JP3902613B2 - Cogeneration system, cogeneration system control method, and building - Google Patents

Description

  The present invention relates to a cogeneration system, a cogeneration system control method, and a building that can immediately dehumidify an air-conditioned space even when no amount of heat is generated when it is necessary to dehumidify the air-conditioned space. In particular, the present invention relates to a cogeneration system, a cogeneration system control method, and a building in which a desiccant agent of a desiccant air conditioner is dehumidified in advance when a dehumidification demand determination unit calculates that the amount of heat necessary for dehumidification is insufficient.

In a distributed power source using a cogeneration apparatus, waste heat accompanying power generation of the cogeneration apparatus is accumulated in, for example, a hot water storage tank, and electric power and hot water are provided. In addition, there is a system that includes an air conditioner that dehumidifies air using a hygroscopic agent and regenerates the hygroscopic agent using exhaust heat of a cogeneration device (see, for example, Patent Document 1).
JP 2003-279069 A

  However, in the conventional distributed power source, the cogeneration apparatus of each house generates power according to the power consumed by each house, and generates electric power and hot water. For this reason, excessive warm water will be produced | generated in the period when there is much usage-amount of electric power with respect to the usage-amount of warm water, for example. Conversely, when the amount of electric power used is less than the amount of hot water used, the hot water is insufficient. For this reason, it was not possible to cope with a wide variation in load.

  Moreover, since the capacity of the hot water storage tank which a house has is limited, the hot water which cannot be stored in a hot water storage tank was wasted. In addition, it is not preferable to move hot water from a cogeneration device installed far away in case of a shortage of hot water, because the facility becomes complicated and heat loss occurs.

  In addition, an air conditioner that dehumidifies air using a hygroscopic agent cannot immediately dehumidify air when no amount of heat is generated.

In order to solve such a problem, the cogeneration system according to the first embodiment of the present invention dehumidifies the air-conditioned space using a cogeneration device that generates electric power and heat, and the heat generated by the cogeneration device. Whether the amount of heat required for dehumidification of the air-conditioned space is insufficient within a specified period based on the history of power consumption of the desiccant air conditioner and the power load that consumes the power generated by the cogeneration system, and the current humidity A desiccant air conditioner for determining whether or not the desiccant air conditioner includes an evaporative cooler that cools air supplied from the air-conditioned space and air supplied from outside the air-conditioned space, and air supplied from the air-conditioned space. Made by a sensible heat exchanger that exchanges heat with air supplied from outside the air-conditioned space and a cogeneration system A heater that heats the air supplied from the air-conditioned space using the amount of heat generated, and a dehumidifier that dehumidifies the desiccant with the air supplied from the air-conditioned space and dehumidifies the air supplied from outside the air-conditioned space with the desiccant. And a regeneration outside air introduction path for introducing air from outside the air-conditioned space and supplying it to the heater, supplied from the air-conditioned space, cooled by the evaporative cooler, heated by the sensible heat exchanger and heater, and desiccant agent The dehumidified air is discharged outside the air-conditioned space, supplied from outside the air-conditioned space, dehumidified by the dehumidifier, and cooled by the sensible heat exchanger and evaporative cooler, and supplied to the air-conditioned space. When it is determined that the amount of heat necessary for dehumidification is insufficient, the amount of heat supplied to the heater is increased, and the air supplied from the air-conditioned space and the air introduced from outside the air-conditioned space through the regeneration external air introduction path are added by the heater. And by dehumidifying desiccant agent, while performing dehumidification of the air conditioning space, in advance accumulates dehumidified desiccant agent. For this reason, when the dehumidification of the air-conditioned space is required, even if the amount of heat is not generated, the air-conditioned space can be immediately dehumidified.

Also, desiccant air-conditioning apparatus, provided with a plurality, dehumidify the respective different air-conditioned space, the cogeneration system is provided with a plurality, supplies heat to the different desiccant air-conditioning system, respectively, a plurality of the cogeneration system The power generation path further includes a power supply path that can supply the power generated to the power load, and a control unit that controls the power generation amount of the cogeneration apparatus. The control unit dehumidifies the air-conditioned space with a higher dehumidification demand. A cogeneration device capable of supplying heat to the desiccant air conditioner is driven.

  A plurality of cogeneration devices are provided, and the amount of heat is supplied to different desiccant air conditioners, so that it is possible to cope with a wide range of loads. In addition, since the control unit drives a cogeneration device that can supply heat to a desiccant air conditioner that dehumidifies the air-conditioned space with greater dehumidification demand, the amount of heat is transferred from the cogeneration device installed far away by hot water, etc. As compared with the case, the amount of heat can be more easily supplied to the desiccant air conditioner.

Also, further comprising a water heater for heating the water using the surplus power produced by the cogeneration system, the control unit by increasing the output of the cogeneration system, the predetermined power generation efficiency of the cogeneration system Cogeneration when the heat generation efficiency can be higher than the amount of heat necessary for dehumidification by the desiccant air conditioner compared to the amount of heat generated by the cogeneration unit according to the power generated by the cogeneration unit While increasing the output of the apparatus and driving the hot water supply apparatus using surplus power, the desiccant air conditioner further dehumidifies using the amount of heat generated by the hot water supply apparatus.

  The control unit can increase the power generation efficiency of the cogeneration device by increasing the output of the cogeneration device, and dehumidification by the desiccant air conditioner compared to the power generated by the cogeneration device. When the amount of heat necessary for this is insufficient, the output of the cogeneration device is increased and the hot water supply device is driven using surplus power, so that the output efficiency of the cogeneration device can be increased in advance.

The control unit further increases the output of the cogeneration apparatus in advance on the condition that the dehumidification demand determination unit determines that the amount of heat is insufficient with respect to the dehumidification demand. For this reason, it is possible to prevent waste of heat generated by the cogeneration apparatus .

  A hot water storage tank for storing hot water heated by the cogeneration apparatus and the hot water supply apparatus and a hot water storage hot water supply passage for supplying hot water stored in the hot water storage tank to the desiccant air conditioner are further provided. If the dehumidification demand determination unit determines that this occurs, the excess heat is temporarily stored as hot water in the hot water tank, and stored in the hot water tank when dehumidification demand occurs. The amount of heat is supplied from the hot water to the desiccant air conditioner, and the desiccant air conditioner dehumidifies using the hot water supplied from the hot water storage hot water supply path.

Also, the control unit, when the demand determining unit dehumidification excess heat occurs determines, if it can not further accumulated hot water in the hot water storage tank, it is determined whether it is possible to further dehumidifying the desiccant agent, a desiccant agent In addition, the desiccant agent is dehumidified using the surplus amount of heat on the condition that it can be dehumidified, and when the demand for dehumidification occurs thereafter, the desiccant agent previously dehumidified is used to dehumidify the air-conditioned space.

  When the dehumidification demand determination unit determines that a surplus of heat occurs, the control unit uses the surplus heat amount on the condition that hot water cannot be further accumulated in the hot water storage tank and the desiccant agent cannot be further dehumidified. The space is dehumidified in advance to a humidity lower than the target humidity.

Also, further comprising: a home determining section for determining whether a home during dehumidifying demand determining unit further, when the home determination unit determines that it is in home, when it is judged not to be the home in As compared with, it is determined whether or not the amount of heat is insufficient, assuming that a larger amount of heat is required for dehumidification. For this reason, it is possible to prevent wasteful generation of heat when absent.

Also, further comprising a history management unit for managing the consumption history of hot water, dehumidifying demand determining section is further stored in the hot hot water consumption history managed by the history management unit, and the hot water tank It is determined whether or not the amount of heat is insufficient based on the amount of stored hot water. For this reason, it can be judged more appropriately whether the amount of heat is insufficient.

A home determination unit that determines whether or not the user is at home, and the history management unit determines whether the home determination unit determines that the user is at home or if the user is not at home. In the case of managing the history of consumption of hot water, if the dehumidification demand determination unit is determined to be at home by the at-home determination unit, using the history at home managed by the history management unit, If it is determined whether the hot water is insufficient and the home determination unit determines that it is not at home, whether or not the amount of heat is insufficient using the non-home history managed by the history management unit Judging. For this reason, it is possible to correctly determine whether or not the hot water is insufficient in each case of absence and at home.

The home determination unit detects the lock information of the lock provided on the door of the residence, determines that it is not at home when locked from the outside of the residence, and is locked or locked from the inside of the residence If you are at home.

The desiccant air conditioner dehumidifies the desiccant using the regeneration outside air introduction path when only dehumidifying the desiccant without dehumidifying the air-conditioned space. For this reason, a desiccant agent can be dehumidified beforehand, without performing dehumidification in an air-conditioned space.

A building according to another aspect of the present invention includes a cogeneration device that generates electric power and heat, an air conditioning space, a desiccant air conditioning device that dehumidifies the air conditioning space using the heat generated by the cogeneration device, and a cogeneration device. Dehumidification demand determination that determines whether the amount of heat required for dehumidification of the airspace is insufficient within a predetermined period based on the history of power consumption of the power load that consumes the power generated by the current and the current humidity The desiccant air conditioner is supplied from the outside of the air-conditioned space, the evaporative cooler that cools the air supplied from the air-conditioned space and the air supplied from outside the air-conditioned space, and the air supplied from the air-conditioned space. Air supplied from the air-conditioned space using the sensible heat exchanger that exchanges heat with the air and the heat generated by the cogeneration system A heater to be heated, a desiccant agent to be dehumidified by air supplied from the air-conditioned space, a dehumidifier to dehumidify air supplied from outside the air-conditioned space, and air is introduced from outside the air-conditioned space and supplied to the heater The air is supplied from the air-conditioned space, cooled by the evaporative cooler, heated by the sensible heat exchanger and the heater, and the air dehumidified with the desiccant is discharged out of the air-conditioned space. When air supplied from outside the space, dehumidified by the dehumidifier, and cooled by the sensible heat exchanger and evaporative cooler is supplied to the air-conditioned space, the dehumidification demand determination unit determines that the amount of heat necessary for dehumidification is insufficient. The air supplied from the air-conditioned space and the air introduced from outside the air-conditioned space through the regeneration air introduction path are heated by the heater to dehumidify the desiccant agent. While performing the dehumidifying space in advance accumulates dehumidified desiccant agent.

Also, desiccant air-conditioning apparatus, provided with a plurality, dehumidify the respective different air-conditioned space, the cogeneration system is provided with a plurality, supplies heat to the different desiccant air-conditioning system, respectively, a plurality of the cogeneration system The power generation path further includes a power supply path that can supply the power generated to the power load, and a control unit that controls the power generation amount of the cogeneration apparatus. The control unit dehumidifies the air-conditioned space with a higher dehumidification demand. A cogeneration device capable of supplying heat to the desiccant air conditioner is driven.

Also, further comprising a water heater for heating the water using the surplus power produced by the cogeneration system, the control unit by increasing the output of the cogeneration system, the predetermined power generation efficiency of the cogeneration system When the amount of heat required for dehumidification by the desiccant air conditioner is insufficient compared to the power generated by the cogeneration system, the output of the cogeneration system is increased and surplus power is used. Drive the water heater.

  The control unit further increases the output of the cogeneration apparatus in advance on the condition that the dehumidification demand determination unit determines that the amount of heat is insufficient with respect to the dehumidification demand.

  The desiccant air conditioner dehumidifies the desiccant using the regeneration outside air introduction path when only dehumidifying the desiccant without dehumidifying the air-conditioned space.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  According to the present invention, it is possible to immediately dehumidify the air-conditioned space even when no heat is generated when it is necessary to dehumidify the air-conditioned space.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the claimed invention, and all the combinations of features described in the embodiments are not included in the invention. It is not always essential for development means.

  FIG. 1 shows an example of the configuration of a cogeneration system according to an embodiment of the present invention. An object of the present embodiment is to provide a cogeneration system that can immediately dehumidify an air-conditioned space even when no amount of heat is generated when it is necessary to dehumidify the air-conditioned space.

  The cogeneration system 30 supplies electric power and heat to an apartment house that is a building including a plurality of houses (110a to 110c, hereinafter collectively referred to as 110), for example. Here, the apartment house may be one in which a plurality of residences 110 are provided in one building, and each of a plurality of buildings provided in different areas may be the residence 110.

  Moreover, the residence 110b and the residence 110c have the same component as the residence 110a. By identifying the constituent elements of the dwelling 110b and dwelling 110c with the symbols b and c at the end of each constituent element, the dwelling 110 is identified.

  The cogeneration system 30 includes a plurality of fuel cells (40a to 40c, hereinafter collectively referred to as 40), a plurality of power loads (44a to 44c, hereinafter collectively referred to as 44), and a plurality of hot water supply devices (48a to 48c, hereinafter). 48), a plurality of hot water storage tanks (42a to 42c, hereinafter collectively referred to as 42), a plurality of heat loads (68a to 68c, hereinafter referred to as 68), and a plurality of desiccant air conditioners (56a to 56c). , Hereinafter collectively referred to as 56), a plurality of history management units (60a to 60c, hereinafter collectively referred to as 60), a plurality of at-home determination units (62a to 62c, hereinafter collectively referred to as 62), and a plurality of dehumidification demand determinations. Part (54a-54c, generically referred to as 54 below) and a plurality of hot water storage hot water supply passages (52a-52c, generically referred to as 52 below).

  The cogeneration system 30 further includes a control unit 50 and a power supply path 58.

  The cogeneration system 30 further includes air-conditioned spaces (120a to 120c, hereinafter collectively referred to as 120) of the plurality of residences 110. By adding the same codes a to c as the end of the code of the corresponding residence 110 to the end of the code of each of the plurality of air-conditioned spaces 120, it is determined which of the dwellings 110 is the air-conditioned space associated with Identify.

  In addition, the cogeneration system 30 includes an internal temperature and humidity meter (63a to 63c, hereinafter collectively referred to as 63) that measures the temperature and humidity inside each of the plurality of conditioned spaces 120, and the plurality of conditioned spaces 120. External thermometers (64a to 64c, hereinafter collectively referred to as 64) for measuring the external temperature and humidity are further provided. Any of the air-conditioned spaces can be obtained by adding the same symbols a to c at the end of the symbols of the plurality of internal thermometers 63 and the plurality of external thermometers 64, respectively. 120 is identified.

  Hereinafter, the operation of each component of the residence 110a, the internal temperature / humidity meter 63a, and the external temperature / humidity meter 64a will be described. In the present embodiment, the fuel cell 40a is provided in the residence 110a and supplies the generated heat quantity to the desiccant air conditioner 56a. The fuel cell 40a is connected to the power supply path 58, and the power generated by the fuel cell 40a can be supplied to any power load 44a and the hot water supply device 48a via the power supply path 58. Thus, since the fuel cell 40 is provided with two or more, it can respond to the wide fluctuation | variation of load.

  The fuel cell 40a is, for example, a polymer electrolyte fuel cell (PEFC). The fuel cell 40a may be one that reforms city gas, propane gas, or the like supplied to each residence to generate hydrogen gas as fuel, and uses hydrogen gas supplied from the outside as fuel. It may be a thing.

  The hot water supply device 48a supplies hot water heated using the electric power generated by the fuel cell 40a to the desiccant air conditioner 56a or the hot water storage tank 42a.

  The hot water storage tank 42a stores hot water heated by the heat generated in the fuel cell 40a and hot water heated by the hot water supply device 48a. The hot water tank 42a supplies hot water to the heat load 68a and the desiccant air conditioner 56a. Moreover, the hot water storage tank 42a provides the stored hot water to the desiccant air conditioner 56a via the hot water storage hot water supply path 52a.

  The desiccant air conditioner 56a dehumidifies the air-conditioned space 120a using hot water supplied from at least one of the fuel cell 40a, the hot water supply device 48a, or the hot water storage tank 42a. Since the desiccant air conditioner 56a dehumidifies the air-conditioned space 120a using exhaust heat generated when the fuel cell 40a generates power, an efficient air-conditioning system can be configured.

  The power load 44a is operated by the power generated by the fuel cell 40. The heat load 68a consumes the heat supplied from the hot water tank 42a.

  The internal temperature / humidity meter 63a is installed inside the air-conditioned space 120a and detects the temperature and humidity inside the air-conditioned space 120a. The external temperature / humidity meter 64a is installed outside the air-conditioned space 120a and detects the temperature and humidity outside the air-conditioned space 120a.

  The home determination unit 62a determines whether or not the user is at home. The home determination unit 62a detects, for example, the lock information of the lock provided on the door of the residence 110a, and determines that the home is not home when locked from the outside of the residence 110a, or the inside of the residence 110a. If you are locked from the home. Further, the at-home determination unit 62a may detect whether or not the user is at home by detecting a fluctuation amount of power consumption or heat consumption. For example, it may be assumed that the user is at home when the fluctuation amount of power consumption is larger than a predetermined reference amount, and the user is not at home when the fluctuation amount of power consumption is equal to or less than a predetermined reference amount.

  The history management unit 60a manages the history of consumption and power consumption of hot water. For example, the history management unit 60a calculates the sum of the amount of hot water supplied from the hot water tank 42a, the amount of hot water supplied from the fuel cell 40a to the desiccant air conditioner 56a, and the amount of hot water supplied from the hot water supply device 48a to the desiccant air conditioner 56a. Detect and manage as hot water consumption. The history management unit 60a detects and manages the power generated by the fuel cell 40a as power consumption. Further, when the power load 44a consumes power generated by the fuel cells 40 other than the fuel cell 40a, the power consumed by the power load 44a may be detected and managed as power consumption.

  Further, the history management unit 60a divides the day into hourly time zones, and manages the history of consumption and power consumption of hot water in each time zone.

  In addition, the history management unit 60a may manage the amount and temperature of warm water as the consumption of warm water. That is, a product obtained by multiplying the hot water temperature of the hot water storage tank 42a by the hot water temperature and the volume of the hot water supplied from the hot water storage tank 42a is detected as the amount of hot water supplied from the hot water storage tank 42a. Further, the fuel cell 40a supplies the desiccant air conditioner 56a to the temperature of the hot water supplied from the desiccant air conditioner 56a to the hot water tank 42a from the temperature of the hot water supplied to the desiccant air conditioner 56a by the fuel cell 40a. Multiplying the volume of the hot water is detected as the amount of hot water that the fuel cell 40a supplies to the desiccant air conditioner 56a. Further, the hot water supply device 48a supplies the desiccant air conditioner 56a to the temperature of the hot water supplied from the desiccant air conditioner 56a to the hot water tank 42a by the temperature of the hot water supplied to the desiccant air conditioner 56a by the hot water supply device 48a. The hot water volume multiplied by the hot water is detected as the amount of hot water supplied from the hot water supply device 48a to the desiccant air conditioner 56a.

  Further, the history management unit 60a manages the history of consumption of hot water and the history of power consumption in each of the case where the home determination unit 62a determines that the user is at home and the case where it is determined that the user is not at home. To do.

  The history management unit 60a may manage the history for each humidity inside the air-conditioned space 120a, for each temperature inside the air-conditioned space 120a, for every humidity outside the air-conditioned space 120a, and for every temperature outside the air-conditioned space 120a.

  When the dehumidification demand determination unit 54a determines that the home determination unit 62a is at home, the dehumidification demand determination unit 54a has a shortage of heat because it requires more heat for dehumidification than when it is determined that it is not at home. Judge whether to do. Thereby, it is possible to prevent wasteful generation of heat when absent.

  Further, the dehumidification demand determination unit 54a manages the power consumption history, the heat consumption history, the humidity inside the air-conditioned space 120a, the temperature inside the air-conditioned space 120a, and the temperature inside the air-conditioned space 120a managed by the history management unit 60a. Based on the external humidity and the temperature outside the air-conditioned space 120a, it is determined whether the amount of heat necessary for dehumidifying the air-conditioned space 120a is insufficient. Thereby, the dehumidification demand judgment part 54a can determine appropriately the calorie | heat amount required for dehumidification.

  The control unit 50 controls the operation of the fuel cell 40a, the hot water supply device 48a, and the desiccant air conditioner 56a based on the determination by the dehumidification demand determination unit 54a.

  FIG. 2 shows an example of the configuration of the hot water supply device 48a. The hot water supply device 48a is, for example, a heat pump 46a that warms water by transferring external heat to water. Since the heat pump 46a warms the water by moving the external heat quantity to the water, a large quantity of heat can be supplied with a small amount of electric power. When the ratio of heat demand to power demand is greater than the ratio of the amount of heat produced by the fuel cell 40a to the power generated by the fuel cell 40a, heat can be efficiently supplied by driving the heat pump 46a using surplus power. . For this reason, the demand amount of electric power and the demand amount of calorie | heat amount can be balanced appropriately.

  Moreover, the hot water supply device 48b of the residence 110b and the hot water supply device 48c of the residence 110c have the same components as the hot water supply device 48a. That is, the hot water supply device 48b and the hot water supply device 48c have a heat pump 46b and a heat pump 46c, respectively. Moreover, since the operation | movement of the heat pump 46b and the heat pump 46c is the same as the heat pump 46a, description is abbreviate | omitted.

  FIG. 3 shows an example of the configuration of the desiccant air conditioner 56a. The desiccant air conditioner 56a has an evaporative cooler 76a, a sensible heat exchanger 74a, a heater 78a, a dehumidifier 72a, and a regeneration outside air introduction path 80a.

  The desiccant 72a has a desiccant disposed therein, dehumidifies the air supplied from the outside with the desiccant, and regenerates the desiccant with the air supplied from the air-conditioned space 120a. The dehumidifier 72a rotates with respect to the shaft, and the desiccant agent inside the dehumidifier 72a repeats in time the moisture absorption by the air supplied from the outside and the regeneration by the air supplied from the air-conditioned space 120a. .

  The heater 78a heats the air supplied from the air-conditioned space 120a using hot water supplied from at least one of the fuel cell 40a, the hot water supply device 48a, or the hot water storage tank 42a. The hot water after passing through the heater 78a is supplied to the hot water tank 42a.

  The sensible heat exchanger 74a heat-exchanges the air supplied from the outside and the air supplied from the conditioned space 120a, cools the air supplied from the outside, and heats the air supplied from the conditioned space 120a.

  The evaporative cooler 76a cools the air supplied from the outside and the air supplied from the conditioned space 120a. For example, the evaporative cooler 76a sprays water on the air passing through the evaporative cooler 76a, and cools the air supplied from the conditioned space 120a using the latent heat of vaporization of the water.

  Further, the desiccant air conditioner 56a has a regeneration outside air introduction path 80a that warms the air outside the air-conditioned space 120a and gives it to the desiccant agent. When the desiccant air conditioner 56a regenerates the desiccant agent contained in the dehumidifier 72a without dehumidifying the air conditioned space 120a, the desiccant air conditioner 56a blocks the flow of air between the air conditioned space 120a and the desiccant air conditioner 56a. Air introduced from outside through the regeneration external air introduction path 80a is supplied to the heater 78a. The desiccant contained in the dehumidifier 72a is regenerated using air introduced from the outside and heated by the heater 78a. Thereby, the regenerated desiccant agent can be stored in advance for future dehumidification demand.

  Further, when the desiccant air conditioner 56a dehumidifies the desiccant agent contained in the dehumidifier 72a in advance while dehumidifying the air-conditioned space 120a, the amount of heat supplied to the heater 78a is increased, and the entire dehumidifier 72a is dehumidified. As described above, the amount of dehumidification per time when the desiccant agent is dehumidified in the process of regenerating the desiccant agent is made larger than the amount of moisture absorption per time the desiccant agent absorbs moisture during the process of moisture absorption by the desiccant agent. At this time, if necessary, the air introduced from the outside through the regeneration external air introduction path 80a may be mixed with the air supplied from the conditioned space 120a. Thereby, the dehumidified desiccant is accumulated in advance while dehumidifying the air-conditioned space 120a.

  The desiccant air conditioner 56a is a case where the desiccant agent contained in the dehumidifier 72a is previously dehumidified while dehumidifying the air-conditioned space 120a, and the amount of heat required for dehumidifying the air in the air-conditioned space 120a may be small. The desiccant desiccant that has been dehumidified may be accumulated by reducing the amount of air supplied from the air-conditioned space 120a and the amount of air supplied to the air-conditioned space 120a and introducing air from outside through the regeneration external air introduction path 80a. .

  By these controls, the desiccant air conditioner 56a can dehumidify the desiccant in advance when the amount of heat necessary for dehumidification will be insufficient in the future. In addition, the regenerated desiccant agent can be accumulated while dehumidifying the air in the air-conditioned space 120a.

  Further, the desiccant air conditioner 56b of the residence 110b and the desiccant air conditioner 56c of the residence 110c have the same components as the desiccant air conditioner 56a. The constituent elements of the desiccant air conditioner 56b and the desiccant air conditioner 56c operate in the same manner as the constituent elements of the desiccant air conditioner 56a, and thus the description thereof is omitted.

  The dehumidification demand determination unit 54a calculates the amount of hot water produced in the future and the integrated amount of hot water consumed in the future based on the history of power consumption and the history of heat consumption managed by the history management unit 60a. When the accumulated amount of hot water consumed reaches the sum of the amount of hot water stored in the hot water tank 42a and the amount of hot water produced within a predetermined period, the dehumidification demand determination unit 54a is necessary for dehumidification. Judge that there is not enough heat.

  FIG. 4 shows an example of temporal development of the accumulated amount of warm water and the consumed amount of warm water predicted by the dehumidification demand determining unit 54a. The dehumidification demand determination unit 54a calculates the sum (m) of the amount of hot water currently stored in the hot water storage tank 42a and the amount of hot water produced in the future and the accumulated amount (n) of consumed hot water until six hours later. Over the period of time. As illustrated in FIG. 4, the accumulated amount (n) of hot water consumed at time t within 6 hours from the present is the sum of the amount of hot water stored in the hot water tank 42a and the amount of hot water produced ( m), the dehumidification demand determination unit 54a determines that the amount of heat necessary for dehumidifying the air-conditioned space 120a is insufficient.

  Further, the dehumidification demand determination unit 54a determines a preliminary hot water amount that is a minimum amount of hot water to be secured, and is consumed by the sum of the hot water amount stored in the hot water tank 42a and the hot water amount produced. When the difference from the accumulated amount of hot water reaches a predetermined preliminary warm water amount within a predetermined period, it may be determined that the amount of heat necessary for dehumidification is insufficient.

  In this way, the dehumidification demand determination unit 54a determines whether or not the amount of heat necessary for dehumidification is insufficient, and the control unit 50 determines in advance that the amount of heat is not insufficient based on the determination of the dehumidification demand determination unit 54a. 40 and the desiccant air conditioner 56a can be controlled to supply heat, so that a shortage of heat necessary for dehumidification can be prevented.

  The operation of each component of the residence 110a and the internal temperature / humidity meter 63a and the external temperature / humidity meter 64a of the air-conditioned space 120a has been described above. Since the operation of each component of the dwelling 110b and the dwelling 110c is the same as the operation of each component of the dwelling 110a, description thereof is omitted. In addition, the operations of the internal temperature / humidity meter 63b and the internal temperature / humidity meter 63c in the air-conditioned space 120b and 120c are the same as the operation of the internal temperature / humidity meter 63a, and thus the description thereof is omitted. The operation of the external temperature / humidity meter 64b and the external temperature / humidity meter 64c in each of the air-conditioned space 120b and 120c is the same as the operation of the external temperature / humidity meter 64a, and thus the description thereof is omitted.

  The control unit 50 controls the power generation amount of the fuel cell 40 so as to drive the fuel cell 40 that supplies heat to the desiccant air conditioner 56 that dehumidifies the air-conditioned space 120 having a larger dehumidification demand. For this purpose, the control unit 50 acquires the dehumidification demand information from the dehumidification demand determination unit 54, increases the power generated by the corresponding fuel cell 40 to supply heat to the air-conditioned space 120 where the dehumidification demand is large, The electric power generated by the fuel cell 40 corresponding to the small conditioned space 120 is reduced.

  At this time, the control unit 50 determines the magnitude of the dehumidification demand of each air-conditioned space 120 based on the amount of heat supplied to the desiccant air conditioner 56 that dehumidifies each air-conditioned space 120. For example, the air-conditioning space 120 that is dehumidified by the desiccant air conditioner 56 that consumes the largest amount of heat is determined to have the highest dehumidifying demand, and the air-conditioned space 120 that is dehumidified by the desiccant air conditioner 56 that consumes the least amount of heat is dehumidified. Judged to be the smallest.

  As another method, information on the degree of dehumidification demand may be acquired from each dehumidification demand determination unit 54. For example, each dehumidification demand determination part 54 calculates | requires the difference of the calorie | heat amount required for dehumidification and the calorie | heat amount produced as a dehumidification demand degree over a predetermined period. In each dehumidification demand determination unit 54, the control unit 50 acquires the maximum value of the dehumidification demand level and the time when the dehumidification demand level reaches the maximum value from each dehumidification demand determination unit 54.

  The control unit 50 determines the magnitude of the dehumidification demand based on the maximum value of the dehumidification demand level acquired from each dehumidification demand determination unit 54 and the time when the dehumidification demand level reaches the maximum value. For example, the first determination criterion may be that the predetermined degree of dehumidification demand is exceeded first, and the magnitude of the dehumidification demand degree may be the second determination criterion.

  In addition, when it is necessary to increase the power generation amount of the fuel cell 40, the control unit 50 selects the air conditioning space 120 with the greatest dehumidification demand and supplies the amount of heat to the desiccant air conditioner 56 that dehumidifies the air conditioning space 120. The power generated by the fuel cell 40 is increased.

  In addition, when the dehumidification demand determination unit 54 determines that the amount of heat necessary for dehumidification is insufficient, the control unit 50 supplies heat to the desiccant air conditioner 56 that dehumidifies the conditioned space 120 where the amount of heat necessary for dehumidification is insufficient. The electric power generated by the fuel cell 40 is increased, and the air-conditioning space 120 having the smallest dehumidification demand is selected, and the electric power generated by the fuel cell 40 that supplies heat to the desiccant air conditioner 56 that dehumidifies the air-conditioning space 120 is decreased. Let

  At this time, the amount of heat generated by the fuel cell 40 is used for dehumidification of the desiccant agent contained in the desiccant air conditioner 56. Further, the amount of heat generated by the fuel cell 40 may be stored in the hot water storage tank 42 as hot water. Further, the air-conditioned space 120 may be dehumidified in advance to a humidity lower than the target humidity. Here, the target humidity may be determined by a user who uses the air-conditioned space 120.

  Thus, since the control part 50 drives the fuel cell 40 which can supply calorie | heat amount to the desiccant air conditioner 56 which dehumidifies the air conditioned space 120 with a larger dehumidification demand, it is warm water from the fuel cell 40 installed far away. The amount of heat can be supplied to the desiccant air conditioner 56 more easily than when the amount of heat is moved by, for example.

  Further, when the desiccant air conditioner 56 calculates that the dehumidifying demand determination unit 54 calculates that the amount of heat necessary for dehumidification is insufficient, the desiccant agent can be dehumidified in advance, so that the air-conditioned space 120 needs to be dehumidified. Sometimes, even if the amount of heat is not generated, the conditioned space 120 can be immediately dehumidified.

  Further, the control unit 50 can increase the power generation efficiency of the fuel cell 40 by increasing the output of the fuel cell 40, and the desiccant compared to the power generated by the fuel cell 40. When the amount of heat necessary for dehumidification by the air conditioner 56 is insufficient, the output of the fuel cell 40 is increased and the hot water supply device 48 is driven using surplus power.

  FIG. 5 shows an example of the relationship between the power generated by the fuel cell 40 and the power generation efficiency. In general, the power generation efficiency of the fuel cell 40 depends on the power generated by the fuel cell 40. Therefore, when the reference efficiency that is the lower limit of the power generation efficiency is determined, the lower limit of the power for making the power generation efficiency equal to or higher than the reference efficiency is determined.

  Therefore, when the amount of heat necessary for dehumidification by the desiccant air conditioner 56 is insufficient, the power generation efficiency of the fuel cell 40 may be made higher than the predetermined power generation efficiency so that the fuel cell 40 can be operated with high power generation efficiency. When possible, the electric power generated by the fuel cell 40 is increased, and the hot water supply device 48 is driven using surplus electric power to supply the necessary amount of heat.

  FIG. 6 is a flowchart illustrating the operation of the control unit 50 when the amount of heat necessary for dehumidification is insufficient. It is determined whether the power generation efficiency can be made higher than a predetermined power generation efficiency while satisfying the heat demand by increasing the output of the fuel cell 40 (S210). When the demand for heat is met by increasing the output of the fuel cell 40 and the power generation efficiency can be higher than a predetermined power generation efficiency, the output of the fuel cell 40 is increased and the power generation of the fuel cell 40 is determined in advance. The operation is performed at the efficiency or higher (S212), the hot water supply device 48 is driven with surplus power (S214), and the process is terminated.

  In S210, when it is not possible to increase the power generation efficiency higher than the predetermined power generation efficiency while increasing the output of the fuel cell 40, the dehumidification is performed using the desiccant agent included in the desiccant air conditioner 56 that has been dehumidified in advance. (S216) Further, after the desiccant air conditioner 56 is operated using the hot water in the hot water storage tank 42 and dehumidified (S218), it is determined whether or not the amount of heat is further insufficient (S220). If the amount of heat is insufficient, the output of the fuel cell 40 is increased (S222), and the process is terminated. If the amount of heat is not insufficient in S220, the process ends.

  In this way, the control unit 50 can increase the power generation efficiency of the fuel cell 40 by increasing the output of the fuel cell 40, and can be compared with the power generated by the fuel cell 40. When the amount of heat necessary for dehumidification by the desiccant air conditioner 56 is insufficient, the output of the fuel cell 40 is increased and the hot water supply device 48 is driven using surplus power, so that the output efficiency of the fuel cell 40 is increased in advance. Can do.

  Further, when the dehumidification demand determining unit 54 determines that a surplus of heat occurs, the control unit 50 stores the surplus heat in the hot water storage tank 42. When it cannot be stored in the hot water storage tank 42, the desiccant agent contained in the desiccant air conditioner 56 is dehumidified in advance using an excess amount of heat. When the desiccant agent contained in the desiccant air conditioner 56 cannot be further dehumidified, the desiccant air conditioner 56 is operated using the excess amount of heat to dehumidify the air-conditioned space 120 to a humidity lower than the target humidity in advance.

  For example, the dehumidification demand determination unit 54 determines that a surplus of heat occurs when the amount of heat produced by the fuel cell 40 is greater than the amount of heat consumed by the desiccant air conditioner 56 and the heat load 68.

  FIG. 7 is a flowchart showing the operation of the control unit 50 when a surplus of heat occurs. It is determined whether hot water can be accumulated in the hot water tank 42 (S240). When hot water can be stored in the hot water storage tank 42, hot water is stored in the hot water storage tank 42 (S242), and the process is terminated.

  If hot water cannot be accumulated in the hot water storage tank 42 in S240, it is determined whether the desiccant contained in the desiccant air conditioner 56 can be further dehumidified (S244). When the desiccant contained in the desiccant air conditioner 56 can be further dehumidified, the desiccant is dehumidified (S246), and the process is terminated. When the desiccant agent contained in the desiccant air conditioner 56 cannot be further dehumidified in S244, the air-conditioned space 120 is dehumidified to a humidity lower than the target humidity, and the process ends (S248).

  As described above, when the dehumidification demand determination unit 54 determines that the surplus of the heat amount is generated, the control unit 50 temporarily stores the excess heat amount in the hot water storage tank 42, and then when the dehumidification demand is generated, the hot water storage tank 42 is stored. Since the dehumidification is performed by supplying the amount of heat from the hot water stored in the desiccant air conditioner 56, even if the amount of heat generated thereafter decreases, the humidity of the air-conditioned space is maintained at the target value over a long period of time. Can be kept close.

  Further, when the dehumidifying demand determining unit 54 determines that surplus heat is generated, the controller 50 dehumidifies the desiccant agent contained in the desiccant air conditioner 56 using the surplus heat, and then the dehumidifying demand. When dehumidification occurs, dehumidification is performed using a desiccant that has been dehumidified in advance, so that the humidity of the air-conditioned space can be reduced even when the amount of heat is insufficient when dehumidification demand occurs. .

  In addition, when the dehumidifying demand determining unit 54 determines that surplus heat is generated, the control unit 50 uses the excess heat to dehumidify the air-conditioned space to a humidity lower than the target humidity. Even when the amount of generated heat is reduced, the humidity of the air-conditioned space can be maintained near the target value.

  FIG. 8 shows the amount of heat produced by the fuel cell 40 relative to the power generated by the fuel cell 40. The heat generated according to the electric power generated by the fuel cell 40 is determined. For example, in FIG. 8, when the power generated by the fuel cell 40 is d, the amount of heat generated by the fuel cell 40 is f. On the other hand, when the demand amount of heat is e, a surplus of heat occurs, and when the demand amount of heat is g, the heat is insufficient.

  FIG. 9 shows an example of temporal transition of the power demand and the heat demand in the residence 110a. In the residence 110a, it is assumed that the demand for electric power and the demand for heat have temporally changed from the state 1 to the state 2 state.

  That is, in state 1, the power load 44a consumes all of the power (d) generated by the fuel cell 40a. Further, the difference between the heat (f) generated by the fuel cell 40a and the total amount of heat (e) consumed by the thermal load 68a and the desiccant air conditioner 56a is supplied to the desiccant agent of the desiccant air conditioner 56a. By dehumidifying, all of the heat (f) generated by the fuel cell 40a is consumed.

  In state 2, the dehumidification demand increases compared to state 1, and the total amount (g) of heat required by heat load 68a and desiccant air conditioner 56a increases. At this time, the deficient amount of heat is compensated by using the desiccant agent of the desiccant air conditioner 56a that has been previously dehumidified when it was in the state 1 in the past.

  In this way, when the amount of heat generated by the fuel cell 40a is excessive, the desiccant agent of the desiccant air conditioner 56a is dehumidified, and then the dehumidification demand increases, and the heat generated by the fuel cell 40a is generated by the desiccant air conditioner. When the amount of heat required by the device 56a is insufficient, the desiccant agent of the desiccant air conditioner 56a that has been dehumidified in advance is used.

  FIG. 10 shows an example of power demand and heat demand in the residence 110a and the residence 110b. The electric power (d) generated by the fuel cell 40a and the fuel cell 40b is the same in the residence 110a and the residence 110b. In the residence 110a, the total amount of heat (g) required by the heat load 68a and the desiccant air conditioner 56a is larger than the heat (f) generated by the fuel cell 40a. On the other hand, in the residence 110b, the total amount of heat (f) required by the thermal load 68b and the desiccant air conditioner 56b is the same as the heat (f) generated by the fuel cell 40b.

  In the residence 110a, the amount of power (d) generated by the fuel cell 40a is greater than the power consumed by the power load 44a. Similarly, also in the residence 110b, the amount of power (d) generated by the fuel cell 40b is larger than the power consumed by the power load 44b.

  At this time, the hot water supply device 48a is driven by surplus power generated by the fuel cell 40a and the fuel cell 40b, and the amount of heat required by the desiccant air conditioner 56a is supplied by supplying the amount of heat to the desiccant air conditioner 56a.

  In this way, the electric power generated by the fuel cell 40 is mutually used in the different air-conditioned spaces 120 to balance the amount of heat necessary for dehumidification and the amount of heat supplied in each air-conditioned space 120.

  FIG. 11 shows an example of a table managed by the history management unit 60. The history management unit 60 divides the day into hourly time zones, and the hot water amount consumed by the desiccant air conditioner 56, the hot water amount consumed by the heat load 68, and the electric power load 44 are consumed for each time zone. Manage the average value of the consumed power. For each home information determined by the home determination unit 62, the average value of the amount of hot water consumed by the desiccant air conditioner 56, the amount of hot water consumed by the heat load 68, and the power consumed by the power load 44 is managed. To do. For example, in FIG. 13, (a) is a history at home and (b) is a history when absent.

  Further, the history management unit 60 classifies the humidity in the air-conditioned space 120 and the humidity outside the air-conditioned space 120 at 12:00 into humidity bands of 1%, respectively, and further the temperature in the air-conditioned space 120 at 12:00. And the temperature outside the air-conditioned space 120 are classified into temperature zones of every 0.1 degrees. Furthermore, the history is managed for all combinations of the classified humidity zone and temperature zone.

  The dehumidification demand determination unit 54 can calculate the future demand for hot water from the history of past hot water consumption managed by the history management unit 60. Further, the dehumidification demand determination unit 54 is stored in the current hot water tank 42 and the amount of hot water predicted to be produced in the future by the fuel cell 40 calculated from the history of past power consumption managed by the history management unit 60. The amount of hot water that can be supplied in the future is predicted from the amount of hot water. Thereby, the dehumidification demand judgment part 54 can judge whether future hot water will run short by comparing the predicted amount of hot water that can be supplied and the predicted amount of hot water to be supplied.

  Furthermore, since the dehumidification demand determination part 54 can predict a future dehumidification demand from the amount of hot water consumed by the desiccant air conditioner 56a managed by the history management part 60, it can appropriately determine the future dehumidification demand. Further, when the dehumidification demand determination unit 54 determines that the home determination unit 62 determines that the user is at home, the dehumidification demand determination unit 54 uses the home history managed by the history management unit 60 to determine whether the hot water is insufficient. When the home determination unit 62 determines that the user is not at home, the non-home history managed by the history management unit 60 is used to determine whether the amount of heat is insufficient.

  Further, since the history management unit 60 manages the history with a combination of the humidity inside the air-conditioned space 120, the temperature inside the air-conditioned space 120, the humidity outside the air-conditioned space 120, and the temperature outside the air-conditioned space 120, dehumidification demand Based on the current humidity inside the air-conditioned space 120, temperature inside the air-conditioned space 120, humidity outside the air-conditioned space 120, and temperature outside the air-conditioned space 120, the determination unit 54 more accurately determines future dehumidification demand. Can be judged.

  In another modification of the cogeneration system, the fuel cell 40 according to the first embodiment is a device that simultaneously generates power and supplies heat using flammable fuel such as fossil fuel, hydrogen gas, and biological organism as fuel. System. Such equipment is, for example, a gas engine or a gas turbine. Also in this modification, it is apparent that the same effect as that described in the first embodiment can be obtained.

  Still another modification of the cogeneration system is that the fuel cell 40 according to the first embodiment is operated with a heat source other than the combustible fuel, and the power generation and the heat supply are performed as a device for simultaneously generating and supplying the heat. The system is a device that performs at the same time. Such a device is, for example, a Stirling engine. Also in this modification, it is apparent that the same effect as that described in the first embodiment can be obtained.

  FIG. 12 shows an example of the configuration of the computer 500 that each of the control unit 50 and the dehumidification demand determination unit 54 has. In this example, the computer 500 stores a program that causes the cogeneration system to function as the cogeneration system 30 described with reference to FIGS.

  The computer 500 includes a CPU 700, a ROM 702, a RAM 704, a communication interface 706, a hard disk drive 710, a flexible disk drive 712, and a CD-ROM drive 714. The CPU 700 operates based on programs stored in the ROM 702, the RAM 704, the hard disk drive 710, the flexible disk 720, and / or the CD-ROM 722.

  For example, a program that causes the cogeneration system 30 to function causes the computer 500 to function as the control unit 50 and the dehumidification demand determination unit 54 described with reference to FIGS. 1 to 11 to function the cogeneration system. Moreover, the computer 500 which each of the control part 50 and the dehumidification demand judgment part 54 has may store the program which functions each of the corresponding control part 50 and the dehumidification demand judgment part 54. FIG.

  The communication interface 706 includes, for example, the fuel cell 40, the power load 44, the hot water supply device 48, the heat load 68, the hot water storage tank 42, the history management unit 60, the home determination unit 62, the desiccant air conditioner 56, the internal temperature and humidity meter 63, and the external temperature. It communicates with the hygrometer 64, receives information on each state, etc., and transmits a control signal for controlling each. The hard disk drive 710, the ROM 702, or the RAM 704 as an example of a storage device stores setting information, a program for operating the CPU 700, and the like. The program may be stored in a recording medium such as the flexible disk 720 and the CD-ROM 722.

  When the flexible disk 720 stores a program, the flexible disk drive 712 reads the program from the flexible disk 720 and provides it to the CPU 700. When the CD-ROM 722 stores a program, the CD-ROM drive 714 reads the program from the CD-ROM 722 and provides it to the CPU 700.

  Further, the program may be read directly from the recording medium into the RAM and executed, or once installed in the hard disk drive 710, the program may be read into the RAM 704 and executed. Further, the program may be stored in a single recording medium or a plurality of recording media. The program stored in the recording medium may provide each function in cooperation with the operating system. For example, the program may request the operating system to perform a part or all of the function and provide the function based on a response from the operating system.

  As a recording medium for storing a program, in addition to a flexible disk and a CD-ROM, an optical recording medium such as a DVD and a PD, a magneto-optical recording medium such as an MD, a tape medium, a magnetic recording medium, an IC card, a miniature card, etc. A semiconductor memory or the like can be used. A storage device such as a hard disk or a RAM provided in a server system connected to a dedicated communication network or the Internet may be used as a recording medium.

  As is clear from the above description, according to the present embodiment, the desiccant air conditioner 56 dehumidifies the desiccant agent in advance when the dehumidification demand determination unit 54 calculates that the amount of heat necessary for dehumidification is insufficient. Even when the amount of heat is not generated when the space needs to be dehumidified, the air-conditioned space can be immediately dehumidified.

  A plurality of fuel cells 40 are provided, and the amount of heat is supplied to the different desiccant air conditioners 56, so that it is possible to cope with a wide variation in load. Further, since the control unit 50 drives the fuel cell 40 that can supply heat to the desiccant air conditioner 56 that dehumidifies the air-conditioned space where the dehumidification demand is larger, the heat amount is moved from the fuel cell 40 installed far away by hot water or the like. Compared with the case where it does, heat can be supplied to the desiccant air conditioner 56 more easily.

  By increasing the output of the fuel cell 40, the control unit 50 can increase the power generation efficiency of the fuel cell 40 above a predetermined power generation efficiency, and the desiccant air conditioner 56 in comparison with the power generated by the fuel cell 40. When the amount of heat necessary for dehumidification is insufficient, the output of the fuel cell 40 is increased and the hot water supply device 48 is driven using surplus power, so that the output efficiency of the fuel cell 40 can be increased in advance. Since the controller 50 further increases the output of the fuel cell 40 on the condition that the dehumidification demand determination unit 54 determines that the amount of heat is insufficient with respect to the dehumidification demand, the amount of heat for generating the fuel cell 40 is wasted. Can be prevented.

  When the dehumidifying demand determining unit 54 determines that a surplus of heat is generated, the control unit 50 uses the surplus heat to dehumidify the air-conditioned space to a humidity lower than the target humidity in advance, so that it is generated thereafter. Even when the amount of heat decreases, the humidity of the air-conditioned space can be maintained near the target value. When the dehumidifying demand determining unit 54 determines that surplus heat is generated, the controller 50 dehumidifies the desiccant contained in the desiccant air conditioner 56 using the surplus heat, and then the dehumidifying demand is generated. In some cases, dehumidification is performed using a desiccant that has been dehumidified in advance, so that the humidity of the air-conditioned space can be reduced even when the amount of heat is insufficient when dehumidification demand occurs.

  When the dehumidification demand determination unit 54 determines that surplus heat is generated, the control unit 50 temporarily stores the excess heat in the hot water storage tank 42, and then from the hot water stored in the hot water storage tank 42 when dehumidification demand occurs. Since dehumidification is performed by supplying the amount of heat to the desiccant air conditioner 56, the humidity of the air-conditioned space is maintained near the target value for a long period even when the amount of heat generated thereafter decreases. Can do.

  The dehumidification demand determination unit 54 determines whether or not the amount of heat is insufficient based on the history of consumption of hot water and the history of power consumption managed by the history management unit 60 and the amount of hot water stored in the hot water storage tank 42. Therefore, it is possible to more appropriately determine whether the amount of heat is insufficient.

  If the dehumidification demand determination unit 54 determines that the home determination unit 62 determines that the user is at home, the dehumidification demand determination unit 54 determines whether the hot water is insufficient using the home history managed by the history management unit 60. If the home determination unit 62 determines that the user is not at home, the non-at-home history managed by the history management unit 60 is used to determine whether the amount of heat is insufficient. It is possible to correctly determine whether or not the hot water is insufficient in each case of staying at home.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements are also included in the technical scope of the present invention.

It is a figure which shows an example of a structure of the cogeneration system 30 which concerns on embodiment of this invention. It is a figure which shows an example of a structure of the hot water supply apparatus 48a. It is a figure which shows an example of a structure of the desiccant air conditioner 56a. It is a figure which shows an example of the time development of the accumulation | storage amount of warm water, and the consumption amount of warm water which the dehumidification demand judgment part 54a estimated. It is a figure which shows an example of the relationship between the electric power which the fuel cell 40 generates, and power generation efficiency. It is a flowchart which shows operation | movement of the control part 50 when the calorie | heat amount required for dehumidification is insufficient. It is a flowchart which shows operation | movement of the control part 50 when the surplus of heat | fever amount arises. It is a figure which shows the calorie | heat amount which the fuel cell 40 produces with respect to the electric power which the fuel cell 40 generates. It is a figure which shows an example of the time transition of the electric power demand and heat demand in the residence 110a. It is a figure which shows an example of the electric power demand and the heat demand in the dwelling 110a and the dwelling 110b. It is a figure which shows an example of the table which the log | history management part 60 manages. It is a figure which shows an example of a structure of the computer 500 which each of the control part 50 and the dehumidification demand judgment part 54 has.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 40 ... Fuel cell, 50 ... Control part, 54 ... Dehumidification demand judgment part, 54 ... Dehumidification demand judgment part, 54 ... Dehumidification demand judgment part, 56 ... Desiccant air conditioner, 30 ... Cogeneration system

Claims (21)

A cogeneration device that generates electricity and heat, and
A desiccant air conditioner that dehumidifies the air-conditioned space using the amount of heat generated by the cogeneration apparatus;
The cogeneration system power consumption history of the power load which consumes the generated power by, and based on the current humidity, whether the amount of heat required for dehumidification of the air conditioning space is shortage within a predetermined time period Dehumidification demand judgment section to judge
With
The desiccant air conditioner is
An evaporative cooler that cools air supplied from the air-conditioned space and air supplied from outside the air-conditioned space;
A sensible heat exchanger that exchanges heat between air supplied from the air-conditioned space and air supplied from outside the air-conditioned space;
A heater that heats the air supplied from the conditioned space using the amount of heat generated by the cogeneration apparatus;
A dehumidifier that dehumidifies the desiccant with air supplied from the air-conditioned space, and dehumidifies the air supplied from outside the air-conditioned space with the desiccant;
A regeneration external air introduction path for introducing air from outside the air-conditioned space and supplying the air to the heater;
Have
Supplied from the air-conditioned space, cooled by the evaporative cooler, heated by the sensible heat exchanger and the heater, and discharged out of the air-conditioned space dehumidified the desiccant agent,
Supplied from outside the air-conditioned space, dehumidified by the dehumidifier, and cooled by the sensible heat exchanger and the evaporative cooler to the air-conditioned space;
When the dehumidification demand determination unit determines that the amount of heat necessary for dehumidification is insufficient, the amount of heat supplied to the heater is increased, and the air supplied from the air-conditioned space and the outside of the air-conditioned space through the regeneration external air introduction path by dehumidifying the desiccant agent introduced air is heated by the heater, while performing dehumidification of the air-conditioned space, dehumidified said desiccant agent previously stored to keep cogeneration system. A plurality of the desiccant air conditioners are provided, each dehumidifying a different conditioned space,
A plurality of the cogeneration devices are provided, each supplying the heat quantity to the different desiccant air conditioners,
Power one has power generation of the plurality of the cogeneration system also includes a power supply path that can be supplied to the power load,
A control unit for controlling the power generation amount of the cogeneration apparatus,
2. The cogeneration system according to claim 1, wherein the control unit drives the cogeneration apparatus capable of supplying heat to the desiccant air conditioner that dehumidifies the air conditioned space having a higher dehumidification demand. It further comprises a hot water supply device that heats water using surplus power generated by the cogeneration device,
The control unit can increase the power generation efficiency of the cogeneration apparatus by increasing the output of the cogeneration apparatus, and the power generation efficiency of the cogeneration apparatus can be increased according to the power generated by the cogeneration apparatus. when insufficient amount of heat required for dehumidification by the desiccant air-conditioning system as compared to the amount of heat generated by the cogeneration system, the water heater is driven using the surplus power to increase the output of the cogeneration system ,
The cogeneration system according to claim 2, wherein the desiccant air conditioner further dehumidifies using the amount of heat generated by the hot water supply device.   The cogeneration system according to claim 3, wherein the controller further increases the output of the cogeneration apparatus in advance on condition that the dehumidification demand determination unit determines that the amount of heat is insufficient with respect to the dehumidification demand. A hot water storage tank for storing hot water heated by the cogeneration device and the hot water supply device;
A hot water storage hot water supply path for providing hot water stored in the hot water storage tank to the desiccant air conditioner;
Wherein, the hot water storage when determining the dehumidifying demand determining unit surplus occurs in the heat quantity, the condition can be further accumulate hot water to the hot water storage tank, a hot water heat before Symbol excess once the hot water storage tank Then, when dehumidification demand occurs, the amount of heat is supplied from the hot water stored in the hot water storage tank to the desiccant air conditioner,
The cogeneration system according to claim 3, wherein the desiccant air conditioner dehumidifies using hot water supplied from the hot water storage hot water supply path. The controller determines whether the desiccant can be further dehumidified when the dehumidification demand determination unit determines that the surplus of heat occurs, and when the hot water cannot be further accumulated in the hot water storage tank, on condition that it further dehumidifying the desiccant agent, using the heat of pre Symbol surplus advance dehumidified before Symbol desiccant agent, when the subsequent dehumidification demand occurs in, using the desiccant agent that is moistened beforehand dividing cogeneration system according to 請 Motomeko 5 for dehumidifying the air-conditioned space. Wherein, in a case where the dehumidifying demand determining unit surplus of the heat is generated is determined on the condition that the can not be further accumulated hot water in the hot water storage tank, and can not be further dehumidifying the desiccant agent, before Symbol excess The cogeneration system according to claim 6 , wherein the air-conditioned space is dehumidified in advance to a humidity lower than the target humidity using the amount of heat. A home determination unit for determining whether the user is at home,
The dehumidifying demand determining section further when said home determination unit determines that it is in home, the home determination unit as compared to when it is determined that not being resident home, the amount of heat required by the dehumidifying The cogeneration system according to claim 1 , wherein it is determined whether the amount of heat is insufficient. It further includes a history management unit that manages the history of consumption of hot water,
The dehumidification demand determination unit further determines whether the amount of heat is insufficient based on the history of consumption of hot water managed by the history management unit and the amount of hot water stored in the hot water storage tank. The cogeneration system according to claim 5 . Home determination unit that determines whether or not you are at home
Further comprising
The history management unit manages the history of consumption of hot water in each case where the home determination unit determines that the user is at home and when the home management unit determines that the user is not at home,
When the dehumidification demand determination unit determines that the home determination unit determines that the user is at home, the dehumidification demand determination unit determines whether the hot water is insufficient using the home history managed by the history management unit. In the case where the home determination unit determines that the user is not at home, the non-home history managed by the history management unit is used to determine whether the amount of heat is insufficient. The described cogeneration system.   The at-home determination unit detects locking information of a lock provided on a door of the residence, determines that the home is not home when locked from the outside of the residence, and is not locked or from the inside of the residence The cogeneration system according to claim 10, wherein the cogeneration system determines that the user is at home when locked.   The at-home determination unit determines that the user is at home when the fluctuation amount of power consumption of the power load is larger than a predetermined reference amount, and the fluctuation amount of power consumption of the power load is equal to or less than a predetermined reference amount. The cogeneration system according to claim 10, wherein it is determined that the user is not at home in the case of.   History management unit for managing the history of power consumption of the power load and the history of consumption of hot water
Further comprising
  The dehumidification demand determination unit calculates the amount of hot water to be produced in the future and the accumulated amount of hot water to be consumed in the future based on the history of power consumption and the history of consumption of hot water managed by the history management unit, Claim that it is determined that the amount of heat necessary for dehumidification is insufficient when the cumulative amount of consumed hot water reaches the sum of the amount of warm water stored in the hot water tank and the amount of warm water produced within a predetermined period. Item 6. The cogeneration system according to item 5.   The history management unit displays a history of power consumption and a history of consumption of hot water for a combination of humidity in the air-conditioned space, humidity outside the air-conditioned space, temperature in the air-conditioned space, and temperature outside the air-conditioned space. Manage,
  The dehumidification demand determination unit includes a history of power consumption managed by the history management unit for a combination of humidity in the air-conditioned space, humidity outside the air-conditioned space, temperature in the air-conditioned space, and temperature outside the air-conditioned space, and Based on the history of consumption of hot water, the current humidity in the air-conditioned space, the current humidity outside the air-conditioned space, the current temperature in the air-conditioned space, and the current temperature outside the air-conditioned space, The cogeneration system according to claim 13, wherein it is determined whether or not the amount of heat necessary for dehumidifying the air-conditioned space is insufficient.   The dehumidification demand determination unit is calculated based on a power consumption history and a hot water consumption history managed by the history management unit, and a hot water amount stored in the hot water storage tank and a hot water amount to be produced in the future The cogeneration system according to claim 13, wherein when the difference between the sum and the accumulated amount of hot water consumed reaches a predetermined amount of warm water within a predetermined period, it is determined that the amount of heat necessary for dehumidification is insufficient. system. The desiccant air-conditioning apparatus, in a case where without dehumidification before Symbol conditioned space performs dehumidification only of the desiccant agent is claim 1 which before SL using air introduction route for playback performs dehumidification of the desiccant agent cogeneration system according to. A cogeneration device that generates electricity and heat, and
Air-conditioned space,
A desiccant air conditioner that dehumidifies the air-conditioned space using the amount of heat generated by the cogeneration apparatus;
The cogeneration system power consumption history of the power load which consumes the generated power by, and based on the current humidity or amount of heat required for dehumidification between before Kisora airspace is shortage within a predetermined time period a dehumidifying demand determining section determines whether
With
The desiccant air conditioner includes an evaporative cooler that cools air supplied from the air-conditioned space and air supplied from outside the air-conditioned space;
A sensible heat exchanger that exchanges heat between air supplied from the air-conditioned space and air supplied from outside the air-conditioned space;
A heater that heats the air supplied from the conditioned space using the amount of heat generated by the cogeneration apparatus;
A dehumidifier that dehumidifies the desiccant with air supplied from the air-conditioned space, and dehumidifies the air supplied from outside the air-conditioned space with the desiccant;
A regeneration external air introduction path for introducing air from outside the air-conditioned space and supplying the air to the heater;
Have
Supplied from the air-conditioned space, cooled by the evaporative cooler, heated by the sensible heat exchanger and the heater, and discharged out of the air-conditioned space dehumidified the desiccant agent,
Supplied from outside the air-conditioned space, dehumidified by the dehumidifier, and cooled by the sensible heat exchanger and the evaporative cooler to the air-conditioned space;
When the dehumidification demand determination unit determines that the amount of heat necessary for dehumidification is insufficient, the amount of heat supplied to the heater is increased, and the air supplied from the air-conditioned space and the outside of the air-conditioned space through the regeneration external air introduction path by dehumidifying the desiccant agent introduced air is heated by the heater, while performing dehumidification of the air-conditioned space, previously stored to keep Ken creation was dehumidified said desiccant agent. A plurality of the desiccant air conditioners are provided, each dehumidifying the different air conditioned spaces,
A plurality of the cogeneration devices are provided, each supplying the heat quantity to the different desiccant air conditioners,
Power one has power generation of the plurality of the cogeneration system also includes a power supply path that can be supplied to the power load,
A control unit for controlling the power generation amount of the cogeneration apparatus,
The said control part drives the said cogeneration apparatus which can supply calorie | heat amount to the said desiccant air conditioner which dehumidifies the said air conditioned space with a larger dehumidification demand. It further comprises a hot water supply device that heats water using surplus power generated by the cogeneration device,
The control unit can increase the power generation efficiency of the cogeneration device by increasing the output of the cogeneration device, and compared with the power generated by the cogeneration device. wherein when a lack of amount of heat required for dehumidification by the desiccant air conditioner, building according to claim 18 for driving the water heater using the surplus power to increase the output of the cogeneration system.   The building according to claim 19, wherein the controller further increases the output of the cogeneration apparatus in advance on condition that the dehumidification demand determination unit determines that the amount of heat is insufficient with respect to the dehumidification demand. The desiccant air-conditioning apparatus, in a case where without dehumidification before Symbol conditioned space performing the removal of the desiccant agent moisture alone, claim before Symbol with air introduction route for playback performs dehumidification of the desiccant agent 17 building as claimed in.

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