Line data Source code
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47 :
48 : #include <EnergyPlus/Autosizing/HeatingWaterDesAirInletTempSizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataEnvironment.hh>
51 :
52 : namespace EnergyPlus {
53 :
54 53 : Real64 HeatingWaterDesAirInletTempSizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
55 : {
56 53 : if (!this->checkInitialized(state, errorsFound)) {
57 1 : return 0.0;
58 : }
59 52 : this->preSize(state, _originalValue);
60 :
61 52 : if (this->curZoneEqNum > 0) {
62 27 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
63 2 : this->autoSizedValue = _originalValue;
64 : } else {
65 25 : if (this->termUnitPIU && (this->curTermUnitSizingNum > 0)) {
66 1 : Real64 MinFlowFrac = this->termUnitSizing(this->curTermUnitSizingNum).MinPriFlowFrac;
67 1 : if (this->termUnitSizing(this->curTermUnitSizingNum).InducesPlenumAir) {
68 0 : this->autoSizedValue = (this->termUnitFinalZoneSizing(this->curTermUnitSizingNum).DesHeatCoilInTempTU * MinFlowFrac) +
69 0 : (this->termUnitFinalZoneSizing(this->curTermUnitSizingNum).ZoneRetTempAtHeatPeak * (1.0 - MinFlowFrac));
70 : } else {
71 1 : this->autoSizedValue = this->termUnitFinalZoneSizing(this->curTermUnitSizingNum).DesHeatCoilInTempTU * MinFlowFrac +
72 1 : this->finalZoneSizing(this->curZoneEqNum).ZoneTempAtHeatPeak * (1.0 - MinFlowFrac);
73 : }
74 25 : } else if (this->termUnitIU && (this->curTermUnitSizingNum > 0)) {
75 1 : this->autoSizedValue = this->termUnitFinalZoneSizing(this->curTermUnitSizingNum).ZoneTempAtHeatPeak;
76 23 : } else if (this->termUnitSingDuct && (this->curTermUnitSizingNum > 0)) {
77 7 : this->autoSizedValue = this->termUnitFinalZoneSizing(this->curTermUnitSizingNum).DesHeatCoilInTempTU;
78 : } else {
79 : Real64 DesMassFlow;
80 16 : if (this->zoneEqSizing(this->curZoneEqNum).SystemAirFlow) {
81 0 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).AirVolFlow * state.dataEnvrn->StdRhoAir;
82 16 : } else if (this->zoneEqSizing(this->curZoneEqNum).HeatingAirFlow) {
83 3 : DesMassFlow = this->zoneEqSizing(this->curZoneEqNum).HeatingAirVolFlow * state.dataEnvrn->StdRhoAir;
84 : } else {
85 13 : DesMassFlow = this->finalZoneSizing(this->curZoneEqNum).DesHeatMassFlow;
86 : }
87 16 : this->autoSizedValue = this->setHeatCoilInletTempForZoneEqSizing(
88 16 : this->setOAFracForZoneEqSizing(state, DesMassFlow, this->zoneEqSizing(this->curZoneEqNum)),
89 16 : this->zoneEqSizing(this->curZoneEqNum),
90 16 : this->finalZoneSizing(this->curZoneEqNum));
91 : }
92 : }
93 25 : } else if (this->curSysNum > 0) {
94 25 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
95 1 : this->autoSizedValue = _originalValue;
96 : } else {
97 24 : Real64 OutAirFrac = 1.0;
98 24 : if (this->curOASysNum > 0) {
99 5 : OutAirFrac = 1.0;
100 19 : } else if (this->finalSysSizing(this->curSysNum).HeatOAOption == this->minOA) {
101 2 : if (this->dataFlowUsedForSizing > 0.0) {
102 2 : OutAirFrac = this->finalSysSizing(this->curSysNum).DesOutAirVolFlow / this->dataFlowUsedForSizing;
103 : } else {
104 0 : OutAirFrac = 1.0;
105 : }
106 2 : OutAirFrac = min(1.0, max(0.0, OutAirFrac));
107 : }
108 : // coil inlet temperature
109 24 : if (this->curOASysNum == 0 && this->primaryAirSystem(this->curSysNum).NumOAHeatCoils > 0) {
110 0 : this->autoSizedValue = OutAirFrac * this->finalSysSizing(this->curSysNum).PreheatTemp +
111 0 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).HeatRetTemp;
112 24 : } else if (this->curOASysNum > 0 && this->outsideAirSys(this->curOASysNum).AirLoopDOASNum > -1) {
113 2 : this->autoSizedValue = this->airloopDOAS[this->outsideAirSys(this->curOASysNum).AirLoopDOASNum].HeatOutTemp;
114 : } else {
115 22 : this->autoSizedValue = OutAirFrac * this->finalSysSizing(this->curSysNum).HeatOutTemp +
116 22 : (1.0 - OutAirFrac) * this->finalSysSizing(this->curSysNum).HeatRetTemp;
117 : }
118 : }
119 : }
120 52 : if (this->overrideSizeString) {
121 52 : if (this->isEpJSON) this->sizingString = "rated_inlet_air_temperature";
122 : }
123 52 : this->selectSizerOutput(state, errorsFound);
124 : // report not written for OA coils and needs to be corrected
125 52 : if (this->curSysNum <= this->numPrimaryAirSys) {
126 45 : if (this->isCoilReportObject)
127 45 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilEntAirTemp(
128 45 : state, this->compName, this->compType, this->autoSizedValue, this->curSysNum, this->curZoneEqNum);
129 : }
130 52 : return this->autoSizedValue;
131 : }
132 :
133 : } // namespace EnergyPlus
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