Line data Source code
1 : // EnergyPlus, Copyright (c) 1996-2024, The Board of Trustees of the University of Illinois,
2 : // The Regents of the University of California, through Lawrence Berkeley National Laboratory
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47 :
48 : #ifndef Boilers_hh_INCLUDED
49 : #define Boilers_hh_INCLUDED
50 :
51 : #include <array>
52 :
53 : // ObjexxFCL Headers
54 : #include <ObjexxFCL/Array1D.hh>
55 :
56 : // EnergyPlus Headers
57 : #include <EnergyPlus/Data/BaseData.hh>
58 : #include <EnergyPlus/DataBranchAirLoopPlant.hh>
59 : #include <EnergyPlus/DataGlobalConstants.hh>
60 : #include <EnergyPlus/DataGlobals.hh>
61 : #include <EnergyPlus/EnergyPlus.hh>
62 : #include <EnergyPlus/Plant/DataPlant.hh>
63 : #include <EnergyPlus/PlantComponent.hh>
64 : #include <EnergyPlus/UtilityRoutines.hh>
65 :
66 : namespace EnergyPlus {
67 :
68 : // Forward declarations
69 : struct EnergyPlusData;
70 :
71 : namespace Boilers {
72 :
73 : // water temperature evaluation method
74 : enum class TempMode
75 : {
76 : Invalid = -1,
77 : NOTSET,
78 : ENTERINGBOILERTEMP,
79 : LEAVINGBOILERTEMP,
80 : Num
81 : };
82 :
83 : struct BoilerSpecs : PlantComponent
84 : {
85 : // Members
86 : std::string Name; // user identifier
87 : Constant::eFuel FuelType = Constant::eFuel::Invalid; // resource type assignment
88 : DataPlant::PlantEquipmentType Type = DataPlant::PlantEquipmentType::Invalid; // plant loop type identifier
89 : PlantLocation plantLoc{};
90 : bool Available = false; // TRUE if machine available in current time step
91 : bool ON = false; // TRUE: simulate the machine at it's operating part load ratio
92 : Real64 NomCap = 0.0; // W - design nominal capacity of Boiler
93 : bool NomCapWasAutoSized = false; // true if previous was set to autosize input
94 : Real64 NomEffic = 0.0; // boiler efficiency at design conditions
95 : Real64 TempDesBoilerOut = 0.0; // C - Boiler design outlet temperature
96 : DataPlant::FlowMode FlowMode = DataPlant::FlowMode::Invalid; // one of 3 modes for component flow during operation
97 : bool ModulatedFlowSetToLoop = false; // True if the setpoint is missing at the outlet node
98 : bool ModulatedFlowErrDone = false; // true if setpoint warning issued
99 : Real64 VolFlowRate = 0.0; // m3/s - Boiler water design volumetric flow rate
100 : bool VolFlowRateWasAutoSized = false; // true if previous was set to autosize input
101 : Real64 DesMassFlowRate = 0.0; // kg/s - Boiler water design mass flow rate
102 : Real64 MassFlowRate = 0.0; // kg/s - Boiler water mass flow rate
103 : Real64 SizFac = 0.0; // sizing factor
104 : int BoilerInletNodeNum = 0; // Node number at the boiler inlet
105 : int BoilerOutletNodeNum = 0; // Node number at the boiler outlet
106 : Real64 MinPartLoadRat = 0.0; // Minimum allowed operating part load ratio
107 : Real64 MaxPartLoadRat = 0.0; // Maximum allowed operating part load ratio
108 : Real64 OptPartLoadRat = 0.0; // Optimal operating part load ratio
109 : Real64 OperPartLoadRat = 0.0; // Actual operating part load ratio
110 : TempMode CurveTempMode = TempMode::NOTSET; // water temp to use in curve, switch between entering and leaving
111 : int EfficiencyCurvePtr = 0; // Index to efficiency curve
112 : Real64 TempUpLimitBoilerOut = 0.0; // C - Boiler outlet maximum temperature limit
113 : Real64 ParasiticElecLoad = 0.0; // W - Parasitic electric power (e.g. forced draft fan)
114 : Real64 ParasiticFuelConsumption = 0.0; // parasitic fuel consumption associated with the boiler (standing pilot light) [J]
115 : Real64 ParasiticFuelRate = 0.0; // avg. parasitic fuel consumption rate with the gas boiler (standing pilot light) [W]
116 : Real64 ParasiticFuelCapacity = 0.0; // capacity of parasitic fuel consumption rate, input by user [W]
117 : int EffCurveOutputError = 0; // efficiency curve output <=0 recurring warning error counter
118 : int EffCurveOutputIndex = 0; // efficiency curve output <=0 recurring warning error message index
119 : int CalculatedEffError = 0; // calculated efficiency >1.1 recurring warning error counter
120 : int CalculatedEffIndex = 0; // calculated efficiency >1.1 recurring warning error message index
121 : bool IsThisSized = false; // TRUE if sizing is done
122 : // Operational fault parameters
123 : bool FaultyBoilerFoulingFlag = false; // True if the boiler has fouling fault
124 : int FaultyBoilerFoulingIndex = 0; // Index of the fault object corresponding to the boiler
125 : Real64 FaultyBoilerFoulingFactor = 1.0; // Boiler fouling factor
126 : std::string EndUseSubcategory; // identifier use for the end use subcategory
127 : bool MyEnvrnFlag = true;
128 : bool MyFlag = true;
129 :
130 : Real64 FuelUsed = 0.0; // W - Boiler fuel used
131 : Real64 ParasiticElecPower = 0.0; // W - Parasitic electrical power (e.g. forced draft fan)
132 : Real64 BoilerLoad = 0.0; // W - Boiler Load
133 : Real64 BoilerMassFlowRate = 0.0; // kg/s - Boiler mass flow rate
134 : Real64 BoilerOutletTemp = 0.0; // W - Boiler outlet temperature
135 : Real64 BoilerPLR = 0.0; // Boiler operating part-load ratio
136 : Real64 BoilerEff = 0.0; // Boiler operating efficiency
137 :
138 : Real64 BoilerEnergy = 0.0; // J - Boiler energy integrated over time
139 : Real64 FuelConsumed = 0.0; // J - Boiler Fuel consumed integrated over time
140 : Real64 BoilerInletTemp = 0.0; // C - Boiler inlet temperature
141 : Real64 ParasiticElecConsumption = 0.0; // J - Parasitic Electrical Consumption (e.g. forced draft fan)
142 :
143 : void simulate([[maybe_unused]] EnergyPlusData &state,
144 : const PlantLocation &calledFromLocation,
145 : bool FirstHVACIteration,
146 : Real64 &CurLoad,
147 : bool RunFlag) override;
148 :
149 : void getDesignCapacities(EnergyPlusData &state,
150 : [[maybe_unused]] const PlantLocation &calledFromLocation,
151 : Real64 &MaxLoad,
152 : Real64 &MinLoad,
153 : Real64 &OptLoad) override;
154 :
155 : void getSizingFactor(Real64 &SizFac) override;
156 :
157 : void onInitLoopEquip([[maybe_unused]] EnergyPlusData &state, [[maybe_unused]] const PlantLocation &calledFromLocation) override;
158 :
159 : void SetupOutputVars(EnergyPlusData &state);
160 :
161 : void oneTimeInit(EnergyPlusData &state) override;
162 :
163 : void initEachEnvironment(EnergyPlusData &state);
164 :
165 : void InitBoiler(EnergyPlusData &state); // number of the current boiler being simulated
166 :
167 : void SizeBoiler(EnergyPlusData &state);
168 :
169 : void CalcBoilerModel(EnergyPlusData &state,
170 : Real64 MyLoad, // W - hot water demand to be met by boiler
171 : bool RunFlag, // TRUE if boiler operating
172 : DataBranchAirLoopPlant::ControlType EquipFlowCtrl // Flow control mode for the equipment
173 : );
174 :
175 : void UpdateBoilerRecords(EnergyPlusData &state,
176 : Real64 MyLoad, // boiler operating load
177 : bool RunFlag // boiler on when TRUE
178 : );
179 :
180 : static BoilerSpecs *factory(EnergyPlusData &state, std::string const &objectName);
181 : };
182 :
183 : void GetBoilerInput(EnergyPlusData &state);
184 :
185 : } // namespace Boilers
186 :
187 : struct BoilersData : BaseGlobalStruct
188 : {
189 : bool getBoilerInputFlag = true;
190 : Array1D<Boilers::BoilerSpecs> Boiler;
191 :
192 796 : void init_state([[maybe_unused]] EnergyPlusData &state) override
193 : {
194 796 : }
195 :
196 0 : void clear_state() override
197 : {
198 0 : new (this) BoilersData();
199 0 : }
200 : };
201 :
202 : } // namespace EnergyPlus
203 :
204 : #endif
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