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47 :
48 : #ifndef ChillerExhaustAbsorption_hh_INCLUDED
49 : #define ChillerExhaustAbsorption_hh_INCLUDED
50 :
51 : // ObjexxFCL Headers
52 : #include <ObjexxFCL/Array1D.hh>
53 :
54 : // EnergyPlus Headers
55 : #include <EnergyPlus/Data/BaseData.hh>
56 : #include <EnergyPlus/DataGlobals.hh>
57 : #include <EnergyPlus/ElectricPowerServiceManager.hh>
58 : #include <EnergyPlus/EnergyPlus.hh>
59 : #include <EnergyPlus/Plant/PlantLocation.hh>
60 : #include <EnergyPlus/PlantComponent.hh>
61 :
62 : namespace EnergyPlus {
63 :
64 : // Forward declarations
65 : struct EnergyPlusData;
66 :
67 : namespace Curve {
68 : struct Curve;
69 : }
70 :
71 : namespace ChillerExhaustAbsorption {
72 :
73 : struct ExhaustAbsorberSpecs : PlantComponent
74 : {
75 : // Members
76 : // Parts of Type that do not correspond with IDD definition
77 : bool Available = false; // need an array of logicals--load identifiers of available equipment
78 : bool ON = false; // simulate the machine at it's operating part load ratio
79 : bool InCoolingMode = false;
80 : bool InHeatingMode = false;
81 : // Part of Type that directly corresponds with IDD definition
82 : std::string Name; // user identifier
83 : Real64 NomCoolingCap = 0.0; // W - design nominal capacity of Absorber
84 : bool NomCoolingCapWasAutoSized = false; // true if nominal capacity was autosize on input
85 : Real64 NomHeatCoolRatio = 0.0; // ratio of heating to cooling capacity
86 : Real64 ThermalEnergyCoolRatio = 0.0; // ratio of thermal energy input to cooling output
87 : Real64 ThermalEnergyHeatRatio = 0.0; // ratio of thermal energy input to heating output
88 : Real64 ElecCoolRatio = 0.0; // ratio of electricity input to cooling output
89 : Real64 ElecHeatRatio = 0.0; // ratio of electricity input to heating output
90 : int ChillReturnNodeNum = 0; // Node number on the inlet side of the plant
91 : int ChillSupplyNodeNum = 0; // Node number on the outlet side of the plant
92 : bool ChillSetPointErrDone = false; // flag to report missing setpoint on CW outlet
93 : bool ChillSetPointSetToLoop = false; // flag to use overall loop setpoint
94 : int CondReturnNodeNum = 0; // Node number on the inlet side of the condenser
95 : int CondSupplyNodeNum = 0; // Node number on the outlet side of the condenser
96 : int HeatReturnNodeNum = 0; // absorber steam inlet node number, water side
97 : int HeatSupplyNodeNum = 0; // absorber steam outlet node number, water side
98 : bool HeatSetPointErrDone = false; // flag to report missing setpoint on HW outlet
99 : bool HeatSetPointSetToLoop = false; // flag to use overall loop setpoint
100 : Real64 MinPartLoadRat = 0.0; // min allowed operating frac full load
101 : Real64 MaxPartLoadRat = 0.0; // max allowed operating frac full load
102 : Real64 OptPartLoadRat = 0.0; // optimal operating frac full load
103 : Real64 TempDesCondReturn = 0.0; // design secondary loop fluid temperature at the Absorber condenser side inlet
104 : Real64 TempDesCHWSupply = 0.0; // design chilled water supply temperature
105 : Real64 EvapVolFlowRate = 0.0; // m**3/s - design nominal water volumetric flow rate through the evaporator
106 : bool EvapVolFlowRateWasAutoSized = false; // true if evaporator flow rate was autosize on input
107 : Real64 CondVolFlowRate = 0.0; // m**3/s - design nominal water volumetric flow rate through the condenser
108 : bool CondVolFlowRateWasAutoSized = false; // true if condenser flow rate was autosize on input
109 : Real64 HeatVolFlowRate = 0.0; // m**3/s - design nominal water volumetric flow rate through the heater side
110 : bool HeatVolFlowRateWasAutoSized = false; // true if hot water flow rate was autosize on input
111 : Real64 SizFac = 0.0; // sizing factor
112 : Curve::Curve *CoolCapFTCurve = nullptr; // cooling capacity as a function of temperature curve (chilled water temp,
113 : // condenser water temp)
114 : Curve::Curve *ThermalEnergyCoolFTCurve = nullptr; // Thermal Energy-Input-to cooling output Ratio Function of Temperature Curve (chilled
115 : // water temp, condenser water temp)
116 : Curve::Curve *ThermalEnergyCoolFPLRCurve = nullptr; // Thermal Energy-Input-to cooling output Ratio Function of Part Load Ratio Curve
117 : Curve::Curve *ElecCoolFTCurve = nullptr; // Electric-Input-to cooling output Ratio Function of Temperature Curve
118 : // (chilled water temp, condenser water temp)
119 : Curve::Curve *ElecCoolFPLRCurve = nullptr; // Electric-Input-to cooling output Ratio Function of Part Load Ratio Curve
120 : Curve::Curve *HeatCapFCoolCurve = nullptr; // Heating Capacity Function of Cooling Capacity Curve
121 : Curve::Curve *ThermalEnergyHeatFHPLRCurve = nullptr; // Thermal Energy Input to heat output ratio during heating only function
122 : bool isEnterCondensTemp = false; // if using entering conderser water temperature is TRUE, exiting is FALSE
123 : bool isWaterCooled = false; // if water cooled it is TRUE
124 : Real64 CHWLowLimitTemp = 0.0; // Chilled Water Lower Limit Temperature
125 : int ExhaustAirInletNodeNum = 0; // Node number on Exhaust input from generator
126 : // Calculated design values
127 : Real64 DesCondMassFlowRate = 0.0; // design nominal mass flow rate of water through the condenser [kg/s]
128 : Real64 DesHeatMassFlowRate = 0.0; // design nominal mass flow rate of water through the hot water side [kg/s]
129 : Real64 DesEvapMassFlowRate = 0.0; // design nominal mass flow rate of water through chilled water side [kg/s]
130 : // other values used during simulation
131 : int DeltaTempCoolErrCount = 0; // error count for Delta Temp = 0 while cooling
132 : int DeltaTempHeatErrCount = 0; // error count for Delta Temp = 0 while heating
133 : int CondErrCount = 0; // error count for poor Condenser Supply Estimate
134 : bool PossibleSubcooling = false; // Flag to determine whether plant is overcooled
135 : // loop topology variables
136 : PlantLocation CWPlantLoc; // chilled water plant loop component index
137 : PlantLocation CDPlantLoc; // condenser water plant loop component index
138 : PlantLocation HWPlantLoc; // hot water plant loop component index
139 : GeneratorType CompType_Num = GeneratorType::Invalid; // Numeric designator for CompType (TypeOf)
140 : int ExhTempLTAbsLeavingTempIndex = 0; // index for exhaust potential less than thermal energy needed during cooling
141 : int ExhTempLTAbsLeavingHeatingTempIndex = 0; // index for exhaust potential less than thermal energy needed during heating
142 : int lCondWaterMassFlowRate_Index = 0; // index for condenser water mass flow rate too low recurring severe warning
143 : std::string TypeOf; // Generator type
144 : std::string ExhaustSourceName; // Generator type Name
145 : bool envrnInit = true;
146 : Real64 oldCondSupplyTemp = 0.0; // save the last iteration value of leaving condenser water temperature
147 :
148 : // Members from old report struct
149 : Real64 CoolingLoad = 0.0; // cooling load on the chiller (previously called QEvap)
150 : Real64 CoolingEnergy = 0.0; // variable to track total cooling load for period (was EvapEnergy)
151 : Real64 HeatingLoad = 0.0; // heating load on the chiller
152 : Real64 HeatingEnergy = 0.0; // heating energy
153 : Real64 TowerLoad = 0.0; // load on the cooling tower/condenser (previously called QCond)
154 : Real64 TowerEnergy = 0.0; // variable to track total tower load for a period (was CondEnergy)
155 : Real64 ThermalEnergyUseRate = 0.0; // instantaneous use of Exhaust for period
156 : Real64 ThermalEnergy = 0.0; // variable to track total ThermalEnergy used for a period
157 : Real64 CoolThermalEnergyUseRate = 0.0; // instantaneous use of Exhaust for period for cooling
158 : Real64 CoolThermalEnergy = 0.0; // variable to track total ThermalEnergy used for a period for cooling
159 : Real64 HeatThermalEnergyUseRate = 0.0; // instantaneous use of Exhaust for period for heating
160 : Real64 HeatThermalEnergy = 0.0; // variable to track total ThermalEnergy used for a period for heating
161 : Real64 ElectricPower = 0.0; // parasitic electric power used (was PumpingPower)
162 : Real64 ElectricEnergy = 0.0; // track the total electricity used for a period (was PumpingEnergy)
163 : Real64 CoolElectricPower = 0.0; // parasitic electric power used for cooling
164 : Real64 CoolElectricEnergy = 0.0; // track the total electricity used for a period for cooling
165 : Real64 HeatElectricPower = 0.0; // parasitic electric power used for heating
166 : Real64 HeatElectricEnergy = 0.0; // track the total electricity used for a period for heating
167 : Real64 ChillReturnTemp = 0.0; // reporting: evaporator inlet temperature (was EvapInletTemp)
168 : Real64 ChillSupplyTemp = 0.0; // reporting: evaporator outlet temperature (was EvapOutletTemp)
169 : Real64 ChillWaterFlowRate = 0.0; // reporting: evaporator mass flow rate (was Evapmdot)
170 : Real64 CondReturnTemp = 0.0; // reporting: condenser inlet temperature (was CondInletTemp)
171 : Real64 CondSupplyTemp = 0.0; // reporting: condenser outlet temperature (was CondOutletTemp)
172 : Real64 CondWaterFlowRate = 0.0; // reporting: condenser mass flow rate (was Condmdot)
173 : Real64 HotWaterReturnTemp = 0.0; // reporting: hot water return (inlet) temperature
174 : Real64 HotWaterSupplyTemp = 0.0; // reporting: hot water supply (outlet) temperature
175 : Real64 HotWaterFlowRate = 0.0; // reporting: hot water mass flow rate
176 : Real64 CoolPartLoadRatio = 0.0; // operating part load ratio (load/capacity for cooling)
177 : Real64 HeatPartLoadRatio = 0.0; // operating part load ratio (load/capacity for heating)
178 : Real64 CoolingCapacity = 0.0; // current capacity after temperature adjustment
179 : Real64 HeatingCapacity = 0.0; // current heating capacity
180 : Real64 FractionOfPeriodRunning = 0.0; // fraction of the time period that the unit is operating
181 : Real64 ThermalEnergyCOP = 0.0; // reporting: cooling output/ThermalEnergy input = CoolingLoad/CoolThermalEnergyUseRate
182 : Real64 ExhaustInTemp = 0.0; // reporting: Exhaust inlet temperature
183 : Real64 ExhaustInFlow = 0.0; // reporting: Exhaust Inlet Flow rate
184 : Real64 ExhHeatRecPotentialHeat = 0.0; // reporting: Heat Recovery Potential during heating
185 : Real64 ExhHeatRecPotentialCool = 0.0; // reporting: Heat Recovery Potential during cooling
186 :
187 : static ExhaustAbsorberSpecs *factory(EnergyPlusData &state, std::string const &objectName);
188 :
189 : void
190 : simulate(EnergyPlusData &state, const PlantLocation &calledFromLocation, bool FirstHVACIteration, Real64 &CurLoad, bool RunFlag) override;
191 :
192 : void getDesignCapacities(
193 : EnergyPlusData &state, const PlantLocation &calledFromLocation, Real64 &MaxLoad, Real64 &MinLoad, Real64 &OptLoad) override;
194 :
195 : void getSizingFactor(Real64 &SizFac) override;
196 :
197 : void onInitLoopEquip(EnergyPlusData &state, const PlantLocation &calledFromLocation) override;
198 :
199 : void oneTimeInit(EnergyPlusData &state) override;
200 :
201 : void oneTimeInit_new(EnergyPlusData &state) override;
202 :
203 : void getDesignTemperatures(Real64 &TempDesCondIn, Real64 &TempDesEvapOut) override;
204 :
205 : void initialize(EnergyPlusData &state);
206 :
207 : void setupOutputVariables(EnergyPlusData &state);
208 :
209 : void size(EnergyPlusData &state);
210 :
211 : void calcChiller(EnergyPlusData &state, Real64 &MyLoad);
212 :
213 : void calcHeater(EnergyPlusData &state, Real64 &MyLoad, bool RunFlag);
214 :
215 : void updateCoolRecords(EnergyPlusData &state, Real64 MyLoad, bool RunFlag);
216 :
217 : void updateHeatRecords(EnergyPlusData &state, Real64 MyLoad, bool RunFlag);
218 : };
219 :
220 : void GetExhaustAbsorberInput(EnergyPlusData &state);
221 :
222 : } // namespace ChillerExhaustAbsorption
223 :
224 : struct ChillerExhaustAbsorptionData : BaseGlobalStruct
225 : {
226 : bool Sim_GetInput = true;
227 : Array1D<ChillerExhaustAbsorption::ExhaustAbsorberSpecs> ExhaustAbsorber;
228 :
229 2126 : void init_constant_state([[maybe_unused]] EnergyPlusData &state) override
230 : {
231 2126 : }
232 :
233 1152 : void init_state([[maybe_unused]] EnergyPlusData &state) override
234 : {
235 1152 : }
236 :
237 2100 : void clear_state() override
238 : {
239 2100 : new (this) ChillerExhaustAbsorptionData();
240 2100 : }
241 : };
242 :
243 : } // namespace EnergyPlus
244 :
245 : #endif
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