to each user will be able to come to each household to save 21.8 yuan per year.After the change of the program can be very good in selecting pump with the time curve.The pump can be in the efficient operation at different times and the pump rated power lower than the former.The final energy consumption can reduce 39% of electricity consumption.Finally,The thesis emphases thought over the influence on the optimization of distribution system of DSM electrovalence,and the main water supply methods were compared.the present situation of the secondary water supply facilities in Jinan is briefly analyzed.Combined with the Jinan City residents secondary water supply transformation,the brief introduction and transformation program of some projects are introduced briefly.In the secondary water supply facilities,we should not blindly cancel the roof water tank.We should be based on the specific form of residential for specific analysis.