摘要:
A micro-electro-mechanical generator has a liquid chamber, a heating block, an elongated elastic piezoelectric plate and a pair of electrodes. The liquid chamber is defined by bottom blocks which include the heating block and side walls, and can maintain a liquid. The heating block generates bubbles within the liquid chamber. The elongated elastic piezoelectric plate has a piezoelectric material layer, and is positioned in the liquid chamber adjacent to an upper portion of the heating block. The elongated elastic piezoelectric plate is deformable by contact with the bubbles, wherein a first end of the elongated elastic piezoelectric plate is a free end and a second end of the elongated elastic piezoelectric plate is a fixed end. The pair of electrodes are electrically connected to the piezoelectric material layer.
摘要:
Disclosed are a portable refrigerator with a fuel cell system and an operating method thereof. The portable refrigerator with a fuel cell system comprises a case having a storage space, a fuel cell stack disposed in the case, a gas tank configured to store gas necessary to operate the fuel cell stack, a fan configured to cool the fuel cell stack and supply air to the fuel stack, a thermoelectric cooling means disposed in the case, and configured to cool the storage space, a battery charged by the fuel cell stack, and configured to supply power to the thermoelectric cooling means, and a controller configured to control the fuel cell stack and the thermoelectric cooling means.
摘要:
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.
摘要:
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.
摘要:
A heat exchanger having an extended surface plate includes a plurality of heat exchanging bodies having therein flow paths along which a heat transfer medium flows, and extended surface plates each disposed between the heat exchanging bodies and having inclined surfaces in horizontal and vertical directions. Also disclosed is a dehumidifier having the heat exchanger. Moisture in the air may be effectively absorbed by a dehumidifying liquid, and the heat exchanger may have enhanced structural strength.
摘要:
Disclosed is a fuel cell including, a stack having fuel channels through which fuel flows and air channels through which air flows, the fuel channels and air channels being located at both sides of a reaction film, an actuator disposed to be involved in the air channels, the actuator allowing external air of the stack to affect the air channels, and a skirt extending from the stack with communicating with the air channels.
摘要:
Disclosed is a fuel cell including, a stack having fuel channels through which fuel flows and air channels through which air flows, the fuel channels and air channels being located at both sides of a reaction film, an actuator disposed to be involved in the air channels, the actuator allowing external air of the stack to affect the air channels, and a skirt extending from the stack with communicating with the air channels.
摘要:
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.
摘要:
A heat exchanger having an extended surface plate includes a plurality of heat exchanging bodies having therein flow paths along which a heat transfer medium flows, and extended surface plates each disposed between the heat exchanging bodies and having inclined surfaces in horizontal and vertical directions. Also disclosed is a dehumidifier having the heat exchanger. Moisture in the air may be effectively absorbed by a dehumidifying liquid, and the heat exchanger may have enhanced structural strength.
摘要:
Disclosed are a dehumidification apparatus, and an air conditioning apparatus and system having the same. The dehumidification apparatus includes: a desiccant rotor having a desiccant for adsorbing moisture; and a regeneration unit disposed at one side of the desiccant rotor, for desorbing the moisture adsorbed to the desiccant. The regeneration unit includes at least one of a hollow hot water line containing hot water exchanging heat with the air flowing toward the desiccant rotor. The dehumidification apparatus efficiently reproduces the desiccant for dehumidification and air conditioning.