modelSFR_PHS

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Extends from BaseClasses.Record_Data.

Information

Parameters

TypeNameDefaultDescription
IntegernShield126
IntegernReflector180
IntegernOuterCore42
IntegernInnerCore30
IntegernPrimarCR6
IntegernSecondaryCR3
IntegernTestLoop4
SI.Lengthpitch_subassembly0.12Subassembly pitch
SI.Lengthth_duct0.003Subassembly duct thickness
SI.Lengthgap_subassembly0.003Gap between subassemblies
SI.Lengthwidth_duct_insidepitch_subassembly - 2*th_duct - gap_subassemblySubassembly duct inside flat-to-flat. Default 0.111
IntegernPins_perSub271# pins per subassembly
SI.LengthD_pin0.0053Pin diameter
SI.Lengthth_clad0.00037Cladding thickness
SI.LengthD_wireWrap0.00126Wire wrap diameter
Units.NonDimPD_ratio1.248Pin pitch to diameter ratio p/d
SI.Lengthlength_subassembly_out0.60Length of subassembly above gas plenum region
SI.Lengthlength_subassembly_gasplenum1.50Length of subassembly gas plenum length after active region
SI.Lengthlength_subassembly_active0.80Length of subassembly active core
SI.Lengthlength_subassembly_shielding0.95Length of subassembly shielding before active region
SI.Lengthlength_subassembly_in0.32Length of subassembly before shielding
SI.Lengthlength_inlength_subassembly_shielding + length_subassembly_in
SI.Lengthlength_outlength_subassembly_out + length_subassembly_gasplenum
SI.Lengthlength_totallength_in + length_subassembly_active + length_out
SI.Pressurep_start1e5
SI.TemperatureT_start_hotT_IHX_inletPHTS
SI.TemperatureT_start_coldT_IHX_oultetPHTS
SI.MassFlowRatem_flow_startm_flow_PHTS
SI.SpecificEnthalpyh_start_hotMedium_primary.specificEnthalpy_pT(p_start, T_start_hot)
SI.SpecificEnthalpyh_start_IHTS_coldMedium_primary.specificEnthalpy_pT(p_start, T_IHX_inletIHTS)
Real[4]R_m_flows{0.5, 0.3, 0.1, 0.1}Fraction of total flow per assembly type
SI.MassFlowRatem_flow_outerR_m_flows[1]*m_flow_PHTS
SI.MassFlowRatem_flow_innerR_m_flows[2]*m_flow_PHTS
SI.MassFlowRatem_flow_reflectorR_m_flows[3]*m_flow_PHTS
SI.MassFlowRatem_flow_shieldR_m_flows[4]*m_flow_PHTS
SIadd.TempFeedbackCoeffalpha_outer0.5*(0.0011 + 0.0013)
SIadd.TempFeedbackCoeffalpha_inner0.5*(0.0034 + 0.0037)
SI.PowerQth_nominal300e6Nominal thermal power
Units.NonDimQ_outer_nominal0.6*Qth_nominalNominal power in region
Units.NonDimQ_inner_nominal0.4*Qth_nominalNominal power in region
SI.MassFlowRatem_flow_PHTS1570Sodium flow rate in PHTS
SI.MassFlowRatem_flow_IHX_PHTSm_flow_PHTS/nIHXsSodium flow rate per IHX on PHTS side
SI.MassFlowRatem_flow_IHX_IHTSm_flow_PHTS/nIHXsSodium flow rate per IHX on IHTS side
SI.TemperatureT_IHX_inletPHTSTRANSFORM.Units.Conversions.Functions.Temperature_K.from_degC(510)PHTS side inlet temperature to IHX
SI.TemperatureT_IHX_oultetPHTSTRANSFORM.Units.Conversions.Functions.Temperature_K.from_degC(360)PHTS side outlet temperature to IHX
SI.TemperatureT_IHX_inletIHTSTRANSFORM.Units.Conversions.Functions.Temperature_K.from_degC(334)IHTS side inlet temperature to IHX
SI.TemperatureT_IHX_outletIHTSTRANSFORM.Units.Conversions.Functions.Temperature_K.from_degC(483)IHTS side outlet temperature to IHX
SI.PressureDifferencedp_IHX_shell16805Shell (primary) side pressure drop
SI.PressureDifferencedp_IHX_tube39250Tube (secondary) side pressure drop
SI.Lengtha_innerwidth_duct_inside/sqrt(3)Inner length of hexagonol subassembly duct
SI.AreacrossArea_duct_empty0.5*3*sqrt(3)*a_inner^2Empty duct cross sectional flow area
SI.AreacrossArea_pin0.25*Modelica.Constants.pi*D_pin^2Cross sectional area of pin
SI.AreacrossArea_pinscrossArea_pin*nPins_perSubTotal cross sectional area of pins
SI.AreacrossArea_ductcrossArea_duct_empty - crossArea_pinsCross sectional flow area of duct
SI.AreacrossArea_pinflowcrossArea_duct/nPins_perSubCross sectional flow area per pin
IntegernPumps3# of pumps in PHTS
IntegernPumpDowncomers2# of downcomer pipes per pump
SI.LengthD_pumpDowncomer12*0.0254Pump downcomer pipes
SI.Lengthlength_pumpDowncomer6Downcomer length rough estimate from drawings
SI.Lengthheight_primaryVessel14.67
SI.LengthD_inner_primaryVessel9.91
SI.LengthD_inner_guardVessel10.42
SI.LengthD_outer_guardVessel10.93
SI.TemperatureT_ambientGround293.15Ambient ground temperature around primary guard vessel
Realfrac_emptytopprimaryVessel0.5Fraction of primary vessel cross sectional area empty above core region
SI.Lengthth_primaryVessel0.5*(D_inner_guardVessel - D_inner_primaryVessel)
SI.Lengthth_guardVesselth_primaryVessel
SI.Lengthlevel_coldNa11.23 - th_primaryVessel
SI.Lengthlevel_hotNa13.46 - th_primaryVessel
SI.AreacrossArea_topprimaryVesselfrac_emptytopprimaryVessel*0.25*pi*D_inner_primaryVessel^2
SI.Lengthheight_topprimaryVesselheight_primaryVessel - 5
SI.Lengthlevel_start_topcoldlevel_coldNa - 5
SI.Lengthlevel_start_tophotlevel_hotNa - 5
SI.Lengthdlevel_startlevel_start_tophot - level_start_topcold
SI.AreacrossArea_upperplenum5^2*pi/4 + pi/8*(crossArea_topprimaryVessel^2 - 5^2)rough estimate based on drawing
SI.Lengthheight_upperplenum3.5distance from core exit to midpoint of IHX inlet
SI.AreacrossArea_expansionVolumecrossArea_topprimaryVessel
SI.Lengthlevel_start_cold_expanstionTanklevel_start_topcold - height_upperplenum
SI.Lengthlevel_start_hot_expanstionTanklevel_hotNa - height_upperplenum
SI.AreacrossArea_bottomprimaryVessel0.25*pi*D_inner_primaryVessel^2 - 0.25*pi*5^2
SI.Lengthheight_bottomprimaryVessel5
SI.Lengthlength_Vessellevel_hotNaRough estimate of transfer area to primary and guard vessel
SI.LengthD_lower4.5Approximate diameter of lower entry plenum for fuel
RealVfrac0.75
SI.Lengthth_redan0.05Thickness of REDAN - guess
IntegernIHXs3Number of IHXs
SI.LengthD_tube_outer0.0159Tube outer diameter
SI.Lengthth_tubewall0.889e-3Tube wall thickness
SI.LengthD_tube_innerD_tube_outer - 2*th_tubewall
SI.Lengthpitch_tube0.025Tube pitch
SI.Lengthlength_tube4.03tube length
IntegernTubes2248Number of tubes
SI.Lengthth_tubesheet0.137Tube sheet thickness
SI.Lengthheight_shell5.32Shell height
SI.LengthD_shell_outer1.41Shell outer diameter 1.41/1.50
SI.Lengthth_shellwall0.01905Shell wall thickness
SI.AreasurfaceAreaModelica.Constants.pi*D_tube_outer*length_tube*nTubesHeat transfer area. Should = 466.5
SI.PowerQth_nominal_IHXsQth_nominal/nIHXsNominal design capacity per IHX
SI.LengthD_downcomerIHX0.36downcomer diameter
SI.LengthD_riserIHX0.5ihx riser diameter
SI.LengthD_pipes_IHTStofromHXs12*0.0254Pipe diameters to and from HXs in IHTS
SI.Lengthlength_pipes_IHTStofromHXs30Pipe diameters to and from HXs in IHTS
IntegernAirHXs3Number of air HXs per bank
SI.LengthD_tube_outer_AHXD_tube_inner_AHX + 2*th_tubewall_AHX
SI.Lengthth_tubewall_AHX0.889e-3Tube wall thickness
SI.LengthD_tube_inner_AHXsqrt(nTubes*D_tube_inner^2/(nTubes_AHX*nAirHXs))/2Velocity is 4x IHX pipe velocity
SI.Lengthpitch_tube_AHX0.0572Tube pitch - in paper
SI.Lengthlength_tube_AHX9.9tube length - in paper
IntegernTubes_AHX66Number of tubes - in paper
IntegernPasses_AHX4Number of tube passes - in paper
SI.Lengthheight_active_shell_AHXpitch_tube_AHX*11*nPasses_AHXShell height
SI.LengthD_shell_outer_AHXsqrt(4/pi*(pitch_tube_AHX*6)*(length_tube_AHX/nPasses_AHX))Shell outer diameter 1.41/1.50
SI.PowerQth_nominal_IHXs_AHXQth_nominal/nIHXs/nAirHXsNominal design capacity per IHX
SI.Lengthth_fins0.001
SI.Lengthpitch_fins0.004
SI.LengthD_finspitch_tube_AHX*0.5Fin diameter
SI.AreasurfaceArea_perfin_perTube0.25*(D_fins - D_tube_outer_AHX)^2*pi*2 + pi*D_fins*th_finstwo sides of each fin and edge
RealnFins_perTubefloor(length_tube_AHX/pitch_fins)two sides of each fin
SI.AreasurfaceArea_tube_perTubepi*D_tube_outer_AHX*length_tube_AHX - pi*D_tube_outer_AHX*th_fins*nFins_perTube
SI.AreasurfaceArea_fins_perTubesurfaceArea_perfin_perTube*nFins_perTube
SI.AreasurfaceArea_finnedTube(surfaceArea_fins_perTube + surfaceArea_tube_perTube)*nTubes_AHX
SI.PowerQth_nominal_DRACS750e3Nominal capacity per hx
SI.AreasurfaceArea_DRACS12.5
SI.MassFlowRatem_flow_DRACS3.921
SI.MassFlowRatem_flow_DRACSsec5.47
SI.TemperatureT_inlet_DRACST_IHX_inletPHTS
SI.TemperatureT_outlet_DRACST_IHX_oultetPHTS
SI.TemperatureT_inlet_DRACSsec327 + 273.15
SI.TemperatureT_outlet_DRACSsec483 + 273.15
SI.LengthD_tube_outerDRACS0.0222
SI.Lengthth_tubewallDRACS0.0009
SI.LengthD_tube_innerDRACSD_tube_outerDRACS - 2*th_tubewallDRACS
SI.Lengthpitch_tubeDRACS0.0379
SI.Lengthlength_tubeDRACS2.489
SI.Lengthlength_shellDRACSlength_tubeDRACS
RealnTubes_DRACS72
SI.LengthD_shell_outerDRACS0.4
SI.Lengthth_shellDRACS0.009525
SI.LengthD_shell_innerDRACSD_shell_outerDRACS - 2*th_shellDRACS
SI.LengthD_pipes_tofromHXs_DRACSsqrt(4/pi*m_flow_DRACSsec/2/863)Pipe diameters to and from HXs in IHTS
SI.Lengthlength_pipes_tofromHXs_DRACS30Pipe lengths to and from HXs in IHTS
SI.LengthD_tube_outer_ADHXD_tube_outerDRACS
SI.Lengthth_tubewall_ADHXth_tubewallDRACSTube wall thickness
SI.LengthD_tube_inner_ADHXD_tube_innerDRACS
SI.Lengthpitch_tube_ADHX4*pitch_tubeDRACSTube pitch
SI.Lengthlength_tube_ADHX10tube length
RealnTubes_ADHXnTubes_DRACSNumber of tubes
IntegernPasses_ADHX2Number of tube passes - up then down
SI.Lengthheight_active_shell_ADHX0.5*length_tube_ADHXShell height
SI.LengthD_shell_outer_ADHXsqrt(4/pi*(pitch_tube_ADHX*6)*(length_tube_ADHX/nPasses_ADHX))Shell outer diameter 1.41/1.50
SI.Lengthth_fins_ADHX0.001
SI.Lengthpitch_fins_ADHX0.004
SI.LengthD_fins_ADHXpitch_tube_ADHX*0.5Fin diameter
SI.AreasurfaceArea_perfin_perTube_ADHX0.25*(D_fins_ADHX - D_tube_outer_ADHX)^2*pi*2 + pi*D_fins_ADHX*th_fins_ADHXtwo sides of each fin and edge
RealnFins_perTube_ADHXfloor(length_tube_ADHX/pitch_fins_ADHX)two sides of each fin
SI.AreasurfaceArea_tube_perTube_ADHXpi*D_tube_outer_ADHX*length_tube_ADHX - pi*D_tube_outer_ADHX*th_fins_ADHX*nFins_perTube_ADHX
SI.AreasurfaceArea_fins_perTube_ADHXsurfaceArea_perfin_perTube_ADHX*nFins_perTube_ADHX
SI.AreasurfaceArea_finnedTube_ADHX(surfaceArea_fins_perTube_ADHX + surfaceArea_tube_perTube_ADHX)*nTubes_ADHX

Contents

NameDescription
Medium_primary