Beyond horsepower: How auxiliary power systems influence fuel burn, emissions & vessel stability
It is hard to have discussions related to vessel performance without bringing up the propulsion system, particularly, its horsepower.
However, as an experienced marine engineer would confirm, the matter does not end there.
For a vessel to run efficiently and effectively, more needs to happen beyond the main engine.
Specifically, there are a lot of auxiliary power systems that continue operating while at sea and contribute to efficient operation and safety, influencing fuel burn, emissions, and vessel stability in some cases.
Although auxiliary systems do not enjoy as much recognition as the main engine, the truth is that their influence on vessel performance cannot be overstated.
Supporting every system onboard
As one would probably guess, auxiliary power systems are mainly focused on generating electricity to help the vessel function properly, including navigation, communication, lighting, heating and ventilation, pumps, cargo handling equipment, as well as safety systems.
Therefore, auxiliary systems operate on a daily basis helping vessels function without noticeable effort.
If all auxiliary systems are working efficiently, vessel performance becomes better.
When they fail, it is another story.
The hidden impact on fuel consumption
Fuel economy is not just about the amount of power that the primary engine is able to deliver. Rather, it also depends on how effectively the energy is created, distributed and used throughout the ship.
Generators that are oversized or run inefficiently because of poor maintenance and load management may be using too much fuel. In the same way, an older, less efficient electrical system and inefficient machinery can require unnecessary strain on the energy-generating system of the ship.
Over time, such minor problems will result in large quantities of additional fuel being consumed.
For those who manage fleets of ships, however, any optimization of the power generation system can bring significant savings.
Efficiency means reduced emissions
With new standards for environmental protection continuously being implemented in the maritime industry, lowering the environmental footprint is becoming increasingly important.
While much discussion is centered around innovations in propulsion systems and alternative fuels, the auxiliary power systems are equally important to the environmental performance of a ship.
Since efficient use of energy means reduced fuel consumption, and reduced fuel consumption leads to decreased environmental footprint, it is possible to achieve environmental goals through optimization of auxiliary systems.
Reliability = Stability
In addition to being efficient and eco-friendly, auxiliary power units also help maintain the stability of the vessel.
Disruption of power supply may influence the operation of crucial equipment, navigating systems, means of communication, loading/unloading processes, and safety mechanisms of the vessel.
Thus, stable and reliable auxiliary power sources play a vital part in difficult operating conditions.
For the crew of the vessel, the availability of reliable auxiliary sources is always of prime importance, since it concerns their lives.
Little steps towards efficient operations
One of the least known facts about ship performance is that improvement happens gradually, through small changes in the way the vessel functions.
Such changes include optimization of generator loading, updating outdated equipment, better power management, and maintenance of electrical systems on board.
The outcome is usually positive, and can be described by:
- Less fuel used
- Less pollution produced
- Longer equipment lifetime
- More reliable operation of the system
- Lower maintenance expenses
- Better vessel performance
These improvements may not be as visible as a new engine installation, but their impact can be felt every day.
How XANTHIS S.A. helps achieve reliable marine power systems
Here at XANTHIS S.A., we are aware of the importance of each part of the power ecosystem of vessels.
For many years now, we have been assisting marine power companies develop reliable power systems, which guarantee safe and uninterrupted operations of their respective vessels. These include auxiliary power generation and electrical distribution systems, backup systems, and technical support services.
Through our experience, we have learned that there has never been a case where performance of a ship has relied on a single component alone. This is why we offer a range of solutions that guarantee reliable operations of an entire ecosystem of systems on board a marine vessel.
