On the Madison Symmetric Torus magnetic fusion plasma experiment, frozen pellet injection is an established method of depositing deuterium fuel into the core of the plasma. To freeze deuterium gas into pellets, the injector is cooled to 10 K with a cryogenic helium refrigerator. To exhaust residual frozen deuterium following injection of each pellet, the injector is warmed by resistive heating ...

The MRA platform is one of the offshore platforms located in north Java Sea. has 4 production wells, namely MRA-2ST, MRA-4ST, MRA-5, and MRA-6 wells. wells are produced using an artificial lift form a gas lift. limited at Platform 3.1 MMSCFD makes not optimal because experiencing insufficient Optimization injection obtained by redistribution for each. results analysis this study indicate that o...

The cycles of the steam-injection gas-turbine systems are studied. The analyses of the parametric effects and the optimal operating conditions for the steam-injection gas-turbine (STIG) system and the regenerative steam-injection gas-turbine (RSTIG) system are investigated to ensure the maximum performance. Using the analytic model, the performance parameters of the system such as thermal effic...

A vast majority of the medium and high speed Diesel engines are equipped with multi-hole injection nozzles nowadays. Inaccuracies in workmanship and changing hydraulic conditions in the nozzles result in differences in injection rates between individual injection nozzle holes. The new deformational measuring method described in the paper allows injection rate measurement in each injection nozzl...

The aerodynamic heating environment with ablation injection and the mass loss rate of the ablator under the superorbital re-entry condition of the MUSES-C sample return capsule are numerically studied by solving the viscous shockIayer (VSL) equations with the nonequilibrium chemistry of both the air and the ablation gas. The boundary conditions at the ablator surface are formulated by consideri...

Abstract Conventional hydraulic fracturing techniques are often found problematic for extracting geothermal energy in hot dry rock (HDR). As an alternative, employing the less viscous gas to replace water as fluid showed great potential more effective of HDR. In this work, failure behavior and mechanism granite during under different confining pressures injection rates comprehensively examined....

This study investigated the effects of high exhaust gas recirculation (EGR) rates on dimethyl ether (DME) fuel combustion performance, exhaust emissions and particle emission characteristics in a small direct injection diesel engine under various injection timings. To examine the effect of EGR and injection timings, the experiment was performed under high EGR rates (0%, 30%, 50%) and injection ...

Abstract Intensifying hydrogen use in the blast furnace is a key technology for significant coke and CO 2 emissions reductions. The most straightforward approach implementation of high hydrogenous gas injection rates BF tuyeres. Yet this solution has not been widely implemented due to lack understanding impact on furnace’s internal state. In paper, newly developed mathematical model presented v...

The isochronous cyclotrons U-400M and U-400 [1] have been equipped with ECR ion sources provided with axial injection systems. They were located atop the cyclotron magnets [2,3]. This paper presents a model for calculating the pressure distribution and the beam losses due to the charge exchange with the residual gasses in the axial injection system. The result of the calculations made are compa...