technological entries

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Version 15/3/2000 CCD2 - HEATER CORES 1 TECHNOLOGICAL ENTRIES 1990 1992 199 7 2 ROWS MECHANICAL HEATER CORES 4 ROWS HIGH PERFORMANCE MECHANICAL HEATER CORES MECHANICAL HEATER CORE +PPS WATER TANK ALL ALUMINUM HEATER CORE COMPACT ALL ALUMINUM HEATER CORE 200 0 MARKET TREND PERFORMANCE FOR HDi ENGINES, BIGGER CARS. COMPACTNESS HIGH TEMPERATURES (-40°C +180°C) MECHANICAL RESISTANCE RECYCLING

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COMPACT ALL ALUMINUM HEATER CORE. MARKET TREND. 2000. ALL ALUMINUM HEATER CORE. 1997. MECHANICAL HEATER CORE +PPS WATER TANK. 1992. 4 ROWS HIGH PERFORMANCE MECHANICAL HEATER CORES. PERFORMANCE FOR HDi ENGINES, BIGGER CARS. COMPACTNESS - PowerPoint PPT Presentation

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Page 1: TECHNOLOGICAL ENTRIES

Version 15/3/2000 CCD2 - HEATER CORES

1

TECHNOLOGICAL ENTRIES

1990

1992

1997

2 ROWS MECHANICAL HEATER CORES

4 ROWS HIGH PERFORMANCE MECHANICAL HEATER CORES

MECHANICAL HEATER CORE +PPS WATER TANK

ALL ALUMINUM HEATER CORE

COMPACT ALL ALUMINUM HEATER CORE 2000MARKET TREND

PERFORMANCE FOR HDi ENGINES, BIGGER CARS.

COMPACTNESS

HIGH TEMPERATURES (-40°C +180°C)

MECHANICAL RESISTANCE

RECYCLING

Page 2: TECHNOLOGICAL ENTRIES

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2

HEATER CORE COMPONENTS

COMPONENTS PROCESS

MECH. BRAZED MECH. BRAZED

AIR Flat fins Fins Stamping Fin rolls

LIQUID Hair pins Flat tubes Crimping Stamping

JUNCTIONS - - Tubeexpansion

Nocolokbrazing

LIQUIDDISTRIBUTION

Plastic watertank

Aluminumwater tank Molded Stamped

CIRCUITING Crosscounter-flow

Crosscounter-flow - -

TURBULATORS Springs Dimples ThreadForming Stamped

PACKAGING 42mm 42mm /35mm - -

Page 3: TECHNOLOGICAL ENTRIES

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3

CORE COMPOSITION

TubesBended andStamped

End platesCuttedand

stamped

Flat tubes

Stamped

FinsForming

tool

End caps

Stamped

BaffleCuttedand stamped

HeaderStamped

Water tank

StampedSleevesStamped

Page 4: TECHNOLOGICAL ENTRIES

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CIRCUITING

U -flow withreturn tank

Cross - counter flow tube design with design integrated water return

Set up of laminaryboundary layer

Heat transfer in the tubes and not in the tank gain in performance

Air flow

ALL ALUMINUM BRAZED HEATER CORE

Page 5: TECHNOLOGICAL ENTRIES

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5

CIRCUITING

END / END Version SIDE / SIDE Version TOP / TOP

NOT RECOMMENDED

Page 6: TECHNOLOGICAL ENTRIES

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6

Implantation in housing recommendations 1/2

Heater cores positionProximity between electric or electronique components and heater core hot zones should be studied during implantationTo avoid contact between passenger and heater core.To be sure that no condensation projection from evaporator on the heater core create particular odor .The better implantation is described on the following sketch (to avoid degazing problem).

Liquid inlet

AIR

VehicleZ Axis

Liquid oulet

Heater cores positionHeater cores positionProximity between electric or electronic components and heater core hot zones should be avoided No contact between passenger foot and heater core.No condensation projection from evaporator to the heater to prevent particular odor .The best position is described on the following sketch (esp. to avoid degazing problem).

Liquid inlet

AIR

VehicleZ Axis

Liquid outlet

Page 7: TECHNOLOGICAL ENTRIES

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7

Implantation in housing recommendations 2/2

Heater core headerscrewed on housing

Housing form to blockHeater core in housing

Two ribs to maintainHeater core in housing

Red colourHousing

From NVF 10010 specification

Page 8: TECHNOLOGICAL ENTRIES

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CONCLUSIONS

HEATER CORE EVOLUTION GOES TO:Stronger mechanical strengthIncrease of performanceCompactnessStandardisationCost reductions

This evolution was made possible thanks to the all aluminium brazed technology.

Heat exchange architecture is optimised thanks to flat tube patented design

This technology, as plate fins evaporator technology, eases heater core standardisation ;

Branch know how includes a well controlled process able to reach large volumes.