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1 : // EnergyPlus, Copyright (c) 1996-2025, The Board of Trustees of the University of Illinois,
2 : // The Regents of the University of California, through Lawrence Berkeley National Laboratory
3 : // (subject to receipt of any required approvals from the U.S. Dept. of Energy), Oak Ridge
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31 : // software as "EnergyPlus version X" software, where "X" is the version number Licensee
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47 :
48 : #ifndef CoolTower_hh_INCLUDED
49 : #define CoolTower_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/ScheduleManager.hh>
59 :
60 : namespace EnergyPlus {
61 :
62 : // Forward declarations
63 : struct EnergyPlusData;
64 :
65 : namespace CoolTower {
66 :
67 : enum class FlowCtrl
68 : {
69 : Invalid = -1,
70 : FlowSchedule,
71 : WindDriven,
72 : Num
73 : };
74 :
75 : enum class WaterSupplyMode
76 : {
77 : Invalid = -1,
78 : FromMains,
79 : FromTank,
80 : Num
81 : };
82 :
83 : struct CoolTowerParams
84 : {
85 : // Members
86 : std::string Name; // The component name
87 : std::string CompType; // Type of component
88 : Sched::Schedule *availSched = nullptr; // schedule
89 : int ZonePtr = 0; // Index to zone
90 : int spacePtr = 0; // Index to space (if applicable)
91 : Sched::Schedule *pumpSched = nullptr; // Index to schedule for water pump
92 : FlowCtrl FlowCtrlType = FlowCtrl::Invalid; // Type of cooltower operation
93 : WaterSupplyMode CoolTWaterSupplyMode = WaterSupplyMode::FromMains; // Type of water source
94 : std::string CoolTWaterSupplyName; // Name of water source
95 : int CoolTWaterSupTankID; // Index to water storage tank
96 : int CoolTWaterTankDemandARRID; // Index to water storage demand
97 : Real64 TowerHeight = 0.0; // Effective cooltower height in m
98 : Real64 OutletArea = 0.0; // Outlet area where conditioned air comes in m2
99 : Real64 OutletVelocity = 0.0; // Outlet velocity of the cooltower in m/s
100 : Real64 MaxAirVolFlowRate = 0.0; // Maximum allowable airflow in m3/s
101 : Real64 AirMassFlowRate = 0.0; // Air mass flow rate in kg/s
102 : Real64 CoolTAirMass = 0.0; // Air mass in kg
103 : Real64 MinZoneTemp = 0.0; // Lower temperature limit to prevent over cooling in C
104 : Real64 FracWaterLoss = 0.0; // Fraction of estimated blowdown and drift water
105 : Real64 FracFlowSched = 0.0; // Fraction of airflow loss
106 : Real64 MaxWaterFlowRate = 0.0; // Maximum limit of water flow rate in m3/s
107 : Real64 ActualWaterFlowRate = 0.0; // Actual water mass flow rate in m3/s
108 : Real64 RatedPumpPower = 0.0; // Rated power consumption for water pump serving the cooltower in watts
109 : Real64 SenHeatLoss = 0.0; // Sensible heat loss in Joules
110 : Real64 SenHeatPower = 0.0; // Sensible heat loss rate in watts
111 : Real64 LatHeatLoss = 0.0; // Latent heat loss in Joules
112 : Real64 LatHeatPower = 0.0; // Latent heat loss rate in watts
113 : Real64 AirVolFlowRate = 0.0; // Air flow rate in m3/s
114 : Real64 AirVolFlowRateStd = 0.0; // Air flow rate in m3/s at standard conditions
115 : Real64 CoolTAirVol = 0.0; // Air volume in m3
116 : Real64 ActualAirVolFlowRate = 0.0; // Actual air flow rate in m3/s
117 : Real64 InletDBTemp = 0.0; // Outdoor dry bulb temperature in C
118 : Real64 InletWBTemp = 0.0; // Outdoor wet bulb temperature in C
119 : Real64 InletHumRat = 0.0; // Outdoor humidity ratio
120 : Real64 OutletTemp = 0.0; // Dry bulb temperature at cooltower exit in C
121 : Real64 OutletHumRat = 0.0; // Humidity ratio at cooltower exit
122 : Real64 CoolTWaterConsumpRate = 0.0; // Total water consumption during the processes in m3/s
123 : Real64 CoolTWaterStarvMakeupRate = 0.0; // Water provided from the mains (m3/s)
124 : Real64 CoolTWaterStarvMakeup = 0.0; // Water provided from the mains
125 : Real64 CoolTWaterConsump = 0.0; // Total water consumption in m3
126 : Real64 PumpElecPower = 0.0; // Pump power in watts
127 : Real64 PumpElecConsump = 0.0; // Pump energy consumption in Joules
128 : };
129 :
130 : void ManageCoolTower(EnergyPlusData &state);
131 :
132 : void GetCoolTower(EnergyPlusData &state);
133 :
134 : void CalcCoolTower(EnergyPlusData &state);
135 :
136 : void UpdateCoolTower(EnergyPlusData &state);
137 :
138 : void ReportCoolTower(EnergyPlusData &state);
139 :
140 : } // namespace CoolTower
141 :
142 : struct CoolTowerData : BaseGlobalStruct
143 : {
144 :
145 : bool GetInputFlag = true;
146 : Array1D<CoolTower::CoolTowerParams> CoolTowerSys;
147 :
148 2126 : void init_constant_state([[maybe_unused]] EnergyPlusData &state) override
149 : {
150 2126 : }
151 :
152 1152 : void init_state([[maybe_unused]] EnergyPlusData &state) override
153 : {
154 1152 : }
155 :
156 2100 : void clear_state() override
157 : {
158 2100 : new (this) CoolTowerData();
159 2100 : }
160 : };
161 :
162 : } // namespace EnergyPlus
163 :
164 : #endif
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