Abstract: A humidity controller apparatus (20) contains an adsorption rotor (24) and a heater (25). A first passage (21) along which a first air stream flows and a second passage (22) along which a second air stream flows are formed in the humidity controller apparatus (20). The amount of heat exchange between the first and second air streams and the amount of moisture exchange between the first and second air streams vary by adjustment to the rotating speed of the adsorption rotor (24), and the humidity controller apparatus (20) is switched between a dehumidification operation and a humidification/heating operation. During the dehumidification operation, the rotating speed of the adsorption rotor (24) is set low. The first air stream is dehumidified by the adsorption rotor (24) and then supplied to the inside of a room. The second air stream is used for regeneration of the adsorption rotor (24) and then discharged to the outside of the room.

Abstract: A cell body receiving fuel supply to generate power, an inverter receiving output power of the cell body to convert it into ac power, and a vapor-compression refrigerating machine receiving the ac power output from the inverter as operating power and using a motor as its driving source are provided. An intermediate part of a connection line connecting the aforementioned inverter and vapor-compression refrigerating machine is connected to a refrigeration air-conditioning power board to make effective use of a fuel cell and to prevent the footprint and construction costs from increasing.

Abstract: A stack of disc-type fuel cells and disc-type separators stacked alternately is housed in a casing. A fuel supply part extends through the central part of the upper wall of the casing to supply fuel to the central part of the stack. An air supply part extends through the central part of the lower wall of the casing to supply air to the central part of the stack. A fuel discharge part extends through the central part of the lower wall of the casing to discharge fuel after power generation. An exhaust discharge part extends through the peripheral part of the lower wall of the casing to discharge an exhaust gas resulting from the combustion of mixture of the fuel after power generation and air, and a recirculation part for mixing the fuel after power generation discharged from the fuel discharge part with newly-supplied fuel.

Abstract: To properly control a flow rate of fluid through a flow path for heat recovery to the overall flow rate, a branch flow rate regulating part is provided that branches air between an air supply source and a heat exchanger to lead the branched air to a heat recovery path, and regulates the amount of branched air.

Abstract: A cell body receiving fuel supply to generate power, an inverter receiving output power of the cell body to convert it into ac power, and a vapor-compression refrigerating machine receiving the ac power output from the inverter as operating power and using a motor as its driving source are provided. An intermediate part of a connection line connecting the aforementioned inverter and vapor-compression refrigerating machine is connected to a refrigeration air-conditioning power board to make effective use of a fuel cell and to prevent the footprint and construction costs from increasing.

Abstract: A humidity controller apparatus (20) contains an adsorption rotor (24) and a heater (25). A first passage (21) along which a first air stream flows and a second passage (22) along which a second air stream flows are formed in the humidity controller apparatus (20). The amount of heat exchange between the first and second air streams and the amount of moisture exchange between the first and second air streams vary by adjustment to the rotating speed of the adsorption rotor (24), and the humidity controller apparatus (20) is switched between a dehumidification operation and a humidification/heating operation. During the dehumidification operation, the rotating speed of the adsorption rotor (24) is set low. The first air stream is dehumidified by the adsorption rotor (24) and then supplied to the inside of a room. The second air stream is used for regeneration of the adsorption rotor (24) and then discharged to the outside of the room.

Abstract: Placed in a fuel reformer (5) is a catalyst (27) which exhibits an activity to the partial oxidation reaction of a source fuel. The source fuel, oxygen, and steam are supplied to the fuel reformer (5) such that the ratio O2/C, i.e., the ratio of the number of moles of the oxygen to the number of moles of carbon of the source fuel, is not less than 0.9 times the O2/C theoretical mixture ratio in the partial oxidation reaction, and the H2O/C ratio, i.e., the ratio of the number of moles of the steam to the number of the source fuel carbon moles is not less than 0.5, wherein the partial oxidation reaction occurs in the catalyst (27) to cause a water gas shift reaction to take place in which CO produced by the partial oxidation reaction is a reactant, for generation of hydrogen.

Abstract: A fuel cell electrical power generation system (1) is provided which is made up of components including a desulfurizer (3), a prereformer (5), an internal reforming type solid electrolyte fuel cell (7) etc. The fuel cell (7) is made up of components including an air electrode (31), an electrolyte (33), a fuel electrode (35), an air chamber (37), a fuel chamber (39), external circuits etc. The prereformer (5) operates as follows. After being flowed through the desulfurizer (3), the town gas/air is flowed through the prereformer (5) during the startup phase of the internal reforming type solid electrolyte fuel cell (7), thereby to cause partial oxidation of hydrocarbons present in the town gas to generate a partial oxidation gas which contains CO and H2. This partial oxidation gas is supplied to the fuel chamber (39).

Abstract: Shift conversion of hydrogen-rich reformed gas produced by reaction including partial oxidation of feed gas in a reforming reaction section (6) is made by its water gas shift reaction with shift conversion catalyst in a shift reaction section (10) in order to reduce CO contained in the reformed gas and enhance the yield of hydrogen. In this case, for the purpose of enabling high-temperature reformed gas from the reforming reaction section (6) to undergo the shift conversion as it is and thereby simplifying the construction of a shift conversion unit, the reformed gas from the reforming reaction section (6) is introduced directly into a reformed gas passage (11) of the shift reaction section (10) and thereby undergoes the shift reaction while heat-exchanging with the feed gas.

Abstract: A cycle-side system (20) is formed by duct connecting a compressor (21), a heat exchanger (30), a demoisturizer (22), and an expansion device (23) in that order. The compressor (21) draws in room air and supply air for ventilation and compresses the same. The compressed air exchanges heat with exhaust air for ventilation in the heat exchanger (30), thereby being cooled. Water vapor in the cooled, compressed air is removed in the demoisturizer (22). The demoisturizer (22) is provided with a separation membrane and separates water vapor in the compressed air without the occurrence of condensation. Thereafter, the compressed air is expanded in the expansion device (23) to change into low-temperature air. The low-temperature air is supplied into a room. On the other hand, the heat exchanger (30) is fed exhaust air cooled in a humidifying cooler (41).

Abstract: Water is used as a refrigerant, and a humidification cooler (41) which evaporates the water to generate cold heat and a dehumidifier (42) are provided. A compressor (50) which compresses water vapor separated by the dehumidifier (42) is provided. A moisture discharging device (60) which discharges water vapor compressed in the compressor (50) is provided. The compressor (50) is driven by a steam turbine (80) capable of generating rotational power from thermal energy.

Abstract: When humidifying, almost to water vapor saturation, reformed gas that is supplied to a hydrogen electrode of a solid polymer type fuel cell (1) and air that is supplied to an oxygen electrode of the fuel cell (1), heating for obtaining water vapor to establish such saturation is not required. For the purpose of improving the thermal efficiency of a fuel cell system, water vapor contained in hydrogen electrode exhaust gas exhausted from the hydrogen electrode of the fuel cell (1) is let to penetrate through a water vapor permeable membrane (34), whereas water vapor contained either in air that is introduced into a partial oxidation reformation section (6) or in oxygen electrode exhaust gas exhausted from the oxygen electrode is let to penetrate through the water vapor permeable membrane (34) so that the water vapor is supplied to air that is supplied to the oxygen electrode of the fuel cell (1).

Abstract: Hydrogen-rich reformed gas is produced by reaction including partial oxidation of feed gas in a reforming reaction section (6). In this case, for the purpose of reducing temperature variations in the reforming reaction section (6), improving the thermal efficiency thereof and providing a reformer (A) with a simple and compact construction, the reformer (A) is formed in a double-wall structure consisting of a housing (1) and partitions (2), (2) inside of the housing (1), the reforming reaction section (6) is contained between the partitions (2), (2), and a feed gas passage (3) is provided by the space between the housing (1) and the partition (2). In this manner, the feed gas passage (3) is provided in the surrounding area of the reforming reaction section (6). The reforming reaction section (6) is thermally insulated by the feed gas passage (3) so that temperature variations in the reforming reaction section (6) can be reduced.

Abstract: A water vapor separating section (20), a compressor (30), and a main heat exchanger (40) are connected in that order to form a cycle system (12). The inside of the water vapor separating section (20) is divided by a water vapor permeable membrane (21) into an air space (22) and a water vapor space (23). A mixture of ventilation exhaust air and outdoor air is delivered, as heat source air, to the water vapor space (23). Water vapor contained in the heat source air passes through the water vapor permeable membrane (21), thereby being separated from the heat source air. The water vapor separated is compressed in the compressor (30) and thereafter delivered to the main heat exchanger (40). In the main heat exchanger (40), the water vapor from the compressor (30) condenses and to-be-heated air in a utilization system (13) is heated by heat of condensation of the water vapor.

Abstract: In a refrigeration system (10), an evaporator (11) and a condenser (15) are each formed of a container-like member (55). The inside of the container-like member (55) is divided into a liquid side space (12, 16) and a gas side space (13, 17) by a moisture permeable membrane (14, 18). Both the gas side spaces (13, 17) are held in a predetermined reduced-pressure condition. Both the liquid side spaces (12, 16) are placed in an atmospheric pressure condition. Water vapor provided by evaporation of water in the liquid side space (12) of the evaporator (11) passes through the moisture permeable membrane (14) and moves to the gas side space (13). The water vapor in the gas side space (13) is sucked by a compressor (21) so as to be pumped to the gas side space (17) of the condenser (15). In the condenser (15), the water vapor in the gas side space (17) moves to the liquid side space (16) and then condensates therein.

Abstract: A cycle-side system (20) is formed by duct connecting a compressor (21), a heat exchanger (30), a demoisturizer (22), and an expansion device (23) in that order. The compressor (21) draws in room air and supply air for ventilation and compresses the same. The compressed air exchanges heat with exhaust air for ventilation in the heat exchanger (30), thereby being cooled. Water vapor in the cooled, compressed air is removed in the demoisturizer (22). The demoisturizer (22) is provided with a separation membrane and separates water vapor in the compressed air without the occurrence of condensation. Thereafter, the compressed air is expanded in the expansion device (23) to change into low-temperature air. The low-temperature air is supplied into a room. On the other hand, the heat exchanger (30) is fed exhaust air cooled in a humidifying cooler (41).

Abstract: A cyclic circuit (20) is constructed by sequentially connecting an expander (22), a heat exchanger (30) and a compressor (21). A dehumidifying mechanism (60) is provided for dehumidifying a heat-absorbing air taken in through an inlet duct (23). An internal heat exchanger (15) is provided for cooling the dehumidified heat-absorbing air and then supplying it to the expander (22). The heat-absorbing air expands in the expander (22) to reduce its temperature. Since the heat-absorbing air has been dehumidified in advance, the moisture thereof does not condense during the expansion thereof. The heat-absorbing air having reached a low temperature through expansion flows into the heat exchanger (30) and absorbs heat from a room air therein. Thereafter, the heat-absorbing air is compressed in the compressor (21), regenerates a rotor member (61) and is then discharged.

Abstract: A first channel (20) is formed by sequentially connecting a compressor (21), a heat exchanger (30) and an expander (22). In the first channel (20), an outside air is taken through a first inlet duct (23) and supplied to a room through a first outlet duct (24). A second channel (40) is formed by connecting both ends of the heat exchanger (30) to ducts (43, 44). In the second channel (40), a room air is taken through the second inlet duct (43) and discharged to outdoors through the second outlet duct (44). A moisture absorbing section (62) of a dehumidifying mechanism (60) is provided in the first inlet duct (23), while a moisture releasing section (63) thereof is provided in the second inlet duct (43). A rotor member (61) including a solid adsorbent rotatively moves between the moisture absorbing section (62) and the moisture releasing section (63). Air dehumidified in the moisture absorbing section (62) is supplied to the compressor (21).

Abstract: A cycle-side system (20) is formed by duct connecting a compressor (21), a heat exchanger (30), a demoisturizer (22), and an expansion device (23) in that order. The compressor (21) draws in room air and supply air for ventilation and compresses the same. The compressed air exchanges heat with exhaust air for ventilation in the heat exchanger (30), thereby being cooled. Water vapor in the cooled, compressed air is removed in the demoisturizer (22). The demoisturizer (22) is provided with a separation membrane and separates water vapor in the compressed air without the occurrence of condensation. Thereafter, the compressed air is expanded in the expansion device (23) to change into low-temperature air. The low-temperature air is supplied into a room. On the other hand, the heat exchanger (30) is fed exhaust air cooled in a humidifying cooler (41).

Abstract: A first channel (20) is formed by sequentially connecting a compressor (21), a vapor separator (55), a heat exchanger (30) and an expander (22). In the first channel (20), a room air is taken as a primary air and discharged to outdoors. A second channel (40) is formed by connecting a heat exchanger (30) to a second inlet duct (43) and a second outlet duct (44). In the second channel (40), an outside air is taken as a secondary air and supplied to a room. The vapor separator (55) is connected to a vacuum pump (36). The vapor separator (55) separates vapor from the compressed primary air to dehumidify the primary air to or below the absolute humidity of the outside air. The vapor separated by the vapor separator (55) is partly supplied to the secondary air in the second outlet duct (44). Then, the secondary air thus humidified is supplied to the room.