Study On Hydraulic Optimization Of District Heating System In Xinjiang Medical University

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 development status of the pipe network of heating in domenstic and forein. Know that the phenomenon of the hydraulic disorder became more and more serious. It is significant to solve the problem.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.Then, the running conditions (hydraulic and thermal) of the XinJiang Medical University heating system in the 06- 07 heating period had been tested and analyzed, so the existing state of energy consumption had been mastered all-around. What more, for one substation as example, it is detailedly presented the hydraulic balance levels of each hot entrance, and the wasted energy by the hydranlic disorder.It establishes mathematical model for the operating condition of the pipe network of heating by software of HACNet. Based on the reseach, the optimal program on the technicology and economy has been raised to improve the condition of the heating system.This paper combined the testing with theoretical analysis. The rich content has guiding significance to engineering practice on the depth. And,the study is the base of the further development in the future.