modelSteamGenerator_L3
Extends from ClaRa.SubSystems.Boiler.CoalSupplyBoiler_base (The coal mills and the boiler), ClaRa.Basics.Icons.ComplexityLevel (Displays the complexity level inside model icon ).
Information
This steam generator is based on lumped balance equations for mass and energy (for each of live steam generation and reheat one set) and on transfer functions and characteristic maps for heat release and pressure losses. The aim of this model is to capture the boiler's main dynamics without allowing deep insight into the process. Thus, the model merges the evaporation and superheat and place the spray injectors (one for each of the live steam generation and the reheater) at the very end of the boiler. This simplification does not allow detailed investigations of the control of steam temperature and feedwater mass flow (applying an enthalpy correction).
Usage advices:
- The default parameter set do not refer to any real plant
- The injector spray is mixed right befor the livesteam connector and the reheat_out connector, respectively
- The spray attemperators are ideal, i.e. have no storage behavior
- The last superheater bundles are placed before the spray injector
- The pressure loss between live steam and HPInjector is 15 % of the HP pressure loss (p_FW - p_LS)
- The pressure loss between hot reheated steam and IPInjector is 50 % of the IP pressure loss (p_cRH - p_hRH)