Line data Source code
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47 :
48 : #include <EnergyPlus/Autosizing/WaterHeatingCapacitySizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataEnvironment.hh>
51 : #include <EnergyPlus/FluidProperties.hh>
52 : #include <EnergyPlus/General.hh>
53 : #include <EnergyPlus/Psychrometrics.hh>
54 :
55 : namespace EnergyPlus {
56 :
57 1877 : Real64 WaterHeatingCapacitySizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
58 : {
59 1877 : if (!this->checkInitialized(state, errorsFound)) {
60 0 : return 0.0;
61 : }
62 1877 : this->preSize(state, _originalValue);
63 :
64 1877 : if (this->curZoneEqNum > 0) {
65 1877 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
66 0 : this->autoSizedValue = _originalValue;
67 : } else {
68 1877 : Real64 DesMassFlow = 0.0;
69 1877 : Real64 NominalCapacityDes = 0.0;
70 1877 : Real64 CoilInTemp = 0.0;
71 1877 : Real64 CoilOutTemp = 0.0;
72 1877 : Real64 CoilOutHumRat = 0.0;
73 1877 : if ((this->termUnitSingDuct || this->termUnitPIU || this->termUnitIU) && (this->curTermUnitSizingNum > 0)) {
74 1773 : DesMassFlow = this->termUnitSizing(this->curTermUnitSizingNum).MaxHWVolFlow;
75 5319 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
76 1773 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
77 : DataGlobalConstants::HWInitConvTemp,
78 1773 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
79 1773 : this->callingRoutine);
80 5319 : Real64 rho = FluidProperties::GetDensityGlycol(state,
81 1773 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
82 : DataGlobalConstants::HWInitConvTemp,
83 1773 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
84 1773 : this->callingRoutine);
85 1773 : NominalCapacityDes = DesMassFlow * this->dataWaterCoilSizHeatDeltaT * Cp * rho;
86 104 : } else if (this->zoneEqFanCoil || this->zoneEqUnitHeater) {
87 83 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).MaxHWVolFlow;
88 249 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
89 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
90 : DataGlobalConstants::HWInitConvTemp,
91 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
92 83 : this->callingRoutine);
93 249 : Real64 rho = FluidProperties::GetDensityGlycol(state,
94 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
95 : DataGlobalConstants::HWInitConvTemp,
96 83 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
97 83 : this->callingRoutine);
98 83 : NominalCapacityDes = DesMassFlow * this->dataWaterCoilSizHeatDeltaT * Cp * rho;
99 : // if coil is part of a zonal unit, calc coil load to get hot water flow rate
100 : } else {
101 21 : if (this->zoneEqSizing(this->curZoneEqNum).SystemAirFlow) {
102 0 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).AirVolFlow * state.dataEnvrn->StdRhoAir;
103 21 : } else if (this->zoneEqSizing(this->curZoneEqNum).HeatingAirFlow) {
104 12 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).HeatingAirVolFlow * state.dataEnvrn->StdRhoAir;
105 : } else {
106 9 : DesMassFlow = this->finalZoneSizing(this->curZoneEqNum).DesHeatMassFlow;
107 : }
108 63 : CoilInTemp = this->setHeatCoilInletTempForZoneEqSizing(
109 21 : this->setOAFracForZoneEqSizing(state, DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
110 21 : this->zoneEqSizing(this->curZoneEqNum),
111 21 : this->finalZoneSizing(this->curZoneEqNum));
112 : // Real64 CoilInHumRat =
113 : // this->setHeatCoilInletHumRatForZoneEqSizing(this->setOAFracForZoneEqSizing(DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
114 : // this->zoneEqSizing(this->curZoneEqNum),
115 : // this->finalZoneSizing(this->curZoneEqNum));
116 21 : CoilOutTemp = this->finalZoneSizing(this->curZoneEqNum).HeatDesTemp;
117 21 : CoilOutHumRat = this->finalZoneSizing(this->curZoneEqNum).HeatDesHumRat;
118 21 : NominalCapacityDes = Psychrometrics::PsyCpAirFnW(CoilOutHumRat) * DesMassFlow * (CoilOutTemp - CoilInTemp);
119 : }
120 1877 : this->autoSizedValue = NominalCapacityDes * this->dataHeatSizeRatio;
121 1877 : if (state.dataGlobal->DisplayExtraWarnings && this->autoSizedValue <= 0.0) {
122 0 : std::string msg = this->callingRoutine + ": Potential issue with equipment sizing for " + this->compType + ' ' + this->compName;
123 0 : this->addErrorMessage(msg);
124 0 : ShowWarningMessage(state, msg);
125 0 : msg = format("...Rated Total Heating Capacity = {:.2T} [W]", this->autoSizedValue);
126 0 : this->addErrorMessage(msg);
127 0 : ShowContinueError(state, msg);
128 0 : msg = format("...Air flow rate used for sizing = {:.5T} [m3/s]", DesMassFlow / state.dataEnvrn->StdRhoAir);
129 0 : this->addErrorMessage(msg);
130 0 : ShowContinueError(state, msg);
131 0 : if (this->termUnitSingDuct || this->termUnitPIU || this->termUnitIU || this->zoneEqFanCoil || this->zoneEqUnitHeater) {
132 0 : msg = format("...Air flow rate used for sizing = {:.5T} [m3/s]", DesMassFlow / state.dataEnvrn->StdRhoAir);
133 0 : this->addErrorMessage(msg);
134 0 : ShowContinueError(state, msg);
135 0 : msg = format("...Plant loop temperature difference = {:.2T} [C]", this->dataWaterCoilSizHeatDeltaT);
136 0 : this->addErrorMessage(msg);
137 0 : ShowContinueError(state, msg);
138 : } else {
139 0 : msg = format("...Coil inlet air temperature used for sizing = {:.2T} [C]", CoilInTemp);
140 0 : this->addErrorMessage(msg);
141 0 : ShowContinueError(state, msg);
142 0 : msg = format("...Coil outlet air temperature used for sizing = {:.2T} [C]", CoilOutTemp);
143 0 : this->addErrorMessage(msg);
144 0 : ShowContinueError(state, msg);
145 0 : msg = format("...Coil outlet air humidity ratio used for sizing = {:.2T} [kgWater/kgDryAir]", CoilOutHumRat);
146 0 : this->addErrorMessage(msg);
147 0 : ShowContinueError(state, msg);
148 : }
149 : }
150 : }
151 0 : } else if (this->curSysNum > 0) {
152 0 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
153 0 : this->autoSizedValue = _originalValue;
154 : } else {
155 : // not implemented for air loop equipment
156 : }
157 : }
158 1877 : if (this->overrideSizeString) {
159 1877 : if (this->isEpJSON) this->sizingString = "rated_capacity";
160 : }
161 1877 : this->selectSizerOutput(state, errorsFound);
162 1877 : if (this->isCoilReportObject)
163 3754 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilWaterHeaterCapacityPltSizNum(
164 1877 : state, this->compName, this->compType, this->autoSizedValue, this->wasAutoSized, this->dataPltSizHeatNum, this->dataWaterLoopNum);
165 1877 : return this->autoSizedValue;
166 : }
167 :
168 2313 : } // namespace EnergyPlus
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