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47 :
48 : #include <EnergyPlus/Autosizing/CoolingWaterflowSizing.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 :
57 886 : Real64 CoolingWaterflowSizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
58 : {
59 886 : if (!this->checkInitialized(state, errorsFound)) {
60 0 : return 0.0;
61 : }
62 886 : this->preSize(state, _originalValue);
63 886 : Real64 CoilDesWaterDeltaT = this->dataWaterCoilSizCoolDeltaT;
64 : // component used AutoCalculate method to size value
65 : // AutoCalculate is not used for cooling coil water flow sizing
66 886 : if (this->dataFractionUsedForSizing > 0.0) {
67 0 : this->autoSizedValue = this->dataConstantUsedForSizing * this->dataFractionUsedForSizing;
68 : } else {
69 886 : if (this->curZoneEqNum > 0) {
70 184 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
71 0 : this->autoSizedValue = _originalValue;
72 : } else {
73 184 : if (this->termUnitIU && (this->curTermUnitSizingNum > 0)) {
74 8 : this->autoSizedValue = this->termUnitSizing(this->curTermUnitSizingNum).MaxCWVolFlow;
75 176 : } else if (this->zoneEqFanCoil || this->zoneEqUnitVent || this->zoneEqVentedSlab) {
76 174 : this->autoSizedValue = this->zoneEqSizing(this->curZoneEqNum).MaxCWVolFlow;
77 : } else {
78 2 : Real64 CoilInTemp = this->finalZoneSizing(this->curZoneEqNum).DesCoolCoilInTemp;
79 2 : Real64 CoilOutTemp = this->finalZoneSizing(this->curZoneEqNum).CoolDesTemp;
80 2 : Real64 CoilOutHumRat = this->finalZoneSizing(this->curZoneEqNum).CoolDesHumRat;
81 2 : Real64 CoilInHumRat = this->finalZoneSizing(this->curZoneEqNum).DesCoolCoilInHumRat;
82 : Real64 DesCoilLoad =
83 2 : this->finalZoneSizing(this->curZoneEqNum).DesCoolMassFlow *
84 2 : (Psychrometrics::PsyHFnTdbW(CoilInTemp, CoilInHumRat) - Psychrometrics::PsyHFnTdbW(CoilOutTemp, CoilOutHumRat));
85 2 : Real64 DesVolFlow = this->finalZoneSizing(this->curZoneEqNum).DesCoolMassFlow / state.dataEnvrn->StdRhoAir;
86 : // add fan heat to coil load
87 2 : DesCoilLoad += BaseSizerWithFanHeatInputs::calcFanDesHeatGain(DesVolFlow);
88 2 : if (DesCoilLoad >= DataHVACGlobals::SmallLoad) {
89 4 : if (this->dataWaterLoopNum > 0 && this->dataWaterLoopNum <= (int)state.dataPlnt->PlantLoop.size() &&
90 2 : this->dataWaterCoilSizCoolDeltaT > 0.0) {
91 6 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
92 2 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
93 : DataGlobalConstants::CWInitConvTemp,
94 2 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
95 2 : this->callingRoutine);
96 6 : Real64 rho = FluidProperties::GetDensityGlycol(state,
97 2 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
98 : DataGlobalConstants::CWInitConvTemp,
99 2 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
100 2 : this->callingRoutine);
101 2 : this->autoSizedValue = DesCoilLoad / (CoilDesWaterDeltaT * Cp * rho);
102 : } else {
103 0 : this->autoSizedValue = 0.0;
104 : std::string msg =
105 0 : "Developer Error: For autosizing of " + this->compType + ' ' + this->compName +
106 0 : ", certain inputs are required. Add PlantLoop, Plant loop number, coil capacity and/or Water Coil water delta T.";
107 0 : this->errorType = AutoSizingResultType::ErrorType1;
108 0 : this->addErrorMessage(msg);
109 0 : ShowSevereError(state, msg);
110 : }
111 : } else {
112 0 : this->autoSizedValue = 0.0;
113 : }
114 : }
115 : }
116 702 : } else if (this->curSysNum > 0) {
117 702 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
118 0 : this->autoSizedValue = _originalValue;
119 : } else {
120 702 : if (this->curOASysNum > 0) CoilDesWaterDeltaT *= 0.5;
121 702 : if (this->dataCapacityUsedForSizing >= DataHVACGlobals::SmallLoad) {
122 700 : if (this->dataWaterLoopNum > 0 && this->dataWaterLoopNum <= (int)state.dataPlnt->PlantLoop.size() && CoilDesWaterDeltaT > 0.0) {
123 2100 : Real64 Cp = FluidProperties::GetSpecificHeatGlycol(state,
124 700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
125 : DataGlobalConstants::CWInitConvTemp,
126 700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
127 700 : this->callingRoutine);
128 2100 : Real64 rho = FluidProperties::GetDensityGlycol(state,
129 700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidName,
130 : DataGlobalConstants::CWInitConvTemp,
131 700 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).FluidIndex,
132 700 : this->callingRoutine);
133 700 : this->autoSizedValue = this->dataCapacityUsedForSizing / (CoilDesWaterDeltaT * Cp * rho);
134 : } else {
135 0 : this->autoSizedValue = 0.0;
136 : std::string msg =
137 0 : "Developer Error: For autosizing of " + this->compType + ' ' + this->compName +
138 0 : ", certain inputs are required. Add PlantLoop, Plant loop number, coil capacity and/or Water Coil water delta T.";
139 0 : this->errorType = AutoSizingResultType::ErrorType1;
140 0 : this->addErrorMessage(msg);
141 0 : ShowSevereError(state, msg);
142 : }
143 : } else {
144 2 : this->autoSizedValue = 0.0;
145 : // Warning about zero design coil load is issued elsewhere.
146 : }
147 : }
148 : }
149 : }
150 : // override sizing string for detailed coil model
151 886 : if (this->overrideSizeString) {
152 886 : if (this->coilType_Num == DataHVACGlobals::Coil_CoolingWaterDetailed) {
153 124 : if (this->isEpJSON) {
154 0 : this->sizingString = "maximum_water_flow_rate [m3/s]";
155 : } else {
156 124 : this->sizingString = "Maximum Water Flow Rate [m3/s]";
157 : }
158 : } else {
159 762 : if (this->isEpJSON) this->sizingString = "design_water_flow_rate [m3/s]";
160 : }
161 : }
162 886 : this->selectSizerOutput(state, errorsFound);
163 886 : if (this->isCoilReportObject) {
164 1772 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilWaterFlowPltSizNum(
165 886 : state, this->compName, this->compType, this->autoSizedValue, this->wasAutoSized, this->dataPltSizCoolNum, this->dataWaterLoopNum);
166 886 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilWaterDeltaT(state, this->compName, this->compType, CoilDesWaterDeltaT);
167 886 : if (this->dataDesInletWaterTemp > 0.0) {
168 443 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilEntWaterTemp(
169 : state, this->compName, this->compType, this->dataDesInletWaterTemp);
170 886 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilLvgWaterTemp(
171 443 : state, this->compName, this->compType, this->dataDesInletWaterTemp + CoilDesWaterDeltaT);
172 : } else {
173 443 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilEntWaterTemp(
174 : state, this->compName, this->compType, DataGlobalConstants::CWInitConvTemp);
175 443 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilLvgWaterTemp(
176 : state, this->compName, this->compType, DataGlobalConstants::CWInitConvTemp + CoilDesWaterDeltaT);
177 : }
178 : }
179 886 : return this->autoSizedValue;
180 : }
181 :
182 0 : void CoolingWaterflowSizer::clearState()
183 : {
184 0 : BaseSizerWithFanHeatInputs::clearState();
185 0 : }
186 :
187 2313 : } // namespace EnergyPlus
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