Line data Source code
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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 ChillerExhaustAbsorption {
68 :
69 4 : struct ExhaustAbsorberSpecs : PlantComponent
70 : {
71 : // Members
72 : // Parts of Type that do not correspond with IDD definition
73 : bool Available = false; // need an array of logicals--load identifiers of available equipment
74 : bool ON = false; // simulate the machine at it's operating part load ratio
75 : bool InCoolingMode = false;
76 : bool InHeatingMode = false;
77 : // Part of Type that directly corresponds with IDD definition
78 : std::string Name; // user identifier
79 : Real64 NomCoolingCap = 0.0; // W - design nominal capacity of Absorber
80 : bool NomCoolingCapWasAutoSized = false; // true if nominal capacity was autosize on input
81 : Real64 NomHeatCoolRatio = 0.0; // ratio of heating to cooling capacity
82 : Real64 ThermalEnergyCoolRatio = 0.0; // ratio of thermal energy input to cooling output
83 : Real64 ThermalEnergyHeatRatio = 0.0; // ratio of thermal energy input to heating output
84 : Real64 ElecCoolRatio = 0.0; // ratio of electricity input to cooling output
85 : Real64 ElecHeatRatio = 0.0; // ratio of electricity input to heating output
86 : int ChillReturnNodeNum = 0; // Node number on the inlet side of the plant
87 : int ChillSupplyNodeNum = 0; // Node number on the outlet side of the plant
88 : bool ChillSetPointErrDone = false; // flag to report missing setpoint on CW outlet
89 : bool ChillSetPointSetToLoop = false; // flag to use overall loop setpoint
90 : int CondReturnNodeNum = 0; // Node number on the inlet side of the condenser
91 : int CondSupplyNodeNum = 0; // Node number on the outlet side of the condenser
92 : int HeatReturnNodeNum = 0; // absorber steam inlet node number, water side
93 : int HeatSupplyNodeNum = 0; // absorber steam outlet node number, water side
94 : bool HeatSetPointErrDone = false; // flag to report missing setpoint on HW outlet
95 : bool HeatSetPointSetToLoop = false; // flag to use overall loop setpoint
96 : Real64 MinPartLoadRat = 0.0; // min allowed operating frac full load
97 : Real64 MaxPartLoadRat = 0.0; // max allowed operating frac full load
98 : Real64 OptPartLoadRat = 0.0; // optimal operating frac full load
99 : Real64 TempDesCondReturn = 0.0; // design secondary loop fluid temperature at the Absorber condenser side inlet
100 : Real64 TempDesCHWSupply = 0.0; // design chilled water supply temperature
101 : Real64 EvapVolFlowRate = 0.0; // m**3/s - design nominal water volumetric flow rate through the evaporator
102 : bool EvapVolFlowRateWasAutoSized = false; // true if evaporator flow rate was autosize on input
103 : Real64 CondVolFlowRate = 0.0; // m**3/s - design nominal water volumetric flow rate through the condenser
104 : bool CondVolFlowRateWasAutoSized = false; // true if condenser flow rate was autosize on input
105 : Real64 HeatVolFlowRate = 0.0; // m**3/s - design nominal water volumetric flow rate through the heater side
106 : bool HeatVolFlowRateWasAutoSized = false; // true if hot water flow rate was autosize on input
107 : Real64 SizFac = 0.0; // sizing factor
108 : int CoolCapFTCurve = 0; // cooling capacity as a function of temperature curve (chilled water temp,
109 : // condenser water temp)
110 : int ThermalEnergyCoolFTCurve = 0; // Thermal Energy-Input-to cooling output Ratio Function of Temperature Curve (chilled
111 : // water temp, condenser water temp)
112 : int ThermalEnergyCoolFPLRCurve = 0; // Thermal Energy-Input-to cooling output Ratio Function of Part Load Ratio Curve
113 : int ElecCoolFTCurve = 0; // Electric-Input-to cooling output Ratio Function of Temperature Curve
114 : // (chilled water temp, condenser water temp)
115 : int ElecCoolFPLRCurve = 0; // Electric-Input-to cooling output Ratio Function of Part Load Ratio Curve
116 : int HeatCapFCoolCurve = 0; // Heating Capacity Function of Cooling Capacity Curve
117 : int ThermalEnergyHeatFHPLRCurve = 0; // Thermal Energy Input to heat output ratio during heating only function
118 : bool isEnterCondensTemp = false; // if using entering conderser water temperature is TRUE, exiting is FALSE
119 : bool isWaterCooled = false; // if water cooled it is TRUE
120 : Real64 CHWLowLimitTemp = 0.0; // Chilled Water Lower Limit Temperature
121 : int ExhaustAirInletNodeNum = 0; // Node number on Exhaust input from generator
122 : // Calculated design values
123 : Real64 DesCondMassFlowRate = 0.0; // design nominal mass flow rate of water through the condenser [kg/s]
124 : Real64 DesHeatMassFlowRate = 0.0; // design nominal mass flow rate of water through the hot water side [kg/s]
125 : Real64 DesEvapMassFlowRate = 0.0; // design nominal mass flow rate of water through chilled water side [kg/s]
126 : // other values used during simulation
127 : int DeltaTempCoolErrCount = 0; // error count for Delta Temp = 0 while cooling
128 : int DeltaTempHeatErrCount = 0; // error count for Delta Temp = 0 while heating
129 : int CondErrCount = 0; // error count for poor Condenser Supply Estimate
130 : bool PossibleSubcooling = false; // Flag to determine whether plant is overcooled
131 : // loop topology variables
132 : PlantLocation CWPlantLoc; // chilled water plant loop component index
133 : PlantLocation CDPlantLoc; // condenser water plant loop component index
134 : PlantLocation HWPlantLoc; // hot water plant loop component index
135 : GeneratorType CompType_Num = GeneratorType::Invalid; // Numeric designator for CompType (TypeOf)
136 : int ExhTempLTAbsLeavingTempIndex = 0; // index for exhaust potential less than thermal energy needed during cooling
137 : int ExhTempLTAbsLeavingHeatingTempIndex = 0; // index for exhaust potential less than thermal energy needed during heating
138 : int lCondWaterMassFlowRate_Index = 0; // index for condenser water mass flow rate too low recurring severe warning
139 : std::string TypeOf; // Generator type
140 : std::string ExhaustSourceName; // Generator type Name
141 : bool envrnInit = true;
142 : Real64 oldCondSupplyTemp = 0.0; // save the last iteration value of leaving condenser water temperature
143 :
144 : // Members from old report struct
145 : Real64 CoolingLoad = 0.0; // cooling load on the chiller (previously called QEvap)
146 : Real64 CoolingEnergy = 0.0; // variable to track total cooling load for period (was EvapEnergy)
147 : Real64 HeatingLoad = 0.0; // heating load on the chiller
148 : Real64 HeatingEnergy = 0.0; // heating energy
149 : Real64 TowerLoad = 0.0; // load on the cooling tower/condenser (previously called QCond)
150 : Real64 TowerEnergy = 0.0; // variable to track total tower load for a period (was CondEnergy)
151 : Real64 ThermalEnergyUseRate = 0.0; // instantaneous use of Exhaust for period
152 : Real64 ThermalEnergy = 0.0; // variable to track total ThermalEnergy used for a period
153 : Real64 CoolThermalEnergyUseRate = 0.0; // instantaneous use of Exhaust for period for cooling
154 : Real64 CoolThermalEnergy = 0.0; // variable to track total ThermalEnergy used for a period for cooling
155 : Real64 HeatThermalEnergyUseRate = 0.0; // instantaneous use of Exhaust for period for heating
156 : Real64 HeatThermalEnergy = 0.0; // variable to track total ThermalEnergy used for a period for heating
157 : Real64 ElectricPower = 0.0; // parasitic electric power used (was PumpingPower)
158 : Real64 ElectricEnergy = 0.0; // track the total electricity used for a period (was PumpingEnergy)
159 : Real64 CoolElectricPower = 0.0; // parasitic electric power used for cooling
160 : Real64 CoolElectricEnergy = 0.0; // track the total electricity used for a period for cooling
161 : Real64 HeatElectricPower = 0.0; // parasitic electric power used for heating
162 : Real64 HeatElectricEnergy = 0.0; // track the total electricity used for a period for heating
163 : Real64 ChillReturnTemp = 0.0; // reporting: evaporator inlet temperature (was EvapInletTemp)
164 : Real64 ChillSupplyTemp = 0.0; // reporting: evaporator outlet temperature (was EvapOutletTemp)
165 : Real64 ChillWaterFlowRate = 0.0; // reporting: evaporator mass flow rate (was Evapmdot)
166 : Real64 CondReturnTemp = 0.0; // reporting: condenser inlet temperature (was CondInletTemp)
167 : Real64 CondSupplyTemp = 0.0; // reporting: condenser outlet temperature (was CondOutletTemp)
168 : Real64 CondWaterFlowRate = 0.0; // reporting: condenser mass flow rate (was Condmdot)
169 : Real64 HotWaterReturnTemp = 0.0; // reporting: hot water return (inlet) temperature
170 : Real64 HotWaterSupplyTemp = 0.0; // reporting: hot water supply (outlet) temperature
171 : Real64 HotWaterFlowRate = 0.0; // reporting: hot water mass flow rate
172 : Real64 CoolPartLoadRatio = 0.0; // operating part load ratio (load/capacity for cooling)
173 : Real64 HeatPartLoadRatio = 0.0; // operating part load ratio (load/capacity for heating)
174 : Real64 CoolingCapacity = 0.0; // current capacity after temperature adjustment
175 : Real64 HeatingCapacity = 0.0; // current heating capacity
176 : Real64 FractionOfPeriodRunning = 0.0; // fraction of the time period that the unit is operating
177 : Real64 ThermalEnergyCOP = 0.0; // reporting: cooling output/ThermalEnergy input = CoolingLoad/CoolThermalEnergyUseRate
178 : Real64 ExhaustInTemp = 0.0; // reporting: Exhaust inlet temperature
179 : Real64 ExhaustInFlow = 0.0; // reporting: Exhaust Inlet Flow rate
180 : Real64 ExhHeatRecPotentialHeat = 0.0; // reporting: Heat Recovery Potential during heating
181 : Real64 ExhHeatRecPotentialCool = 0.0; // reporting: Heat Recovery Potential during cooling
182 :
183 : static PlantComponent *factory(EnergyPlusData &state, std::string const &objectName);
184 :
185 : void
186 : simulate(EnergyPlusData &state, const PlantLocation &calledFromLocation, bool FirstHVACIteration, Real64 &CurLoad, bool RunFlag) override;
187 :
188 : void getDesignCapacities(
189 : EnergyPlusData &state, const PlantLocation &calledFromLocation, Real64 &MaxLoad, Real64 &MinLoad, Real64 &OptLoad) override;
190 :
191 : void getSizingFactor(Real64 &SizFac) override;
192 :
193 : void onInitLoopEquip(EnergyPlusData &state, const PlantLocation &calledFromLocation) override;
194 :
195 : void oneTimeInit(EnergyPlusData &state) override;
196 :
197 : void oneTimeInit_new(EnergyPlusData &state) override;
198 :
199 : void getDesignTemperatures(Real64 &TempDesCondIn, Real64 &TempDesEvapOut) override;
200 :
201 : void initialize(EnergyPlusData &state);
202 :
203 : void setupOutputVariables(EnergyPlusData &state);
204 :
205 : void size(EnergyPlusData &state);
206 :
207 : void calcChiller(EnergyPlusData &state, Real64 &MyLoad);
208 :
209 : void calcHeater(EnergyPlusData &state, Real64 &MyLoad, bool RunFlag);
210 :
211 : void updateCoolRecords(EnergyPlusData &state, Real64 MyLoad, bool RunFlag);
212 :
213 : void updateHeatRecords(EnergyPlusData &state, Real64 MyLoad, bool RunFlag);
214 : };
215 :
216 : void GetExhaustAbsorberInput(EnergyPlusData &state);
217 :
218 : } // namespace ChillerExhaustAbsorption
219 :
220 1542 : struct ChillerExhaustAbsorptionData : BaseGlobalStruct
221 : {
222 : bool Sim_GetInput = true;
223 : Array1D<ChillerExhaustAbsorption::ExhaustAbsorberSpecs> ExhaustAbsorber;
224 :
225 0 : void clear_state() override
226 : {
227 0 : *this = ChillerExhaustAbsorptionData();
228 0 : }
229 : };
230 :
231 : } // namespace EnergyPlus
232 :
233 : #endif
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