The Study Of Heating Network's Controlling Strategy And Adjustment When Flux Indoor Change Suddenly

Along with the reformation of heating system, user become the main body of heat, can adjust heat flux by self demand. Thermostat's movement make system flux keep changing,so heating network circulate at variable-flow. This paper aim at new aptitude heat metering system's adjust mode,flux indoor change suddenly,analyse new system 's working condition changing characteristic,study the controlling strategy adapt to new system.This paper use computer calculate to simulate new system's working, make a simulation program to describe heating system working condition. It can easily simulate system and user's control and adjust movement, offer data to analyze new system's working condition changing characteristic and study the controlling strategy adapt to new system.The calculating data indicate that, new system's adjust mode make flux indoor change suddenly, and would result in heating network's working condition big influence, user's hydraulic maladjustment degree would exceed the allowed scope. In order to raise the hydraulic stability of the user, we fix self-operated differential pressure controlling valve at tube's thermodynamic entrance to keep tube's pressure difference stably. And the calculating data indicate that, network's stability would be raised. At the same time, to accommodate to the variety of system's flux and reduce working energy cost, the circulating water pump should working at regulating speed. Investigated a circulating water pump's difference respectively adopt keeping near place and distant place pressure difference constant under two kinds of control methods of working condition, analyzed the characteristics of these two kinds of control methods and apply scope.