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47 :
48 : #include <EnergyPlus/Autosizing/CoolingWaterDesAirOutletTempSizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataEnvironment.hh>
51 : #include <EnergyPlus/DataSizing.hh>
52 : #include <EnergyPlus/FluidProperties.hh>
53 : #include <EnergyPlus/General.hh>
54 : #include <EnergyPlus/Psychrometrics.hh>
55 :
56 : namespace EnergyPlus {
57 :
58 42 : Real64 CoolingWaterDesAirOutletTempSizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
59 : {
60 42 : if (!this->checkInitialized(state, errorsFound)) {
61 1 : return 0.0;
62 : }
63 41 : this->preSize(state, _originalValue);
64 41 : if (this->curZoneEqNum > 0) {
65 19 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
66 3 : this->autoSizedValue = _originalValue;
67 : } else {
68 16 : if (this->termUnitIU) {
69 : Real64 Cp =
70 2 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getSpecificHeat(state, Constant::CWInitConvTemp, this->callingRoutine);
71 : Real64 rho =
72 2 : state.dataPlnt->PlantLoop(this->dataWaterLoopNum).glycol->getDensity(state, Constant::CWInitConvTemp, this->callingRoutine);
73 2 : Real64 DesCoilLoad = this->dataWaterFlowUsedForSizing * this->dataWaterCoilSizCoolDeltaT * Cp * rho;
74 : Real64 T1Out =
75 2 : this->dataDesInletAirTemp - DesCoilLoad / (state.dataEnvrn->StdRhoAir * Psychrometrics::PsyCpAirFnW(this->dataDesInletAirHumRat) *
76 2 : this->dataAirFlowUsedForSizing);
77 2 : Real64 T2Out = this->plantSizData(this->dataPltSizCoolNum).ExitTemp + 2.0;
78 2 : this->autoSizedValue = max(T1Out, T2Out);
79 : } else {
80 14 : this->autoSizedValue = this->finalZoneSizing(this->curZoneEqNum).CoolDesTemp;
81 : }
82 16 : Real64 fanDeltaT = 0.0;
83 16 : if (this->dataFanPlacement == HVAC::FanPlace::DrawThru) {
84 : // calculate fan heat to get fan air-side delta T
85 5 : Real64 FanCoolLoad = this->calcFanDesHeatGain(this->dataAirFlowUsedForSizing);
86 5 : if (this->dataDesInletAirHumRat > 0.0 && this->dataAirFlowUsedForSizing > 0.0) {
87 5 : Real64 CpAir = Psychrometrics::PsyCpAirFnW(this->dataDesInletAirHumRat);
88 5 : fanDeltaT = FanCoolLoad / (CpAir * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing);
89 5 : this->setDataDesAccountForFanHeat(state, false); // used in CoolingCapacitySizing calculations to avoid double counting fan heat
90 : }
91 : }
92 16 : this->autoSizedValue -= fanDeltaT;
93 :
94 16 : if (this->autoSizedValue < this->dataDesInletWaterTemp && this->dataWaterFlowUsedForSizing > 0.0) { // flow here is water vol flow rate
95 2 : std::string msg = this->callingRoutine + ":" + " Coil=\"" + this->compName +
96 1 : "\", Cooling Coil has leaving air temperature < entering water temperature.";
97 1 : this->addErrorMessage(msg);
98 1 : ShowWarningError(state, msg);
99 1 : msg = format(" Tair,out = {:.3R}", this->autoSizedValue);
100 1 : this->addErrorMessage(msg);
101 1 : ShowContinueError(state, msg);
102 1 : msg = format(" Twater,in = {:.3R}", this->dataDesInletWaterTemp);
103 1 : this->addErrorMessage(msg);
104 1 : ShowContinueError(state, msg);
105 1 : this->autoSizedValue = this->dataDesInletWaterTemp + 0.5;
106 1 : msg = "....coil leaving air temperature will be reset to:";
107 1 : this->addErrorMessage(msg);
108 1 : ShowContinueError(state, msg);
109 1 : msg = format(" Tair,out = {:.3R}", this->autoSizedValue);
110 1 : this->addErrorMessage(msg);
111 1 : ShowContinueError(state, msg);
112 1 : }
113 : }
114 22 : } else if (this->curSysNum > 0) {
115 22 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
116 1 : this->autoSizedValue = _originalValue;
117 : } else {
118 21 : if (this->curOASysNum > 0) {
119 4 : if (this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
120 3 : this->autoSizedValue = this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].PrecoolTemp;
121 : } else {
122 1 : this->autoSizedValue = this->finalSysSizing(this->curSysNum).PrecoolTemp;
123 : }
124 17 : } else if (this->dataDesOutletAirTemp > 0.0) {
125 14 : this->autoSizedValue = this->dataDesOutletAirTemp;
126 14 : Real64 fanDeltaT = 0.0;
127 14 : if (this->primaryAirSystem(this->curSysNum).supFanPlace == HVAC::FanPlace::DrawThru) {
128 : // calculate fan heat to get fan air-side delta T
129 4 : Real64 FanCoolLoad = this->calcFanDesHeatGain(this->dataAirFlowUsedForSizing);
130 4 : if (this->dataDesInletAirHumRat > 0.0 && this->dataAirFlowUsedForSizing > 0.0) {
131 4 : Real64 CpAir = Psychrometrics::PsyCpAirFnW(this->dataDesInletAirHumRat);
132 4 : fanDeltaT = FanCoolLoad / (CpAir * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing);
133 4 : this->setDataDesAccountForFanHeat(state,
134 : false); // used in CoolingCapacitySizing calculations to avoid double counting fan heat
135 : }
136 : }
137 14 : this->autoSizedValue -= fanDeltaT;
138 : } else {
139 3 : this->autoSizedValue = this->finalSysSizing(this->curSysNum).CoolSupTemp;
140 3 : Real64 fanDeltaT = 0.0;
141 3 : if (this->primaryAirSystem(this->curSysNum).supFanPlace == HVAC::FanPlace::DrawThru) {
142 : // calculate fan heat to get fan air-side delta T
143 2 : Real64 FanCoolLoad = this->calcFanDesHeatGain(this->dataAirFlowUsedForSizing);
144 2 : if (this->dataDesInletAirHumRat > 0.0 && this->dataAirFlowUsedForSizing > 0.0) {
145 2 : Real64 CpAir = Psychrometrics::PsyCpAirFnW(this->dataDesInletAirHumRat);
146 2 : fanDeltaT = FanCoolLoad / (CpAir * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing);
147 2 : this->setDataDesAccountForFanHeat(state,
148 : false); // used in CoolingCapacitySizing calculations to avoid double counting fan heat
149 : }
150 : }
151 3 : this->autoSizedValue -= fanDeltaT;
152 : }
153 21 : if (this->autoSizedValue < this->dataDesInletWaterTemp && this->dataWaterFlowUsedForSizing > 0.0) {
154 2 : std::string msg = this->callingRoutine + ":" + " Coil=\"" + this->compName +
155 1 : "\", Cooling Coil has leaving air temperature < entering water temperature.";
156 1 : this->addErrorMessage(msg);
157 1 : ShowWarningError(state, msg);
158 1 : msg = format(" Tair,out = {:.3R}", this->autoSizedValue);
159 1 : ShowContinueError(state, msg);
160 1 : msg = format(" Twater,in = {:.3R}", this->dataDesInletWaterTemp);
161 1 : ShowContinueError(state, msg);
162 1 : this->autoSizedValue = this->dataDesInletWaterTemp + 0.5;
163 1 : msg = "....coil leaving air temperature will be reset to:";
164 1 : ShowContinueError(state, msg);
165 1 : msg = format(" Tair,out = {:.3R}", this->autoSizedValue);
166 1 : ShowContinueError(state, msg);
167 1 : }
168 : }
169 : }
170 : // override sizing string
171 41 : if (this->overrideSizeString) {
172 41 : if (this->isEpJSON) this->sizingString = "design_outlet_air_temperature [C]";
173 : }
174 41 : this->selectSizerOutput(state, errorsFound);
175 41 : if (this->isCoilReportObject) {
176 41 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilLvgAirTemp(state, this->compName, this->compType, this->autoSizedValue);
177 : }
178 41 : return this->autoSizedValue;
179 : }
180 :
181 1 : void CoolingWaterDesAirOutletTempSizer::clearState()
182 : {
183 1 : BaseSizerWithFanHeatInputs::clearState();
184 1 : }
185 :
186 : } // namespace EnergyPlus
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