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47 :
48 : #ifndef HVACSingleDuctInduc_hh_INCLUDED
49 : #define HVACSingleDuctInduc_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/EnergyPlus.hh>
58 : #include <EnergyPlus/Plant/Enums.hh>
59 :
60 : namespace EnergyPlus {
61 :
62 : // Forward declarations
63 : struct EnergyPlusData;
64 :
65 : namespace HVACSingleDuctInduc {
66 :
67 : enum class SingleDuct_CV
68 : {
69 : Invalid = -1,
70 : TwoPipeInduc,
71 : FourPipeInduc,
72 : Num
73 : };
74 :
75 10 : struct IndUnitData
76 : {
77 : // Members
78 : // input data
79 : std::string Name; // name of unit
80 : std::string UnitType; // type of unit
81 : SingleDuct_CV UnitType_Num; // index to type of unit
82 : std::string Sched; // availability schedule
83 : int SchedPtr; // index to schedule
84 : Real64 MaxTotAirVolFlow; // m3/s (autosizable)
85 : Real64 MaxTotAirMassFlow; // kg/s
86 : Real64 InducRatio; // ratio of induced air flow to primary air flow
87 : int PriAirInNode; // unit primary air inlet node number
88 : int SecAirInNode; // unit induced air inlet node number
89 : int OutAirNode; // unit air outlet node number
90 : int HWControlNode; // hot water control node
91 : int CWControlNode; // cold water control node
92 : std::string HCoilType; // type of heating coil component
93 : std::string HCoil; // name of heating coil component
94 : int HCoil_Num; // index to this coil
95 : DataPlant::PlantEquipmentType HeatingCoilType;
96 : Real64 MaxVolHotWaterFlow; // m3/s (autosizable)
97 : Real64 MaxHotWaterFlow; // kg/s
98 : Real64 MinVolHotWaterFlow; // m3/s
99 : Real64 MinHotWaterFlow; // kg/s
100 : Real64 HotControlOffset; // control tolerance
101 : PlantLocation HWPlantLoc; // index for plant location for hot water coil
102 : int HWCoilFailNum1; // index for errors
103 : int HWCoilFailNum2; // index for errors
104 : std::string CCoilType; // type of cooling coil component
105 : std::string CCoil; // name of cooling coil component
106 : int CCoil_Num; // index to this coil
107 : DataPlant::PlantEquipmentType CoolingCoilType;
108 : Real64 MaxVolColdWaterFlow; // m3/s (autosizable)
109 : Real64 MaxColdWaterFlow; // kg/s
110 : Real64 MinVolColdWaterFlow; // m3/s
111 : Real64 MinColdWaterFlow; // kg/s
112 : Real64 ColdControlOffset; // control tolerance
113 : PlantLocation CWPlantLoc; // index for plant component for chilled water coil
114 : int CWCoilFailNum1; // index for errors
115 : int CWCoilFailNum2; // index for errors
116 : std::string MixerName; // name of air mixer component
117 : int Mixer_Num; // index to this mixer
118 : Real64 MaxPriAirMassFlow; // kg/s
119 : Real64 MaxSecAirMassFlow; // kg/s
120 : int ADUNum; // index of corresponding air distribution unit
121 : Real64 DesCoolingLoad; // used for reporting during coil sizing
122 : Real64 DesHeatingLoad; // used for reporting during coil sizing
123 : int CtrlZoneNum; // Pointer to CtrlZone data structure
124 : int CtrlZoneInNodeIndex; // which controlled zone inlet node number corresponds with this unit
125 : int AirLoopNum; // index to airloop that this terminal unit is connected to
126 : Real64 OutdoorAirFlowRate; // zone outdoor air volume flow rate
127 :
128 : // Default Constructor
129 2 : IndUnitData()
130 2 : : UnitType_Num(SingleDuct_CV::Invalid), SchedPtr(0), MaxTotAirVolFlow(0.0), MaxTotAirMassFlow(0.0), InducRatio(2.5), PriAirInNode(0),
131 : SecAirInNode(0), OutAirNode(0), HWControlNode(0), CWControlNode(0), HCoil_Num(0),
132 : HeatingCoilType(DataPlant::PlantEquipmentType::Invalid), MaxVolHotWaterFlow(0.0), MaxHotWaterFlow(0.0), MinVolHotWaterFlow(0.0),
133 : MinHotWaterFlow(0.0), HotControlOffset(0.0), HWPlantLoc{}, HWCoilFailNum1(0), HWCoilFailNum2(0), CCoil_Num(0),
134 : CoolingCoilType(DataPlant::PlantEquipmentType::Invalid), MaxVolColdWaterFlow(0.0), MaxColdWaterFlow(0.0), MinVolColdWaterFlow(0.0),
135 : MinColdWaterFlow(0.0), ColdControlOffset(0.0), CWPlantLoc{}, CWCoilFailNum1(0), CWCoilFailNum2(0), Mixer_Num(0), MaxPriAirMassFlow(0.0),
136 : MaxSecAirMassFlow(0.0), ADUNum(0), DesCoolingLoad(0.0), DesHeatingLoad(0.0), CtrlZoneNum(0), CtrlZoneInNodeIndex(0), AirLoopNum(0),
137 2 : OutdoorAirFlowRate(0.0)
138 : {
139 2 : }
140 : void ReportIndUnit(EnergyPlusData &state);
141 : void CalcOutdoorAirVolumeFlowRate(EnergyPlusData &state);
142 : };
143 :
144 : void SimIndUnit(EnergyPlusData &state,
145 : std::string_view CompName, // name of the terminal unit
146 : bool const FirstHVACIteration, // TRUE if first HVAC iteration in time step
147 : int const ZoneNum, // index of zone served by the terminal unit
148 : int const ZoneNodeNum, // zone node number of zone served by the terminal unit
149 : int &CompIndex // which terminal unit in data structure
150 : );
151 :
152 : void GetIndUnits(EnergyPlusData &state);
153 :
154 : void InitIndUnit(EnergyPlusData &state,
155 : int const IUNum, // number of the current induction unit being simulated
156 : bool const FirstHVACIteration // TRUE if first air loop solution this HVAC step
157 : );
158 :
159 : void SizeIndUnit(EnergyPlusData &state, int const IUNum);
160 :
161 : void SimFourPipeIndUnit(EnergyPlusData &state,
162 : int const IUNum, // number of the current unit being simulated
163 : int const ZoneNum, // number of zone being served
164 : int const ZoneNodeNum, // zone node number
165 : bool const FirstHVACIteration // TRUE if 1st HVAC simulation of system timestep
166 : );
167 :
168 : void CalcFourPipeIndUnit(EnergyPlusData &state,
169 : int const IUNum, // Unit index
170 : bool const FirstHVACIteration, // flag for 1st HVAV iteration in the time step
171 : int const ZoneNode, // zone node number
172 : Real64 const HWFlow, // hot water flow (kg/s)
173 : Real64 const CWFlow, // cold water flow (kg/s)
174 : Real64 &LoadMet // load met by unit (watts)
175 : );
176 :
177 : bool FourPipeInductionUnitHasMixer(EnergyPlusData &state, std::string_view CompName); // component (mixer) name
178 :
179 : } // namespace HVACSingleDuctInduc
180 :
181 1542 : struct HVACSingleDuctInducData : BaseGlobalStruct
182 : {
183 : int NumIndUnits = 0;
184 : int NumFourPipes = 0;
185 : Array1D_bool CheckEquipName;
186 : bool GetIUInputFlag = true; // First time, input is "gotten"
187 : bool MyOneTimeFlag = true;
188 : Array1D_bool MyEnvrnFlag;
189 : Array1D_bool MySizeFlag;
190 : Array1D_bool MyPlantScanFlag;
191 : Array1D_bool MyAirDistInitFlag;
192 : Array1D<HVACSingleDuctInduc::IndUnitData> IndUnit;
193 : bool ZoneEquipmentListChecked = false;
194 :
195 0 : void clear_state() override
196 : {
197 0 : this->NumIndUnits = 0;
198 0 : this->IndUnit.deallocate();
199 0 : this->GetIUInputFlag = true;
200 0 : this->NumFourPipes = 0;
201 0 : this->MyOneTimeFlag = true;
202 0 : this->MyEnvrnFlag.deallocate();
203 0 : this->MySizeFlag.deallocate();
204 0 : this->MyPlantScanFlag.deallocate();
205 0 : this->MyAirDistInitFlag.deallocate();
206 0 : this->CheckEquipName.deallocate();
207 0 : this->ZoneEquipmentListChecked = false;
208 0 : }
209 : };
210 :
211 : } // namespace EnergyPlus
212 :
213 : #endif
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