Regular simulation: ./Buildings_master_Buildings.Fluid.HeatExchangers.DXCoils.AirCooled.Examples.SpaceCooling -abortSlowSimulation -alarm=480 -lv LOG_STATS stdout | info | ... loading "tab1" from "/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.0.0-master/Resources/weatherdata/USA_IL_Chicago-OHare.Intl.AP.725300_TMY3.mos" assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | fan.nominalValuesDefineDefaultPressureCurve assert | warning | *** Warning: You are using a flow or pressure controlled mover with the | | | | default pressure curve. | | | | This leads to approximate calculations of the electrical power | | | | consumption. Add the correct pressure curve in the record per | | | | to obtain an accurate computation. | | | | Setting nominalValuesDefineDefaultPressureCurve=true will suppress this warning. assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | fan1.nominalValuesDefineDefaultPressureCurve assert | warning | *** Warning: You are using a flow or pressure controlled mover with the | | | | default pressure curve. | | | | This leads to approximate calculations of the electrical power | | | | consumption. Add the correct pressure curve in the record per | | | | to obtain an accurate computation. | | | | Setting nominalValuesDefineDefaultPressureCurve=true will suppress this warning. assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | fan2.nominalValuesDefineDefaultPressureCurve assert | warning | *** Warning: You are using a flow or pressure controlled mover with the | | | | default pressure curve. | | | | This leads to approximate calculations of the electrical power | | | | consumption. Add the correct pressure curve in the record per | | | | to obtain an accurate computation. | | | | Setting nominalValuesDefineDefaultPressureCurve=true will suppress this warning. assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | varSpeDX.eva.nomVal.gamma <= varSpeDX.eva.gammaMax assert | warning | *** Warning: In DX coil model, gamma is too large for these coil conditions. | | | | Instead of gamma = 1.5, a value of 0.52681, which | | | | corresponds to a mass transfer effectiveness of 0.8, will be used. | | | | Coil nominal performance data are: | | | | nomVal.m_flow_nominal = 0.646123 | | | | dX_nominal = XEvaOut_nominal-XEvaWetBulOut_nominal = 0.00528111 - 0.00637893 = -0.00109782 | | | | QLat_flow_nominal = -2694 assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | varSpeDX.eva.dX_nominal > 1e-10 assert | warning | *** Warning: In DX coil model, dX_nominal = -0.00109782 | | | | This means that the coil is not dehumidifying air at the nominal conditions. | | | | Check nominal parameters. | | | | Nominal values: | | | | Q_flow_nominal = -8980 | | | | COP_nominal = 3 | | | | m_flow_nominal = 0.646123 | | | | TEvaIn_nominal = 292.55 (= 19.4 degC) | | | | TConIn_nominal = 308.15 (= 35 degC) | | | | phiIn_nominal = 0.5 | | | | tWet = 1400 | | | | gamma = 1.5 | | | | p_nominal = 101325 assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | mulStaDX.eva.nomVal.gamma <= mulStaDX.eva.gammaMax assert | warning | *** Warning: In DX coil model, gamma is too large for these coil conditions. | | | | Instead of gamma = 1.5, a value of 0.52681, which | | | | corresponds to a mass transfer effectiveness of 0.8, will be used. | | | | Coil nominal performance data are: | | | | nomVal.m_flow_nominal = 0.646123 | | | | dX_nominal = XEvaOut_nominal-XEvaWetBulOut_nominal = 0.00528111 - 0.00637893 = -0.00109782 | | | | QLat_flow_nominal = -2694 assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | mulStaDX.eva.dX_nominal > 1e-10 assert | warning | *** Warning: In DX coil model, dX_nominal = -0.00109782 | | | | This means that the coil is not dehumidifying air at the nominal conditions. | | | | Check nominal parameters. | | | | Nominal values: | | | | Q_flow_nominal = -8980 | | | | COP_nominal = 3 | | | | m_flow_nominal = 0.646123 | | | | TEvaIn_nominal = 292.55 (= 19.4 degC) | | | | TConIn_nominal = 308.15 (= 35 degC) | | | | phiIn_nominal = 0.5 | | | | tWet = 1400 | | | | gamma = 1.5 | | | | p_nominal = 101325 assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | sinSpeDX.eva.nomVal.gamma <= sinSpeDX.eva.gammaMax assert | warning | *** Warning: In DX coil model, gamma is too large for these coil conditions. | | | | Instead of gamma = 1.5, a value of 0.52681, which | | | | corresponds to a mass transfer effectiveness of 0.8, will be used. | | | | Coil nominal performance data are: | | | | nomVal.m_flow_nominal = 0.646123 | | | | dX_nominal = XEvaOut_nominal-XEvaWetBulOut_nominal = 0.00528111 - 0.00637893 = -0.00109782 | | | | QLat_flow_nominal = -2694 assert | warning | The following assertion has been violated during initialization at time 15811200.000000 | | | | sinSpeDX.eva.dX_nominal > 1e-10 assert | warning | *** Warning: In DX coil model, dX_nominal = -0.00109782 | | | | This means that the coil is not dehumidifying air at the nominal conditions. | | | | Check nominal parameters. | | | | Nominal values: | | | | Q_flow_nominal = -8980 | | | | COP_nominal = 3 | | | | m_flow_nominal = 0.646123 | | | | TEvaIn_nominal = 292.55 (= 19.4 degC) | | | | TConIn_nominal = 308.15 (= 35 degC) | | | | phiIn_nominal = 0.5 | | | | tWet = 1400 | | | | gamma = 1.5 | | | | p_nominal = 101325 LOG_SUCCESS | info | The initialization finished successfully with 3 homotopy steps. stdout | info | ##IDA## -4 error occurred at time = 16072792.3646766 stdout | info | model terminate | Integrator failed. | Simulation terminated at time 1.60728e+07 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.183266s reading init.xml | | | | | | 0.0127576s reading info.xml | | | | | | 0.000318898s [ 0.0%] pre-initialization | | | | | | 0.0332428s [ 0.2%] initialization | | | | | | 0.0205559s [ 0.1%] steps | | | | | | 3.69029s [ 21.9%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 3.96812s [ 23.5%] event-handling | | | | | | 0.178551s [ 1.1%] overhead | | | | | | 8.99406s [ 53.3%] simulation | | | | | | 16.8851s [100.0%] total | | | | | events | | | | | | 936 state events | | | | | | 0 time events | | | | | solver: ida | | | | | | 86974 steps taken | | | | | | 120069 calls of functionODE | | | | | | 19101 evaluations of jacobian | | | | | | 3415 error test failures | | | | | | 22 convergence test failures | | | | | | 10.0744s time of jacobian evaluation