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47 :
48 : // C++ Headers
49 : #include <cmath>
50 :
51 : // EnergyPlus Headers
52 : #include <EnergyPlus/Autosizing/HeatingWaterDesCoilLoadUsedForUASizing.hh>
53 : #include <EnergyPlus/Data/EnergyPlusData.hh>
54 : #include <EnergyPlus/DataEnvironment.hh>
55 : #include <EnergyPlus/FluidProperties.hh>
56 : #include <EnergyPlus/Psychrometrics.hh>
57 :
58 : namespace EnergyPlus {
59 :
60 55 : Real64 HeatingWaterDesCoilLoadUsedForUASizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
61 : {
62 55 : if (!this->checkInitialized(state, errorsFound)) {
63 1 : return 0.0;
64 : }
65 54 : this->preSize(state, _originalValue);
66 :
67 54 : if (this->curZoneEqNum > 0) {
68 29 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
69 2 : this->autoSizedValue = _originalValue;
70 : } else {
71 27 : if (this->termUnitSingDuct && (this->curTermUnitSizingNum > 0)) {
72 : Real64 const Cp =
73 7 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getSpecificHeat(state, Constant::HWInitConvTemp, this->callingRoutine);
74 : Real64 const rho =
75 7 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getDensity(state, Constant::HWInitConvTemp, this->callingRoutine);
76 7 : this->autoSizedValue = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizHeatDeltaT * Cp * rho;
77 7 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilReheatMultiplier(state, this->compName, this->compType, 1.0);
78 27 : } else if ((this->termUnitPIU || this->termUnitIU) && (this->curTermUnitSizingNum > 0)) {
79 : Real64 const Cp =
80 1 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getSpecificHeat(state, Constant::HWInitConvTemp, this->callingRoutine);
81 : Real64 const rho =
82 1 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getDensity(state, Constant::HWInitConvTemp, this->callingRoutine);
83 2 : this->autoSizedValue = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizHeatDeltaT * Cp * rho *
84 1 : this->termUnitSizing(this->curTermUnitSizingNum).ReheatLoadMult;
85 20 : } else if (this->zoneEqFanCoil || this->zoneEqUnitHeater) {
86 : Real64 const Cp =
87 10 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getSpecificHeat(state, Constant::HWInitConvTemp, this->callingRoutine);
88 : Real64 const rho =
89 10 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getDensity(state, Constant::HWInitConvTemp, this->callingRoutine);
90 10 : this->autoSizedValue = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizHeatDeltaT * Cp * rho;
91 10 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilReheatMultiplier(state, this->compName, this->compType, 1.0);
92 10 : } else {
93 9 : Real64 DesMassFlow = 0.0;
94 9 : if (this->zoneEqSizing(this->curZoneEqNum).SystemAirFlow) {
95 1 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).AirVolFlow * state.dataEnvrn->StdRhoAir;
96 8 : } else if (this->zoneEqSizing(this->curZoneEqNum).HeatingAirFlow) {
97 4 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).HeatingAirVolFlow * state.dataEnvrn->StdRhoAir;
98 : } else {
99 4 : DesMassFlow = this->finalZoneSizing(this->curZoneEqNum).DesHeatMassFlow;
100 : }
101 : Real64 const CoilInTemp =
102 9 : this->setHeatCoilInletTempForZoneEqSizing(setOAFracForZoneEqSizing(state, DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
103 9 : this->zoneEqSizing(this->curZoneEqNum),
104 9 : this->finalZoneSizing(this->curZoneEqNum));
105 : // Real64 CoilInHumRat =
106 : // this->setHeatCoilInletHumRatForZoneEqSizing(setOAFracForZoneEqSizing(DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
107 : // this->zoneEqSizing(this->curZoneEqNum),
108 : // this->finalZoneSizing(this->curZoneEqNum));
109 9 : Real64 const CoilOutTemp = this->finalZoneSizing(this->curZoneEqNum).HeatDesTemp;
110 9 : Real64 const CoilOutHumRat = this->finalZoneSizing(this->curZoneEqNum).HeatDesHumRat;
111 9 : this->autoSizedValue = Psychrometrics::PsyCpAirFnW(CoilOutHumRat) * DesMassFlow * (CoilOutTemp - CoilInTemp);
112 : }
113 : }
114 25 : } else if (this->curSysNum > 0) {
115 25 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
116 1 : this->autoSizedValue = _originalValue;
117 : } else {
118 24 : Real64 OutAirFrac = 1.0;
119 24 : if (this->curOASysNum > 0) {
120 5 : OutAirFrac = 1.0;
121 19 : } else if (this->finalSysSizing(this->curSysNum).HeatOAOption == this->minOA) {
122 6 : if (this->dataAirFlowUsedForSizing > 0.0) {
123 6 : OutAirFrac = this->finalSysSizing(this->curSysNum).DesOutAirVolFlow / this->dataAirFlowUsedForSizing;
124 6 : OutAirFrac = min(1.0, max(0.0, OutAirFrac));
125 : } else {
126 0 : OutAirFrac = 1.0;
127 : }
128 : } else {
129 13 : OutAirFrac = 1.0;
130 : }
131 24 : Real64 CoilInTemp = 0.0;
132 24 : if (this->curOASysNum == 0 && this->primaryAirSystem(this->curSysNum).NumOAHeatCoils > 0) {
133 1 : CoilInTemp = OutAirFrac * this->finalSysSizing(this->curSysNum).PreheatTemp +
134 1 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).HeatRetTemp;
135 23 : } else if (this->curOASysNum > 0 && this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
136 2 : CoilInTemp = this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].HeatOutTemp;
137 : } else {
138 21 : CoilInTemp = OutAirFrac * this->finalSysSizing(this->curSysNum).HeatOutTemp +
139 21 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).HeatRetTemp;
140 : }
141 : // coil load
142 24 : Real64 const CpAirStd = Psychrometrics::PsyCpAirFnW(0.0);
143 24 : if (this->curOASysNum > 0) {
144 5 : if (this->dataDesicRegCoil) {
145 0 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
146 0 : (this->dataDesOutletAirTemp - this->dataDesInletAirTemp);
147 5 : } else if (this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
148 2 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
149 2 : (this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].PreheatTemp - CoilInTemp);
150 : } else {
151 3 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
152 3 : (this->finalSysSizing(this->curSysNum).PreheatTemp - CoilInTemp);
153 : }
154 : } else {
155 19 : if (this->finalSysSizing(this->curSysNum).HeatingCapMethod == DataSizing::FractionOfAutosizedHeatingCapacity) {
156 4 : this->dataFracOfAutosizedHeatingCapacity = this->finalSysSizing(this->curSysNum).FractionOfAutosizedHeatingCapacity;
157 : }
158 19 : if (this->dataDesicRegCoil) {
159 2 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
160 2 : (this->dataDesOutletAirTemp - this->dataDesInletAirTemp);
161 : } else {
162 17 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
163 17 : (this->finalSysSizing(this->curSysNum).HeatSupTemp - CoilInTemp);
164 : }
165 : }
166 : }
167 : }
168 : // heating coil can't have negative capacity
169 54 : this->autoSizedValue = std::max(0.0, this->autoSizedValue) * this->dataHeatSizeRatio * this->dataFracOfAutosizedHeatingCapacity;
170 54 : if (this->overrideSizeString) {
171 54 : if (this->isEpJSON) {
172 0 : this->sizingString = "water_heating_design_coil_load_for_ua_sizing";
173 : }
174 : }
175 54 : this->selectSizerOutput(state, errorsFound);
176 54 : if (this->isCoilReportObject && this->curSysNum <= this->numPrimaryAirSys) {
177 47 : Real64 constexpr FanCoolLoad = 0.0;
178 47 : Real64 constexpr TotCapTempModFac = 1.0;
179 47 : Real64 constexpr DXFlowPerCapMinRatio = 1.0;
180 47 : Real64 constexpr DXFlowPerCapMaxRatio = 1.0;
181 47 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilHeatingCapacity(state,
182 47 : this->compName,
183 47 : this->compType,
184 : this->autoSizedValue,
185 47 : this->wasAutoSized,
186 : this->curSysNum,
187 : this->curZoneEqNum,
188 : this->curOASysNum,
189 : FanCoolLoad,
190 : TotCapTempModFac,
191 : DXFlowPerCapMinRatio,
192 : DXFlowPerCapMaxRatio);
193 : }
194 54 : return this->autoSizedValue;
195 : }
196 :
197 : } // namespace EnergyPlus
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