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Chiller loop getting to 322C in first timestep of design day and causing Severe error

I'm having some difficulty running a simulation. The error is below. There's no reason why the chiller loop should be this hot. I think it's just a numerical error because it's during the simulation of the first time step of a design day, the previous design days simulate just fine, and I bet the rest of the simulation would run just fine if I could get EnergyPlus to ignore the high temperature for a couple time steps. Oddly, I can get the error to go away by changing the storage capacity of the thermal energy storage ice tank that the chiller is feeding into. Any ideas on how I could get energyplus to ignore the high temp for just a little bit?

Workaround below, but still no solution.

** Severe  **
Plant temperatures are getting far too hot, check controls and relative loads and capacities
During Warmup, Environment=TORRANCE-MUNICIPAL ANN CLG 1% CONDNS DB=>MCWB, at Simulation time=08/21 00:04 - 00:06
PlantLoop Name (SupplySide)= CHILLED WATER LOOP PRIMARY WATER LOOP ICE TANK CHILLER HEAT EXCHANGER HALF
PlantLoop Setpoint Temperature=-5.0 {C}

PlantLoop Outlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY OUTLET" has temperature=322.3 {C}
PlantLoop  Inlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY INLET" has temperature=-4.5 {C}


Post Script
I just tried the obvious idea of changing the time step. A timestep of 10 minutes gave the 322C error, a timestep of 1 minute gave a 491C error, and a timestep of 30 minutes gave a 359C error.
Post Post Script
I came up with a workaround. I increased the Maximum Loop Temperature field of the PlantLoop object to 400C and got these errors for a simulation running from 5/1 to 10/1.

Warning GetSpecificHeatGlycol: Temperature out of range (too high) for fluid [ETHYLENEGLYCOL40PERCENT] specific heat 
   *************  **   ~~~   **   This error occurred 718 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=595.421006 {C}  Min=127.188615 {C}
   *************
   *************  ** Warning ** GetDensityGlycol: Temperature out of range (too high) for fluid [ETHYLENEGLYCOL40PERCENT] density **
   *************  **   ~~~   **   This error occurred 144 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=595.421006 {C}  Min=127.191025 {C}
   *************
   *************  ** Warning ** Plant loop exceeding upper temperature limit, PlantLoop="CHILLED WATER LOOP PRIMARY WATER LOOP ICE TANK CHILLER HEAT EXCHANGER HALF"
   *************  **   ~~~   **   This error occurred 2 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=521.753501


I also looked the System Node Temperature for the node that was getting to 322C before and it does not report a termperature outside -10C to 10C. So looks like something's wrong with energyplus, possibly as simple as an overly aggressive error condition.

Chiller loop getting to 322C in first timestep of design day and causing Severe error

I'm having some difficulty running a simulation. The error is below. There's no reason why the chiller loop should be this hot. I think it's just a numerical error because it's during the simulation of the first time step of a design day, the previous design days simulate just fine, and I bet the rest of the simulation would run just fine if I could get EnergyPlus to ignore the high temperature for a couple time steps. Oddly, I can get the error to go away by changing the storage capacity of the thermal energy storage ice tank that the chiller is feeding into. Any ideas on how I could get energyplus to ignore the high temp for just a little bit?

Workaround below, but still no solution.

** Severe  **
Plant temperatures are getting far too hot, check controls and relative loads and capacities
During Warmup, Environment=TORRANCE-MUNICIPAL ANN CLG 1% CONDNS DB=>MCWB, at Simulation time=08/21 00:04 - 00:06
PlantLoop Name (SupplySide)= CHILLED WATER LOOP PRIMARY WATER LOOP ICE TANK CHILLER HEAT EXCHANGER HALF
PlantLoop Setpoint Temperature=-5.0 {C}

PlantLoop Outlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY OUTLET" has temperature=322.3 {C}
PlantLoop  Inlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY INLET" has temperature=-4.5 {C}


Post Script
I just tried the obvious idea of changing the time step. A timestep of 10 minutes gave the 322C error, a timestep of 1 minute gave a 491C error, and a timestep of 30 minutes gave a 359C error.
Post Post Script
I came up with a workaround. I increased the Maximum Loop Temperature field of the PlantLoop object to 400C and got these errors for a simulation running from 5/1 to 10/1.
error.

Warning GetSpecificHeatGlycol: Temperature out of range (too high) for fluid [ETHYLENEGLYCOL40PERCENT] specific heat 
   *************  **   ~~~   **   This error occurred 718 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=595.421006 {C}  Min=127.188615 {C}
   *************
   *************  ** Warning ** GetDensityGlycol: Temperature out of range (too high) for fluid [ETHYLENEGLYCOL40PERCENT] density **
   *************  **   ~~~   **   This error occurred 144 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=595.421006 {C}  Min=127.191025 {C}
   *************
   *************  ** Warning ** Plant loop exceeding upper temperature limit, PlantLoop="CHILLED WATER LOOP PRIMARY WATER LOOP ICE TANK CHILLER HEAT EXCHANGER HALF"
   *************  **   ~~~   **   This error occurred 2 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=521.753501


I also looked the System Node Temperature for the node that was getting to 322C before and it does not report a termperature outside -10C to 10C. So looks like something's wrong with energyplus, possibly as simple as an overly aggressive error condition.

Chiller loop getting to 322C in design day and causing Severe error

I'm having some difficulty running a simulation. The error is below. There's no reason why the chiller loop should be this hot. I think it's just a numerical error because it's during the simulation of the first time step of a design day, the previous design days simulate just fine, and I bet the rest of the simulation would run just fine if I could get EnergyPlus to ignore the high temperature for a couple time steps. Oddly, I can get the error to go away by changing the storage capacity of the thermal energy storage ice tank that the chiller is feeding into. Any ideas on how I could get energyplus to ignore the high temp for just a little bit?

** Severe  **
Plant temperatures are getting far too hot, check controls and relative loads and capacities
During Warmup, Environment=TORRANCE-MUNICIPAL ANN CLG 1% CONDNS DB=>MCWB, at Simulation time=08/21 00:04 - 00:06
PlantLoop Name (SupplySide)= CHILLED WATER LOOP PRIMARY WATER LOOP ICE TANK CHILLER HEAT EXCHANGER HALF
PlantLoop Setpoint Temperature=-5.0 {C}

PlantLoop Outlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY OUTLET" has temperature=322.3 {C}
PlantLoop  Inlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY INLET" has temperature=-4.5 {C}


Post Script
I just tried the obvious idea of changing the time step. A timestep of 10 minutes gave the 322C error, a timestep of 1 minute gave a 491C error, and a timestep of 30 minutes gave a 359C error.

Chiller loop getting to 322C in design day and causing Severe error

I'm having some difficulty running a simulation. The error is below. There's no reason why the chiller loop should be this hot. I think it's just a numerical error because it's during the simulation of the first time step of a design day, the previous design days simulate just fine, and I bet the rest of the simulation would run just fine if I could get EnergyPlus to ignore the high temperature for a couple time steps. Oddly, I can get the error to go away by changing the storage capacity of the thermal energy storage ice tank that the chiller is feeding into. Any ideas on how I could get energyplus to ignore the high temp for just a little bit?

** Severe  **
Plant temperatures are getting far too hot, check controls and relative loads and capacities
During Warmup, Environment=TORRANCE-MUNICIPAL ANN CLG 1% CONDNS DB=>MCWB, at Simulation time=08/21 00:04 - 00:06
PlantLoop Name (SupplySide)= CHILLED WATER LOOP PRIMARY WATER LOOP ICE TANK CHILLER HEAT EXCHANGER HALF
PlantLoop Setpoint Temperature=-5.0 {C}

PlantLoop Outlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY OUTLET" has temperature=322.3 {C}
PlantLoop  Inlet Node (SupplySide) "CHILLED WATER LOOP CHW PRI SUPPLY INLET" has temperature=-4.5 {C}


Post Script
I just tried the obvious idea of changing the time step. A timestep of 10 minutes gave the 322C error, a timestep of 1 minute gave a 491C error, and a timestep of 30 minutes gave a 359C error.