GT-SUITE for cooling circuit & engine heat-balance Gamma · GT-SUITE for cooling circuit & engine...
Transcript of GT-SUITE for cooling circuit & engine heat-balance Gamma · GT-SUITE for cooling circuit & engine...
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
GT�SUITE for cooling circuit & engine heat�balanceHans-Carsten Göttsche-Götze
GT-SUITE for cooling circuit &
engine heat"balance225.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Deutz Applications for Diesel engines
AGRI PowerConstruction machines
Generator sets Automotive
GT-SUITE for cooling circuit &
engine heat"balance325.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Engine spec with key components from customer
GT-SUITE for cooling circuit &
engine heat"balance425.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Use of GT Suite MP
Cooling system development
Customer data to Deutz
Engine spec
Vehicle package
Operation limits
Deutz Cooling Team
Heat rejection, Cooler
size, coolant flow
Thermostat setting
System configuration
Cooling components
Diameters, Roughness
Maps of pump, hx, Fan
Thermostat valve curve
Pressure losses
Data to Customer
Heat Rejection
Coolant flow
Charge Air flow
GT-SUITE for cooling circuit &
engine heat"balance525.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Development structure
Hx temperature difference
Required coolant flow
First engine heat balance
First model w/o hxw/o pump map
pressure level, losses, flow distribution
Experience
GT-SUITE for cooling circuit &
engine heat"balance625.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Engine coolant circuit
Thermostat
p
p
p
p
p
Measurement required p flow
∆p
∆p
∆p
∆p
∆p
flow
flow
flow
∆p
p
EGR
Oil
Radiator
Measure requirements for coolant system calculation
Known ∆p, flow
GT-SUITE for cooling circuit &
engine heat"balance725.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Development structure
Hx temperature difference
Required coolant flow
First engine heat balance
First model w/o hxw/o pump map
pressure level, losses, flow distribution
Pump map and more detailed model
CFD calculations
testing resultsInteraction with testing
Experience
GT-SUITE for cooling circuit &
engine heat"balance825.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
CFD of difficult geometries
Result: pressure resistance
GT-SUITE for cooling circuit &
engine heat"balance925.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Example: full circuit w/o heat exchangers
Result: pump performance
coolant flow distribution
Engine block
Oil
EGR
Pump
Thermostat
GT-SUITE for cooling circuit &
engine heat"balance1025.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Development structure
Hx temperature difference
Required coolant flow
First engine heat balance
First model w/o hxw/o pump map
pressure level, losses, flow distribution
Pump map and more detailed model
CFD calculations
testing resultsInteraction with testing
Experience
Circuit with HX: Oil, EGR, coolant, CACEngine test results
Confirmation of heat rejection and system performance
GT-SUITE for cooling circuit &
engine heat"balance1125.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Heat Balance Schematic
OilQ Coolant
Fuel
Exhaust
after Turbine
Radiation
Convection
EGR
Power
Q CACFriction
Convection
Coolant
GT-SUITE for cooling circuit &
engine heat"balance1225.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Heat balance calc for full circuit
Principle:
Q_fuel = Power + Q_Exhaust + Q_Coolant + Q_CAC + Q_amb= BSFC x Power x Fuel Heat/3600000
Q_Exhaust = f( heat cap Exh, mass flow, Temperature after Turbine )
Q_CAC = f( heat cap Air, mass flow, Temperature after compressor )
Q_amb ~ 4%Q_fuel
Q_Coolant = Q_Engine + Q_oil + Q_EGR
Q_EGR = f( heat cap Exh_EGR, mass flow, Temp diff over EGR cooler)
EGR mass flow = f( EGR rate, air mass flow )
Q_Oil = f( heat cap, mass flow, Temp diff over oil cooler)
GT-SUITE for cooling circuit &
engine heat"balance1325.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Measure requirements for heat balance
Measurement required Τ flow
RA
D
EG
R
CAC
Τ
flowΤ
BSFC
Τ
T oil sumpΤ
flow
Condition with and w/o EGR
Vol eff 0 Vol eff
GT-SUITE for cooling circuit &
engine heat"balance1425.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Calculation of heat rejection with GT controls
6 value maps out of
measures
4 condition values
out of case setup
Result out:
Q_Coolant
Q_CAC
EGR rate
Maped Values XYZ points
GT-SUITE for cooling circuit &
engine heat"balance1525.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Map generation with XYZ points
Example: charge air flow over speed and BMEP
23.00
20.00
15.00
10.00
1.80
5.00
1100 1250 1500 1750 2000 2200
GT-SUITE for cooling circuit &
engine heat"balance1625.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Full cycle with heat exchangers
Result: Coolant flow
Temperature distribution
System behavior
Oil cicuit, EGR flow, CAC flow, Cooling Air flow
GT-SUITE for cooling circuit &
engine heat"balance1725.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Full cycle with heat exchangersDetail: Oil module
GT-SUITE for cooling circuit &
engine heat"balance1825.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Full cycle with heat exchangersDetail: Cooling pack
Air side of water circuit
Cooling air
Charge air
Coolant
GT-SUITE for cooling circuit &
engine heat"balance1925.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Development structure
Hx temperature difference
Required coolant flow
First engine heat balance
First system w/o hxw/o map pump
pressure level, losses, flow distribution
Pump map and more detailed circuit
CFD calculations
testing resultsInteraction with testing
Experience
Circuit with HX: Oil, EGR, coolant, CACEngine test results
Confirmation of heat rejection and system performance
Circuit with couplingGT Power calculation More detailed heat distribution to oil
GT-SUITE for cooling circuit &
engine heat"balance2025.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Split coupling with GT Power: model 4cyl-2V
Block HeadOilReading Cool AirCoolant CA EGR Control
GT-SUITE for cooling circuit &
engine heat"balance2125.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Result of coupling with GT Power
GT-SUITE for cooling circuit &
engine heat"balance2225.11.2009
Deutz AG, Thermal&Fluid Engineering, TE-TT
Hans-Carsten Göttsche-Götze
Use of GT Suite MP
Cooling system deveopment
Customer data to Deutz
Engine spec
Vehicle package
Operation limits
Deutz Cooling
Heat rejection
Hx size, ATB, coolant flow
Thermostat setting
System configuration
Cooling components
Diameters, Roughness
Maps of pump, hx, Fan
Thermostat valve curve
Pressure losses
Data to Customer
Heat Rejection
Coolant flow
Charge Air flow