The Fluid Network Analysis Of Heating Pipe And The Study Of Hydraulic Balance

The pipe network of heating is a complex fluid network system. Its operating condition is affected by many factors such as operating status, environment, time, manufacturing and construction process, etc. The hydraulic disorder appears ubiquitously in the pipe network of heating. Therefore, the problems such as the overcome of the hydraulic disorder, realization of the hydraulic balance, increase of its economy, security and reliability, and amelioration of the quality of heating, should be considered in the heating engineering, and this paper focuses on these issues.In the first part, the paper analyzes the phenomenon of the hydraulic disorder in the pipe network of heating. Based on the research on performance, influences, external styles and internal causes of the pipe network of heating, it gives solutions to hydraulic disorder, and proposes principles of optimization.The following part of the paper makes theoretical analysis to the operating condition of hydraulic disorder, and gives some qualitative definition to the regularities of the hydraulic disorder in the pipe network of heating based on the calculation of hydraulic resistance balance. The paper also establishes mathematical model for the operating condition of the pipe network of heating with reference to relevant theorems and laws of fluid network and network graph theory.The third part of the paper gives a fluid network analysis to the pipe network of heating. This analysis consists of three parts: 1, analyzing and calculating the movement principles of some parameters such as system flow and system pressure with the mathematical model mentioned above; 2, drawing the conclusion of the relation between the pressure drop at any part of the pipe network and the flow of this part by the method of (MKP); 3, calculating with root-squaring method and giving program of MKP.In the end, the paper takes the east and north lines the pipe network of heating of Xunyuan village, Tianjin Economic technological Development Area as one example, calculates the relation between customers and system using the program above mentioned. And some actual adjustment was made with method of simulation analysis was applied in the same system.Through application in these two examples, the methods and programs the paper concludes are proved to be effective in both theory and application.