As I tried to integrate non-HVAC load on the hot water loop of a model (using the "LoadProfile:Plant" object), I got the following errors:
Warning ** GetSpecificHeatGlycol: Temperature out of range (too low) for fluid [WATER] specific heat ** ~~~ ** This error occurred 7028 total times; ~~~ ** during Warmup 0 times; ~~~ ** during Sizing 0 times. ~~~ ** Max=-586.012959 {C} Min=-43318170.244665 {C}
But I couldn't find any node with such temperatures. As I tried to understand where did this problem come from, I got a fatal error when simulating with total plant loop volume = 0. I got the following error message:
** Severe ** Plant temperatures are getting far too cold, check controls and relative loads and capacities ** ~~~ ** During Warmup, Environment=UNTITLED, at Simulation time=01/01 07:30 - 08:00 ** ~~~ ** PlantLoop Name (DemandSide)= HW LOOP ** ~~~ ** PlantLoop Setpoint Temperature=80.0 {C} ** ~~~ ** PlantLoop Inlet Node (SupplySide) does not have a Setpoint. ** ~~~ ** PlantLoop Inlet Node (DemandSide) does not have a Setpoint. ** ~~~ ** PlantLoop Outlet Node (SupplySide) has a Setpoint. ** ~~~ ** PlantLoop Outlet Node (DemandSide) does not have a Setpoint. ** ~~~ ** PlantLoop Outlet Node (DemandSide) "HW LOOP DEMAND SIDE OUTLET" has temperature=-126.0 {C} ** ~~~ ** PlantLoop Inlet Node (DemandSide) "HW LOOP DEMAND SIDE INLET" has temperature=4.4 {C} ** ~~~ ** PlantLoop Minimum Temperature=0.0 {C} ** ~~~ ** PlantLoop Maximum Temperature=100.0 {C} ** ~~~ ** PlantLoop Flow Request (SupplySide)=1.9 {kg/s} ** ~~~ ** PlantLoop Flow Request (DemandSide)=60.9 {kg/s} ** ~~~ ** PlantLoop Node (DemandSide) "HW LOOP DEMAND SIDE OUTLET" has mass flow rate =60.9 {kg/s} ** ~~~ ** PlantLoop PumpHeat (SupplySide)=0.0 {W} ** ~~~ ** PlantLoop PumpHeat (DemandSide)=0.0 {W} ** ~~~ ** PlantLoop Cooling Demand=0.0 {W} ** ~~~ ** PlantLoop Heating Demand=32513926.3 {W} ** ~~~ ** PlantLoop Demand not Dispatched=29513926.3 {W}