Energy efficient container moving

The Single Hoist Tandem has been designed to increase port performance with an emphasis on energy reduction Photo: RAM Spreaders The Single Hoist Tandem has been designed to increase port performance with an emphasis on energy reduction Photo: RAM Spreaders
Industry Database

RAM Spreaders is focusing on moving more containers with fewer journeys to help ports reduce their carbon footprint by being more energy efficient.

The Single Hoist Tandem, which is capable of lifting two 40 feet containers or 4x20ft containers, has been designed to increase port performance with an emphasis on energy reduction as key design criteria.

It’s a lightweight single hoist tandem system which uses essentially the same crane design can reduce energy at the port significantly more than other green systems that just shift the source of emissions,” said Cameron Hay, chief sales officer, RAM Spreaders.

“While physics dictates that energy used to move a box can’t change the moving of 100 boxes in 50 crane moves vs. 100 moves will significantly reduce the total energy needed per teu by reducing trolley motions and reducing moment of inertia per move.”

Energy saving

Mr Hay said that the Single Hoist Tandem can save 15% in energy. The example of moving 100 empty containers in 50 moves vs. 100 moves shows how energy consumption can be reduced significantly.

He added that a recent study has shown by comparing the crane’s energy consumption between a single spreader operation and tandem spreader operation; the results are impressive.

The power consumption of a crane is on average 10.7kW when lifting single 20ft containers.  Using a tandem headblock that lifts more containers per lift cycle consumes only 5.1kW of power per teu, as it lifts more containers per lift cycle; saving 5.6kW of power, per container.

So, over the course of a year, a typical 100,000 teu capacity terminal can save 5,600,000 kW of power using a tandem headblock.

Mr Hay said that producing a machine that helps ports and terminals save time, energy and cost, was particularly at the forefront of RAM Spreaders research and development team,with the foresight to meet the demands for future port operations.

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