Analysis And Operation Optimization Of A Multi-energy Complementary District Energy Station Cooling Performance

Compared with traditional heating systems and air conditioning systems,district energy system has the characteristics of high energy efficiency and strong environmental friendliness.a fitting operation strategy can effectively improve the economy and environmental protection of district energy system.However,the monitoring and operation of large-scale district energy system is mostly based on the data feedback during operation,and then the system is scheduled based on the experience of the staff,which has many shortcomings.No.3 energy stations in He Fei Binhu region energy system for the engineering example,combined with the project's current ground-source-heat-pump system to run live detailed parameters and other systems and equipment,through the optimization of the economic target,based on the measured performance curve with the user operation optimization model of the load characteristics of ground source heat pump system and test verification,and according to the 3rd station is under construction and will be put into operation can coupling system to run the simulation analysis and comparing to the ground source heat pump operation mode alone its operation characteristics and economy in stages,specific content is as follows:This paper introduces the general situation of binhu region energy systems and 3stations in this paper,we study project of concrete structure and operation mode,combined with a lot of ground source heat pump system in the process of actual operation temperature of power and energy consumption data,establishing the actual user conditions of ground source heat pump energy consumption model of the host,and connecting with the actual operation of temperature and flow rate data for energy standing outside the insulation performance of the head of network computing analysis Director of network storage performance is used to establish balance between power station cooling characteristics with users,to head the cold quantity balance as the core,establish characteristic under the hourly load to economy operation strategy for the optimization goal and the quantity of energy station of the hourly cooling energy consumption calculation model and according to the actual user load characteristics of the sample period,and give input to predict load operation strategy,operation results show that the operating cost and energy consumption is higher than the theoretical value,but the contrast energy station operation strategy,current section rate reached 11.1%,the energy saving rate reached 7.8%.Based on all types of building areas within the design service scope of the energy station,combined with field observation,various typical building models were established,corresponding parameters and design values were selected in combination with the codes and actual conditions,and software was used to simulate their year-round load characteristics to generate virtual load-bearing buildings considering the same utilization rate.According to the CCHP system,duplex status chiller unit and ice storage system will be put into use in the No.3 energy station,the ground source heat pump running strategy algorithm model is modified and simulated operation into the performance parameters of multiple subsystems,and the results show that the virtual load building75% compared with 50% load rate of ground source heat pump cooling alone,section rate reached 10.9% and 11.2%,respectively,under 25% load rate section rate has reached 5%,showing a efficiency advantage of multi-energy system under the condition of high load rate comparing the single GSHP system cooling.Meanwhile,provides a reference for the operation strategy of multi-energy coupling cooling in No.3 energy station.