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47 :
48 : #include <EnergyPlus/Autosizing/CoolingWaterDesAirInletTempSizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataEnvironment.hh>
51 : #include <EnergyPlus/Psychrometrics.hh>
52 :
53 : namespace EnergyPlus {
54 :
55 443 : Real64 CoolingWaterDesAirInletTempSizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
56 : {
57 443 : if (!this->checkInitialized(state, errorsFound)) {
58 0 : return 0.0;
59 : }
60 443 : this->preSize(state, _originalValue);
61 443 : if (this->curZoneEqNum > 0) {
62 92 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
63 0 : this->autoSizedValue = _originalValue;
64 : } else {
65 92 : if (this->termUnitIU) {
66 4 : this->autoSizedValue = this->finalZoneSizing(this->curZoneEqNum).ZoneTempAtCoolPeak;
67 88 : } else if (this->zoneEqFanCoil) {
68 81 : Real64 DesMassFlow = this->finalZoneSizing(this->curZoneEqNum).DesCoolMassFlow;
69 243 : this->autoSizedValue = this->setCoolCoilInletTempForZoneEqSizing(
70 81 : this->setOAFracForZoneEqSizing(state, DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
71 81 : this->zoneEqSizing(this->curZoneEqNum),
72 81 : this->finalZoneSizing(this->curZoneEqNum));
73 : } else {
74 7 : this->autoSizedValue = this->finalZoneSizing(this->curZoneEqNum).DesCoolCoilInTemp;
75 : }
76 92 : Real64 fanDeltaT = 0.0;
77 92 : if (this->dataFanPlacement == DataSizing::ZoneFanPlacement::BlowThru) {
78 : // calculate fan heat to get fan air-side delta T
79 88 : Real64 FanCoolLoad = this->calcFanDesHeatGain(this->dataAirFlowUsedForSizing);
80 88 : if (this->dataDesInletAirHumRat > 0.0 && this->dataAirFlowUsedForSizing > 0.0) {
81 88 : Real64 CpAir = Psychrometrics::PsyCpAirFnW(this->dataDesInletAirHumRat);
82 88 : fanDeltaT = FanCoolLoad / (CpAir * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing);
83 : }
84 : }
85 92 : this->autoSizedValue += fanDeltaT;
86 : }
87 351 : } else if (this->curSysNum > 0) {
88 351 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
89 0 : this->autoSizedValue = _originalValue;
90 : } else {
91 351 : if (this->curOASysNum > 0) { // coil is in OA stream
92 28 : if (this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
93 1 : this->autoSizedValue = this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].SizingCoolOATemp;
94 : } else {
95 27 : this->autoSizedValue = this->finalSysSizing(this->curSysNum).OutTempAtCoolPeak;
96 : }
97 : } else { // coil is in main air loop
98 323 : if (this->primaryAirSystem(this->curSysNum).NumOACoolCoils == 0) { // there is no precooling of the OA stream
99 298 : this->autoSizedValue = this->finalSysSizing(this->curSysNum).MixTempAtCoolPeak;
100 25 : } else if (this->dataDesInletAirTemp > 0.0) {
101 0 : this->autoSizedValue = this->dataDesInletAirTemp;
102 : } else { // there is precooling of the OA stream
103 25 : Real64 OutAirFrac = 1.0;
104 25 : if (this->dataFlowUsedForSizing > 0.0) {
105 25 : OutAirFrac = this->finalSysSizing(this->curSysNum).DesOutAirVolFlow / this->dataFlowUsedForSizing;
106 : }
107 25 : OutAirFrac = min(1.0, max(0.0, OutAirFrac));
108 50 : this->autoSizedValue = OutAirFrac * this->finalSysSizing(this->curSysNum).PrecoolTemp +
109 25 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).RetTempAtCoolPeak;
110 : }
111 323 : Real64 fanDeltaT = 0.0;
112 323 : if (this->primaryAirSystem(this->curSysNum).supFanLocation == DataAirSystems::FanPlacement::BlowThru) {
113 : // calculate fan heat to get fan air-side delta T
114 17 : Real64 FanCoolLoad = this->calcFanDesHeatGain(this->dataAirFlowUsedForSizing);
115 17 : if (this->dataDesInletAirHumRat > 0.0 && this->dataAirFlowUsedForSizing > 0.0) {
116 17 : Real64 CpAir = Psychrometrics::PsyCpAirFnW(this->dataDesInletAirHumRat);
117 17 : fanDeltaT = FanCoolLoad / (CpAir * state.dataEnvrn->StdRhoAir * this->dataAirFlowUsedForSizing);
118 17 : this->setDataDesAccountForFanHeat(state,
119 : false); // used in CoolingCapacitySizing calculations to avoid double counting fan heat
120 : }
121 : }
122 323 : this->autoSizedValue += fanDeltaT;
123 : }
124 : }
125 : }
126 : // override sizing string
127 443 : if (this->overrideSizeString) {
128 443 : if (this->isEpJSON) this->sizingString = "design_inlet_air_temperature [C]";
129 : }
130 443 : this->selectSizerOutput(state, errorsFound);
131 443 : if (this->isCoilReportObject) {
132 443 : if (this->curSysNum <= this->numPrimaryAirSys) {
133 442 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilEntAirTemp(
134 : state, this->compName, this->compType, this->autoSizedValue, this->curSysNum, this->curZoneEqNum);
135 : }
136 : }
137 443 : return this->autoSizedValue;
138 : }
139 :
140 0 : void CoolingWaterDesAirInletTempSizer::clearState()
141 : {
142 0 : BaseSizerWithFanHeatInputs::clearState();
143 0 : }
144 :
145 2313 : } // namespace EnergyPlus
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