We propose a new design for a polymer electrolyte membrane (PEM) fuel-cell stack that can achieve higher fuel utilization without using hydrogen recirculation devices such as hydrogen pumps or ejectors, which consume parasitic power and/or require additional control schemes.
In this study, a novel design for a polymer electrolyte membrane (PEM) fuel-cell stack was presented which could achieve higher fuel utilization without using hydrogen and oxygen recirculation devices such as hydrogen pumps or ejectors that consume parasitic power and require additional control schemes.
To investigate the bed structure in the reactor, the Pebble Recirculation Experiment Device (PRED) and the Pebble Bed Dense Experiment facility (PBDE), which were mock-ups for TMSR-SF (Thorium-based Molten Salt Reactor with Solid Fuel) were developed.
Results are shown to support the assumption of finite Debye length and expected to be helpful in controlling the vorticity and recirculation in the relevant microfluidic devices.
Moreover, the equivalence of both devices in clinical routine was questioned, as chemical stabilizers added to albumin solutions may reduce performance, especially during SPAD, while they are partially removed by recirculation and purification in the MARS device [ 10, 11].
Therefore modern engines feature complex architecture and embed new devices for exhaust gas recirculation (LP-HP EGR), turbocharging (e.g. multi-stage compressors), gas after-treatment (e.g. DPF, SCR, LNT) and fuel injection.
Therefore modern engines feature complex architecture and embed new devices for exhaust gas recirculation (EGR), turbocharging (e.g. multi-stage compressors), gas after-treatment (e.g. selective catalyst reduction (SCR)) and fuel injection (either high or low pressure).
However, our monitoring devices were implanted when cerebral recirculation already occurred.
The bioactive HFMs were then potted in a model gas exchange device (0.0084 m2) and tested in a recirculation loop with a CO2 inlet of 50 mmHg under steady blood flow.
The method was developed for the prediction of hemolysis in prosthetic devices, where the flow may include recirculation zones.
