Collaborative Optimization Of The Reclaimed Water Source Heat Pump Heating System Based On The Change Of The Characteristics Of Pipe Networks

With the rapid development of national economy,the energy crisis and environmental pollution have become the main issues affecting economic development.In order to save energy and reduce the environmental influence caused by traditional heating means,more and more buildings using reclaimed water source heat pump system to meet the demand of heating in winter.Reclaimed water contains a large amount of low grade heat energy,environment friendly and water stability,extraction of reclaimed water heat in winter for heating buildings can effectively reduce environmental pollution and appropriate the mitigation status of energy shortage.But with reclaimed water source heat pump system application,also exposed many problems,the most prominent problem is the system running mismanagement,failed to make the system work in the best state,thereby causing waste of energy.Reclaimed water source heat pump system is designed according to the design load of buildings,but in the actual operational process,most of the time is running at partial load condition.Therefore,it is important for us to know how to coordinate the running status of energy-using equipments efficiently and reasonably as well as determine the optimal working point of system operation.It plays a vital role in saving energy and improving utilization of energy.This thesis based on the theoretical analysis and sample data.Firstly,the thesis adopts the method of parameter identification,in order to conduct mathematical modeling of the major part,analyzing distribution system,heat pump and the end heat transfer model,and simulated the energy consumption characteristics of energy-using equipment in the system.Secondly,through analysis of a distribution system under the off-design operation adjustment method,combined with the instance using the valve throttling and pump variable speed regulation.Thirdly,simulation computation in the distribution system and the end of fitting relation and heat pump units is carried out based on the instance.Finally,by analyzing of energy-using equipment and seeking the collaborative relationship of each subsystem,mathematical description of collaborative optimization of system is established.Description the evaporator inlet temperature is the critical heat pump system energy consumption.The author uses the computer programming to solve the problem of system collaborative optimization as well as gets the collaborative optimization results of reclaimed water source heat pump system and the actual operation strategy.Compared with other operation strategies,collaborative optimization control strategy has great energy-saving space.