Qinhuangdao Western Economic And Technological Development Zone Heat Supply Network With Multi-heat Source Technology Research

In recent years, with the rapid development of the national economy, the city heating industry scale is enlarging. Pooled operation of multi-heat source has been used and popularized by many large heating enterprises. However, pooled operation of multi-heat source not only includes a plurality of heat source, and its topology than the traditional branch network, but one or a plurality of annular pipe network, so the thermal and hydraulic conditions which are more complicated, makes it difficult to grasp its regularity.Currently in the field of heating design, how to design the multi-heat source heating pipe network system, how to carry on the hydraulic analysis of heating pipe network, how to reduce the pump transport energy consumption, how to flexibly allocate each heat source heat supply are lack of technology and experience.Based on the present situation of West Qinhuangdao economic and Technological Development Zone heating pipe network and according to the development planning of this area till 2030, this article studies on heat supply network with multi-heat source technology, provides the reference for the implement of the project.As the basic of heat supply network research, this article firstly calculates the heating load of each period such as short term, mid-term and long-range term. According to heating load, the arrangement of heat supply network is designed. According to the development plan, three typical operating conditions of network are predicted, and hydraulic calculations are carried out. According to the calculation results, substation and relay station are designed which are adapted to the long-range term plan. Then the multi-heat source heating pipe network project design is completed. This article provides technical support for the regional infrastructure construction and development for more than ten years in the future.In order to adapt to the energy saving and emission reduction and environment protection requirements, this article assesses the energy utilization and environmental impact of the project. The research results of this paper confirms that the results of this study have the characteristics of energy saving, and environmental impact compled with national standards, achieves the relevant national standards for the energy utilization and environmental protection..