摘要:
A heat spreader assembly that provides electrical, thermal and structural functions to the fuel cell. The heat spreader assembly comprises two bulk composite material layers, and a heat spreader element. The heat spreader element includes a copper layer sandwiched between two stainless steel layers. The stainless steel layers are bonded to the bulk composite layers by a conductive thermal set adhesive. The lamination applied to the stainless steel layers enables heat and electricity to flow from the cathode while maintaining low resistance among other layers of the fuel cell. The copper layer diffuses heat across the layer and functions as cathode current collector for a fuel cell. The bulk composite material layers function as a cold side of an enthalpy exchanger system and a cathode flow field. Further the composite material includes flow channels formed throughout the material to evenly distribute incoming air over the enthalpy exchanger membrane and to the cathode of the MEA.
摘要:
A fuel cell system which includes a fuel distribution structure that uniformly distributes vaporizing fuel to a fuel cell is provided. As the fuel travels in a flow field channel in the fuel distribution structure, it is substantially converted to a vapor by the heat of the fuel cell operation in such a manner that the resulting vapor pressure works to substantially uniformly distribute fuel evenly outwardly across substantially the entire active area of the anode aspect of one or more membrane electrode assemblies in the system, and whereby localized, uneven “hot spots” of fuel at the anode aspects are substantially prevented. A pair of enthalpy exchanger and heat spreader assemblies include a cathode current collector element that also has a heat spreader plate that collects and redirects heat in the fuel cell system, the assembly acting to manage the heat, temperature and condensation in the fuel cell system.
摘要:
A fuel cell system which includes a fuel distribution structure that uniformly distributes vaporizing fuel to a fuel cell is provided. As the fuel travels in a flow field channel in the fuel distribution structure, it is substantially converted to a vapor by the heat of the fuel cell operation in such a manner that the resulting vapor pressure works to substantially uniformly distribute fuel evenly outwardly across substantially the entire active area of the anode aspect of one or more membrane electrode assemblies in the system, and whereby localized, uneven “hot spots” of fuel at the anode aspects are substantially prevented. A pair of enthalpy exchanger and heat spreader assemblies include a cathode current collector element that also has a heat spreader plate that collects and redirects heat in the fuel cell system, the assembly acting to manage the heat, temperature and condensation in the fuel cell system.
摘要:
A system and method for managing gas bubbles in a liquid flow system are described. In particular, according to the system and method, novel techniques reduce a volume of cavities in the liquid flow system and limit a cross-sectional area of the liquid flow system to a maximum cross-sectional area of tolerably sized bubbles. In this manner, by reducing the cavity volumes and limiting cross-sectional areas, the formation of intolerably sized bubbles and the aggregation of tolerably sized bubbles into intolerably sized bubbles are each substantially prevented. Also, bubbles may be removed from the system to reduce the quantity of bubbles that are to be managed.
摘要:
The present disclosure relates to several embodiments in which different self-developing film formats are constructed in order to permit easy operator separation of the pod and trap from adjacent integral film units.
摘要:
A film assemblage of the self-developing type which has a pair of upper and lower carrier sheets in juxtaposed relationship to one another. A pair of openings is provided in each of the carrier sheets. A photosensitive sheet and a positive receiving sheet are joined to outer surfaces of the upper and lower carrier sheets; respectively, so as to cover the respective openings. The pair of upper and lower carrier sheets is fixedly joined together in overlapping relationship, whereby the photosensitive and receiving sheets are in superimposed and spaced apart relationship thereby forming, in combination, an image area of the film.
摘要:
A novel molded fabric is made by bringing a first patterned group of numerous discrete disjoint elements positioned on a first side of a contact boundary extending throughout the thickness of the fabric being molded, together with a second patterned group of numerous discrete disjoint elements, over-lapping the first group of discrete disjoint elements, on the opposite side of the contact boundary, and joining the elements together at their tip portions. Various techniques are disclosed for maintaining separation of overlapping cross-over portions of the thread elements crossing each other during joining the terminal portions together, so that they simulate woven cloth. First and second rolls can carry the elements in molten form within cavities in the roller surfaces or patterns of solid elements within first and second matrices, can be joined together at the nip of the rolls by heat or chemical means to produce substantial savings in fabric manufacture.
摘要:
The present invention is an improved film assemblage of the self developing type that allows separation of both the pod and trap portions of the film frame, but sealing of the ends of the separated film portions including pod, trap, and image area. The present invention also provides such a film assemblage of the foregoing type whereby further ensuring uniform flow of the processing fluid during the spreading process. A method of manufacturing said film is also provided.
摘要:
There is disclosed an improved photographic apparatus of the self-developing type and method of operation which includes a film assemblage. The camera includes a housing assembly; strip of photographic film; a strip of self-developing photosensitive film; a foldable strip of carrier sheet material; a mechanism for taking up the photosensitive film strip past an exposure station for exposure thereof and for storage of the exposed photosensitive film strip. An advancing mechanism is provided for advancing the exposed photosensitive film strip from the taking up mechanism and the carrier strip through an exit. Provision is made for a mechanism which is operable for dispensing processing fluid between the exposed film strip and the sheet; and, a pressure applying mechanism is operable for superimposing the photosensitive film relative to the carrier sheet following dispensing of the fluid between the film and sheet for distributing the fluid over preselected portions of the exposed photosensitive film to form an integral photographic film strip in response to the advancing mechanism withdrawing the strip and the sheet through the pressure applying mechanism and the exit.