Transport Case Studies

Aerodynamic add-on kit for semitrailers

Truck
© KRONE
Truck
Measures

  • Installation of an aerodynamic add-on kit consisting of side trim and underride protection
  • additional side curtain with pneumatic central locking


Energy Saving

This measure cuts fuel consumption by between 5 and 7%. At the same time, the time needed for opening and closing drops by 70%. Given an annual distance travelled of 120,000 km and a diesel price of €1.32, the cost of an add-on kit is recouped after a year.

Use of braking energy to start moving or accelerate. Also, the energy can be used to bridge passages without trolley lines.

Train
© Bombardier
Train
Measures

Use of a braking energy storage system on the trams in Mannheim. Doublelayer capacitors ("UltraCaps") are used to store the energy.

Energy Savings

Depending on the vehicle type, the energy costs for trams amount to an average of €30,000 per year and vehicle. The system to utilise braking energy can cut energy consumption by up to 30%. Only 60% of the energy otherwise needed to start the tram moving is required. The other 40% come from the on-board energy storage facility - a saving of 25%. On top of this there is another 5% saved due to the reduced energy take-up from the grid, which also reduces the losses in the trolley lines.

The "Futura Carrier" is a new type of modular construction vessel for inland and coastal waters which adapts flexibly to existing waterways.

Futura Carrier
© New Logistics
Futura Carrier
Measure

This type of vessel is a modular system. It has a radically new hull design, four redundant steerable propeller drives - two forward and two at the stern - and what is easily the most efficient automatic control system for inland waterway vessels at present.

Energy Savings

Compared with an inland waterway vessel with a traditional hull design and drive solely at the stern, this vessel offers extremely high manoeuvrability and operational reliability. Further developments on the basis of the first four vessels in operation indicate efficiency and cost advantages of at least 20%. Hydrodynamic tests with models in a towing tank have confirmed these figures.

Use of skysails on new vessels or retrofitted to existing vessels

SkySails
© SkySails
SkySails
Measure

Installation of a skysail which utilises the strong and constant winds and the reduced friction at a height of 150 - 300 m above sea level, thereby helping to drive the ship forwards.

Energy Savings

Assuming 210 days at sea per year, fuel costs of a 160 m tanker amount to approx. €2.5 m. The use of a skysail system saves fuel worth roughly €460,000. The investment is amortised in 3.9 years.

Weight reduction of the A350 by using carbon-fibre reinforced composites (CFRP)

Airbus
© Airbus
Airbus
Measures

  • 53% of the airframe of the new widebodied jet is made of composite materials, and is thus highly weight-efficient.
  • The innovative CFRP-based fuselage concept reduces weight by means of optimal adaptation of the fibre layers and skin thickness.
  • Furthermore, the A350 XWB has benefited from aerodynamic improvements and new consumption-optimised engines.


Energy Savings

The innovative CFRP-based technologies help to ensure that the A350 XWB consumes 25% less fuel per seat.

Installation of an electronic traffic guidance system in the Nuremburg metropolitan region which can process dynamic commuter flows, holiday dates, events and the use of local public transport.

City Nuremberg
© City Nuremberg
City Nuremberg
Measures

Equipping of 70 km of autobahns and 33 km of streets in the city with an electronic traffic guidance system. Measurement points and cameras provide data on each lane and register disruption. All the data are processed centrally by an overriding computer which monitors the entire system including traffic lights and which works from past experience. Route control systems, variable traffic signs, speed indicators and a dynamic car park guidance system are all used. Predefined "scenarios" are used to guide the traffic onto certain routes, and traffic lights are adapted to the respective situation.

Energy Savings

Purchasing such a system is mainly worthwhile for larger conurbations like the Nuremberg metropolitan region, with around 560,000 vehicle movements a day and a catchment area of 2.2 million inhabitants, since the software alone cost €1.6 m. The traffic flow has benefited greatly from the introduction of the electronic traffic guidance system. The number and length of tailbacks - and thus also the energy costs - have dropped correspondingly.

Modernisation of the automatic nine-aisle high bay warehouse of an automotive company with 22,000 storage spaces and nearly 4,000 movements in and out per day.

Eurodrive
© Eurodrive
Eurodrive
Measures

Gradual conversion of the storage facility during operations to the latest mechanical, electrical and control solutions, e.g. via the introduction of a system to capture braking energy. Also, the stacker cranes only move as fast as is required by the current job situation.

The most frequently required types of goods are now stored in the spaces which are closest to the point of need.

Energy Savings

The throughput in the storage facility rose by 50% from 4,000 to 6,000 movements in and out. The energy conservation measures saved 118,500 kWh per year, equivalent to the electricity needs of roughly 30 4-person households. At current German electricity prices, this saving amounts to around €25,000 per year.

Geothermal heating of points which uses a heat pump to obtain geothermal heat as required, enabling smooth usage in winter and reducing maintenance requirements.

Geothermal heating
© Pintsch Aben
Geothermal heating
Measures

Replacement of conventional heating of points based on propane gas or electricity with systems using geothermal energy.

Energy Savings

Experience shows that controlled heating systems for points usually run for about 800 - 900 hours a year. The average power used by an electrical point heating system is 12 kW for a right-hand or left-hand switch. This suggests an average energy requirement of approx. 10,000 kWh a year. When a geothermal heating system is used, the energy required to heat such a switch averages around 2.0 to 2.5 kW, i.e. roughly 1,800 kWh per year, or less than 20% of the amount used by conventional technology. Depending on the local situation, energy savings of up to 80% can be achieved.