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47 :
48 : #include <EnergyPlus/Autosizing/HeatingWaterDesCoilLoadUsedForUASizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataEnvironment.hh>
51 : #include <EnergyPlus/FluidProperties.hh>
52 : #include <EnergyPlus/Psychrometrics.hh>
53 :
54 : namespace EnergyPlus {
55 :
56 2213 : Real64 HeatingWaterDesCoilLoadUsedForUASizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
57 : {
58 2213 : if (!this->checkInitialized(state, errorsFound)) {
59 0 : return 0.0;
60 : }
61 2213 : this->preSize(state, _originalValue);
62 :
63 2213 : Real64 FanCoolLoad = 0.0;
64 : Real64 DesMassFlow;
65 2213 : Real64 TotCapTempModFac = 1.0;
66 2213 : Real64 DXFlowPerCapMinRatio = 1.0;
67 2213 : Real64 DXFlowPerCapMaxRatio = 1.0;
68 2213 : if (this->curZoneEqNum > 0) {
69 1842 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
70 0 : this->autoSizedValue = _originalValue;
71 : } else {
72 1842 : if (this->termUnitSingDuct && (this->curTermUnitSizingNum > 0)) {
73 5100 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
74 1700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
75 : DataGlobalConstants::HWInitConvTemp,
76 1700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
77 1700 : this->callingRoutine);
78 5100 : Real64 rho = FluidProperties::GetDensityGlycol(state,
79 1700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
80 : DataGlobalConstants::HWInitConvTemp,
81 1700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
82 1700 : this->callingRoutine);
83 1700 : this->autoSizedValue = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizHeatDeltaT * Cp * rho;
84 1700 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilReheatMultiplier(state, this->compName, this->compType, 1.0);
85 142 : } else if ((this->termUnitPIU || this->termUnitIU) && (this->curTermUnitSizingNum > 0)) {
86 114 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
87 38 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
88 : DataGlobalConstants::HWInitConvTemp,
89 38 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
90 38 : this->callingRoutine);
91 114 : Real64 rho = FluidProperties::GetDensityGlycol(state,
92 38 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
93 : DataGlobalConstants::HWInitConvTemp,
94 38 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
95 38 : this->callingRoutine);
96 76 : this->autoSizedValue = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizHeatDeltaT * Cp * rho *
97 76 : this->termUnitSizing(this->curTermUnitSizingNum).ReheatLoadMult;
98 104 : } else if (this->zoneEqFanCoil || this->zoneEqUnitHeater) {
99 249 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
100 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
101 : DataGlobalConstants::HWInitConvTemp,
102 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
103 83 : this->callingRoutine);
104 249 : Real64 rho = FluidProperties::GetDensityGlycol(state,
105 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
106 : DataGlobalConstants::HWInitConvTemp,
107 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
108 83 : this->callingRoutine);
109 83 : this->autoSizedValue = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizHeatDeltaT * Cp * rho;
110 83 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilReheatMultiplier(state, this->compName, this->compType, 1.0);
111 : } else {
112 21 : if (this->zoneEqSizing(this->curZoneEqNum).SystemAirFlow) {
113 0 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).AirVolFlow * state.dataEnvrn->StdRhoAir;
114 21 : } else if (this->zoneEqSizing(this->curZoneEqNum).HeatingAirFlow) {
115 12 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).HeatingAirVolFlow * state.dataEnvrn->StdRhoAir;
116 : } else {
117 9 : DesMassFlow = this->finalZoneSizing(this->curZoneEqNum).DesHeatMassFlow;
118 : }
119 : Real64 CoilInTemp =
120 42 : this->setHeatCoilInletTempForZoneEqSizing(setOAFracForZoneEqSizing(state, DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
121 21 : this->zoneEqSizing(this->curZoneEqNum),
122 42 : this->finalZoneSizing(this->curZoneEqNum));
123 : // Real64 CoilInHumRat =
124 : // this->setHeatCoilInletHumRatForZoneEqSizing(setOAFracForZoneEqSizing(DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
125 : // this->zoneEqSizing(this->curZoneEqNum),
126 : // this->finalZoneSizing(this->curZoneEqNum));
127 21 : Real64 CoilOutTemp = this->finalZoneSizing(this->curZoneEqNum).HeatDesTemp;
128 21 : Real64 CoilOutHumRat = this->finalZoneSizing(this->curZoneEqNum).HeatDesHumRat;
129 21 : this->autoSizedValue = Psychrometrics::PsyCpAirFnW(CoilOutHumRat) * DesMassFlow * (CoilOutTemp - CoilInTemp);
130 : }
131 : }
132 371 : } else if (this->curSysNum > 0) {
133 371 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
134 0 : this->autoSizedValue = _originalValue;
135 : } else {
136 : Real64 OutAirFrac;
137 371 : if (this->curOASysNum > 0) {
138 28 : OutAirFrac = 1.0;
139 343 : } else if (this->finalSysSizing(this->curSysNum).HeatOAOption == this->minOA) {
140 330 : if (this->dataAirFlowUsedForSizing > 0.0) {
141 330 : OutAirFrac = this->finalSysSizing(this->curSysNum).DesOutAirVolFlow / this->dataAirFlowUsedForSizing;
142 : } else {
143 0 : OutAirFrac = 1.0;
144 : }
145 330 : OutAirFrac = min(1.0, max(0.0, OutAirFrac));
146 : } else {
147 13 : OutAirFrac = 1.0;
148 : }
149 : Real64 CoilInTemp;
150 371 : if (this->curOASysNum == 0 && this->primaryAirSystem(this->curSysNum).NumOAHeatCoils > 0) {
151 50 : CoilInTemp = OutAirFrac * this->finalSysSizing(this->curSysNum).PreheatTemp +
152 25 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).HeatRetTemp;
153 346 : } else if (this->curOASysNum > 0 && this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
154 1 : CoilInTemp = this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].HeatOutTemp;
155 : } else {
156 690 : CoilInTemp = OutAirFrac * this->finalSysSizing(this->curSysNum).HeatOutTemp +
157 345 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).HeatRetTemp;
158 : }
159 : // coil load
160 371 : Real64 CpAirStd = Psychrometrics::PsyCpAirFnW(0.0);
161 371 : if (this->curOASysNum > 0) {
162 28 : if (this->dataDesicRegCoil) {
163 0 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
164 0 : (this->dataDesOutletAirTemp - this->dataDesInletAirTemp);
165 28 : } else if (this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
166 2 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
167 1 : (this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].PreheatTemp - CoilInTemp);
168 : } else {
169 54 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
170 27 : (this->finalSysSizing(this->curSysNum).PreheatTemp - CoilInTemp);
171 : }
172 : } else {
173 343 : if (this->finalSysSizing(this->curSysNum).HeatingCapMethod == DataSizing::FractionOfAutosizedHeatingCapacity) {
174 1 : this->dataFracOfAutosizedHeatingCapacity = this->finalSysSizing(this->curSysNum).FractionOfAutosizedHeatingCapacity;
175 : }
176 343 : if (this->dataDesicRegCoil) {
177 0 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
178 0 : (this->dataDesOutletAirTemp - this->dataDesInletAirTemp);
179 : } else {
180 686 : this->autoSizedValue = CpAirStd * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing *
181 343 : (this->finalSysSizing(this->curSysNum).HeatSupTemp - CoilInTemp);
182 : }
183 : }
184 : }
185 : }
186 : // heating coil can't have negative capacity
187 2213 : this->autoSizedValue = std::max(0.0, this->autoSizedValue) * this->dataHeatSizeRatio * this->dataFracOfAutosizedHeatingCapacity;
188 2213 : if (this->overrideSizeString) {
189 2213 : if (this->isEpJSON) this->sizingString = "water_heating_design_coil_load_for_ua_sizing";
190 : }
191 2213 : this->selectSizerOutput(state, errorsFound);
192 2213 : if (this->isCoilReportObject && this->curSysNum <= this->numPrimaryAirSys) {
193 4424 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilHeatingCapacity(state,
194 : this->compName,
195 : this->compType,
196 : this->autoSizedValue,
197 2212 : this->wasAutoSized,
198 : this->curSysNum,
199 : this->curZoneEqNum,
200 : this->curOASysNum,
201 : FanCoolLoad,
202 : TotCapTempModFac,
203 : DXFlowPerCapMinRatio,
204 : DXFlowPerCapMaxRatio);
205 : }
206 2213 : return this->autoSizedValue;
207 : }
208 :
209 2313 : } // namespace EnergyPlus
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