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47 :
48 : #ifndef ChillerAbsorption_hh_INCLUDED
49 : #define ChillerAbsorption_hh_INCLUDED
50 :
51 : // ObjexxFCL Headers
52 : #include <ObjexxFCL/Array1D.hh>
53 :
54 : // EnergyPlus Headers
55 : #include <EnergyPlus/Data/BaseData.hh>
56 : #include <EnergyPlus/DataBranchAirLoopPlant.hh>
57 : #include <EnergyPlus/DataGlobals.hh>
58 : #include <EnergyPlus/EnergyPlus.hh>
59 : #include <EnergyPlus/Plant/DataPlant.hh>
60 : #include <EnergyPlus/PlantComponent.hh>
61 :
62 : namespace EnergyPlus {
63 :
64 : // Forward declarations
65 : struct EnergyPlusData;
66 :
67 : namespace ChillerAbsorption {
68 :
69 2 : struct ReportVars
70 : {
71 : // Members
72 : Real64 PumpingPower = 0.0; // reporting: electric pumping power
73 : Real64 QGenerator = 0.0; // reporting: steam heat transfer rate
74 : Real64 QEvap = 0.0; // reporting: evaporator heat transfer rate
75 : Real64 QCond = 0.0; // reporting: condenser heat transfer rate
76 : Real64 PumpingEnergy = 0.0; // reporting: electric pumping power
77 : Real64 GeneratorEnergy = 0.0; // reporting: steam heat transfer rate
78 : Real64 EvapEnergy = 0.0; // reporting: evaporator heat transfer rate
79 : Real64 CondEnergy = 0.0; // reporting: condenser heat transfer rate
80 : Real64 CondInletTemp = 0.0; // reporting: condenser inlet temperature
81 : Real64 EvapInletTemp = 0.0; // reporting: evaporator inlet temperature
82 : Real64 CondOutletTemp = 0.0; // reporting: condenser outlet temperature
83 : Real64 EvapOutletTemp = 0.0; // reporting: evaporator outlet temperature
84 : Real64 Evapmdot = 0.0; // reporting: evaporator mass flow rate
85 : Real64 Condmdot = 0.0; // reporting: condenser mass flow rate
86 : Real64 Genmdot = 0.0; // reporting: generator mass flow rate when connected to plant
87 : Real64 SteamMdot = 0.0; // reporting: steam mass flow rate
88 : Real64 ActualCOP = 0.0; // reporting: coefficient of performance = QEvap/QGenerator
89 : };
90 :
91 8 : struct BLASTAbsorberSpecs : PlantComponent
92 : {
93 : // Members
94 : std::string Name; // user identifier
95 : bool Available = false; // need an array of logicals--load identifiers of available equipment
96 : bool ON = false; // simulate the machine at it's operating part load ratio
97 : Real64 NomCap = 0.0; // W - design nominal capacity of Absorber
98 : bool NomCapWasAutoSized = false; // true if Nominal capacity was autosize on input
99 : Real64 NomPumpPower = 0.0; // W - design nominal capacity of Absorber
100 : bool NomPumpPowerWasAutoSized = false; // true if nominal pump power was autosize on input
101 : DataPlant::FlowMode FlowMode = DataPlant::FlowMode::Invalid; // one of 3 modes for component flow during operation
102 : bool ModulatedFlowSetToLoop = false; // True if the setpoint is missing at the outlet node
103 : bool ModulatedFlowErrDone = false; // true if setpoint warning issued
104 : Real64 EvapVolFlowRate = 0.0; // m3/s - design water volumetric flow rate through the evaporator
105 : bool EvapVolFlowRateWasAutoSized = false; // true if evaporator flow rate was autosize on input
106 : Real64 CondVolFlowRate = 0.0; // m3/s - design water volumetric flow rate through the condenser
107 : bool CondVolFlowRateWasAutoSized = false; // true if condenser flow rate was autosize on input
108 : Real64 EvapMassFlowRateMax = 0.0; // Max Design Evaporator Mass Flow Rate converted from Volume Flow Rate
109 : Real64 CondMassFlowRateMax = 0.0; // Max Design Condenser Mass Flow Rate [kg/s]
110 : Real64 GenMassFlowRateMax = 0.0; // Max Design Generator Mass Flow Rate converted from Volume Flow Rate
111 : Real64 SizFac = 0.0; // Sizing factor
112 : int EvapInletNodeNum = 0; // Node number on the inlet side of the plant
113 : int EvapOutletNodeNum = 0; // Node number on the outlet side of the plant
114 : int CondInletNodeNum = 0; // Node number on the inlet side of the condenser
115 : int CondOutletNodeNum = 0; // Node number on the outlet side of the condenser
116 : int GeneratorInletNodeNum = 0; // absorber steam inlet node number, water side
117 : int GeneratorOutletNodeNum = 0; // absorber steam outlet node number, water side
118 : Real64 MinPartLoadRat = 0.0; // (BLAST MIN) min allowed operating frac full load
119 : Real64 MaxPartLoadRat = 0.0; // (BLAST MAX) max allowed operating frac full load
120 : Real64 OptPartLoadRat = 0.0; // (BLAST BEST) optimal operating frac full load
121 : Real64 TempDesCondIn = 0.0; // C - (BLAST ADJTC(1)The design secondary loop fluid
122 : // temperature at the Absorber condenser side inlet
123 : std::array<Real64, 3> SteamLoadCoef = {0.0}; // (BLAST RPWRC() ) coeff of full load poly. fit
124 : std::array<Real64, 3> PumpPowerCoef = {0.0}; // coeff of pumping power poly. fit
125 : Real64 TempLowLimitEvapOut = 0.0; // C - low temperature shut off
126 : int ErrCount2 = 0; // error counter
127 : DataLoopNode::NodeFluidType GenHeatSourceType = DataLoopNode::NodeFluidType::Blank; // Generator heat source type
128 : Real64 GeneratorVolFlowRate = 0.0; // m3/s - hot water volumetric flow rate through generator
129 : bool GeneratorVolFlowRateWasAutoSized = false; // true if hot water flow was autosize on input
130 : Real64 GeneratorSubcool = 0.0; // amount of subcooling in steam generator
131 : int SteamFluidIndex = 0; // index to generator fluid type
132 : Real64 GeneratorDeltaTemp = -99999.0; // C - generator fluid temperature difference (water only)
133 : bool GeneratorDeltaTempWasAutoSized = true; // true if generator delta T was autosize on input
134 : PlantLocation CWPlantLoc; // chilled water plant loop index number
135 : PlantLocation CDPlantLoc; // condenser water plant loop index number
136 : PlantLocation GenPlantLoc; // generator water plant loop index number
137 : bool FaultyChillerSWTFlag = false; // True if the chiller has SWT sensor fault
138 : int FaultyChillerSWTIndex = 0; // Index of the fault object corresponding to the chiller
139 : Real64 FaultyChillerSWTOffset = 0.0; // Chiller SWT sensor offset
140 : bool PossibleSubcooling = false; // flag to indicate chiller is doing less cooling that requested
141 : Real64 CondMassFlowRate = 0.0; // Kg/s - condenser mass flow rate, water side
142 : Real64 EvapMassFlowRate = 0.0; // Kg/s - evaporator mass flow rate, water side
143 : Real64 SteamMassFlowRate = 0.0; // Kg/s - steam mass flow rate, water side
144 : Real64 CondOutletTemp = 0.0; // C - condenser outlet temperature, water side
145 : Real64 EvapOutletTemp = 0.0; // C - evaporator outlet temperature, water side
146 : Real64 GenOutletTemp = 0.0; // C - generator fluid outlet temperature
147 : Real64 SteamOutletEnthalpy = 0.0; // J/kg - generator fluid outlet enthalpy
148 : Real64 PumpingPower = 0.0; // W - rate of Absorber energy use
149 : Real64 PumpingEnergy = 0.0; // J - Absorber energy use
150 : Real64 QGenerator = 0.0; // W - rate of Absorber steam use
151 : Real64 GeneratorEnergy = 0.0; // J - Absorber steam use
152 : Real64 QEvaporator = 0.0; // W - rate of heat transfer to the evaporator coil
153 : Real64 EvaporatorEnergy = 0.0; // J - heat transfer to the evaporator coil
154 : Real64 QCondenser = 0.0; // W - rate of heat transfer to the condenser coil
155 : Real64 CondenserEnergy = 0.0; // J - heat transfer to the condenser coil
156 : bool MyOneTimeFlag = true;
157 : bool MyEnvrnFlag = true;
158 : bool GenInputOutputNodesUsed = false;
159 : ReportVars Report;
160 : DataBranchAirLoopPlant::ControlType EquipFlowCtrl = DataBranchAirLoopPlant::ControlType::Invalid;
161 :
162 : static PlantComponent *factory(EnergyPlusData &state, std::string const &objectName);
163 :
164 : void simulate([[maybe_unused]] EnergyPlusData &state,
165 : const PlantLocation &calledFromLocation,
166 : bool FirstHVACIteration,
167 : Real64 &CurLoad,
168 : bool RunFlag) override;
169 :
170 : void onInitLoopEquip([[maybe_unused]] EnergyPlusData &state, const PlantLocation &calledFromLocation) override;
171 :
172 : void oneTimeInit(EnergyPlusData &state) override;
173 :
174 : void initEachEnvironment(EnergyPlusData &state);
175 :
176 : void getDesignCapacities(
177 : EnergyPlusData &state, const PlantLocation &calledFromLocation, Real64 &MaxLoad, Real64 &MinLoad, Real64 &OptLoad) override;
178 :
179 : void getDesignTemperatures(Real64 &tempDesCondIn, Real64 &TempDesEvapOut) override;
180 :
181 : void getSizingFactor(Real64 &sizFac) override;
182 :
183 : void initialize(EnergyPlusData &state, bool RunFlag, Real64 MyLoad);
184 :
185 : void setupOutputVars(EnergyPlusData &state);
186 :
187 : void sizeChiller(EnergyPlusData &state);
188 :
189 : void calculate(EnergyPlusData &state, Real64 &MyLoad, bool RunFlag);
190 :
191 : void updateRecords(EnergyPlusData &state, Real64 MyLoad, bool RunFlag);
192 : };
193 :
194 : void GetBLASTAbsorberInput(EnergyPlusData &state);
195 :
196 : } // namespace ChillerAbsorption
197 :
198 1542 : struct ChillerAbsorberData : BaseGlobalStruct
199 : {
200 : bool getInput = true;
201 : Array1D<ChillerAbsorption::BLASTAbsorberSpecs> absorptionChillers;
202 :
203 0 : void clear_state() override
204 : {
205 0 : *this = ChillerAbsorberData();
206 0 : }
207 : };
208 :
209 : } // namespace EnergyPlus
210 :
211 : #endif
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