With adequate turbulence (rotary shaker), pressure measurements and dissolved O2 concentrations generally agreed during lights on/off cycles, but O2 measurements provided more detail.
This study provides comprehensive understanding of the influence mechanism of rotary speed, pressure and working gas in the view of heat/power losses for Stirling engine performance, and recommends that more work (e.g., mechanisms of heat and power losses and PV diagrams) should be performed to improve the precision of second-order models.
Based on previous tests and preliminary calibrations, 50 RPM, 100 psi and 200 psi were chosen as the rotary speed, back pressure and cell pressure, respectively.
The supported catalysts of Cu/Al2O3 were prepared by an impregnation method with an aqueous solution of copper nitrate, followed by evaporation for drying in a rotary evaporator under pressure reduction at 333 K.
The qualitative and quantitative analysis of the penetrating parameters, indicates the effective thrust force, rotary speed, flushing pressure, penetrating rate, and displacement of the bit fluctuate at ground interfaces.
Then the model is applied to the formation drillability prediction with the parameter of seismic layer velocity, acoustic velocity, formation density, shale content, drilling pressure, rotary speed, hydraulic horsepower, bottom hole differential pressure, rate of penetration and formation depth.
Flow resistance and regenerator heat transfer losses, which increased much more rapidly than seal leakage or shuttle heat losses with the increase in rotary speed and pressure, played an important role and resulted in different performances with the two working gases.
This mixture was three times filtered and then the supernatant was evaporated by employing rotary under reduced pressure at 40 °C.
The extracts were filtrated through Whatman number 1 and combined and this was followed by a concentration using rotary evaporator under pressure that was reduced at 45°C.
US-based Kalsi Engineering Inc reports that it has increased the reliability of extreme high-pressure rotary sealing by improving the extrusion resistance of the force-balancing seals used with its proprietary floating backup rings.
