Environment - simulationEnvironment: startTime=0 stopTime=86400 tolerance=1e-06 numberOfIntervals=2500 stepSize=34.56 Regular simulation: ./Buildings_8_Buildings.Fluid.HeatExchangers.DXCoils.WaterCooled.Validation.VariableSpeedEnergyPlusPartLoad -abortSlowSimulation -alarm=480 -lv LOG_STATS LOG_NLS | error | residualFunc1210: Iteration variable xloc[2] is nan. LOG_ASSERT | debug | residualFunc1210 failed at time=0. | | | | For more information please use -lv LOG_NLS. LOG_STDOUT | warning | While solving non-linear system an assertion failed during initialization. | | | | | The non-linear solver tries to solve the problem that could take some time. | | | | | It could help to provide better start-values for the iteration variables. | | | | | For more information simulate with -lv LOG_NLS_V LOG_NLS | error | residualFunc1210: Iteration variable xloc[6] is nan. LOG_ASSERT | debug | residualFunc1210 failed at time=0. | | | | For more information please use -lv LOG_NLS. LOG_NLS | error | residualFunc1210: Iteration variable xloc[2] is nan. LOG_ASSERT | debug | residualFunc1210 failed at time=0. | | | | For more information please use -lv LOG_NLS. LOG_NLS | error | residualFunc1210: Iteration variable xloc[2] is nan. LOG_ASSERT | debug | residualFunc1210 failed at time=0. | | | | For more information please use -lv LOG_NLS. LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:187:3-196:27:writable] | | | | The following assertion has been violated during initialization at time 0.000000 | | | | ((varSpeDX.eva.eva.nomVal.gamma <= varSpeDX.eva.eva.gammaMax)) --> "*** Warning: In DX coil model, gamma is too large for these coil conditions. | | | | Instead of gamma = 1.5, a value of 0.346977, which | | | | corresponds to a mass transfer effectiveness of 0.8, will be used. | | | | Coil nominal performance data are: | | | | nomVal.m_flow_nominal = 0.462462 | | | | dX_nominal = XEvaOut_nominal-XEvaWetBulOut_nominal = 0.00571197 - 0.00634552 = -0.000633544 | | | | QLat_flow_nominal = -1689.5 | | | | " LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:173:3-181:28:writable] | | | | The following assertion has been violated during initialization at time 0.000000 | | | | ((varSpeDX.eva.eva.dX_nominal > 1e-10)) --> "*** Warning: In DX coil model, dX_nominal = -0.000633544 | | | | This means that the coil is not dehumidifying air at the nominal conditions. | | | | Check nominal parameters. | | | | Nominal values: | | | | Q_flow_nominal = -6758 | | | | COP_nominal = 4 | | | | m_flow_nominal = 0.462462 | | | | TEvaIn_nominal = 292.59 (= 19.44 degC) | | | | TConIn_nominal = 302.55 (= 29.4 degC) | | | | phiIn_nominal = 0.5148 | | | | tWet = 1400 | | | | gamma = 1.5 | | | | p_nominal = 101325 | | | | " LOG_SUCCESS | info | The initialization finished successfully with 3 homotopy steps. LOG_ASSERT | info | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:59:3-60:49:writable] | | | | The following assertion has been violated at time 17.280000 | | | | ((varSpeDX.eva.eva.m >= 0.0)) --> "Variable violating min constraint: 0.0 <= varSpeDX.eva.eva.m, has value: -4.29448e-25" LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.0807987s reading init.xml | | | | | | 0.00636972s reading info.xml | | | | | | 0.000150863s [ 0.0%] pre-initialization | | | | | | 0.00124044s [ 0.4%] initialization | | | | | | 0.000105679s [ 0.0%] steps | | | | | | 0.00549233s [ 1.7%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 0.00671207s [ 2.1%] event-handling | | | | | | 0.017205s [ 5.4%] overhead | | | | | | 0.287252s [ 90.3%] simulation | | | | | | 0.318158s [100.0%] total | | | | | events | | | | | | 23 state events | | | | | | 24 time events | | | | | solver: dassl | | | | | | 1657 steps taken | | | | | | 1884 calls of functionODE | | | | | | 1257 evaluations of jacobian | | | | | | 11 error test failures | | | | | | 0 convergence test failures | | | | | | 0.077933s time of jacobian evaluation LOG_SUCCESS | info | The simulation finished successfully.