Abstract: A system for filtering particles within a multiphase fluid that comprises a particulate phase is disclosed. The system comprises a first plurality of substantially parallel, substantially planar thin slabs separated by a predetermined distance to retain particles having a maximum cross-sectional dimension greater than the predetermined distance, and provides at least one flow path for at least part of the multiphase fluid. In one application, the system is used in connection with an electrochemical power source and components thereof, wherein the multiphase fluid comprises flowable fuel.

Abstract: Methods of and systems for filtering particles, whose largest cross-sectional dimension is greater than a predetermined distance, of a multiphase fluid that comprises a particulate phase are provided. The methods provide for a step for delivering the multiphase flowable fuel through filter means, wherein the filter means is for retaining particles of the particulate phase whose largest cross-sectional dimension is greater than a predetermined distance. The systems provide for means for retaining particles whose largest cross-sectional dimension is greater than a predetermined distance, and means for providing at least one flow path for at least part of the multiphase fluid. In one application, the methods and systems are used in connection with an electrochemical power source and components thereof.