One of the world's most advanced pilot boats contains a hybrid drive from Siemens. Called the Explorer, the vessel is a SWASH (Small Waterplane Area Single Hull) vessel with a torpedo-shaped float located centrally underneath the hull. The boat's propulsion system is also located in this tube.
The vessel remains stable in the water even in rough seas and is relatively light, thus reducing fuel consumption. The hull contains a flexible and compact EcoProp Hybrid system, which ensures efficient and environmentally compatible operation in both the diesel and the electric mode.
The hybrid drive system is economical in all operational profiles. The diesel engine is used to propel the boat. Surplus energy can be used by a generator to supply the vessel with electricity. The boat is currently being tested on the Elbe River.
The Explorer is a further development of SWATH (Small Waterplane Area Twin Hull) craft, which have two torpedo-shaped floats underneath the water. These kinds of vessels are less susceptible to wind and waves than other designs so that pilots can safely go from the boat to the ship they have to direct even in rough seas. In the Explorer, the two lateral floats are replaced by a single tube in the middle.
The boat has two outriggers at the sides to keep it stable. The new design makes the vessel lighter and more agile. Good maneuverability is important because the pilot boat and the ship to be directed have to maintain their relative positions when the pilot is transferring between the two. The speeds can be fairly high, and the large container ships on the Elbe River travel at eight or more knots, for example.
The Explorer's EcoProp Hybrid propulsion system is based on the ELFA drive system that was originally developed for buses. At the heart of the system is an electrical machine that can serve either as a motor or a generator.
When the boat is being propelled by the diesel engine, the latter also supplies energy to the generator. If electric operation is selected, the propeller is instead driven by the electric motor. In this mode, the boat can attain one third of its top speed of 17 knots (approximately 31 kilometers per hour).
The boat's ability to travel a longer distance solely on electricity is important for a number of reasons, including the fact that the centrally located float only contains a single diesel engine. However, some applications require a second propulsion system to be on board for safety reasons. In the Explorer, this role is performed by the electric motor.
ELFA hybrid drives power urban buses in cities all over the world, including London, Munich, and Hanoi. Siemens adapted the components to the special conditions found on the high seas so that the system would be suitable for maritime use and to obtain certification from Germanischer Lloyd SE.
Press Pictures: http://www.siemens.com/ct-pictures/IN20140406
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Stretchable biofuel cells extract energy from sweat to power wearable devices
22.08.2017 | University of California - San Diego
Laser sensor LAH-G1 - optical distance sensors with measurement value display
15.08.2017 | WayCon Positionsmesstechnik GmbH
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
22.08.2017 | Health and Medicine
22.08.2017 | Materials Sciences
22.08.2017 | Life Sciences