Abstract:
An evaporative humidifier for a polymer electrolyte membrane fuel cell system including a fuel cell stack, comprising: a condensation channel to which exhaust gas from the fuel cell stack is introduced; an evaporation channel to which supply gas for the fuel cell stack is introduced; a partition wall for separating the condensation channel and the evaporation channel from each other; and a water distribution unit for supplying water into the evaporation channel, wherein the water is condensed in the condensation channel by heat exchange between the exhaust gas and the supply gas.
Abstract:
An evaporative humidifier for a polymer electrolyte membrane fuel cell system including a fuel cell stack, comprising: a condensation channel to which exhaust gas from the fuel cell stack is introduced; an evaporation channel to which supply gas for the fuel cell stack is introduced; a partition wall for separating the condensation channel and the evaporation channel from each other; and a water distribution unit for supplying water into the evaporation channel, wherein the water is condensed in the condensation channel by heat exchange between the exhaust gas and the supply gas.
Abstract:
A heat exchanger for storing or releasing heat including a channel unit in which a heat medium flows; and a heat exchange unit contacted-combined with the channel unit and containing a porous heat transfer member which conducts heat exchange with a thermal storage material.
Abstract:
A convection oven includes an oven body having a heating chamber heated by a heat source, and a vibration unit mounted at one side of the oven body and vibrating heated air so as to be uniformly distributed within the heating chamber. As the vibration unit vibrates, air within the heating chamber can be fluctuated periodically to promote mixing between more heated air and less heated air to make temperature of air uniform. Accordingly, heat can be uniformly distributed to a cooking target or material, quality of cooking can be improved, and in addition, because cooking time can be shortened, the performance of the oven can be enhanced.
Abstract:
The present invention provides a control signal part and a liquid crystal display including the control signal part in which damage to wires due to electrolysis is prevented. A high voltage redundancy wire(s) is formed at one side or both sides of a high voltage signal wire, thereby to form equipotential around the high voltage signal wire. The control signal part includes a first signal wire that transmits a first signal voltage, a second signal wire that transmits a second signal voltage smaller than the first signal voltage, and a first redundancy wire that transmits the same voltage as the first signal voltage. The first redundancy wire is formed between the first signal wire and the second signal wire. The control signal part may also include a second redundancy wire that transmits the same voltage as the first signal voltage. Herein, the first redundancy wire is located at one side of the first signal wire and the second redundancy wire is located at the other side of the first signal wire.