The objective of this study is to evaluate the energetic, exergetic, sustainability, economic and environmental performances of a 4-cylinder turbodiesel aviation engine (TdAE) used on unmanned aerial vehicles for the take-off operation mode to assess the system with large aspects. Energy efficiency of …

In this research paper, it was concluded that there still remains a lot of uncertainty in the predicament of when a gas-trip can occur on dual-fuel propelled ships. In a situation on board of the Coral Energy, these gas-trips resulted in the main engine not being able to switch-over to gas-mode again. …

The Nieuw Statendam is equipped with a program called ENIRAM. This program calculates the optimal engine configuration and load expressed in revolutions per minute of the propellers. The issue with this program is that it only looks at the main power plants and does not take the waste heat recovery system …

Within the Flexnode Plus project the long-term degradation characteristics of a proton exchange membrane (PEM) electrolyzer (5.5 kW, AC, 1 Nm3/h H2) and fuel cell (1.0 kW, DC, 0.9 Nm3/h) was experimentally tested. The electrolyzer unit was operated at various loads and pressures for approximately 750 …

The aim of this report is to document the configuration, design and testing of an innovative hybrid electric weed brush to be carried by a Antonio Carraro SP5008 Hydrostaticly articulated multi-purpose maintenance tractor. This project is issued by Hissink Custom Made Machinery, as an graduate assingment …

In the search for low greenhouse gas propulsion, the dual fuel engine provides a solution to use low carbon fuel at diesel-like high efficiency. Also a lower emission of NOx and particles can be achieved by replacing a substantial part of the diesel fuel by for example natural gas. Limitations can be …

This study was conducted to investigate dairy farming practices and gross margin at smallholder dairy farmer level to design a business model for scaling up climate-smart dairy in Ziway-Hawassa milk shed. 80 sample dairy farmers from five districts (which then categorised as urban and peri-urban dairy …

The energy efficiency and sustainability of an anaerobic green gas production pathway was evaluated, taking into account five biomass feedstocks, optimization of the green gas production pathway, replacement of current waste management pathways by mitigation, and transport of the feedstocks. Sustainability …

This study aims to evaluate the effect in the energy network of a big shared of decarbonise vehicles (NGV and EV) based on car-use profiles of current conventional and electric vehicles in the city of Groningen. Charging profiles were developed within CBS dataset of mobility and transport, and the electric …

The environmental impact of Synthetic Natural Gas (SNG) production from wood gasification is analysed, focusing on the comparison of two continuous processes (CO2 removal and Fuel-assisted hydrogen addition) to balance the gas mix for the methanation, and their coupling to an intermittent process (Full …