User guide

MKT
Acquisition
Weight
Other cost (direct and indirect
cost of train downtime, spares
management and additional
refrigerant operating cost)
Measured in Germany, Climatic Zone II
Refrigerant Obsolescence
Electrical Consumption
LCC
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
0 1 2 4 10 15 20 25 30
cumulative €
years
The Advanced Air Cycle Concept
Open loop, subpressure concept•
Motorized turbomachine speed-controlled•
Regenerative use of condensate water•
Regenerative use of saloon exhaust air•
Flexible integration with vehicle: •
e.g. roof top, underfloor
Optimised accessibility•
Comparatively lower dimensions and weight•
New design with increased performance •
and efficiency
Based on latest developments •
in the aerospace industry
Considering:
Electrical consumption (as measured in-service •
in long distance trains in Climatic Zone II)
Life Cycle Cost (LCC)•
Obsolescence of refrigerant•
On-board weight carry-on•
Acquisition cost•
Other cost: •
- Train downtime cost due to system failures,
refrigerant leakage, etc.
- Spare management and administration cost
- Additional operating cost due to refrigerant
(leak testing, refrigerant refill/evacuation time)
Low Total Cost of Ownership
Cumulative Life Cycle Cost per Unit
Air Cycle System (left bars) vs. Vapour Cycle System (right bars)
Fresh Air
Example of
Air Cycle Architecture
Filter
Filter
Return Air
Return Air
Fresh Air
Fresh Process Air
Exhaust
Process Air
Heater
Supply Air
Fan
Fan
Supply Air
Heater Heat Exchanger