Line data Source code
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47 :
48 : #include <EnergyPlus/Autosizing/WaterHeatingCoilUASizing.hh>
49 : #include <EnergyPlus/Data/EnergyPlusData.hh>
50 : #include <EnergyPlus/DataHVACGlobals.hh>
51 : #include <EnergyPlus/General.hh>
52 : #include <EnergyPlus/UtilityRoutines.hh>
53 : #include <EnergyPlus/WaterCoils.hh>
54 :
55 : namespace EnergyPlus {
56 :
57 47 : Real64 WaterHeatingCoilUASizer::size(EnergyPlusData &state, Real64 _originalValue, bool &errorsFound)
58 : {
59 47 : if (!this->checkInitialized(state, errorsFound)) {
60 1 : return 0.0;
61 : }
62 46 : Real64 constexpr Acc(0.0001); // Accuracy of result
63 46 : int constexpr MaxIte(500); // Maximum number of iterations
64 46 : int SolFla = 0; // Flag of solver
65 :
66 46 : this->preSize(state, _originalValue);
67 46 : if (this->curZoneEqNum > 0) {
68 23 : if (!this->wasAutoSized && !this->sizingDesRunThisZone) {
69 4 : this->autoSizedValue = _originalValue;
70 : } else {
71 19 : if (this->dataCapacityUsedForSizing > 0.0 && this->dataWaterFlowUsedForSizing > 0.0 && this->dataFlowUsedForSizing > 0.0) {
72 18 : Real64 UA0 = 0.001 * this->dataCapacityUsedForSizing;
73 18 : Real64 UA1 = this->dataCapacityUsedForSizing;
74 : // Invert the simple heating coil model: given the design inlet conditions and the design load,
75 : // find the design UA.
76 250 : auto f = [&state, this](Real64 const UA) {
77 250 : state.dataWaterCoils->WaterCoil(this->dataCoilNum).UACoilVariable = UA;
78 250 : WaterCoils::CalcSimpleHeatingCoil(state, this->dataCoilNum, this->dataFanOp, 1.0, state.dataWaterCoils->SimCalc);
79 250 : state.dataSize->DataDesignCoilCapacity = state.dataWaterCoils->WaterCoil(this->dataCoilNum).TotWaterHeatingCoilRate;
80 250 : return (dataCapacityUsedForSizing - state.dataWaterCoils->WaterCoil(this->dataCoilNum).TotWaterHeatingCoilRate) /
81 250 : dataCapacityUsedForSizing;
82 18 : };
83 18 : General::SolveRoot(state, Acc, MaxIte, SolFla, this->autoSizedValue, f, UA0, UA1);
84 18 : if (SolFla == -1) {
85 0 : errorsFound = true;
86 0 : std::string msg = "Autosizing of heating coil UA failed for Coil:Heating:Water \"" + this->compName + "\"";
87 0 : this->addErrorMessage(msg);
88 0 : ShowSevereError(state, msg);
89 0 : msg = " Iteration limit exceeded in calculating coil UA";
90 0 : this->addErrorMessage(msg);
91 0 : ShowContinueError(state, msg);
92 0 : msg = format(" Lower UA estimate = {:.6T} W/m2-K (0.1% of Design Coil Load)", UA0);
93 0 : this->addErrorMessage(msg);
94 0 : ShowContinueError(state, msg);
95 0 : msg = format(" Upper UA estimate = {:.6T} W/m2-K (100% of Design Coil Load)", UA1);
96 0 : this->addErrorMessage(msg);
97 0 : ShowContinueError(state, msg);
98 0 : msg = format(" Final UA estimate when iterations exceeded limit = {:.6T} W/m2-K", this->autoSizedValue);
99 0 : this->addErrorMessage(msg);
100 0 : ShowContinueError(state, msg);
101 0 : msg = " Zone \"" + this->finalZoneSizing(this->curZoneEqNum).ZoneName +
102 0 : "\" coil sizing conditions (may be different than Sizing inputs):";
103 0 : this->addErrorMessage(msg);
104 0 : ShowContinueError(state, msg);
105 0 : msg = format(" Coil inlet air temperature = {:.3T} C", this->dataDesInletAirTemp);
106 0 : this->addErrorMessage(msg);
107 0 : ShowContinueError(state, msg);
108 0 : msg = format(" Coil inlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesInletAirHumRat);
109 0 : this->addErrorMessage(msg);
110 0 : ShowContinueError(state, msg);
111 0 : msg = format(" Coil inlet air mass flow rate = {:.6T} kg/s", this->dataFlowUsedForSizing);
112 0 : this->addErrorMessage(msg);
113 0 : ShowContinueError(state, msg);
114 : // TotWaterHeatingCoilRate is set in CALL to CalcSimpleHeatingCoil
115 0 : msg = format(" Design Coil Capacity = {:.3T} W", this->dataDesignCoilCapacity);
116 0 : this->addErrorMessage(msg);
117 0 : ShowContinueError(state, msg);
118 0 : if (this->dataNomCapInpMeth) {
119 0 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
120 0 : this->addErrorMessage(msg);
121 0 : ShowContinueError(state, msg);
122 0 : msg = format(" Coil outlet air temperature = {:.3T} C", this->dataDesOutletAirTemp);
123 0 : this->addErrorMessage(msg);
124 0 : ShowContinueError(state, msg);
125 0 : msg = format(" Coil outlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesOutletAirHumRat);
126 0 : this->addErrorMessage(msg);
127 0 : ShowContinueError(state, msg);
128 0 : } else if (this->termUnitSingDuct || this->termUnitPIU || this->termUnitIU || this->zoneEqFanCoil) {
129 0 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
130 0 : this->addErrorMessage(msg);
131 0 : ShowContinueError(state, msg);
132 : } else {
133 0 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
134 0 : this->addErrorMessage(msg);
135 0 : ShowContinueError(state, msg);
136 0 : msg = format(" Coil outlet air temperature = {:.3T} C", this->finalZoneSizing(this->curZoneEqNum).HeatDesTemp);
137 0 : this->addErrorMessage(msg);
138 0 : ShowContinueError(state, msg);
139 0 : msg = format(" Coil outlet air humidity ratio = {:.3T} kgWater/kgDryAir",
140 0 : this->finalZoneSizing(this->curZoneEqNum).HeatDesHumRat);
141 0 : this->addErrorMessage(msg);
142 0 : ShowContinueError(state, msg);
143 : }
144 0 : this->dataErrorsFound = true;
145 18 : } else if (SolFla == -2) {
146 1 : this->errorType = AutoSizingResultType::ErrorType1;
147 1 : errorsFound = true;
148 1 : std::string msg = "Autosizing of heating coil UA failed for Coil:Heating:Water \"" + this->compName + "\"";
149 1 : this->addErrorMessage(msg);
150 1 : ShowSevereError(state, msg);
151 1 : msg = " Bad starting values for UA";
152 1 : this->addErrorMessage(msg);
153 1 : ShowContinueError(state, msg);
154 1 : msg = format(" Lower UA estimate = {:.6T} W/m2-K (0.1% of Design Coil Load)", UA0);
155 1 : this->addErrorMessage(msg);
156 1 : ShowContinueError(state, msg);
157 1 : msg = format(" Upper UA estimate = {:.6T} W/m2-K (100% of Design Coil Load)", UA1);
158 1 : this->addErrorMessage(msg);
159 1 : ShowContinueError(state, msg);
160 2 : msg = " Zone \"" + this->finalZoneSizing(this->curZoneEqNum).ZoneName +
161 1 : "\" coil sizing conditions (may be different than Sizing inputs):";
162 1 : this->addErrorMessage(msg);
163 1 : ShowContinueError(state, msg);
164 1 : msg = format(" Coil inlet air temperature = {:.3T} C", this->dataDesInletAirTemp);
165 1 : this->addErrorMessage(msg);
166 1 : ShowContinueError(state, msg);
167 1 : msg = format(" Coil inlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesInletAirHumRat);
168 1 : this->addErrorMessage(msg);
169 1 : ShowContinueError(state, msg);
170 1 : msg = format(" Coil inlet air mass flow rate = {:.6T} kg/s", this->dataFlowUsedForSizing);
171 1 : this->addErrorMessage(msg);
172 1 : ShowContinueError(state, msg);
173 1 : msg = format(" Design Coil Capacity = {:.3T} W", this->dataDesignCoilCapacity);
174 1 : this->addErrorMessage(msg);
175 1 : ShowContinueError(state, msg);
176 1 : if (this->dataNomCapInpMeth) {
177 0 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
178 0 : this->addErrorMessage(msg);
179 0 : ShowContinueError(state, msg);
180 0 : msg = format(" Coil outlet air temperature = {:.3T} C", this->dataDesOutletAirTemp);
181 0 : this->addErrorMessage(msg);
182 0 : ShowContinueError(state, msg);
183 0 : msg = format(" Coil outlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesOutletAirHumRat);
184 0 : this->addErrorMessage(msg);
185 0 : ShowContinueError(state, msg);
186 1 : } else if (this->termUnitSingDuct || this->termUnitPIU || this->termUnitIU || this->zoneEqFanCoil) {
187 1 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
188 1 : this->addErrorMessage(msg);
189 1 : ShowContinueError(state, msg);
190 : } else {
191 0 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
192 0 : this->addErrorMessage(msg);
193 0 : ShowContinueError(state, msg);
194 0 : msg = format(" Coil outlet air temperature = {:.3T} C", this->finalZoneSizing(this->curZoneEqNum).HeatDesTemp);
195 0 : this->addErrorMessage(msg);
196 0 : ShowContinueError(state, msg);
197 0 : msg = format(" Coil outlet air humidity ratio = {:.3T} kgWater/kgDryAir",
198 0 : this->finalZoneSizing(this->curZoneEqNum).HeatDesHumRat);
199 0 : this->addErrorMessage(msg);
200 0 : ShowContinueError(state, msg);
201 : }
202 : // TotWaterHeatingCoilRate is set in CALL to CalcSimpleHeatingCoil
203 1 : if (this->dataDesignCoilCapacity < this->dataCapacityUsedForSizing) {
204 0 : msg = " Inadequate water side capacity: in Plant Sizing for this hot water loop";
205 0 : this->addErrorMessage(msg);
206 0 : ShowContinueError(state, msg);
207 0 : msg = " increase design loop exit temperature and/or decrease design loop delta T";
208 0 : this->addErrorMessage(msg);
209 0 : ShowContinueError(state, msg);
210 0 : msg = " Plant Sizing object = " + this->plantSizData(this->dataPltSizHeatNum).PlantLoopName;
211 0 : this->addErrorMessage(msg);
212 0 : ShowContinueError(state, msg);
213 0 : msg = format(" Plant design loop exit temperature = {:.3T} C", this->plantSizData(this->dataPltSizHeatNum).ExitTemp);
214 0 : this->addErrorMessage(msg);
215 0 : ShowContinueError(state, msg);
216 0 : msg = format(" Plant design loop delta T = {:.3T} C", this->dataWaterCoilSizHeatDeltaT);
217 0 : this->addErrorMessage(msg);
218 0 : ShowContinueError(state, msg);
219 : }
220 1 : this->dataErrorsFound = true;
221 1 : }
222 18 : } else {
223 1 : this->autoSizedValue = 1.0;
224 1 : if (this->dataWaterFlowUsedForSizing > 0.0 && this->dataCapacityUsedForSizing == 0.0) {
225 0 : std::string msg = "The design coil load used for UA sizing is zero for Coil:Heating:Water " + this->compName;
226 0 : this->addErrorMessage(msg);
227 0 : ShowWarningError(state, msg);
228 0 : msg = "An autosize value for UA cannot be calculated";
229 0 : this->addErrorMessage(msg);
230 0 : ShowContinueError(state, msg);
231 0 : msg = "Input a value for UA, change the heating design day, or raise";
232 0 : this->addErrorMessage(msg);
233 0 : ShowContinueError(state, msg);
234 0 : msg = " the zone heating design supply air temperature";
235 0 : this->addErrorMessage(msg);
236 0 : ShowContinueError(state, msg);
237 0 : msg = "Water coil UA is set to 1 and the simulation continues.";
238 0 : this->addErrorMessage(msg);
239 0 : ShowContinueError(state, msg);
240 0 : }
241 : }
242 : }
243 23 : } else if (this->curSysNum > 0) {
244 23 : if (!this->wasAutoSized && !this->sizingDesRunThisAirSys) {
245 7 : this->autoSizedValue = _originalValue;
246 : } else {
247 16 : if (this->dataCapacityUsedForSizing >= HVAC::SmallLoad && this->dataWaterFlowUsedForSizing > 0.0 && this->dataFlowUsedForSizing > 0.0) {
248 16 : Real64 UA0 = 0.001 * this->dataCapacityUsedForSizing;
249 16 : Real64 UA1 = this->dataCapacityUsedForSizing;
250 : // Invert the simple heating coil model: given the design inlet conditions and the design load,
251 : // find the design UA.
252 244 : auto f = [&state, this](Real64 const UA) {
253 244 : state.dataWaterCoils->WaterCoil(this->dataCoilNum).UACoilVariable = UA;
254 244 : WaterCoils::CalcSimpleHeatingCoil(state, this->dataCoilNum, this->dataFanOp, 1.0, state.dataWaterCoils->SimCalc);
255 244 : state.dataSize->DataDesignCoilCapacity = state.dataWaterCoils->WaterCoil(this->dataCoilNum).TotWaterHeatingCoilRate;
256 244 : return (dataCapacityUsedForSizing - state.dataWaterCoils->WaterCoil(this->dataCoilNum).TotWaterHeatingCoilRate) /
257 244 : dataCapacityUsedForSizing;
258 16 : };
259 16 : General::SolveRoot(state, Acc, MaxIte, SolFla, this->autoSizedValue, f, UA0, UA1);
260 16 : if (SolFla == -1) {
261 0 : errorsFound = true;
262 0 : std::string msg = "Autosizing of heating coil UA failed for Coil:Heating:Water \"" + this->compName + "\"";
263 0 : this->addErrorMessage(msg);
264 0 : ShowSevereError(state, msg);
265 0 : msg = " Iteration limit exceeded in calculating coil UA";
266 0 : this->addErrorMessage(msg);
267 0 : ShowContinueError(state, msg);
268 0 : msg = format(" Lower UA estimate = {:.6T} W/m2-K (1% of Design Coil Load)", UA0);
269 0 : this->addErrorMessage(msg);
270 0 : ShowContinueError(state, msg);
271 0 : msg = format(" Upper UA estimate = {:.6T} W/m2-K (100% of Design Coil Load)", UA1);
272 0 : this->addErrorMessage(msg);
273 0 : ShowContinueError(state, msg);
274 0 : msg = format(" Final UA estimate when iterations exceeded limit = {:.6T} W/m2-K", this->autoSizedValue);
275 0 : this->addErrorMessage(msg);
276 0 : ShowContinueError(state, msg);
277 0 : msg = " AirloopHVAC \"" + this->finalSysSizing(this->curSysNum).AirPriLoopName +
278 0 : "\" coil sizing conditions (may be different than Sizing inputs):";
279 0 : this->addErrorMessage(msg);
280 0 : ShowContinueError(state, msg);
281 0 : msg = format(" Coil inlet air temperature = {:.3T} C", this->dataDesInletAirTemp);
282 0 : this->addErrorMessage(msg);
283 0 : ShowContinueError(state, msg);
284 0 : msg = format(" Coil inlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesInletAirHumRat);
285 0 : this->addErrorMessage(msg);
286 0 : ShowContinueError(state, msg);
287 0 : msg = format(" Coil inlet air mass flow rate = {:.6T} kg/s", this->dataFlowUsedForSizing);
288 0 : this->addErrorMessage(msg);
289 0 : ShowContinueError(state, msg);
290 0 : msg = format(" Design Coil Capacity = {:.3T} W", this->dataDesignCoilCapacity);
291 0 : this->addErrorMessage(msg);
292 0 : ShowContinueError(state, msg);
293 0 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
294 0 : this->addErrorMessage(msg);
295 0 : ShowContinueError(state, msg);
296 0 : if (this->dataNomCapInpMeth) {
297 0 : msg = format(" Coil outlet air temperature = {:.3T} C", this->dataDesOutletAirTemp);
298 0 : this->addErrorMessage(msg);
299 0 : ShowContinueError(state, msg);
300 0 : msg = format(" Coil outlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesOutletAirHumRat);
301 0 : this->addErrorMessage(msg);
302 0 : ShowContinueError(state, msg);
303 : }
304 0 : this->dataErrorsFound = true;
305 16 : } else if (SolFla == -2) {
306 1 : this->errorType = AutoSizingResultType::ErrorType1;
307 1 : errorsFound = true;
308 1 : std::string msg = "Autosizing of heating coil UA failed for Coil:Heating:Water \"" + this->compName + "\"";
309 1 : this->addErrorMessage(msg);
310 1 : ShowSevereError(state, msg);
311 1 : msg = " Bad starting values for UA";
312 1 : this->addErrorMessage(msg);
313 1 : ShowContinueError(state, msg);
314 1 : msg = format(" Lower UA estimate = {:.6T} W/m2-K (1% of Design Coil Load)", UA0);
315 1 : this->addErrorMessage(msg);
316 1 : ShowContinueError(state, msg);
317 1 : msg = format(" Upper UA estimate = {:.6T} W/m2-K (100% of Design Coil Load)", UA1);
318 1 : this->addErrorMessage(msg);
319 1 : ShowContinueError(state, msg);
320 2 : msg = " AirloopHVAC \"" + this->finalSysSizing(this->curSysNum).AirPriLoopName +
321 1 : "\" coil sizing conditions (may be different than Sizing inputs):";
322 1 : this->addErrorMessage(msg);
323 1 : ShowContinueError(state, msg);
324 1 : msg = format(" Coil inlet air temperature = {:.3T} C", this->dataDesInletAirTemp);
325 1 : this->addErrorMessage(msg);
326 1 : ShowContinueError(state, msg);
327 1 : msg = format(" Coil inlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesInletAirHumRat);
328 1 : this->addErrorMessage(msg);
329 1 : ShowContinueError(state, msg);
330 1 : msg = format(" Coil inlet air mass flow rate = {:.6T} kg/s", this->dataFlowUsedForSizing);
331 1 : this->addErrorMessage(msg);
332 1 : ShowContinueError(state, msg);
333 1 : msg = format(" Design Coil Capacity = {:.3T} W", this->dataDesignCoilCapacity);
334 1 : this->addErrorMessage(msg);
335 1 : ShowContinueError(state, msg);
336 1 : msg = format(" Design Coil Load = {:.3T} W", this->dataCapacityUsedForSizing);
337 1 : this->addErrorMessage(msg);
338 1 : ShowContinueError(state, msg);
339 1 : if (this->dataNomCapInpMeth) {
340 0 : msg = format(" Coil outlet air temperature = {:.3T} C", this->dataDesOutletAirTemp);
341 0 : this->addErrorMessage(msg);
342 0 : ShowContinueError(state, msg);
343 0 : msg = format(" Coil outlet air humidity ratio = {:.3T} kgWater/kgDryAir", this->dataDesOutletAirHumRat);
344 0 : this->addErrorMessage(msg);
345 0 : ShowContinueError(state, msg);
346 : }
347 1 : if (this->dataDesignCoilCapacity < this->dataCapacityUsedForSizing && !this->dataNomCapInpMeth) {
348 0 : msg = " Inadequate water side capacity: in Plant Sizing for this hot water loop";
349 0 : this->addErrorMessage(msg);
350 0 : ShowContinueError(state, msg);
351 0 : msg = " increase design loop exit temperature and/or decrease design loop delta T";
352 0 : this->addErrorMessage(msg);
353 0 : ShowContinueError(state, msg);
354 0 : msg = " Plant Sizing object = " + this->plantSizData(this->dataPltSizHeatNum).PlantLoopName;
355 0 : this->addErrorMessage(msg);
356 0 : ShowContinueError(state, msg);
357 0 : msg = format(" Plant design loop exit temperature = {:.3T} C", this->plantSizData(this->dataPltSizHeatNum).ExitTemp);
358 0 : this->addErrorMessage(msg);
359 0 : ShowContinueError(state, msg);
360 0 : msg = format(" Plant design loop delta T = {:.3T} C", this->dataWaterCoilSizHeatDeltaT);
361 0 : this->addErrorMessage(msg);
362 0 : ShowContinueError(state, msg);
363 : }
364 1 : this->dataErrorsFound = true;
365 1 : }
366 16 : } else {
367 0 : this->autoSizedValue = 1.0;
368 0 : if (this->dataWaterFlowUsedForSizing > 0.0 && this->dataCapacityUsedForSizing < HVAC::SmallLoad) {
369 0 : std::string msg = "The design coil load used for UA sizing is zero for Coil:Heating:Water " + this->compName;
370 0 : this->addErrorMessage(msg);
371 0 : ShowWarningError(state, msg);
372 0 : msg = "An autosize value for UA cannot be calculated";
373 0 : this->addErrorMessage(msg);
374 0 : ShowContinueError(state, msg);
375 0 : msg = "Input a value for UA, change the heating design day, or raise";
376 0 : this->addErrorMessage(msg);
377 0 : ShowContinueError(state, msg);
378 0 : msg = " the zone heating design supply air temperature";
379 0 : this->addErrorMessage(msg);
380 0 : ShowContinueError(state, msg);
381 0 : msg = "Water coil UA is set to 1 and the simulation continues.";
382 0 : this->addErrorMessage(msg);
383 0 : ShowContinueError(state, msg);
384 0 : }
385 : }
386 : }
387 : }
388 46 : if (this->dataErrorsFound) state.dataSize->DataErrorsFound = true;
389 46 : if (this->overrideSizeString) {
390 46 : if (this->isEpJSON) this->sizingString = "u-factor_times_area_value [W/K]";
391 : }
392 46 : this->selectSizerOutput(state, errorsFound);
393 46 : if (this->isCoilReportObject && this->curSysNum <= state.dataHVACGlobal->NumPrimaryAirSys) {
394 39 : state.dataRptCoilSelection->coilSelectionReportObj->setCoilUA(state,
395 39 : this->compName,
396 39 : this->compType,
397 : this->autoSizedValue,
398 : this->dataCapacityUsedForSizing,
399 39 : this->wasAutoSized,
400 : this->curSysNum,
401 : this->curZoneEqNum);
402 : }
403 46 : return this->autoSizedValue;
404 : }
405 :
406 : } // namespace EnergyPlus
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