| With the development of economy and the improvement of living standards,the demand for water resources is getting higher and higher,and the high leakage of the water supply pipe network leads to a serious waste of water resources.Colleges and universities are typical areas where water is concentrated in public buildings,and most of the water is concentrated in three types of buildings,dormitories,teaching office buildings,and laboratory buildings.With the expansion of the enrollment scale,the number of universities and the number of students on campus has been increasing,and universities have gradually become major water users,and the leakage of the water supply pipe network in universities is also very serious,which is an important limiting factor in the construction of conservation-oriented universities.In the context of building a conservation-oriented society and adhering to sustainable development,it is imperative to improve the management level of the water supply network in colleges and universities and reduce the amount of leakage.Therefore,studying the law of water consumption and leakage of typical public buildings in college parks and analyzing the factors affecting leakage can provide relevant theoretical basis for colleges and universities to improve the current situation of leakage.The research content and conclusion specifically includes the following three aspects:(1)Analyzing the changes in the annual,monthly,and daily water consumption and leakage of the three types of buildings in the university’s A and B campus dormitories,teaching office buildings,and laboratory buildings from 2018 to 2020.The annual water consumption and leakage of the three types of buildings all show a downward trend,indicating that some progress has been made in water-saving work and the efficiency of water use has improved.The monthly water consumption of the three types of buildings has the smallest fluctuations in the teaching and office buildings,followed by the dormitories,and the laboratory buildings have the largest fluctuations in the monthly water consumption.The daily water consumption of the three types of buildings fluctuates the least in dormitories,and the daily water consumption of teaching office buildings and laboratory buildings fluctuates greatly.The daily leakage of the three types of buildings is relatively stable for most of the time,with occasional fluctuations,indicating that the leakage of the buildings is mainly running and dripping,and the fluctuations prove that there are water appliances or pipeline damage.(2)The relationship between the four factors of pressure,pipeline age,pipeline material,number of fixtures and the amount of leakage in various types of buildings is analyzed.Through correlation analysis and regression curve fitting,it is found that each has an impact on the amount of building leakage.Among them,the average daily leakage of dormitories is moderately correlated with pressure and pipeline age`,and is highly correlated with the number of fixtures;the average daily leakage of teaching office buildings is highly correlated with pressure and pipeline age,and is extremely high correlation with the number of fixtures The average daily leakage of the laboratory building is highly correlated with the pressure and the number of fixtures,and is extremely low correlated with the pipeline age.Among the pipes,galvanized steel pipes and PEX pipes are the least prone to leakage,while PP-R pipes are the most prone to leakage.In the curve fitting results,various buildings have a power function or logarithmic function relationship with pressure,a quadratic function relationship with pipeline age generally,and a linear function relationship with the number of fixture.(3)In order to clarify the key points in the daily maintenance of various buildings,the four factors are evaluated with the aid of the gray correlation model,and it is found that the order of the dormitory building relevance is pipeline age(0.740)>fixture unit(0.729)>pipeline material(0.696)>pressure(0.613);the teaching office building relevance is ranked as pressure(0.702)>pipeline material(0.663)> fixture unit(0.644)>pipeline age(0.643);the order of the laboratory building relevance is pipeline material(0.803)>pipeline age(0.697)> fixture unit(0.628)>pressure(0.521).The greater the correlation value,the greater the influence of the factor.It shows that the leakage of the dormitory is most affected by the factors of pipeline age and fixture unit,the teaching office building is most affected by the pressure factor,and the laboratory building is most affected by the pipeline material factor.Based on the above conclusions,it can provide data support and theoretical basis for universities to propose targeted solutions to reduce leakage,so as to reduce the amount of building leakage in the campus,improve the level of water saving work,and make the campus water supply network operate in a more economical state. |
