Use of fuel blend in place traditionally used fossil fuel, significantly reduced carbonated emissions from internal combustion engine. Further reduction such with controlled ‘NOx yield’ is a challenge faced by researchers. Modification muffler geometry an engine while using blended helps temperature and subsequently diminish NOx formation alters CO2 emissions. This paper investigates hybrid met...

Ethanol, produced from biomass, is a renewable fuel that can be an attractive alternative to gasoline for the increasing concerns of energy security and environment. In present work, combustion characteristics ethanol (E100) fueled spark-ignition engine are compared with base fuel, consecutively evaluated cycle-to-cycle variations (CCV) parameters using statistical analysis. These investigation...

In this numerical study, the effects of premixed ratio, intake manifold pressure and air temperature on a four-cylinder, four-stroke, direct injection, low-compression-ratio gasoline engine, operated in reactivity-controlled compression ignition (RCCI) combustion mode at constant engine speed 1000 rpm, were investigated using Converge CFD software. The results analyses showed that maximum in-cy...

In this study, a novel approach for energy-efficient dissolution of gases in liquid is presented, which significantly reduces the compression work. The core one-step process simultaneous operation and absorption. was injected into cylinder filled with gas, while piston compressed mixture during injection time. solubility increases increasing system pressure, so that work gas phase permanently r...

A high performance gas displacement pump based on four individual cylinders was developed. The magnetically-coupled pistons and the hermetically-sealed housings as well special cleanliness in terms of out-gassing radio-purity make cylinder interesting for usage low background experiments dealing with noble gases target. An optimized inner flow path reduced dead volume respect to prototype singl...

In this paper, effects of EHD actuators on hydrodynamic behavior and heat transfer of air flow over a circular cylinder were considered. Pressure and temperature distributions around the cylinder were measured in presence of wire-plate EHD actuators. The Reynolds number based on cylinder diameter (d) were 3500, 7000. Experiments were performed for various configurations. Based on obtained resul...

‎Let $tau$ be a subgroup functor and $H$ a $p$-subgroup of a finite group $G$‎. ‎Let $bar{G}=G/H_{G}$ and $bar{H}=H/H_{G}$‎. ‎We say that $H$ is $Phi$-$tau$-quasinormal in $G$ if for some $S$-quasinormal subgroup $bar{T}$ of $bar{G}$ and some $tau$-subgroup $bar{S}$ of $bar{G}$ contained in $bar{H}$‎, ‎$bar{H}bar{T}$ is $S$-quasinormal in $bar{G}$ and $bar{H}capbar{T}leq bar{S}Phi(bar{H})$‎. ‎I...

In this study, the applicability of nanofiltration (NF) membranes as a pretreatment prior to reverse osmosis (RO) in seawater desalination was investigated. The membranes used wereNF270 and NF90 as the NF membranes, while the brackish water (BW) RO membrane BW30 was used as the RO membrane. In desalination tests, permeates of the NF membraneswere collected and used as the feed to th...