Abstract: Disclosed herein is a method for producing fluid flow field plates with complex flow field geometries. The method includes locating an electrically conductive sheet on top of another electrically conductive sheet so that they are in intimate contact with each other. The sheets are sealed together, with a manifold opening cut through the sheets. A channel for a fluid is created by kiss cutting through the first sheet so that the channel is in fluid communication with the manifold opening.

Abstract: Disclosed herein is a combined fuel cell and heat exchanger stack assembly. The assembly includes two electrically conductive plates, each plate having two sets of spaced apart fluid openings. The two sets of openings are spaced apart from each other. One or more fluid channels fluidly connect one fluid opening in one set with one fluid opening in the other set. A heat exchanger plate has two sets of spaced apart heat exchanger fluid openings. The two sets of heat exchanger openings are spaced apart from each other. One or more fluid channels fluidly connect one heat exchanger fluid opening in one set with one heat exchanger fluid opening in the second set. The heat exchanger plate is sandwiched between the electrically conductive plates so that the spaced apart fluid openings in the plates and the fluid channels are in fluid communication with each other.

Abstract: A dispensing apparatus for a cryogenic fuel includes a cryogenic compression tank with an amount of liquid hydrogen in it. The liquid hydrogen is held at a first temperature and first pressure. The compression tank has a liquid hydrogen inlet and a gaseous hydrogen outlet. A heater is mounted in the compression tank for heating the liquid hydrogen therein to a second temperature and a second pressure. The second temperature and pressure are higher than the first temperature and pressure so that the liquid hydrogen is converted to gaseous hydrogen. A closable line is connected to the gaseous hydrogen outlet and extends from it. The closable line is in fluid communication with a receiving tank when the line is opened so that the gaseous hydrogen flows from the compression tank to the receiving tank.

Abstract: Disclosed herein is a method for producing fluid flow field plates with complex flow field geometries. The method includes locating an electrically conductive sheet on top of another electrically conductive sheet so that they are in intimate contact with each other. The sheets are sealed together, with a manifold opening cut through the sheets. A channel for a fluid is created by kiss cutting through the first sheet so that the channel is in fluid communication with the manifold opening.

Abstract: Disclosed herein is a plate fin heat exchanger subassembly. The subassembly includes three plates in intimate contact with each other. The first plate is sandwiched between the second and third plates. Each of the plates has a first at least one fluid opening and a second at least one fluid opening located at the ends of each plate. The first plate has at least one elongate fluid channel extending between the first and second fluid openings. One fluid passageway for a first heat exchanger fluid extends through the first and second fluid openings in each plate and along the elongate channel in the first plate. At least one fin has two thermal transfer surfaces. The first thermal transfer surface is in intimate contact with the second plate. The other fluid passageways for a second heat exchanger fluid are located on each side of the fin.

Abstract: Disclosed herein is a method for producing fluid flow field plates. The method includes cutting through an electrically conductive sheet to create at least one opening for a fluid in the sheet; and embossing the sheet to create therein at least one support for the at least one opening for a fluid.