Abstract:
Provided are a membrane humidifier cartridge, in which a hollow fiber membrane accommodated in a cartridge may be prevented from being damaged by a fluid, and a fuel cell membrane humidifier including the same. The membrane humidifier cartridge may include: an inner case accommodating therein a hollow fiber membrane in which a first fluid flows; a potting portion fixing a terminal of the hollow fiber membrane; a first mesh hole portion into which the second fluid is introduced, and formed to protrude from one side of the inner case; and a second mesh hole portion formed to protrude from another side of the inner case, in which the second fluid introduced through the first mesh hole portion is discharged after exchanging moisture with the first fluid through the hollow fiber membrane.
Abstract:
The present invention relates to a fuel cell system capable of adjusting a bypass flow rate, which can automatically adjust the bypass flow rate according to the temperature of dry gas flowing from a blower. A fuel cell system capable of adjusting a bypass flow rate according to one embodiment of the present invention comprises: a blower for supplying dry gas through a supply flow path; a dry gas inlet for supplying at least a portion of the dry gas supplied from the blower to a membrane humidifier; a bypass flow path for supplying at least a portion of the dry gas supplied from the blower to a fuel cell stack by bypassing the membrane humidifier; and a bypass flow rate adjustment part formed in the bypass flow path and for adjusting the degree of opening of the bypass flow path according to the temperature of the dry gas flowing from the blower.
Abstract:
The present invention relates to a cartridge for a fuel cell humidifier, and a fuel cell humidifier, the cartridge comprising: an inner case having both ends opened; a hollow fiber membrane bundle received in the inner case; an inner inlet and an inner outlet formed on the inner case so as to be spaced along a first axial direction; a first potting layer for fixing one end of the hollow fiber membrane bundle at one end of the inner case; and a second potting layer for fixing the other end of the hollow fiber membrane bundle at the other end of the inner case, wherein the packing density is 0.405 to 0.625 inclusive, the packing density being based on, with respect to a second axial direction perpendicular to the first axial direction, the potting cross-section of the inside of the one end of the inner case where the first potting layer is potted, and the membrane cross-section of the hollow fiber membrane bundle.
Abstract:
The present invention relates to a fuel cell system capable of adjusting a bypass flow rate, in which the bypass flow rate can be automatically adjusted according to the temperature of an exhaust gas discharged from a fuel cell stack. The fuel cell system capable of adjusting a bypass flow rate, according to an embodiment of the present invention, comprises: an exhaust gas inlet flow path; an exhaust gas discharge flow path; a bypass flow path for bypassing a membrane humidifier to allow at least a portion of an exhaust gas discharged from a fuel cell stack to flow to the exhaust gas discharge flow path; and a bypass flow rate control unit that is formed in the bypass flow path and adjusts the opening degree of the bypass flow path according to the temperature of the exhaust gas discharged from the fuel cell stack.
Abstract:
A composite hollow fiber membrane having improved water permeability and peel strength and a manufacturing method thereof are disclosed. The composite hollow fiber membrane includes a tubular polymer membrane having an outer surface and an inner surface, and a tubular braid disposed between the outer surface and the inner surface of the tubular polymer membrane, the tubular braid comprises a plurality of yarns, each of the yarns includes first multifilaments and second multifilaments, each of the first multifilaments includes a plurality of first monofilaments having fineness of 3 to 50 denier, and each of the second multifilaments includes a plurality of second monofilaments having fineness of 0.4 to 3 denier.