03.07.2017

The Chameleon among HVAC Systems

MACS 8.0

2

A Multi-Platform-Standard

One Design – Multiple Applications

Tram CommuterMetro

Liebherr Transportation Systems has developed a modular air conditioning system which responds to

the most challenging market requirements of the railway industry. The modular architecture allows

flexibility to serve diverse rolling stock applications.

1 module 2 modules 3 modules 4 modules

cooling power kW 8 16 24 32

heating power kW 8 16 24 32

Flexible Configuration

3

One Module – Multiple Combinations

2x2 modules

1x4 modules

4x1 modules

The MACS 8.0 HVAC system enables flexible integration by arranging the modules in accordance with

the individual car design and the required cooling power demand. The module can also be used for

controlling the driver’s cab climate.

Flexible Configuration

4

Easy Integration – Low Height

1 module 2 modules 3 modules 4 modules

length mm 1,000 2,000 3,000 4,000

width mm 1,600

height mm 220

height 220 mm

Meeting Challenging Requirements

5

Low Weight - Higher Cooling Power Density

70% higher

cooling power

densitycompared with existing

HVAC units for LRV,

Metro and Commuter

Rail Lie

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Tram CommuterMetro

Lower Power Consumption

Reduced energy consumption without need of frequency variable power supply on car level.

Average 8% lower power consumption during a typical season cycle.

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V1 V2 V3 V4 V5 V6

heating(OT -5°C)

heating (OT 0°C)

cooling(OT 35°C)

cooling(OT 25°C)

cooling(OT 15°C)

free cooling(OT 10°C)

Meeting Challenging Requirements

6

7

E-Box

Cooling Circuit

MACS 8.0 is a readily developed modular HVAC design that is suitable for different rolling stock platforms

with different cooling power demands. Each module consists of identical standardized components.

Reduced Complexity

Simple Module Architecture

Air Treatment Unit

Reduced Complexity

8

Module Controller

Power Supply

Simple Module Architecture

Reduced Complexity

9

Condensor

Condensor Fans

Compressor

Simple Module Architecture

Reduced Complexity

10

Simple Module Architecture

Fan

Air Flips

Air Filter

Evaporator

Heating Elements

Availibility Secured by Modularity

11

Partial system function can be maintained with one module lost

1x4-module

configuration

4x1-module

configuration

Multiple cycle redundancy ensures maximum availability. The system can continue to partially function

even if one module shuts down. This ensures that unplanned downtime is kept to an absolute

minimum.

Flexible Service Concepts

12

Plug & Play Modules Enable Off Car Repair Concept

replacement of single module

exchange time 30 minutes

easy handling due to low weight

Individual modules can be easily replaced for

“off-car” repair. This optimizes maintenance

schedules and simplifies spare parts inventory

management.

Flexible Spare Part Management

13

Example 1: Total Care Package

corrective and preventive maintenance at Liebherr repair shop

no spare part management by customer

Diverse Service Level Concepts are Possible

Example 2: Care-On-Train Package

corrective maintenance at Liebherr repair shop

preventive maintenance by customer with Liebherr spare part management

Example 3: Liebherr-On-Demand Package

corrective/preventive maintenance at customer repair shop

Liebherr support on demand by spares, training & tools

Liebherr offers customized service concepts to suit the operators

precise needs for the life time of the product.

14

New Product Approach

off-cycle development process

mature HVAC product allows risk

free & quick integration in any new

customer project continuous improvement

regular product upgrades

through efficient life cycle

engineering approach

no obsolescence risk

obsolescence issues will be covered by

the continuous design process

A Constantly Evolving Product

Existing Project Approach

on-time development

frozen design

obsolescence management

on demand

A Mature State of the Art Product at Any Time

MACS 8.0 is being continually developed to maintain the high maturity level of the product design and to

ensure a risk free integration into any new project. Liebherr’s life-cycle engineering approach provides

regular product upgrades and eliminates obsolescence issues.

Cost Efficient DevelopmentD

evelo

pm

ent co

sts

existing project approach

reduced

customer engineering

adaptation to

platform requirements

only

≥ 3 month up to 12 months development time

Customer

Engineering

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Supplier Project Related

Product Development

Approx. 75%

by re-use of

standard design

Up to 70%

basic design is

already available

new product approach

€

The application of MACS 8.0 modules enables the significant reduction of development time and related

costs for each new vehicle integration. This additionally minimizes project and development risks.

Time to Market Reduction

15

Cost Efficient Operation

• “ready to use” products for customers

• extreme standardization (cab=saloon module)

• continuous product upgrades

(e.g. no extra NRCs for fire and smoke upgrades)

development costs

• significantly reduced weightweight related costs

• partial load operation or shut-off of modulespower consumption

• easy spares management

• off-car repair conceptmaintenance

• high availability of system function

• less unscheduled maintenancetrain down-times

less

Total Cost of Ownership is typically 10 % lower than that of a comparable HVAC system.

16

A Future Proofed HVAC Standard

modular CO2 saloon HVAC units are …non-modular CO2 saloon HVAC units are …

small cycle CO2 concept is easy to maintain and safe in operation

Liebherr is developing CO2-cooled modules with identical interfaces. The modular architecture of MACS

8.0 enables a small-cycle CO2 concept, which is easy to maintain and safe in operation.

• easy to maintain

• (off-car/off-site repair concept possible)

• small circuit CO2 leakage case is

not safety critical

• hardly to maintain

• unsafe to operate in case of

CO2 leakage

CO2easy modification to CO2 refrigerants

17

MACS 8.0 enables CO2 Air Conditioning on your vehicle