Abstract
The growing requirements for limiting the negative impact of all modes of transport on the natural environment mean that clean technologies are becoming more and more important. The global trend of e-mobility also applies to sea and inland water transport. This article presents the results of experimental tests carried out on a life-size, parallel diesel-electric hybrid propulsion system. The efficiency of the propulsion system was analysed for two modes of operation (electric and diesel) and for different engine speeds and loads. Analysis of the impact of using a hybrid propulsion system on fuel consumption was carried out on a case study vessel and for six actual journeys. The use of hybrid propulsion in “zero emission” mode enables up to four times higher energy efficiency when compared to a conventional drive, while reducing CO2 emissions and air pollution to zero, as well as a hundred-fold reduction in noise emissions. High flexibility in the operation of such a drive enables the use of intelligent power control technology (smart propulsion). This article shows that the use of hybrid propulsion reduces the negative impact on the environment to a minimum and allows for a significant reduction in the vessel’s operating costs.
Highlights
Maritime transport plays a key role in the globalised world
The measurements were made under various propulsion operating conditions and allowed for the preparation of energy efficiency graphs (Figures 5 and 6)
The results indicate that the use of a hybrid propulsion system in the vessel may, in some cases, be more advantageous than the use of a conventional propulsion
Summary
Most goods are transported by sea and their total mass is currently estimated at 10 billion tonnes per year [1]. It should be noted that transport by sea over longer distances is currently the most economical and, at the same time, most environmentally friendly form of transport. It is generally recognised that ships have higher energy efficiency when compared with other means of transport (Figure 1) [2]. The mass of CO2 emitted during the transport of 1 tonne of cargo over a distance of 1 km was taken to be a measure of energy efficiency, i.e., a measure of carbon dioxide emissions during transport work. Cargo [2]; analysed case of an inland ship with hybrid propulsion and solar modules was added. The has implemented the Energy Efficient Design Index (EEDI) [5,6,7,8] which enforces the introduction of has implemented the Energy
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