نتایج جستجو برای: zero emission
تعداد نتایج: 325457 فیلتر نتایج به سال:
Electrical and wind propulsion, together with energy stored in batteries renewable energies harnessed onboard, can lead the way towards zero-emission ships. This study compares propulsion solutions battery storage possibilities for a RoRo ship operating Baltic Sea. The systems simulation model ShipCLEAN is used to predict performance of real-life conditions. showcases how ships be transferred f...
This paper presents a simulation tool for marine hybrid power-plants equipped with polymer exchange membrane fuel cells and batteries. The virtual model, through the combination of operational data dynamically modelled subsystems, can simulate different sizes configurations, in order to analyze response energy management strategies. model aims replicate realistic behavior components included ve...
Assessing greenhouse gas (GHG) emissions produced from electric vehicles (EVs) and hydrogen (HVs) requires understanding of the carbon intensity electricity generation. Without decarbonisation generation, environmental benefits low emission (LEVs) will be diminished. The UK aims to produce net zero by phasing out banning sale new conventionally fuelled (CFVs) 2035 in favour LEVs. A comparison U...
Implementing environmentally friendly fuels and high efficiency propulsion technologies to replace the Internal Combustion Engine (ICE) fueled by fossil such as Heavy Fuel Oil (HFO) Marine Gas (MGO) on board ships represents an attractive solution for maritime power. In this context, fuel cells can play a crucial role, thanks their energy ultra-low zero criteria pollutant emissions environmenta...
Stimulated emission is the process fundamental to laser operation, thereby producing coherent photon output. Despite negatively charged nitrogen-vacancy (NV-) centres being discussed as a potential laser medium since the 1980s, there have been no definitive observations of stimulated emission from ensembles of NV- to date. Here we show both theoretical and experimental evidence for stimulated e...
یکی از موارد مهم در طراحی راکتور های هسته ای، لحاظ کردن فاکتور های ایمنی در آنها می باشد. از جمله مهمترین این فاکتورها، کنترل توان راکتور و خاموش سازی آن در هنگام وقوع حادثه است که میله های کنترل نقش بسیار موثری در این زمینه دارند. باتوجه به پیشرفت روز به روز کدها ی هسته ای، استفاده از کد mcnp به عنوان یک کد پیشرفته باعث هر چه واقعی تر شدن نتایج حاصل از شیبه سازی می شود. در این تحقیق اطلاعات لا...
Coherent terahertz (THz) emission from the vacuum-plasma interface induced through laser wake-field excitation has been investigated by particle-in-cell simulations. The emission frequency appears around tau(-1)(L), where tau(L) is the laser pulse duration, even though the plasma density is distributed inhomogeneously near the interface. The emission amplitude, which is zero on the propagation ...
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