Dear List,Â
I have this model that is giving me trouble and I am not sure where to look next in tracking down the issue. It seems that the temperature source object and heat pump system is somehow getting very when it should be cool. Everything is autosized and seems to be setup correctly, but the model crashes from too high of temperatures. Any help or suggestions are appreciated, many thanks.Â
Program Version,EnergyPlus, Version 8.8, YMD=2016.03.03 14:10,IDD_Version 8.8.0.009
  ** Warning ** Version: in IDF="8.1" not the same as expected="8.8.0"
  ************* Beginning Zone Sizing Calculations
  ************* Beginning System Sizing Calculations
  ** Warning ** GetAirPathData: AirLoopHVAC="AIR LOOP" has no Controllers.
  ************* Beginning Plant Sizing Calculations
  ************* Testing Individual Branch Integrity
  ************* All Branches passed integrity testing
  ************* Testing Individual Supply Air Path Integrity
  ************* All Supply Air Paths passed integrity testing
  ************* Testing Individual Return Air Path Integrity
  ************* All Return Air Paths passed integrity testing
  ************* No node connection errors were found.
  ************* Beginning Simulation
  ** Warning ** GetDensityGlycol: Temperature is out of range (too high) for fluid [WATER] density **
  **  ~~~  ** ..Called From:NodeReportingCalc:HEAT PUMP COOLING CONDENSER OUTLET NODE,Temperature=[100.30], supplied data range=[0.00,100.00]
  **  ~~~  **  Environment=LUGANO, at Simulation time=02/10 06:20 - 06:30
  ** Warning ** HeatPump:WatertoWater:EquationFit:Cooling "HEAT PUMP COOLING":
  **  ~~~  **  Cooling capacity curve output is <= 0.0 (-1.7242).
  **  ~~~  **  Zero or negative value occurs with a load-side inlet temperature of 23.55 C,
  **  ~~~  **  a source-side inlet temperature of 105.47 C,
  **  ~~~  **  a load-side mass flow rate of 0.173 kg/s,
  **  ~~~  **  and a source-side mass flow rate of 0.569 kg/s.
  **  ~~~  **  The heat pump is turned off for this time step but simulation continues.
  **  ~~~  **  Environment=LUGANO, at Simulation time=02/10 09:10 - 09:20
  ** Warning ** GetSpecificHeatGlycol: Temperature is out of range (too high) for fluid [WATER] specific heat **
  **  ~~~  ** ..Called From:PlantLoopSolver::UpdateAnyLoopDemandAlterations,Temperature=[125.11], supplied data range=[0.00,125.00]
  **  ~~~  **  Environment=LUGANO, at Simulation time=04/06 16:20 - 16:30
  ************* Simulation Error Summary *************
  ** Warning ** The following Report Variables were requested but not generated
  **  ~~~  ** because IDF did not contain these elements or misspelled variable name -- check .rdd file
  ************* Key=*, VarName=ELECTRICITYPURCHASED:FACILITY, Frequency=Annual
  ************* There are 68 unused schedules in input.
  ************* Use Output:Diagnostics,DisplayUnusedSchedules; to see them.
  *************
  ************* ===== Recurring Error Summary =====
  ************* The following recurring error messages occurred.
  *************
  *************  ** Warning ** Plant loop exceeding upper temperature limit, PlantLoop="CONDENSER LOOP"
  *************  **  ~~~  **  This error occurred 104020 total times;
  *************  **  ~~~  **  during Warmup 0 times;
  *************  **  ~~~  **  during Sizing 0 times.
  *************  **  ~~~  **  Max=147.629273
  *************
  *************  ** Warning ** GetDensityGlycol: Temperature out of range (too high) for fluid [WATER] density **
  *************  **  ~~~  **  This error occurred 1491774 total times;
  *************  **  ~~~  **  during Warmup 0 times;
  *************  **  ~~~  **  during Sizing 0 times.
  *************  **  ~~~  **  Max=147.629273 {C}  Min=100.008674 {C}
  *************
  *************  ** Warning ** HeatPump:WatertoWater:EquationFit:Cooling "HEAT PUMP COOLING": Cooling capacity curve output is <= 0.0 warning continues...
  *************  **  ~~~  **  This error occurred 20992 total times;
  *************  **  ~~~  **  during Warmup 0 times;
  *************  **  ~~~  **  during Sizing 0 times.
  *************  **  ~~~  **  Max=-1.890814E-003  Min=-832.566864
  *************
  *************  ** Warning ** GetSpecificHeatGlycol: Temperature out of range (too high) for fluid [WATER] specific heat **
  *************  **  ~~~  **  This error occurred 2154094 total times;
  *************  **  ~~~  **  during Warmup 0 times;
  *************  **  ~~~  **  during Sizing 0 times.
  *************  **  ~~~  **  Max=148.423393 {C}  Min=125.012047 {C}
  *************
  ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
  ************* EnergyPlus Sizing Error Summary. During Sizing: 1 Warning; 0 Severe Errors.
  ************* EnergyPlus Completed Successfully-- 3770884 Warning; 0 Severe Errors; Elapsed Time=00hr 13min 58.86sec
Jeremiah Crossett | Chief Technological Officer | NRGSIM INC. | 7409 SW Capitol Highway Portland OR, 97219 | 503-688-8951Â