Abstract: A fuel cell power plant (7, 7a) has a stack (8) fed hydrogen-rich fuel gas from a source (14, 14a) with fuel recycle (30, 34) through a compressor (20) of a turbocompressor (19) having a turbine (17, 17a) driven either by high pressure hydrogen (14) or air exhaust (41).

Abstract: A fuel cell power plant (7, 7a) has a stack (8) fed hydrogen-rich fuel gas from a source (14, 14a) with fuel recycle (30, 34) through a compressor (20) of a turbocompressor (19) having a turbine (17, 17a) driven either by high pressure hydrogen (14) or air exhaust (41).

Abstract: A stack of plates (121) (such as fuel cells, electrochemical cells, or enthalpy exchange plates) is surrounded by a sleeve manifold (119) which is shaped to provide manifold chambers (34-39; 146-149; 151-153; 156-158; 161-163; 180-187), and including surfaces (142) for seals (143) to isolate the manifold chambers from each other. Sleeve manifolds (119a, 119b, 119c) may be formed of material of varying thickness, by machining, casting, or extrusion, or may be formed of material (119d) of uniform thickness by bending, casting or extrusion. Sleeve manifolds may be formed of metal, graphite, plastic or reinforced plastic.

Abstract: A stack of plates (121) (such as fuel cells, electrochemical cells, or enthalpy exchange plates) is surrounded by a sleeve manifold (119) which is shaped to provide manifold chambers (34-39; 146-149; 151-153; 156-158; 161-163; 180-187), and including surfaces (142) for seals (143) to isolate the manifold chambers from each other. Sleeve manifolds (119a, 119b, 119c) may be formed of material of varying thickness, by machining, casting, or extrusion, or may be formed of material (119d) of uniform thickness by bending, casting or extrusion. Sleeve manifolds may be formed of metal, graphite, plastic or reinforced plastic.

Abstract: A connector mountable on the surface of a printed circuit board (PCB) has a body of insulating ceramic material having a bottom surface, a main top surface facing away from the bottom surface, additional surfaces interconnecting the bottom and main top surfaces and each other including oppositely facing side surfaces, and an electrical lead having a bottom end portion on the bottom surface, a top end portion on the main top surface and additional portions on the additional surfaces and providing circuit continuity on the exterior of the body between the end portions of the lead, the bottom end portion being affixable to a pad on the surface of the PCB. A mating connector includes two body members of insulating plastic material pivotally connected for limited movement about a hinge pin, each body member having an inwardly facing planar surface, and a spring urging the inwardly facing surfaces toward each other.