Line data Source code
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47 :
48 : #include <EnergyPlus/Autosizing/HeatingWaterflowSizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataEnvironment.hh>
51 : #include <EnergyPlus/DataHVACGlobals.hh>
52 : #include <EnergyPlus/FluidProperties.hh>
53 : #include <EnergyPlus/Psychrometrics.hh>
54 :
55 : namespace EnergyPlus {
56 :
57 2248 : Real64 HeatingWaterflowSizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
58 : {
59 2248 : if (!this->checkInitialized(state, errorsFound)) {
60 0 : return 0.0;
61 : }
62 2248 : this->preSize(state, _originalValue);
63 : // component used AutoCalculate method to size value
64 2248 : if (this->dataFractionUsedForSizing > 0.0) {
65 35 : this->autoSizedValue = this->dataConstantUsedForSizing * this->dataFractionUsedForSizing;
66 : } else {
67 2213 : if (this->curZoneEqNum > 0) {
68 1842 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
69 0 : this->autoSizedValue = _originalValue;
70 : } else {
71 1842 : if ((this->termUnitSingDuct || this->termUnitPIU || this->termUnitIU) && (this->curTermUnitSizingNum > 0)) {
72 1738 : this->autoSizedValue = this->termUnitSizing(this->curTermUnitSizingNum).MaxHWVolFlow;
73 104 : } else if (this->zoneEqFanCoil) {
74 80 : this->autoSizedValue = this->zoneEqSizing(this->curZoneEqNum).MaxHWVolFlow;
75 24 : } else if (this->zoneEqUnitHeater || this->zoneEqVentedSlab) {
76 : // for unit ventilator the cp value is calculated at 5.05(InitConvTemp) for the
77 : // child and 60.0C for the unit ventilator //|| ZoneEqUnitVent
78 3 : this->autoSizedValue = this->zoneEqSizing(this->curZoneEqNum).MaxHWVolFlow;
79 : } else {
80 21 : Real64 DesMassFlow = this->finalZoneSizing(this->curZoneEqNum).DesHeatMassFlow;
81 21 : if (this->zoneEqSizing(this->curZoneEqNum).SystemAirFlow) {
82 0 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).AirVolFlow * state.dataEnvrn->StdRhoAir;
83 21 : } else if (this->zoneEqSizing(this->curZoneEqNum).HeatingAirFlow) {
84 12 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).HeatingAirVolFlow * state.dataEnvrn->StdRhoAir;
85 : }
86 63 : Real64 CoilInTemp = this->setHeatCoilInletTempForZoneEqSizing(
87 21 : this->setOAFracForZoneEqSizing(state, DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
88 21 : this->zoneEqSizing(this->curZoneEqNum),
89 42 : this->finalZoneSizing(this->curZoneEqNum));
90 21 : Real64 CoilOutTemp = this->finalZoneSizing(this->curZoneEqNum).HeatDesTemp;
91 21 : Real64 CoilOutHumRat = this->finalZoneSizing(this->curZoneEqNum).HeatDesHumRat;
92 21 : Real64 DesCoilLoad = Psychrometrics::PsyCpAirFnW(CoilOutHumRat) * DesMassFlow * (CoilOutTemp - CoilInTemp);
93 21 : if (DesCoilLoad >= DataHVACGlobals::SmallLoad) {
94 42 : if (this->dataWaterLoopNum > 0 && this->dataWaterLoopNum <= (int)state.dataPlnt->PlantLoop.size() &&
95 21 : this->dataWaterCoilSizHeatDeltaT > 0.0) {
96 63 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
97 21 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
98 : DataGlobalConstants::HWInitConvTemp,
99 21 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
100 21 : this->callingRoutine);
101 63 : Real64 rho = FluidProperties::GetDensityGlycol(state,
102 21 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
103 : DataGlobalConstants::HWInitConvTemp,
104 21 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
105 21 : this->callingRoutine);
106 21 : this->autoSizedValue = DesCoilLoad / (this->dataWaterCoilSizHeatDeltaT * Cp * rho);
107 : } else {
108 0 : std::string msg = "Developer Error: For autosizing of " + this->compType + ' ' + this->compName +
109 0 : ", certain inputs are required. Add PlantLoop, Plant loop number and/or Water Coil water delta T.";
110 0 : this->errorType = AutoSizingResultType::ErrorType1;
111 0 : this->addErrorMessage(msg);
112 0 : ShowSevereError(state, msg);
113 : }
114 : } else {
115 0 : this->autoSizedValue = 0.0;
116 : }
117 : }
118 : }
119 371 : } else if (this->curSysNum > 0) {
120 371 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
121 0 : this->autoSizedValue = _originalValue;
122 : } else {
123 371 : if (this->dataCapacityUsedForSizing >= DataHVACGlobals::SmallLoad) {
124 680 : if (this->dataWaterLoopNum > 0 && this->dataWaterLoopNum <= (int)state.dataPlnt->PlantLoop.size() &&
125 340 : this->dataWaterCoilSizHeatDeltaT > 0.0) {
126 1020 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
127 340 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
128 : DataGlobalConstants::HWInitConvTemp,
129 340 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
130 340 : this->callingRoutine);
131 1020 : Real64 rho = FluidProperties::GetDensityGlycol(state,
132 340 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
133 : DataGlobalConstants::HWInitConvTemp,
134 340 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
135 340 : this->callingRoutine);
136 340 : this->autoSizedValue = this->dataCapacityUsedForSizing / (this->dataWaterCoilSizHeatDeltaT * Cp * rho);
137 : } else {
138 0 : this->autoSizedValue = 0.0;
139 : std::string msg =
140 0 : "Developer Error: For autosizing of " + this->compType + ' ' + this->compName +
141 0 : ", certain inputs are required. Add PlantLoop, Plant loop number, coil capacity and/or Water Coil water delta T.";
142 0 : this->errorType = AutoSizingResultType::ErrorType1;
143 0 : this->addErrorMessage(msg);
144 0 : ShowSevereError(state, msg);
145 : }
146 : } else {
147 31 : this->autoSizedValue = 0.0;
148 : // Warning about zero design coil load is issued elsewhere.
149 : }
150 : }
151 : }
152 : }
153 2248 : if (this->overrideSizeString) {
154 2248 : if (this->isEpJSON) this->sizingString = "maximum_water_flow_rate [m3/s]";
155 : }
156 2248 : this->selectSizerOutput(state, errorsFound);
157 2248 : if (this->isCoilReportObject) {
158 4496 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilWaterFlowPltSizNum(
159 2248 : state, this->compName, this->compType, this->autoSizedValue, this->wasAutoSized, this->dataPltSizHeatNum, this->dataWaterLoopNum);
160 2248 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilEntWaterTemp(
161 : state, this->compName, this->compType, DataGlobalConstants::HWInitConvTemp);
162 2248 : if (this->plantSizData.size() > 0 && this->dataPltSizHeatNum > 0) {
163 4496 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilWaterDeltaT(
164 2248 : state, this->compName, this->compType, this->plantSizData(this->dataPltSizHeatNum).DeltaT);
165 4496 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilLvgWaterTemp(
166 2248 : state, this->compName, this->compType, DataGlobalConstants::HWInitConvTemp - this->plantSizData(this->dataPltSizHeatNum).DeltaT);
167 : }
168 : }
169 2248 : return this->autoSizedValue;
170 : }
171 :
172 2313 : } // namespace EnergyPlus
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