Study On The Use Patterns And Optimization Of Residential Centralized Solar Domestic Hot Water System

Energy shortage,environmental pollution and climate warming have become the main contradiction that restricts the sustainable development of economy and society in our country.At present,the performance in popularization and application of the domestic centralized solar hot water system is not good,problems exist in many sectors,hot water costs high,low customer satisfaction,conventional energy consumption and so on.Through a large number of documents and engineering case data show that there is still room for improvement in system design and operation.Aiming at the above problems,this paper choose the aspects of design and operation,and centralized heat dispersing auxiliary heating system and centralized heat-centralized auxiliary heating system as the research object of common selection project,which summarized domestic hot water use patterns,and analyzed load regularity of seasonal centralized system in cold area.The results show that the design load is much larger than the user's demand load in the design process,meanwhile there is a mismatch between the user demand load and the system supply load during the operation.Therefore,a mathematical model is established for two centralized systems,and the reasonable operation strategy and the system form optimization scheme are given respectively.Through the simulation,the optimization scheme can effectively reduce the auxiliary energy consumption;for centralized heat-auxiliary heating system,this scheme optimize system design scheme and give the operation strategy,which can greatly reduce the loss of pipeline system,improve the system performance,save 63.65% consumption.The above research contents can provide support for improving the design and operation of the system,and improving the performance of solar water heating system and the actual operation effect.