Flywheel energy storage has emerged as a viable technology in recent years due to its large instantaneous power and high density. offers an onboard recovery system which is durable, efficient, environmentally friendly. The flywheel the housing surface temperatures can be considerably influenced by friction induced windage losses associated with non-vented airflows air-gap of high-speed rotating flywheel. Many engineering applications have been interested features radial axial flows. flow...

Ammonia utilisation in internal combustion engines has attracted wide interest due to the current trend toward decarbonisation, as ammonia is a zero-carbon fuel with different properties hydrocarbons. The laminar burning velocity (LBV) fundamental property of fuels significant effect on processes and accurate calculations measurements LBV over range blends, pressures flow conditions time-consuming, complicated procedure. main goal study predict NH3/H2/air mixtures using hybrid machine...

Abstract The present work introduces a new technology for converting energy from steps into electricity. It starts with study of the mechanical available in busy corridor. subsequent development efforts and devices are presented, an iterative approach to prototyping. Methods enhancing piezoelectric conversion efficiency have been determined as part process introduced article. Capitalizing on these findings, we fabricated energy‐harvesting stairs that power embedded emergency lighting....

The latest generation of high-pressure common rail equipment now provides diesel engines possibility to apply as many eight separate injection pulses within the engine cycle for reducing emissions and smoothing combustion. With these complicated arrangements, optimizations operating parameters various driving conditions are considerably difficult, particularly when integrating fuel with other such exhaust gas recirculation rate boost pressure together evaluating calibration results....

Amidst the growing demand for efficient and sustainable energy storage solutions, Flywheel Energy Storage Systems (FESSs) have garnered attention their potential to meet modern needs. This study uses Computational Fluid Dynamics (CFD) simulations investigate optimise aerodynamic performance of FESSs. Key parameters such as radius ratio, aspect rotational velocity were analysed understand impact on windage losses heat transfer. reveals critical role Taylor–Couette flow The formation Taylor...

In order to meet the ever more stringent emission standards, significant efforts have been devoted research and development of internal combustion engines. The requirements for efficient responsive diesel engines led introduction implementation multiple injection strategies. However, effects such modes on hydraulic systems, as high-pressure pipes fuel injectors, must be thoroughly examined compensated since formation pollutants in direct-injection are directly influenced by spatial temporal...

In order to meet the ever-more stringent emission standards, significant efforts have been devoted research and development of cleaner internal combustion engines. Diesel formation pollutants are directly influenced by spatial temporal distribution fuel injected. This study investigated effects dwell angle split injection on diesel emissions in a high-speed common rail direct optical engine. The system was characterized through measurement rate quantity for tested strategies test rig....

<div class="section abstract"><div class="htmlview paragraph">During urban driving, a significant amount of energy is lost due to continuous braking, which can be recovered and stored. The flywheel storage system (FESS) efficiently recover store the vehicle's kinetic during deceleration. However, standby losses in FESS, primarily aerodynamic drag, affect its overall efficiency. To address this issue, rotor typically housed dedicated housing maintained at low pressure using vacuum...

Abstract Flywheel energy storage systems (FESSs) have gained significant attention as a promising technology for effective harvesting, and redeployment of energy. This is used particularly in renewable applications where they help manage the intermittency variability output from sources such solar wind by providing quick response, high power density, cycling stability without degradation issues associated with chemical batteries. paper presents comprehensive study on optimisation geometric...

Industrial process plants use emergency shutdown valves (ESDVs) as safety barriers to protect against hazardous events, bringing the plant a safe state when potential danger is detected. These ESDVs are used extensively in offshore oil and gas processing have been mandated design of such systems from national international standards legislation. This paper has actual ESDV operating data four mid/late life production platforms North Sea research operational relationships that interest those...

Abstract Energy storage has recently emerged as a topic of discussion in the context energy transition away from fossil fuels. The flywheel system (FESS) is gaining popularity due to its distinct advantages, which include long life cycles, high power density, and low environmental impact. However, windage loss significantly contributes total losses high-speed rotating machines such flywheel. Windage increases self-discharge, rendering FESS unsuitable for long-term applications. In...