JP2001193966A - Humidity regulating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new humidity regulating system in combination with a humidity regulator and a cogeneration system. SOLUTION: A fuel cell and a modified part are provided in the cogeneration apparatus 10. A hydrogen generated in the modified part is supplied to the cell, and a power is generated. A water is heated by utilizing the waste heats of the cell and the modified part, and generated warm water is stored in a hot water tank. A dehumidifier 50 having a desiccant rotor is provided in the garret of a residence 70. The dehumidifier 50 introduces the outdoor air, dehumidifies it, and supplies it to a room. The indoor air is inputted, heated and the desiccant is recycled by the heated indoor air. The warm water of the tank is supplied to the dehumidifier 50 through warm water piping 36. The dehumidifier 50 heats the indoor air by the supplied warm water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a humidity control system for dehumidifying or humidifying a room.

[0002]

2. Description of the Related Art Hitherto, as a humidity control device for adjusting the humidity of air, there has been used a refrigeration air-conditioning handbook, applied edition of the Japan Refrigeration Association.
As disclosed in “New Edition / Fourth Edition”, pp. 126-132, there is known an apparatus that dehumidifies air using an adsorbent. This type of humidity control device performs dehumidification by adsorbing moisture in the air to an adsorbent, and supplies the dehumidified air to the room. On the other hand, the adsorbent is appropriately regenerated to secure the adsorbed amount of the adsorbent. That is, air heated to about 80 to 90 ° C. is brought into contact with the adsorbent, thereby desorbing moisture from the adsorbent to perform regeneration. Further, according to this type of humidity control device, it is possible to humidify the air by utilizing the water desorbed from the adsorbent.

[0003] On the other hand, conventionally, a cogeneration system which extracts both electric power and heat from supplied fuel to obtain high thermal efficiency in total has been known.
For example, fuel is burned by an engine, a gas turbine, or the like to drive a generator, and on the other hand, hot water is generated using waste heat of the engine or the like. The generated hot water is used for hot water supply and the like. In recent years, a cogeneration system using a fuel cell has been proposed. Furthermore, this type of cogeneration system is being studied for application to small-scale buildings such as small and medium-sized buildings and homes.

[0004]

As described above, in a humidity control apparatus using an adsorbent, heat is required to regenerate the adsorbent. Therefore, when this heat is separately supplied by an electric heater or the like, there is a problem that the energy required for humidity control becomes excessive. On the other hand, the heat from the cogeneration system is often used mainly for hot water supply. Therefore, the use of the output heat is limited, and the use of the heat has not been sufficiently performed. As described above, while the humidity control apparatus and the cogeneration system are in a relationship capable of complementing each other's problems, the combination of the two is not found, so the humidity control apparatus and the cogeneration system are combined. The emergence of a new device was desired.

[0005] The present invention has been made in view of the above points, and an object thereof is to provide a new humidity control system combining a humidity control device and a cogeneration system, and to effectively use energy. It is in.

[0006]

According to a first aspect of the present invention, there is provided a cogeneration apparatus (10) which is directed to a humidity control system and is supplied with fuel and outputs electric power and heat.
And a humidity control device (50) for adjusting the humidity of the taken-in air and supplying the air to the room after the humidity control, while the humidity control device (50) includes an adsorbent to absorb moisture from the first air. Second
A humidity control section (53) for dehumidifying air, and heating and controlling the second air by the heat output from the cogeneration device (10) to regenerate the adsorbent of the humidity control section (53). A heating section (55) for supplying to the wet section (53), for supplying the first air or the second air flowing out of the humidity control section (53) to the room.

According to a second aspect of the present invention, there is provided a cogeneration apparatus (10) according to the first aspect.
Is provided with a fuel cell (11), and a reforming section (20) for supplying hydrogen generated by reforming the fuel to the fuel cell (11). It outputs waste heat of one or both of the battery (11) and the reforming section (20) as warm heat.

According to a third aspect of the present invention, in the first and second aspects, the humidity control device (50) takes in at least outdoor air as first air and at least indoor air as second air. While taking in as air, the humidity control section (5
The first air flowing out of 3) is supplied indoors and the humidity control section (5
The second air discharged from 3) is discharged outside the room.

According to a fourth aspect of the present invention, there is provided the humidity control apparatus according to the third aspect, wherein the humidity control section (53) of the humidity control device (50) is provided.
Is for dehumidifying the first air so that the absolute humidity of the first air is equal to or lower than the absolute humidity of the room air.

According to a fifth aspect of the present invention, in the above-mentioned third or fourth aspect, the humidity control device (50) includes the first air flowing out of the humidity control section (53) and the heating section (50). 55) a heat exchange unit (54) for exchanging heat with the second air sent to the second air.

According to a sixth aspect of the present invention, in the above-mentioned fourth aspect, the humidity control device (50) includes a humidity control section (5).
In 3), the first air is dehumidified so that the absolute humidity of the first air is lower than the absolute humidity of the room air, and the first air dehumidified by the humidity control unit (53) is cooled by humidification. It is provided with a first humidification cooling unit (56) for supplying to the room after the humidification.

According to a seventh aspect of the present invention, there is provided the humidity control apparatus according to the fourth, fifth and sixth aspects.
Includes a second humidification cooling unit (57) for cooling the second air by humidification and then supplying the second air to the heat exchange unit (54).

According to an eighth aspect of the present invention, in the above first and second aspects, the humidity control device (50) takes in at least room air as first air and at least outside air as second air. While taking in as air, the humidity control section (5
The second air flowing out of 3) is supplied into the room and the humidity control section (5
The first air discharged from 3) is discharged outside the room.

According to a ninth aspect of the present invention, in the ninth aspect, the humidity control device (50) includes a humidity control unit (5).
A heat exchange section (54) for exchanging heat between the first air flowing out of 3) and the second air sent to the heating section (55).

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, the humidity control device (50) includes the second air humidified in the humidity control portion (53) and the co-generation device (50). The reheating unit (58) is provided for heating by the output heat of (10) and supplying it to the room.

According to an eleventh aspect of the present invention, in the above-mentioned third to tenth aspects, the humidity control device (50) is provided with the first air flowing out of the humidity control part (53). Dehumidifying operation for supplying the air to the room and discharging the second air flowing out of the humidity control section (53) to the outside of the room, and supplying the second air flowing out of the humidity control section (53) to the room and controlling the humidity control section (53). ) Is performed by switching between a humidifying operation of discharging the first air flowing out of the first embodiment and the outside of the room.

According to a twelfth solution of the present invention, in the first solution of the first to eleventh, the adsorbent of the humidity control section (53) is a liquid having a relative humidity of air in contact with the adsorbent. With respect to the difference between the moisture content of the adsorbent when the humidity is 0% and the moisture content when the humidity is 20%, the moisture content when the relative humidity of the air is 10% and the moisture content when the relative humidity is 40% It is composed of a substance whose ratio of the water content difference to the water content is 0.5 or more and 1.5 or less.

According to a thirteenth aspect of the present invention, in the twelfth aspect, the adsorbent of the humidity control section (53) is:
It is composed of xerogel or silica gel.

According to a fourteenth aspect of the present invention, in any one of the third to seventh aspects of the present invention, any one of the room air and the first air dehumidified by the humidity control device (50) is used. Alternatively, an air conditioner (60) is provided that cools the air taken in by performing a refrigeration cycle by exchanging heat with a refrigerant, and supplies the cooled air into a room to perform cooling.

[Operation] In the first solution, fuel is supplied to the cogeneration device (10). The cogeneration device (10) generates electric power based on the supplied fuel, and outputs heat generated at that time as heat. Examples of the cogeneration device (10) include a device that drives a generator using an engine or a gas turbine, and a device that uses a fuel cell.

On the other hand, the humidity control device (50) adjusts the humidity of the air by taking in the first air and the second air. The taken-in first air is sent to the humidity control section (53) and comes into contact with the adsorbent. Thereby, the moisture contained in the first air is adsorbed by the adsorbent, and the first air is dehumidified. The second air is
After being heated in the heating section (55), it is supplied to the humidity control section (53). In the heating section (55), the second air is heated using the heat from the cogeneration device (10). At this time, the heat used for heating the second air may be all or a part of the heat output by the cogeneration device (10). The second air heated by the heating unit (55) is
It comes into contact with the adsorbent in the humidity control section (53). Thereby, moisture is desorbed from the adsorbent and the adsorbent is regenerated, and at the same time, the second air is humidified. And humidity controller (50)
Supplies the first air or the second air from the humidity control section (53) to the room. That is, if the dehumidified first air is supplied to the room, the room is dehumidified, and if the humidified second air is supplied to the room, the room is humidified.

In the second solution, the fuel cell (11) and the reforming section (20) are provided in the cogeneration device (10). The reforming section (20) reforms a hydrocarbon-based fuel such as natural gas or methanol to generate hydrogen. The fuel cell (11) generates power using hydrogen supplied from the reforming section (20). Further, waste heat radiated from the fuel cell (11) is output as warm heat in the form of hot water or the like. Further, when an exothermic reaction such as a partial oxidation reaction is used for reforming the fuel in the reforming section (20), waste heat is also radiated from the reforming section (20). Therefore, in this case, the waste heat of the reforming section (20) is also output as warm heat.

In the third solution, the humidity control device (50)
Take in the first air containing the outdoor air and take in the second air containing the room air. This first air may be only outdoor air, or may be, for example, a mixture of outdoor air and indoor air. The second air may be only room air, or may be, for example, a mixture of room air and outdoor air.

The humidity control device (50) supplies the first air dehumidified in the humidity control section (53) to the room to dehumidify the room. On the other hand, the second air used for the regeneration of the adsorbent in the humidity control section (53) is subsequently discharged outside the room. As mentioned above,
The first air supplied to the room includes outdoor air, and the second air discharged to the outside includes room air. Therefore, by the operation of the humidity control device (50), indoor ventilation is performed together with indoor dehumidification.

In the fourth solution, the humidity control device (50)
In the humidity control section (53), the first air comes into contact with the adsorbent to remove its moisture. At this time, the dehumidification of the first air is performed when the absolute humidity of the first air is equal to or less than the absolute humidity of the indoor air. It is done to become. Then, the first air, which is set to be equal to or lower than the absolute humidity of the room air, is supplied to the room.

In the fifth solution, the humidity control device (50)
Is provided with a heat exchange section (54). The heat exchange section (54)
The first air dehumidified in the humidity control section (53) and a humidity control device (50)
And the second air taken into the tank. Here, since the heat of adsorption is generated when the moisture in the first air is adsorbed by the adsorbent, the temperature of the first air increases due to the dehumidification.
In the heat exchange section (54), the sent first air and second air exchange heat with each other. This heat exchange cools the first air and simultaneously heats the second air. Then, the second air heated in the heat exchange unit (54) is supplied to the heating unit (55).

In the sixth solution, the humidity control device (50)
By dehumidifying the first air in the humidity control section (53), the absolute humidity of the first air becomes lower than the absolute humidity of the room air. The first air dehumidified in the humidity control section (53) is sent to the first humidification cooling section (56). In the first humidification cooling section (56),
Cool by humidifying the air. That is, the temperature of the first air decreases because the water takes enthalpy during humidification. At this time, if the absolute humidity of the first air after being humidified by the first humidifying cooling unit (56) is set to be equal to the absolute humidity of the indoor air, the indoor humidity is maintained at a predetermined value.

In the seventh solution, the humidity control device (50)
Is provided with a second humidification cooling unit (57). Humidity control equipment (50)
The second air taken into the humidifier is sent to the second humidifier / cooler (57). In the second humidification cooling unit (57), the second air is cooled by humidification. That is, since the water added during humidification deprives the enthalpy, the temperature of the second air decreases. The second air is supplied to the second humidifying cooling unit (5
After being cooled in 7), it is sent to the heat exchange section (54).
Therefore, in the heat exchange section (54), the second air cooled in the second humidification cooling section (57) exchanges heat with the first air after dehumidification.

In the eighth solution, the humidity control device (50)
Takes in the first air including the indoor air and the second air including the outdoor air. The first air may be only room air, or may be, for example, a mixture of room air and outdoor air. The second air may be only outdoor air, or may be, for example, a mixture of outdoor air and indoor air.

The humidity control device (50) supplies the second air humidified in the humidity control section (53) into the room to humidify the room. On the other hand, in the humidity control section (53),
The air is then exhausted outside. As described above, the second air supplied into the room includes the outdoor air, and the first air discharged outside the room includes the room air. Therefore, by the operation of the humidity control device (50), indoor ventilation is performed together with indoor dehumidification. In the humidity control device (50),
The adsorbent adsorbs the moisture of the indoor air discharged outside the room as the first air. For this reason, moisture is collected from the indoor air exhausted with the ventilation, and this moisture is provided to the second air.

According to the ninth solution, the humidity control device (50)
Is provided with a heat exchange section (54). The heat exchange section (54)
The first air dehumidified in the humidity control section (53) and a humidity control device (50)
And the second air taken into the tank. Here, since the heat of adsorption is generated when the moisture in the first air is adsorbed by the adsorbent, the temperature of the first air increases due to the dehumidification.
In the heat exchange section (54), the sent first air and second air exchange heat with each other. By this heat exchange, the second air is heated by receiving heat radiated from the first air. Then, the second air heated in the heat exchange unit (54) is supplied to the heating unit (55).

In the tenth solution, the humidity control device (5
0) is provided with a reheating unit (58). In the reheating unit (58), the second air humidified in the humidity control unit (53) is heated by the heat from the cogeneration device (10). Here, in the humidity control section (53), enthalpy is consumed in order to desorb moisture from the adsorbent, so that the temperature of the second air decreases during humidification. Then, the second air whose temperature has been lowered by the humidification is supplied into the room after being heated by the reheating unit (58).

In the eleventh solution means, the dehumidifying operation and the humidifying operation are switched to perform the operation of the humidity control device (5).
0) switches between dehumidification and humidification. That is, during the dehumidifying operation, the first air dehumidified by the humidity control section (53) is supplied to the room. On the other hand, at the time of the humidification operation, the second air humidified by the humidity control section (53) is supplied to the room.

In the twelfth solution, the adsorbent of the humidity control section (53) is constituted by a substance having predetermined characteristics.

In the thirteenth solution, the adsorbent of the humidity control section (53) is made of a specific substance having predetermined characteristics.

In the fourteenth solution, an air conditioner (60) is provided. The air conditioner (60) takes in predetermined air and performs a refrigeration cycle operation to cool the air. Then, the cooled air is supplied into the room to perform a cooling operation. At this time, the air taken in by the air conditioner (60) is composed of the first air dehumidified in the humidity control device (50) and the indoor air maintained at low humidity by the operation of the humidity control device (50). Either one or a mixture of both airs. That is, the air conditioner (60) takes in low-humidity air and cools the air by heat exchange with the refrigerant.

[0037]

According to the present invention, it is possible to provide a novel humidity control system combining a humidity control device (50) using an adsorbent and a cogeneration device (10). For this reason, in the humidity control device (50), the heat required for regeneration of the adsorbent can be covered by the heat output from the cogeneration device (10), while the heat output from the cogeneration device (10) is used in the cogeneration device (10). Applications can be expanded. Therefore, a new humidity control system that can complement the problems of the humidity control device (50) and the cogeneration device (10) can be realized.

According to the third to seventh solving means, the humidity control device (50) enables the indoor to be dehumidified and also allows the indoor to be ventilated. In particular, in the fourth solution, since the absolute humidity of the first air is equal to or lower than the absolute humidity of the room air, the room is sufficiently dehumidified by supplying the dehumidified first air to the room. be able to.

In the fifth solution, the first air and the second air exchange heat in the heat exchange section (54). Therefore, the second air can be heated by the first air whose temperature has been increased by dehumidification, and the amount of heating of the second air in the heating unit (55) can be reduced.

According to the sixth solution, the first air which has been dehumidified by the dehumidifying unit and then radiated by the heat exchanging unit (54) is cooled by the first humidifying cooling unit (56), and then is introduced into the room. Can be supplied. That is, the first air whose temperature has decreased as well as the humidity can be supplied to the room. For this reason, a certain cooling effect can be obtained together with the indoor dehumidification.

Further, in the seventh solution, the second air is cooled by the second humidifying cooling unit (57), and then the heat exchange unit (54) is cooled.
Has been sent to Therefore, the first air that exchanges heat with the second air in the heat exchange section (54) can be cooled to a lower temperature. Therefore, the temperature of the first air supplied into the room can be further reduced, and the cooling effect can be increased.

According to the eighth to tenth solutions, the humidity control apparatus (50) enables humidification of the room,
Room ventilation can also be provided. In the humidity control device (50), since the moisture of the indoor air discharged outside as the first air is adsorbed by the adsorbent, the moisture is collected from the indoor air exhausted with the ventilation, and the collected water is collected. It can be applied to the second air. As a result, energy loss due to ventilation can be reduced, and energy efficiency can be improved.

In particular, in the ninth solution, the heat exchange section (5
In 4), the first air and the second air exchange heat. Therefore, the second air can be heated by the first air whose temperature has been increased by dehumidification, and the amount of heating of the second air in the heating unit (55) can be reduced. Further, in the heat exchange section (54),
Heat can be recovered from room air exhausted with ventilation and applied to the second air. Therefore, according to the present solution, energy loss due to ventilation can be further reduced, and energy efficiency can be further improved.

According to the tenth solution, the second air humidified in the humidity control section (53) can be supplied to the room after being heated in the reheating section (58). For this reason,
A certain heating effect can be obtained together with the humidification of the room.

According to the eleventh solving means, it is possible to switch between indoor dehumidification and humidification.

According to the twelfth and thirteenth solving means,
The adsorbent can be constituted by a substance having predetermined characteristics. That is, even when the relative humidity of the air in contact with the adsorbent changes over a wide range, a substance whose moisture content can sufficiently change with the change of the relative humidity of the air may be used as the adsorbent. it can. Here, for example, the relative humidity of the first air and the second air in contact with the adsorbent greatly differs between when dehumidifying the room in summer and when humidifying the room in winter. On the other hand, according to the present solution, since the predetermined substance is used as the adsorbent, it is possible to sufficiently perform dehumidification or humidification of air even if the state of air in contact with the adsorbent changes greatly. .

In the fourteenth solution, the air conditioner (60) cools low humidity air such as dehumidified first air. Therefore, the air conditioner (60)
Even if the air is cooled by the above, the moisture in the air does not condense and no drain water is generated. For this reason, it is not necessary to treat drain water or the like, and the configuration of the air conditioner (60) can be simplified. Further, since the humidity control device (50) supplies air indoors to dehumidify the air, the air conditioner (60) does not need to dehumidify the air by condensing moisture. Therefore, the evaporation temperature of the refrigerant in the air conditioner (60) can be set higher than usual. As a result, the refrigeration cycle operation can be performed with high efficiency,
Energy efficiency can be increased.

[0048]

Embodiment 1 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the humidity control system according to the first embodiment includes a cogeneration device (10) having a fuel cell (11) and a dehumidifier (50) as a humidity control device. , House (70). The cogeneration device (10) is installed outdoors. on the other hand,
The dehumidifier (50) is installed in the space above the ceiling. A pair of hot water pipes (36) is provided between the cogeneration device (10) and the dehumidifier (50).

<< Structure and Operation of Cogeneration Device >> As shown in FIG. 2, the cogeneration device (10) includes a reforming section (20) and a fuel cell (11).

The fuel cell (11) has an air electrode (cathode) (12) which is a catalyst electrode and a fuel electrode (also a catalyst electrode).
(Anode) and (13), and is configured as a solid polymer electrolyte type. Air supply passage (14) for air electrode (12)
The air blower (15) is connected through. The air blower (15) has a variable air supply amount by changing the rotation speed. On the other hand, a reforming section (20) is connected to the fuel electrode (13) via a reformed gas supply passage (16).

The reforming section (20) includes a fuel reformer (21),
The CO converter (22) and the CO selective oxidizer (23) are connected in order. The reformer (20) is connected to the fuel electrode (13) of the fuel cell (11) on the side of the CO selective oxidizer (23). Also, on the fuel reformer (21) side of the reforming section (20),
Raw fuel source (city gas) via raw gas supply passage (18)
(17) is connected. A branch passage (19) branched from the air supply passage (14) is connected to the fuel reformer (21). This branch passage (19) is a fuel reformer (21)
To supply air for the partial oxidation reaction. On the other hand, a steam supply source (not shown) is connected to the CO converter (22). This steam source is
This is for supplying water vapor for the water gas shift reaction to the CO converter (22).

The fuel reformer (21) is filled with a catalyst exhibiting activity in the partial oxidation reaction (a catalyst in which Rh or Ru is supported on Al ₂ O ₃ ). The CO shift converter (22) is filled with a catalyst exhibiting activity in the water gas shift reaction (a catalyst in which Pt is supported on Al ₂ O ₃ ). The CO selective oxidizer (23) is filled with a catalyst exhibiting activity in the selective oxidation reaction of CO (a catalyst in which Ru or Pt is supported on Al ₂ O ₃ or zeolite).

In the fuel reformer (21), a partial oxidation reaction of the raw fuel occurs on the catalyst, and hydrogen and CO are generated. The reformed gas exiting the fuel reformer (21) is sent to a CO converter (22). In the CO converter (22), a water gas shift reaction occurs on the catalyst, and the CO concentration of the reformed gas decreases. The reformed gas leaving the CO converter (22) is CO
It is sent to the selective oxidizer (23). In the CO selective oxidizer (23), a selective oxidation reaction of CO occurs on the catalyst, and the CO concentration of the reformed gas further decreases. The reformed gas exiting the CO selective oxidation reactor is introduced into the fuel electrode (13) of the fuel cell (11).

The fuel reformer (21) is provided with an electric heater (not shown) for starting. That is, since the temperature of the fuel reformer (21) is low at the time of starting, the temperature at which the catalyst exhibits activity (for example, 46
(About 0 ° C.). After the start, the power supply to the electric heater is stopped. Since the partial oxidation reaction in the fuel reformer (21) is an exothermic reaction, no external heat supply is required after the start-up.

In the fuel cell (11), air is introduced into the air electrode (12) through the air supply passage (14), and reformed gas is introduced into the fuel electrode (13) through the reformed gas supply passage (16). Is done. In the fuel cell (11), at the electrode surface of the fuel electrode ^{_{(13) 2H 2 → 4H +}} + 4e -, O 2 + 4H + + 4e at the electrode surface of the air electrode (12) ^- → cause 2H ₂ O in the cell reaction. By this cell reaction, DC power is output from the fuel cell (11). Further, an inverter (28) is connected to the fuel cell (11) via a voltage regulator (27) using a variable resistor, and an electric power load (29) is connected to the inverter (28). Then, the DC power from the fuel cell (11) is converted into AC power of a predetermined frequency at a predetermined voltage and supplied to the power addition.

An off-gas burner (24) is provided downstream of the fuel cell (11). Offgas burner (24)
Are connected to respective exhaust ports of the air electrode (12) and the fuel electrode (13) in the fuel cell (11) via exhaust gas passages (25, 26). The off-gas burner (24) is filled with a combustion catalyst (a catalyst in which Ru is supported on Al ₂ O ₃ ).

The off-gas burner (24) is for treating the exhaust gas of the fuel cell (11) by catalytic combustion. That is, the exhaust gas from the air electrode (12) contains excess air not used for the battery reaction and water vapor generated by the battery reaction. On the other hand, the exhaust gas from the fuel electrode (13) contains hydrogen, unreformed raw fuel, air, and steam that have not been used in the cell reaction. And the off-gas burner (24)
Unreacted hydrogen and unreformed raw fuel contained in the exhaust gas at the fuel electrode (13) are removed by catalytic combustion. Exhaust gas from the off-gas burner (24) is discharged into the atmosphere.

The cogeneration device (10) includes:
A heat recovery circuit (30) configured as a closed circuit and circulating water is provided. This heat recovery circuit (30)
It recovers waste heat from 1) and the reforming section (20) to generate hot water.

The heat recovery circuit (30) includes a hot water storage tank (31)
, A pump (32), a first heat recovery unit (33), a second heat recovery unit (34), and a third heat recovery unit (35) are sequentially connected by piping. The first heat recovery section (33) is provided in the fuel cell (11), and heats water circulating in the heat recovery circuit (30) by waste heat of the fuel cell (11). The second heat recovery section (34) is provided in the reforming section (20), and converts the water circulating in the heat recovery circuit (30) into the fuel reformer (21) in the reforming section (20) and CO conversion. Heating by the waste heat of the vessel (22) and the CO selective oxidizer (23). The third heat recovery section (35) is provided in the off-gas burner (24), and heats water circulating in the heat recovery circuit (30) by heat generated by catalytic combustion in the off-gas burner (24).

That is, the water circulating in the heat recovery circuit (30) flows through the first to third heat recovery sections (33 to 35) sequentially and is gradually heated, for example, becomes hot water of about 80 ° C. and becomes a hot water storage tank ( 31). The hot water stored in the hot water storage tank (31) is appropriately supplied according to hot water supply demand. Further, the hot water storage tank (31) is appropriately supplied with water from a water supply or the like. Further, a pair of hot water pipes (36) is connected to the hot water storage tank (31). This hot water pipe (36) is connected to the hot water storage tank (3
It is for circulating hot water between 1) and the dehumidifier (50).

The cogeneration device (10) is configured to be able to change the ratio of the power output and the heat output of the total output (hereinafter referred to as the thermoelectric ratio). Specifically, the thermoelectric ratio is changed by adjusting the output voltage by the voltage regulator (27). Changing the output voltage changes the fuel utilization. Here, the fuel utilization is a ratio of the amount of hydrogen consumed by the above-described cell reaction to the amount of hydrogen supplied to the fuel cell (11) through the reformed gas supply passage (16).

When the output voltage is reduced, the fuel utilization increases, and the amount of unused hydrogen flowing to the exhaust gas passage (26) decreases. Conversely, when the output voltage is increased, the fuel utilization rate decreases, and the amount of unused hydrogen flowing to the exhaust gas passage (26) increases. That is, when the fuel utilization is changed by adjusting the output voltage, the amount of hydrogen supplied to the off-gas burner (24) changes, and the amount of heat generated by the combustion of hydrogen in the off-gas burner (24) changes. For this reason, when the fuel utilization rate is increased to increase the electric power, the heat decreases, and when the fuel utilization rate is decreased to decrease the electric power, the heat increases, and the thermoelectric ratio can be changed. For example, an operation in which the output of heat is increased is performed in summer or winter, and an operation in which the output of electric power is increased is performed in other intermediate periods.

<< Configuration of Dehumidifier >> As described above, the dehumidifier (50) is installed in the space in the attic of the house (70). An introduction duct (41), an exhaust duct (42), an outlet duct (43), and a suction duct (45) are connected to the dehumidifier (50).

The introduction duct (41) has an inlet end open to the outside and an outlet end connected to the casing of the dehumidifier (50). This introduction duct (41) is
A) is introduced into the dehumidifier (50). The exhaust duct (42)
The inlet end is connected to the casing of the dehumidifier (50), and the outlet end is open to the outside. The exhaust duct (42) guides exhaust air (EA) from the dehumidifier (50) to the outside. The outlet duct (43) has an inlet end connected to the casing of the dehumidifier (50), and an outlet end connected to the outlet (44). The supply air (SA) from the dehumidifier (50) is supplied to the blow duct (43).
The air is sent to the air outlet (44) through the air outlet (44), and is supplied into the room from the air outlet (44) opening to the ceiling (72). Suction duct (45)
Has an inlet end connected to the outlet (44) and an outlet end connected to the casing of the dehumidifier (50). Room air (RA) taken in from the suction opening (46) opening into the ceiling (72)
Is introduced into the dehumidifier (50) through the suction duct (45).

As shown in FIG. 3, the casing of the dehumidifier (50) includes a desiccant rotor (53) as a humidity control section, a sensible heat exchanger (54) as a heat exchange section, and a heating section. A certain reproduction coil (55) is housed. In addition, a first passage (51) and a second passage (52) are defined inside the casing. The first passage (51) communicates with the inlet duct (41) at the inlet end and communicates with the outlet duct (43) at the outlet end. Outdoor air is introduced into the first passage (51) as first air through the introduction duct (41). On the other hand, the second passage (52) communicates with the suction duct (45) at the inlet end,
At the outlet end, it communicates with the exhaust duct (42). Room air is introduced into the second passage (52) as the second air through the suction duct (45). Note that, depending on the specification, the mixed air of the outdoor air and the indoor air may be the first air, and the mixed air of the indoor air and the outdoor air may be the second air.

The desiccant rotor (53) is formed in a disk shape and in a honeycomb shape so that air can pass in the thickness direction. Desiccant rotor (53)
Is provided with an adsorbent. This adsorbent is
Contact with air passing through desiccant rotor (53). The desiccant rotor (53) is provided so as to cross the first passage (51) and the second passage (52). That is, a part of the desiccant rotor (53) is in contact with the first air flowing through the first passage (51), and the remaining part is in contact with the second air flowing through the second passage (52). In addition, desiccant rotor (5
3) is rotationally driven by a motor (not shown).
The adsorbent of the desiccant rotor (53) will be described later.

The sensible heat exchanger (54) is provided on the right side of the desiccant rotor (53) in FIG. That is, the sensible heat exchanger (54) is provided downstream of the desiccant rotor (53) in the first passage (51) and upstream of the desiccant rotor (53) in the second passage (52). . The sensible heat exchanger (54) is connected to the first passage (51)
Heat is exchanged between the first air flowing through the second passage and the second air flowing through the second passage (52).

The regeneration coil (55) is connected to the second passage (5
2) Desiccant rotor (53) and sensible heat exchanger (5)
4) is provided between. The regeneration coil (55) is constituted by a so-called cross-fin type heat exchanger, and is connected to the hot water pipe (36). The regeneration coil (55) is provided between the hot water in the hot water storage tank (31) supplied through the hot water pipe (36) and the second water flowing through the second passage (52).
The second air is heated by exchanging heat with the air.

As described above, the desiccant rotor (53) is provided with an adsorbent. In the present embodiment, xerogel is employed as the adsorbent. Hereinafter, the reason for using xerogel will be described with reference to FIG.
In addition, the water content in FIG. 4 indicates the amount of water that 1 kg of the adsorbent can adsorb.

Zeolite 13X has been widely used as an adsorbent. This zeolite 13
X has a characteristic that the water content increases sharply in a region where the relative humidity is 5% or less, but changes gradually in a region where the relative humidity is 5% or more. Therefore, when attempting to regenerate zeolite 13X, the regeneration temperature is set to 80 ° C.
As described above, it is necessary to reduce the relative humidity of the air for regeneration.

On the other hand, xerogel has a relative humidity of 0%.
In the region of about 80%, the water content changes almost in proportion to the change of the relative humidity. Therefore, when regenerating xerogel, it is not necessary to reduce the relative humidity of the air for regeneration so much, and it is possible to sufficiently regenerate at a regeneration temperature of 70 ° C. or less. Therefore, if xerogel is used as the adsorbent and the second air is heated to about 70 ° C. by heat exchange with the hot water in the regeneration coil (55), the adsorbent can be regenerated.

The adsorbent of the first embodiment is not limited to xerogel, but may be silica gel.
In addition, any adsorbent having the following characteristics can be employed. That is, the difference delta ₁ of moisture content at a relative humidity of 0-20%, the difference in moisture content at 10 to 40% delta ₂
The ratio between, as long as words delta ₂ / delta ₁ is in the range from 0.5 to 1.5, can be employed as the adsorbent of the present embodiment 1. Further, it is most desirable that Δ ₂ / Δ ₁ is around 1.0.

-Operating Operation- The dehumidifying operation of the dehumidifier (50) will be described with reference to FIGS. FIG. 5 shows this dehumidifying operation on the psychrometric chart. In addition, the code | symbols in FIG.3 and FIG.5 respectively correspond. The numerical values shown below are all examples.

The state of the point (temperature 32 ° C., relative humidity 80
%) Of the outdoor air (OA) is sent as the first air into the first passage (51) of the dehumidifier (50) through the introduction duct (41). The first air in the state of the point is the desiccant rotor (5
Sent to 3). In the desiccant rotor (53), moisture contained in the first air is adsorbed by the adsorbent. As a result, the first air changes along the isenthalpy line, and its absolute humidity decreases and its temperature rises to a point state.

The first air in the state of the point is supplied to the first passage (51).
And sent to the sensible heat exchanger (54). In the sensible heat exchanger (54), the first air exchanges heat with the second air. As a result, the first air radiates heat to the second air, and its temperature decreases to a point state (temperature 32 ° C., relative humidity 38%).
Becomes Then, the first air in the state of the point is sent to the outlet (44) through the outlet duct (43) and supplied air (SA).
It is blown out indoors.

On the other hand, the room air (RA) in the state of the point (temperature 26 ° C., relative humidity 50%) passes through the suction duct (45) from the suction port (46), and passes through the second passage of the dehumidifier (50). 52) is sent as the second air. The second air in the point state is
It is sent to the sensible heat exchanger (54). In the sensible heat exchanger (54), the second air absorbs heat from the first air, and its temperature rises to a point state.

The second air in the state of the point is supplied to the second passage (52).
And is sent to the regeneration coil (55). In the regeneration coil (55), the second air is heated by the hot water in the hot water storage tank (31) supplied through the hot water pipe (36). As a result, the temperature of the second air further rises, and the second air is brought into a state of a point.

State of point (temperature 70 ° C., relative humidity 6%)
Is sent to the desiccant rotor (53). In the desiccant rotor (53), the second air contacts the adsorbent. On the other hand, since the desiccant rotor (53) is rotating, the portion of the desiccant rotor (53) that has absorbed moisture from the first air eventually moves toward the second passage (52) and comes into contact with the second air. Due to the contact with the second air, moisture is desorbed from the adsorbent of the desiccant rotor (53), and the adsorbent is regenerated. Due to the moisture release of the adsorbent, the second air changes along the isenthalpy line, and its absolute humidity rises and the temperature falls, and the second air changes to the point state (temperature 47 ° C., relative humidity 30
%). Then, the second air in the state of the point is discharged outside from the exhaust duct (42) as exhaust air (EA).

As described above, in the dehumidifier (50), the temperature of the second air supplied to the desiccant rotor (53) is set at 70 ° C.
Set to ° C. That is, the regeneration temperature of the adsorbent in the desiccant rotor (53) is set to 70 ° C. For this reason, a dehumidifying effect that is equal to or greater than the amount of heating of the regeneration coil (55) to the second air can be obtained.

Specifically, the heating amount in the reproducing coil (55) is represented by Δh1, which is the enthalpy difference between points. On the other hand, the dehumidifying effect is represented by Δh2 which is the enthalpy difference between points. By setting the regeneration temperature of the adsorbent to 70 ° C., Δh2 ≧ Δ
h1 and the COP (Δh2 / Δh1) of the dehumidifying operation can be set to 1 or more.

According to the first embodiment, the humidity control device (50) using the adsorbent is used.
And a cogeneration device (10) to provide a new humidity control system. For this reason,
In the humidity control device (50), the heat required for regeneration of the adsorbent can be covered by the heat output from the cogeneration device (10), while in the cogeneration device (10), the use of the output heat is expanded. can do.
Therefore, a new humidity control system that can complement the problems of the humidity control device (50) and the cogeneration device (10) can be realized.

Further, according to the first embodiment, the dehumidifier (50), which is a humidity control device, enables dehumidification of the room and ventilation of the room. In particular, in the first embodiment, the first air and the second air in the sensible heat exchanger (54) are used.
Heat exchange with air. For this reason, the second air can be heated by the first air whose temperature has increased due to dehumidification, and the amount of heating of the second air in the regeneration coil (55) can be reduced.

In the first embodiment, xerogel is used as the adsorbent, and the adsorbent is regenerated with the second air at about 70 ° C. Accordingly, the adsorbent can be regenerated by the second air having a temperature obtained by supplying the hot water stored in the hot water storage tank (31) of the cogeneration device (10) to the regeneration coil (55). , The COP of the dehumidifying operation can be made 1 or more, and a highly efficient dehumidifying operation can be realized.

-Modification of First Embodiment- In the dehumidifier (50) of the first embodiment, the first air is dehumidified so that the absolute humidity of the first air is lower than the absolute humidity of the room air. In addition, a first humidifying cooler (56) and a second humidifying cooler (57) may be provided.

As shown in FIG. 6, the first humidifying cooler (56)
Is provided downstream of the sensible heat exchanger (54) in the first passage (51). The first humidifier cooler (56) supplies moisture to the first air sent from the sensible heat exchanger (54). In the first humidifying cooler (56), the supplied water takes away latent heat of evaporation, so that the temperature of the first air decreases. The first air cooled by the first humidifier cooler (56) is supplied into the room from the outlet (44) through the outlet duct (43).

The second humidifying cooler (57) is connected to the second passage (52).
At the upstream of the sensible heat exchanger (54).
The second humidifier cooler (57) supplies moisture to the second air sent through the suction duct (45). Second
In the humidifying cooler (57), the supplied moisture takes away latent heat of evaporation, so that the temperature of the second air decreases. The second air cooled by the second humidifying cooler (57) is sent to the sensible heat exchanger (54) and used for cooling the first air.

The dehumidifying operation of the dehumidifier (50) according to the present modification will be described with reference to FIGS. FIG.
Shows this dehumidifying operation on the psychrometric chart.
6 and 7 correspond to each other. The numerical values shown below are all examples.

State of point (temperature 32 ° C., relative humidity 70
%) Of the outdoor air (OA) is sent as the first air into the first passage (51) of the dehumidifier (50) through the introduction duct (41). The first air in the state of the point is the desiccant rotor (5
Sent to 3). In the desiccant rotor (53), moisture contained in the first air is adsorbed by the adsorbent. As a result, the first air changes along the isenthalpy line, and its absolute humidity decreases and its temperature rises to a point state.
In the state of the point, the absolute humidity of the first air is lower than the absolute humidity of the room air in the state of the point.

The first air in the state of the point is supplied to the first passage (51).
And sent to the sensible heat exchanger (54). In the sensible heat exchanger (54), the first air exchanges heat with the second air. As a result, the first air radiates heat to the second air, and the temperature of the first air decreases to a point.

The first air in the point state is sent to the first humidifying cooler (56). The first humidifier cooler (56) supplies moisture to the first air. As a result, the first air changes along the isenthalpy line, and its absolute humidity rises and its temperature drops to the point '(temperature 23 ° C., relative humidity 60 ° C.).
%). Then, the first air in the state of the point 'is sent to the outlet (44) through the outlet duct (43),
It is blown into the room as supply air (SA).

On the other hand, the room air (RA) in the state of the point (temperature 26 ° C., relative humidity 50%) passes through the suction duct (45) from the suction port (46), and passes through the second passage of the dehumidifier (50). 52) is sent as the second air. The second air in the point state is
It is sent to the second humidification cooler (57). 2nd humidification cooler (5
In 7), water is supplied to the second air. As a result, the second air changes along the isenthalpy line, and its absolute humidity rises and its temperature falls to the state of point '.

The second air in the state of the point 'is sent to the sensible heat exchanger (54). In the sensible heat exchanger (54), the second air absorbs heat from the first air, and its temperature rises to a point state.

The second air in the state of the point is supplied to the second passage (52).
And is sent to the regeneration coil (55). In the regeneration coil (55), the second air is heated by the hot water in the hot water storage tank (31) supplied through the hot water pipe (36). As a result, the temperature of the second air further rises, and the second air is brought into a state of a point.

Point condition (temperature 67 ° C., relative humidity 7%)
Is sent to the desiccant rotor (53). In the desiccant rotor (53), the second air contacts the adsorbent. On the other hand, since the desiccant rotor (53) is rotating, the portion of the desiccant rotor (53) that has absorbed moisture from the first air eventually moves toward the second passage (52) and comes into contact with the second air. Due to the contact with the second air, moisture is desorbed from the adsorbent of the desiccant rotor (53), and the adsorbent is regenerated. Due to the moisture release of the adsorbent, the second air changes along the isenthalpy line, and its absolute humidity increases and the temperature decreases, and the second air changes to the point state (temperature 40 ° C, relative humidity 48).
%). Then, the second air in the state of the point is discharged outside from the exhaust duct (42) as exhaust air (EA).

According to this modification, the following effects can be obtained in addition to the effects of the first embodiment. That is, in the present modification, the second air is cooled by the second humidifying cooler (57) and then sent to the sensible heat exchanger (54). For this reason,
First heat exchange with the second air in the sensible heat exchanger (54)
The air can be cooled to lower temperatures. Therefore, the temperature of the first air supplied to the room can be reduced. Further, in this modification, the desiccant rotor (5
The first air radiated by the sensible heat exchanger (54) after being dehumidified in 3) can be supplied to the room after being cooled by the first humidifying cooler (56). For this reason, it is possible to supply not only the humidity but also the temperature of the first air to the room, and it is possible to obtain the indoor dehumidification and the cooling effect.

[0097]

[Embodiment 2] In Embodiment 2 of the present invention, instead of combining Embodiment 1 with a dehumidifier as a humidity controller and a cogeneration device (10), a humidifier as a humidity controller is used. This is a combination of a machine (50) and a cogeneration device (10). The configuration of the cogeneration device (10) according to the second embodiment is the same as that of the first embodiment. Hereinafter, the configuration of the humidifier (50) will be described.

The humidifier (50) is installed in the space in the attic of the house (70), like the dehumidifier of the first embodiment.
The humidifier (50) has an inlet duct (41) and an exhaust duct (4
2), the outlet duct (43) and the suction duct (45) are connected. This is the same as the dehumidifier of the first embodiment (see FIG. 1).

As shown in FIG. 8, the humidifier (50)
The configuration is almost the same as that of the dehumidifier of the first embodiment. That is, the desiccant rotor (53), the sensible heat exchanger (54), and the regeneration coil (55) are housed in the casing of the humidifier (50), and the first passage (51) and the Two passages (52) are defined. Hereinafter, points different from the dehumidifier of the first embodiment will be described.

In the humidifier (50), the first passage (5
1) communicates at the inlet end with the suction duct (45) and at the outlet end with the exhaust duct (42). This first passage (51)
, Room air is introduced as first air through the suction duct (45). On the other hand, the second passage (52) communicates with the introduction duct (41) at the inlet end, and communicates with the outlet duct (43) at the outlet end. Outdoor air is introduced into the second passage (52) through the introduction duct (41) as second air.
Note that, depending on the specification, the mixed air of the indoor air and the outdoor air may be the first air, and the mixed air of the outdoor air and the indoor air may be the second air.

-Operation- The humidification operation of the humidifier (50) will be described with reference to FIGS. FIG. 9 shows this humidifying operation on the psychrometric chart. 8 and 9 correspond to each other. The numerical values shown below are all examples.

State of point (temperature 25 ° C., relative humidity 50
%) Of indoor air (RA) is sent from the suction port (46) through the suction duct (45) to the first passage (51) of the humidifier (50) as first air. The first air in the point state is sent to the desiccant rotor (53). Desiccant rotor (5
In 3), the moisture contained in the first air is adsorbed by the adsorbent. As a result, the first air changes along the isenthalpy line, and its absolute humidity decreases and its temperature rises to a point state.

The first air in the state of the point is supplied to the first passage (51).
And sent to the sensible heat exchanger (54). In the sensible heat exchanger (54), the first air exchanges heat with the second air. As a result, the first air radiates heat to the second air, and the temperature of the first air decreases to a point state (temperature 7 ° C., relative humidity 40%). The first air in the state of the point is the exhaust air (E
As A), it is discharged outside from the exhaust duct (42).

On the other hand, the point state (temperature 1 ° C., relative humidity 7
(0%) of the outdoor air (OA) is sent as the second air into the second passage (52) of the humidifier (50) through the introduction duct (41). The second air in the state of the point is the sensible heat exchanger (54)
Sent to In the sensible heat exchanger (54), the second air
Heat is absorbed from the air, and the temperature rises to a point state.

The second air in the state of the point is supplied to the second passage (52).
And is sent to the regeneration coil (55). In the regeneration coil (55), the second air is heated by the hot water in the hot water storage tank (31) supplied through the hot water pipe (36). As a result, the temperature of the second air further rises, and the second air is brought into a state of a point.

Point condition (temperature 70 ° C., relative humidity 2%)
Is sent to the desiccant rotor (53). In the desiccant rotor (53), the second air contacts the adsorbent. On the other hand, since the desiccant rotor (53) is rotating, the portion of the desiccant rotor (53) that has absorbed moisture from the first air eventually moves toward the second passage (52) and comes into contact with the second air. Due to the contact with the second air, moisture is desorbed from the adsorbent of the desiccant rotor (53), and the second air is humidified while the adsorbent is regenerated. Due to the moisture release of the adsorbent, the second air changes along the isenthalpy line, and its absolute humidity rises and its temperature falls to a point state (55 ° C., 10% relative humidity). Then, the second air in the dot state is sent to the outlet (44) through the outlet duct (43) and is blown into the room as supply air (SA).

-Effects of Second Embodiment- According to the second embodiment, the humidifier (50), which is a humidity control device, can humidify the room and can also ventilate the room. In the humidifier (50), since the moisture of the indoor air discharged to the outside as the first air is adsorbed by the adsorbent, the moisture is collected from the indoor air exhausted with the ventilation, and the collected water is collected by the humidifier. 2 can be applied to air.

In the second embodiment, the first air and the second air exchange heat in the sensible heat exchanger (54). For this reason, the second air can be heated by the first air whose temperature has increased due to dehumidification, and the amount of heating of the second air in the regeneration coil (55) can be reduced. Further, in the sensible heat exchanger (54), it is possible to recover the heat from the room air exhausted with the ventilation and apply it to the second air. Therefore,
According to the second embodiment, moisture and heat can be recovered from the first air discharged outside for ventilation and applied to the second air, and the energy loss associated with ventilation can be further reduced, and energy can be reduced. It is possible to improve the efficiency.

-Modification of Second Embodiment- In the humidifier (50) of the second embodiment, a reheating coil (58) as a reheating unit may be provided.

As shown in FIG. 10, the reheating coil (5
8) is a desiccant rotor (5) in the second passage (52).
It is provided downstream of 3). Reheating coil (58)
Is composed of a so-called cross-fin type heat exchanger, and is connected to the hot water pipe (36). The reheating coil (58) exchanges heat between the hot water in the hot water storage tank (31) supplied through the hot water pipe (36) and the second air flowing through the second passage (52), and converts the second air. Heat.

That is, in the present modified example, the second air (see FIG. 9), whose temperature has been lowered by humidification in the desiccant rotor (53), is heated, and then supplied to the room after the temperature is raised. For this reason, according to this modification, it is possible to obtain a heating effect as well as humidification of the room.

In the humidifier (50) of the second embodiment, an auxiliary humidifier may be provided. For example, when a sufficient amount of humidification cannot be obtained by humidification of the second air in the desiccant rotor (53), an auxiliary humidifier is provided to compensate for the shortage of humidification.

More specifically, the auxiliary humidifier is provided in the second passage (52).
Is provided downstream of the desiccant rotor (53).
A warm water pipe (36) extending from the hot water storage tank (31) is connected to the auxiliary humidifier. Further, the auxiliary humidifier is provided with a moisture permeable membrane, and the hot water in the hot water storage tank (31) flows through one passage defined by the moisture permeable membrane, and the second air flows through the other passage. Then, the moisture passes through the moisture permeable membrane and is supplied to the second air, whereby the second air is humidified.

In the auxiliary humidifier, hot water is directly sprayed on the second air without using a moisture permeable membrane, so that the second
Air humidification may be performed.

[0115]

Embodiment 3 In Embodiment 3 of the present invention, a humidity controller (50) is provided as a humidity controller.
The humidifier (50) has substantially the same configuration as the dehumidifier of the first embodiment and the humidifier of the second embodiment (FIGS. 3 and 8).
) And switching between the dehumidifying operation and the humidifying operation. That is,
The humidifier (50) operates in the same manner as the dehumidifier of the first embodiment during the dehumidifying operation, and operates in the same manner as the humidifier of the second embodiment during the humidifying operation. Hereinafter, points different from the dehumidifier of the first embodiment and the humidifier of the second embodiment will be described.

As shown in FIG. 11, in the humidity controller (50), the inlet ends of the first passage (51) and the second passage (52) are respectively operated by operating a switching valve (not shown) to form a suction duct. (45) and the introduction duct (41). Further, the outlet ends of the first passage (51) and the second passage (52) are configured such that they are switched to the outlet duct (43) and the exhaust duct (42), respectively, by operating a switching valve (not shown). Have been.

As shown in FIG. 11A, during the dehumidifying operation, the first passage (51) has an inlet end communicating with the introduction duct (41) and an outlet end communicating with the outlet duct (43). Also,
The second passage (52) has an inlet end communicating with the suction duct (45) and an outlet end communicating with the exhaust duct (42). In this state, the same operation as the dehumidifying operation of the dehumidifier of the first embodiment is performed. That is, outdoor air is taken into the first passage (51) through the introduction duct (41) as first air, and room air is taken into the second passage (52) as second air through the suction duct (45). Then, the first air after dehumidification is supplied into the room from the outlet duct (43) and the outlet (44), and the second air used for regeneration of the desiccant rotor (53) is discharged from the exhaust duct (42) to the outside of the room. .

On the other hand, as shown in FIG. 11B, during the humidifying operation, the first passage (51) has an inlet end communicating with the suction duct (45) and an outlet end communicating with the exhaust duct (42). I do. The second passage (52) has an inlet end at the introduction duct (4).
The outlet end communicates with the outlet duct (43).
In this state, the same operation as the humidification operation in the humidifier of the second embodiment is performed. That is, indoor air is taken into the first passage (51) as the first air through the suction duct (45),
The outdoor air is taken into the second passage (52) as the second air through the introduction duct (41). Then, the first air having moisture added to the desiccant rotor (53) is discharged from the exhaust duct (42) to the outside of the room, and the humidified second air is discharged to the blowing duct (4).
3) And supply indoors from the outlet (44).

As described above, the humidity controller (5
0) performs the same operation as the dehumidifier of Embodiment 1 during the dehumidification operation. That is, by the contact with the desiccant rotor (53), the relative humidity of the first air decreases from 80% to 6%, while the relative humidity of the second air decreases from 6% to 30%.
(See FIG. 5). The humidity controller (50)
At the time of the humidification operation, the same operation as that of the humidifier of the second embodiment is performed. That is, due to the contact with the desiccant rotor (53), the relative humidity of the first air decreases from 50% to 6%, while the relative humidity of the second air increases from 6% to 10% (see FIG. 9). ).

On the other hand, in the third embodiment,
A xerogel having predetermined characteristics is adsorbed in the same manner as in Embodiment 1.
Used as In addition, similar to the first embodiment, the system
Rica gel may be used as an adsorbent, and furthermore, a relative humidity of 0
Difference in moisture content at 20% Δ ₁And at 10-40%
Water content difference Δ_Two, Ie Δ_Two/ Δ₁Is from 0.5
Substances in the range up to 1.5 may be used as the adsorbent (see FIG. 4).
See).

The following effects can be obtained by using a substance having the above characteristics including xerogel as an adsorbent. In other words, the substance such as xerogel, even if the relative humidity of the air contacting it changes over a wide range,
As the relative humidity of the air changes, the water content of the substance changes relatively large. For this reason, it is configured to perform both the dehumidifying operation and the humidifying operation as in the third embodiment,
Even when the relative humidity of the air in contact with the desiccant rotor (53) varies over a wide range, the adsorption of moisture to the adsorbent of the desiccant rotor (53) and the desorption of moisture from the adsorbent can be ensured. It can be carried out. As a result, the amount of the adsorbent required for the dehumidifying operation can be substantially equal to the amount of the adsorbent required for the dehumidifying operation, and the desiccant rotor (53) can be reduced in size.

[0122]

Fourth Embodiment A fourth embodiment of the present invention is a combination of the humidity control system of the third embodiment and an air conditioner (60). That is, the fourth embodiment includes a humidity controller (50) for performing dehumidification and humidification, and a cogeneration device (1).
0) and an air conditioner (60). The humidity control system according to the fourth embodiment is configured as an air conditioning system that performs both indoor temperature control and humidity control.

As shown in FIG. 12, the air conditioner (60)
Has an outdoor unit (61) and an indoor unit (62). The outdoor unit (61) is installed outdoors. The indoor unit (62)
Along with the humidity controller (50), it is installed in the attic of a house (70). Specifically, the indoor unit (62) is
3) Connected in the middle. The indoor heat exchanger (63) is housed in the indoor unit (62). Indoor heat exchanger (63)
Is connected to the outdoor unit (61) via the refrigerant pipe (64), and constitutes a refrigerant circuit in which the refrigerant circulates. The indoor heat exchanger (63) exchanges heat between the air supplied into the room through the outlet duct (43) and the refrigerant in the refrigerant circuit.

In the above air conditioning system, the dehumidifying operation of the humidity controller (50) and the cooling operation of the air conditioner (60) are performed simultaneously. The first air dehumidified by the humidity controller (50) is sent to the indoor unit (62) through the outlet duct (43). In the air conditioner (60), the refrigerant circulates through the refrigerant circuit to perform a refrigeration cycle operation, and the indoor heat exchanger (63) functions as an evaporator. In the indoor unit (62), the dehumidified first air is cooled while passing through the indoor heat exchanger (63). Then, the cooled first air flows through the outlet duct (43) again and is supplied into the room from the outlet (44).

Here, in the air conditioner (60) of the fourth embodiment, the evaporation temperature of the refrigerant during the cooling operation is set to a higher temperature than a general one. That is, in the general air conditioner (60), since it is necessary to condense moisture and dehumidify at the same time as cooling the air, the refrigerant evaporation temperature during the cooling operation is set to be lower than the dew point temperature of the air. . On the other hand, in the fourth embodiment, since the first air is dehumidified by the humidity controller (50), it is not necessary to dehumidify the air conditioner (60). Therefore, the refrigerant evaporation temperature during the cooling operation can be set higher than the dew point temperature of the air.

In the air conditioning system, the humidity controller (5
The humidifying operation 0) and the heating operation of the air conditioner (60) are performed simultaneously. The second air humidified by the humidity controller (50) is sent to the indoor unit (62) through the blow duct (43). In the air conditioner (60), the refrigerant circulates through the refrigerant circuit to perform a heat pump cycle operation, and the indoor heat exchanger (63) functions as a condenser. In the indoor unit (62), the humidified second air is heated while passing through the indoor heat exchanger (63). Then, the heated second air flows through the outlet duct (43) again and is supplied into the room from the outlet (44).

-Effects of Fourth Embodiment- According to the fourth embodiment, the indoor temperature and humidity can be appropriately adjusted, and the comfort of the occupants can be surely improved.

According to the fourth embodiment, as described above, the refrigerant evaporation temperature during the cooling operation in the air conditioner (60) can be set high. Therefore, the COP in the refrigeration cycle operation can be improved, and the efficiency of the air conditioner (60) can be increased. Furthermore, drain water is not generated in the indoor heat exchanger (63), and the drain water does not need to be treated, so that the configuration of the air conditioner (60) can be simplified.

-Modification of Embodiment 4- In Embodiment 4 described above, the indoor unit (62) of the air conditioner (60) is provided in the middle of the blow-out duct (43), and the indoor heat exchanger (63) controls the humidity. Although the first air dehumidified by the machine (50) is cooled, the following configuration may be used instead. That is, the indoor unit (62) may be installed in the indoor space, and the captured indoor air may be cooled in the indoor heat exchanger (63).

In this case, since the first air dehumidified by the humidity controller (50) is supplied to the room, the room air is maintained at a low humidity. Therefore, even if the indoor air is cooled in the indoor heat exchanger (63), generation of drain water is avoided.

In the fourth embodiment, the air conditioner (6
In (0), both the refrigeration cycle operation and the heat pump cycle operation are performed by switching, but the following configuration may be used instead. That is, the air conditioner (6
In (0), while only the refrigeration cycle operation is performed, heating may be performed using hot water in the hot water storage tank (31) in the cogeneration device (10).

In this case, for example, a heat exchanger connected to the hot water storage tank (31) is separately provided in the middle of the blow-out duct (43).
What is necessary is just to supply warm water to this heat exchanger and to heat air.
Alternatively, a pipe through which hot water flows may be buried in the floor of the house (70), and the floor may be heated by flowing hot water through the pipe.

[0133]

Fifth Embodiment A fifth embodiment of the present invention is an application of the air conditioning system of the fourth embodiment to a building (71). Hereinafter, points different from the fourth embodiment will be described.

As shown in FIG. 13, the cogeneration device (10) and the outdoor unit (61) of the air conditioner (60) are installed on the roof of a building (71). On the other hand, the humidity controller (50) and the indoor unit (62) of the air conditioner (60) are installed in the space above the ceiling on each floor. The hot water storage tank (31) of the cogeneration device (10) is connected to a humidity controller (50) on each floor by a hot water pipe (36). The ceiling (72) of each floor is provided with a plurality of outlets (44), and the outlet duct (43) is branched at the outlet end and connected to each outlet (44). The outdoor unit (61) is connected to the indoor unit (62) on each floor by a refrigerant pipe (64).

Further, the indoor unit (62) of the fifth embodiment includes an indoor heat exchanger (63), an indoor fan (65), and an inside air inlet (66) that opens into the room. This indoor unit (6
2) is the air sent from the humidity controller (50) and the inside air inlet (6
The mixed air with the indoor air taken in from 6) is sent to the indoor heat exchanger (63).

The operation of the fifth embodiment is the same as that of the fourth embodiment. That is, while performing the dehumidifying operation simultaneously with the cooling operation, the humidifying operation is performed simultaneously with the heating operation.

-Variation of Embodiment 5- In Embodiment 5 described above, the humidity controller (50) is provided on each floor, but the following configuration may be used instead. That is, as shown in FIG. 14, one humidity controller (50) is installed on the roof of the building (71), and the suction port (46) and the indoor unit (62) of each floor are connected to the roof humidity controller (50). ) May be connected by a duct. In this case, the suction duct (45) branches off at the inlet end and the suction port (4
6) Connected to. The outlet duct (43) branches off at the outlet end and is connected to the indoor heat exchanger (63) on each floor.

[0138]

Other Embodiments of the Invention In each of the above embodiments,
Cogeneration device (10) using fuel cell (11)
However, instead of this, the cogeneration device (10) may be configured by using a gas engine or a gas turbine. That is, fuel may be supplied to a gas engine or the like, and a generator may be driven by the gas engine or the like to generate electric power, and waste heat of the gas engine or the like may be output as warm heat.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a humidity control system according to a first embodiment.

FIG. 2 is a schematic configuration diagram of a cogeneration device according to the first embodiment.

FIG. 3 is a schematic configuration diagram of a dehumidifier according to the first embodiment.

FIG. 4 is a relationship diagram between relative humidity and water content for explaining selection of an adsorbent in the dehumidifier according to the first embodiment.

FIG. 5 is an air line diagram showing a dehumidifying operation of the dehumidifier according to the first embodiment.

FIG. 6 is a schematic configuration diagram of a dehumidifier according to a modification of the first embodiment.

FIG. 7 is an air line diagram showing a dehumidifying operation of a dehumidifier according to a modification of the first embodiment.

FIG. 8 is a schematic configuration diagram of a humidifier according to a second embodiment.

FIG. 9 is an air line diagram showing a humidifying operation of the humidifier according to the first embodiment.

FIG. 10 is a schematic configuration diagram of a humidifier according to a modification of the second embodiment.

FIG. 11 is a schematic configuration diagram of a humidity controller according to Embodiment 3.

FIG. 12 is an overall configuration diagram of an air conditioning system according to a fourth embodiment.

FIG. 13 is an overall configuration diagram of an air conditioning system according to a fifth embodiment.

FIG. 14 is an overall configuration diagram of an air conditioning system according to a modification of the fifth embodiment.

[Explanation of symbols]

 (10) Cogeneration unit (11) Fuel cell (20) Reforming unit (50) Humidity control unit (53) Desiccant rotor (humidity control unit) (54) Sensible heat exchanger (heat exchange unit) (55) Regeneration Coil (heating unit) (56) 1st humidification cooler (1st humidification cooling unit) (57) 2nd humidification cooler (2nd humidification cooling unit) (58) Reheating coil (reheating unit)

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shuji Ikegami 1304 Kanaokacho, Sakai City, Osaka Daikin Industries Inside Kanaoka Factory of Sakai Seisakusho Co., Ltd. (72) Inventor Yuji Watanabe 1304 Kanaokacho, Sakai City, Osaka Daikin Industries, Ltd. Inside the Sakai Plant Kanaoka Plant (72) Inventor Kazuo Yonemoto 1304 Kanaokacho, Sakai City, Osaka Daikin Industries, Ltd.F-term in the Sakai Plant Kanaoka Plant (Reference) 3L053 BC03 BC09 3L055 AA03 BA04 CA02 CA10 4D052 AA08 BA04 CB01 DA01 DA06 DB01 FA04 FA05 GA01 GA03 GB01 GB02 GB03 GB08 GB11 HA01 HA03 HB02

Claims (14)

[Claims] 1. A cogeneration device (10) for supplying electric power and heat by supplying fuel, and a humidity control device (50) for adjusting the humidity of air taken in and then supplying the air to a room. On the other hand, the humidity control device (50) includes a humidity control unit (53) that includes an adsorbent and performs moisture absorption from the first air and moisture release to the second air.
A heating unit (55) for heating the second air by the heat output from the cogeneration device (10) and supplying the second air to the humidity control unit (53) in order to regenerate the adsorbent of the humidity control unit (53); The first air or the second air flowing out of the humidity control section (53).
A humidity control system that supplies air indoors. 2. The humidity control system according to claim 1, wherein the cogeneration device (10) comprises: a fuel cell (11);
A reformer (20) for supplying hydrogen generated by the reforming of the fuel to the fuel cell (11) to generate power by the fuel cell (11); 20) A humidity control system that outputs either or both waste heats as heat. 3. The humidity control system according to claim 1, wherein the humidity control device (50) takes in at least the outdoor air as the first air and at least the room air as the second air. A humidity control system for supplying the first air flowing out of the air conditioner to the room and discharging the second air flowing out of the humidity control unit to the outside of the room. 4. The humidity control system according to claim 3, wherein the humidity control section (53) of the humidity control device (50) controls the first air so that the absolute humidity of the first air is equal to or lower than the absolute humidity of the room air. Humidity control system for dehumidifying. 5. The humidity control system according to claim 3, wherein the humidity control device (50) includes a first air flowing out of the humidity control unit (53) and a second air sent to the heating unit (55). A humidity control system including a heat exchange unit (54) for exchanging heat with heat. 6. The humidity control system according to claim 4, wherein the humidity control device (50) controls the first humidity so that the absolute humidity of the first air is lower than the absolute humidity of the room air in the humidity control unit (53).
A humidity control system comprising a first humidification cooling unit (56) for cooling the first air dehumidified in the humidity control unit (53) while humidifying the first air while supplying the air to the room. . 7. The humidity control system according to claim 4, 5 or 6, wherein the humidity control device (50) cools the second air by humidifying and then supplies the second air to the heat exchange unit (54). (2) A humidity control system including a humidifying cooling unit (57). 8. The humidity control system according to claim 1, wherein the humidity control device (50) takes in at least room air as first air and at least takes out outdoor air as second air. A humidity control system that supplies the second air that has flowed out of 53) into the room and discharges the first air that has flowed out of the humidity control section (53) to the outside of the room. 9. The humidity control system according to claim 8, wherein the humidity control device (50) heats the first air flowing out of the humidity control unit (53) and the second air sent to the heating unit (55). A humidity control system equipped with a heat exchange unit (54) to be exchanged. 10. The humidity control system according to claim 9, wherein the humidity control device (50) heats the second air humidified in the humidity control portion (53) by the heat output from the cogeneration device (10). Humidity control system equipped with a re-heating unit (58) for supplying indoors. 11. The humidity control system according to any one of claims 3 to 10, wherein the humidity control device (50) supplies the first air flowing out of the humidity control unit (53) to a room and supplies the first air to the room. A dehumidifying operation for discharging the second air flowing out of the room (53) to the outside of the room, supplying the second air flowing out of the humidity control unit (53) to the room, and discharging the first air flowing out of the room for the humidity (53) A humidity control system that switches between humidifying operation and discharge to the air. 12. The humidity control system according to claim 1, wherein the adsorbent of the humidity control section (53) has a relative humidity of 0% in the air contacting with the adsorbent. The ratio of the water content difference between the water content when the relative humidity of the air is 10% and the water content when the relative humidity of the air is 40% with respect to the water content difference between the water content in the case of 20% and the water content in the case of 20% is 0.5 or more 1.5
A humidity control system comprising: 13. The humidity control system according to claim 12, wherein the adsorbent of the humidity control section (53) is composed of xerogel or silica gel. 14. The humidity control system according to claim 3, wherein one or both of room air and the first air dehumidified by the humidity control device (50) is taken in, and a refrigeration cycle is performed. A humidity control system equipped with an air conditioner (60) that cools air taken in by exchanging heat with a refrigerant and supplies the cooled air to the room for cooling.