JP4341848B2 - Air-collecting solar dehumidification cooler system - Google Patents

Description

  The present invention uses a roof surface as a solar heat collecting part, and collects the air collected immediately below the floor by a falling duct through a handling box provided with a damper and a fan installed in the attic space, which is an attic space, to store heat. In addition, the present invention relates to an air-collecting solar dehumidifying and cooling system with a dehumidifying and cooling function, which is an air-collecting solar system that heats air with solar energy to obtain heating by blowing it into the room. .

There is a solar system house described in the following patent document as an air-collecting solar system in which air is heated by solar energy to obtain heating and can be cooled at a high temperature such as summer. Since the cooling equipment does not use Freon gas, it is a comfortable cooling suitable for environmental preservation, and furthermore, since the heating system equipment is used as such cooling equipment, it is inexpensive and energy saving.
Japanese Patent No. 2731993 JP-A-6-313632

  The contents will be described with reference to FIG. As an air heat collecting mechanism that heats air with solar energy and obtains heating, an air flow path 2 having a roof gradient is formed immediately below the roof plate 1, and the lower surface thereof is insulated with a heat insulating material such as glass wool. Configure as a layer. One end of the air flow path 2 is opened as an outside air inlet 3 in an underside of the eaves or in a shed space for shed ventilation, and the other end is communicated with a ridge duct 4 as a heat collection box made of a heat insulating material.

  The handling box 5 provided with the inlet damper 6, the fan 7 and the outlet damper 8 is installed in the attic space as a first handling box, and the inflow side of the inlet damper 6 of the handling box 5 is communicated with the ridge duct 4. One of the outlet side of the outlet damper 8 is connected to the upper end of the falling duct 10. The lower end of the falling duct 10 opened to the air circulation space 13 between the thermal storage soil concrete 11 and the floor panel 12, and an air outlet 14 from the air circulation space 13 to the room was provided. In the vicinity of the top of the roof plate 1, a glass plate 25 is provided above the metal plate.

  As described above, the inflow side of the inlet damper 6 of the handling box 5 is connected to the ridge duct 4, and the inflow side of the inlet damper 6 is also connected to the circulation duct 22 that opens into the room through the suction port 23 on the ceiling or the like. The inlet damper 6 is connected and configured as a channel switching damper that switches the channel between the ridge duct 4 side and the circulation duct 22 side.

  As a second handling box, a handling box 27 incorporating a fan 26 is installed in the attic space. The circulation duct 22 is branched and connected to the inflow side of the second handling box 27, and the outside air intake duct 28 is also connected to the inflow side of the second handling box 27. Further, an inflow amount adjusting damper 29 for adjusting the inflow amount of the connection portion with the circulation duct 22 and the connection portion of the outside air intake duct 28 is provided.

  In the figure, reference numerals 30 and 31 denote adsorbent-filled containers filled with an adsorbent 32 having a large surface area such as silica gel, zeolite, activated carbon or the like, that is, a substance having innumerable pores. Nos. 30 and 31 are ducts which are connected in parallel by connecting the inflow side and the outflow side. Cycle switching dampers 33 and 34 are arranged at the midpoint of connection between the adsorbent filling containers 30 and 31, but at the junction where the cycle switching dampers 33 on the inflow side of the adsorbent filling containers 30 and 31 are arranged. Is connected to the other side of the outlet side of the outlet damper 8 of the first handling box 5 and the outlet side of the second handling box 27 so as to be switchable by the cycle switching damper 33.

  On the other hand, an air supply duct 35 that connects the outflow side of the adsorbent filling containers 30 and 31 and the upper part of the falling duct 10 at the junction where the outflow side cycle switching damper 34 is disposed on the adsorbent filling containers 30 and 31. And the exhaust duct 36 are connected to be switchable by the cycle switching damper 34.

  In the middle of the air supply duct 35, a cooling coil 38 for circulating the coolant water with the heat radiating coil 37 that radiates heat to the outside air and the watering equipment 40 are sequentially arranged as viewed from the adsorbent filling containers 30 and 31 side. .

  A hot water supply coil 15 is provided in the exhaust duct 36. Although not shown, the hot water supply coil 15 is connected to a hot water storage tank by a circulation pipe, and an auxiliary boiler for reheating is provided in the hot water tank in the middle of the bath. Connect hot water supply pipes that lead to the bathroom, washroom, and kitchen.

  Moreover, in the 1st handling box 5, the auxiliary heating coil 41 is provided between the inlet damper 6 and the fan 7, and this auxiliary heating coil 41 is connected to the boiler only for heating built in an auxiliary boiler.

  Next, usage will be described. When cooling is performed at a high temperature such as in summer, the inlet damper 6 of the first handling box 5 communicates the inflow side of the handling box 5 with the ridge duct 4 and closes the circulation duct 22 side. Moreover, the exit damper 8 closes the falling duct 10 side. Further, the adsorbent filling containers 30, 31 are connected to the first handling box 5 on the inflow side of the adsorbent filling container 31 and connected to the second handling box 27 on the inflow side of the adsorbent filling container 30, for example. The cycle switching damper 33 is set so that the outflow side of the adsorbent filling container 31 is connected to the exhaust duct 36, and the outflow side of the adsorbent filling container 30 is connected to the air supply duct 35. Set.

  When the fan 26 built in the second handling box 27 is driven in this way, the indoor air from the circulation duct 22 that opens to the room and the outside air from the outside air intake duct 28 are adjusted by the inflow adjustment damper 29. Then, it enters the second handling box 27 and is sent to the adsorbent filling container 30 from here. In the adsorbent filling container 30, moist air from the inside or outside is dehumidified by the adsorbent 32 by the adsorbing action of the dried adsorbent 32.

  The phenomenon of adsorption is a phenomenon in which molecules are physically taken into a substance having an enormous surface area such as the adsorbent 32, that is, innumerable pores, and the molecules adsorbed when the temperature is raised or vacuumed. Jump out. This is desorption. Since water molecules in the air, that is, water vapor, move violently, they have kinetic energy (latent heat). When water molecules are adsorbed by the adsorbent 32 and cannot move, latent heat is released and the air temperature rises. Adsorption-type dehumidification cooling uses this principle.

  The dehumidified air whose temperature has risen exits the adsorbent filling container 30 and flows through the air supply duct 35 and passes through the cooling coil 38 where the coolant 39 circulates with the heat radiating coil 37 that radiates heat to the outside air by the pump 39 to some extent. Reduce the temperature. Relative humidity increases somewhat with this temperature drop, but is still dry air.

  Next, water is sprayed and humidified by the watering equipment 40, so that the air becomes cold air, flows down in the falling duct 10, and enters the air circulation space 13 between the thermal storage soil concrete 11 and the floor panel 12. In this air circulation space 13, the heated hot air cools directly under the floor surface through the floor panel, stores the cold in the heat storage soil concrete 11, and is blown out directly into the room as cold air from the air outlet 14. Performs three types of cooling.

  In this way, when the entire adsorbent 32 is wetted in the adsorbent filling container 30, the cycle switching damper 33 is switched so that the inflow side of the adsorbent filling container 30 is connected to the first handling box 5. The cycle switching damper 34 is switched so that the outflow side of the adsorbent filling container 30 is connected to the exhaust duct 36. As a result, the adsorbent-filled container 31 now performs the adsorption.

  And if the fan 7 of the 1st handling box 5 is driven, the outside air (temperature about 30 degreeC, humidity about 75) which the roof board 1 which is a metal plate entered into the air flow path 2 which has a roof gradient just under a roof board. %) To a high temperature ultra-dry air with a temperature of about 80 ° C. and a humidity of about 10% or less.

  The super dry air is collected in the ridge duct 4 and then enters the first handling box 5 by the fan 7, enters the adsorbent filling container 30 from the first handling box 5, and removes the wet adsorbent 32 from the first handling box 5. It is dried by the desorption action of the adsorbent 32.

  When the wet adsorbent 32 is desorbed and humidified as described above, the ultra-dry air is discharged from the exhaust duct 36 as moist air as the absolute humidity increases and the temperature is lowered due to latent heat. As a result, the adsorbent 32 in the adsorbent filling container 30 is dried, and is prepared for the next adsorption.

  Note that the air discharged from the exhaust duct 36 is still hot, and water fed from a hot water storage tank (not shown) through the circulation pipe is heated by the hot water supply coil 15 to form hot water as hot water. From here, it is further reheated by an auxiliary boiler for reheating as needed, and hot water is supplied from the hot water supply pipes to various places.

  As described above, the two adsorbent-filled containers 30 and 31 alternately repeat the adsorption and desorption, but the desorbed and dried adsorbent 32 loses energy by the amount of water, but recovers the lost energy during adsorption. To do.

  However, in the solar system house shown in FIG. 14, the air that has been dehumidified by the adsorption tower and has risen in temperature passes through the cooling coil and lowers the temperature to some extent. In order to obtain the above, it is necessary to spray the water with a watering facility and humidify it.

  If such water sprinkling facilities must be provided, it is necessary to consider the water environment and other considerations, and it also takes up space and is troublesome.

  The object of the present invention is an air collecting solar system that eliminates the inconveniences of the above-mentioned conventional examples and heats the air with solar energy to obtain heating, and is capable of cooling at high temperatures such as in summer, and also uses Freon gas. It is a cooling system suitable for environmental protection, and since it uses heating system equipment as such cooling equipment, it is inexpensive and energy-saving, and obtains air that can get a cool feeling as it becomes low-temperature, medium-humidity as air sent to the room It is an object of the present invention to provide an air-collecting solar dehumidifying and cooling system that can easily and reliably achieve this.

In order to achieve the above object, the present invention according to claim 1 is provided with a damper box at the front and rear as an air conditioner that is connected to a solar heat collector and sends air into the room, and includes a first desiccant module, a cooling coil, It consists of two sets of a desiccant module and a handling box type desiccant air conditioner that incorporates a fan. The regenerative operation and dehumidification operation are performed simultaneously in a batch system that switches between regeneration operation and dehumidification operation. After the first desiccant module is dried, it becomes medium-temperature medium-humidity, and this medium-temperature medium-humidity air is cooled by the cooling coil, becomes low-temperature high-humidity, and is exhausted after adsorbing moisture to the second desiccant module. During operation, low temperature and high humidity outside air is taken in and dehumidified by the first desiccant module. Cooling and further subjected to evaporative cooling using water which had been adsorbed to the second desiccant module during regeneration operation, Ri feed air becomes wet during cold in the room, the switching operation of the regeneration operation and the dehumidifying operation, Comparing the time when the outlet humidity of one of the first desiccant module and the second desiccant module of the desiccant air conditioner of the desiccant air conditioner during the regeneration operation reaches the set value and the switching set time is reached, either one reaches the set value This is the gist.

  According to the first aspect of the present invention, the desiccant air conditioner is characterized by incorporating a first desiccant module, a cooling coil, a second desiccant module and two desiccant modules. In the desiccant air conditioner during regeneration operation, After the first desiccant module is dried by the high-temperature and low-humidity collected air, it becomes medium-temperature and medium-humidity, and this medium-temperature and medium-humidity air is cooled by the cooling coil, and becomes low-temperature and high-humidity to adsorb moisture to the second desiccant module. .

  In the desiccant air conditioner during dehumidifying operation, low-temperature and high-humidity outside air is taken in and dehumidified by the first desiccant module, and the air that has become intermediate-temperature and low-humidity is cooled by the cooling coil. Evaporative cooling is performed using the moisture adsorbed on the second desiccant module, and air that has become low-temperature, medium-humidity that provides a moderate cool feeling can be sent indoors.

  Moreover, it consists of two sets that perform regeneration operation and dehumidification operation at the same time in a batch system that switches between regeneration operation and dehumidification operation. The same mechanism can be used, and it can be formed as a compact handling box by providing a damper box at the front and back. By separately providing a fan and a damper on the pipe, it is possible to prevent the pipe from becoming complicated.

  Furthermore, in the switching operation between the regeneration operation and the dehumidifying operation of the first desiccant module and the second desiccant module, the time when the outlet humidity of one of the desiccant modules reaches the set value is compared with the switch set time, and either is set to the set value. By performing if it reaches, the switching operation between the regeneration operation and the dehumidification operation of the first desiccant module and the second desiccant module can be performed reliably.

  As described above, the air heat collecting solar dehumidifying cooling system of the present invention, the handling box used therefor, and the air heat collecting solar dehumidifying cooling method are air collecting heat by heating the air with solar energy. It is a solar system that can be cooled at high temperatures such as in the summer, and is suitable for environmental conservation that does not use chlorofluorocarbon, and since it uses heating system equipment as such cooling equipment, it is inexpensive and energy-saving, As air to be sent indoors, it is possible to easily and surely obtain air that provides a cool feeling as it becomes low temperature and humidity.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 and FIG. 2 are explanatory views showing an embodiment of the air heat collecting solar dehumidifying and cooling system of the present invention, and show the state of movement in summer.

  First, the outline of the air heat collecting solar system will be described with reference to FIG. 5. As a solar heat collecting portion, an air flow path 2 having a roof gradient is formed immediately below the roof plate 1, and its lower surface is a heat insulating material such as glass wool. It constitutes as a heat insulation layer which arranged. One end of the air flow path 2 is opened as an outside air inlet 3 in an underside of the eaves or in a shed space for shed ventilation, and the other end is communicated with a ridge duct 4 as a heat collection box made of a heat insulating material. Near the top of the roof 1, a glass plate 25 is provided above the metal plate. A temperature sensor 61 is provided in the building duct 4.

  The temperature of the heat collection air at the roof is limited as a result of the heat loss to the outside air through the roof plate 1 at the same time as the solar heat acquisition of the roof plate 1 by the metal plate, and the rising temperature at the heat collecting surface of the roof plate 1 alone. However, by further covering the top of the roof plate 1 with the glass plate 25, the rising limit of the temperature of the heat collecting air can be raised to enable higher temperature heat collecting, and the influence of the external wind on the heat collecting temperature is reduced. can do.

  A building temperature sensor 61 is provided in the building duct 4, a room temperature sensor 62 is provided indoors, and an outside temperature sensor 63 is provided outdoors.

  In the figure, 5A and 5B are handling boxes as air conditioners that are connected to the solar heat collector and send air into the room. As shown in detail in FIGS. Damper boxes 6a and 8a each including 8 are provided, and a first desiccant module 50, a cooling coil 51, a second desiccant module 52, and a fan 7 are incorporated.

  The first desiccant module 50 and the second desiccant module 52 are obtained by storing an adsorbent in a container formed in a flat cage shape with a mesh material. In the illustrated example, the first desiccant module 50 and the second desiccant module 52 are arranged in a V shape so that their lower ends are coupled. However, as another embodiment, other arrangements such as an oblique arrangement in parallel are possible.

  Silica gel was used as the adsorbent and filled in the first desiccant module and the second desiccant module.

  The cooling water may be connected to the cooling coil 51 and the heat dissipating coil arranged inside the well (not shown) assuming circulation of the well with a circulation pipe that circulates the coolant with a pump. Cooling tower cooled water may be substituted.

  One of the handling box 5A, 5B on the outlet side of the outlet damper 8 is opened to the outside by an exhaust duct 9 and the other is connected to the upper end of the falling duct 10. The lower end of the falling duct 10 opened to the air circulation space 13 between the thermal storage soil concrete 11 and the floor panel 12, and an air outlet 14 from the air circulation space 13 to the room was provided.

  One of the inflow sides of the handling boxes 5A, 5B on the inlet damper 6 side is communicated with the ridge duct 4 via the connection duct 53, and the other is connected to the upper end of the falling duct 54. Either one of the falling duct 54 connected to the handling box 5A and the falling duct 54 connected to the handling box 5B may be joined in the middle of the other.

  In the present embodiment, the floor has a two-layer structure having a seismic isolation pit 55 under the thermal storage interstitial concrete 11, and the lower end of the falling duct 54 is opened to the seismic isolation pit 55.

  Note that the lower end of the falling duct 54 may be opened not in the seismic isolation pit 55 but in the air circulation space 55a.

  In the figure, 56 is an exhaust duct at the time of excess heat collection, one end is connected to the ridge duct 4 and the other end is opened outdoors. The exhaust ducts 56 were joined together, and a forced exhaust fan 57 was provided at the end.

  The connection duct 53 from the ridge duct 4 to the handling box 5A is branched in the middle, and a motor damper 58a is provided in the middle of the branch duct 60, and the tip is placed in the middle of the connection duct 53 from the ridge duct 4 to the handling box 5B. Merge. The branch duct 60 and the motor damper 58a can be omitted by communicating with the ridge duct 4.

  Motor dampers 58 b and 58 c are also provided in the middle of the exhaust duct 56. Also in this case, the motor damper 58c can be eliminated by communicating with the ridge duct 4, and the exhaust duct 56 can be prevented from being complicated.

  Next, the usage will be described. As shown in FIG. 4, the motor damper 58 a is closed at the time of collecting heat in winter, and the inlet damper 6 closes the connection port of the falling duct 54 and connects to the building duct 4. Open the connection port. Further, the outlet damper 8 closes the connection port of the exhaust duct 9 and allows the connection port of the fan 7 and the falling duct 10 to communicate with each other. The cooling coil 51 does not act.

  The roof plate 1, which is a metal plate, warms the outside air that has entered the air flow path 2, and the warmed air rises along the gradient and is collected in the ridge duct 4 before entering the handling boxes 5A and 5B by the fan 7. Then, it flows down from the handling boxes 5 </ b> A and 5 </ b> B through the falling duct 10 and enters the air circulation space 13 between the thermal storage soil concrete 11 and the floor panel 12. In this air circulation space 13, heated air directly warms under the floor surface via the floor panel 12, stores heat in the heat storage soil concrete 11, and blows out directly into the room as hot air from the blowout port 14. Performs 3 types of heating.

  The heat collection operation is performed when the temperature sensor 61 of the building duct 4 is 30 ° C. or higher.

In summer, on the other hand the handling box 5A, 5B either performs operation dehumidification handling box 5A in FIG. 1, the suction air seismic isolation pit 55, dehumidification in the first desiccant module 50 incorporates low temperature high-humidity air Then, the air that has become intermediate temperature and low humidity is cooled by the cooling coil 51, and further, evaporative cooling is performed using the moisture adsorbed by the second desiccant module 52 during the regeneration operation, and the air that has become low temperature and intermediate humidity falls. It is sent into the room through the duct 10 via the underfloor space.

  The other handling box 5B performs the regeneration operation, and the roof plate 1 which is a metal plate warms the outside air that has entered the air flow path 2, and this warmed air rises along the gradient and collects in the ridge duct 4. The collected high-temperature and low-humidity collected air enters the handling box 5B, and after the first desiccant module 50 is dried, it becomes medium-temperature and medium-humidity.

  This medium-temperature medium-humidity air is cooled by the cooling coil 51, becomes low temperature and high humidity, adsorbs moisture to the second desiccant module 52, and is then exhausted by the exhaust duct 9.

  The above dehumidifying cooling operation is performed when the building temperature ≧ 40 ° C., and when the building temperature ≧ 90 ° C., the motor dampers 58 b and 58 c are opened and the forced exhaust fan 57 is used to prevent the building temperature from rising excessively. Exhaust outdoors.

  When the desiccant cannot adsorb water vapor, the dehumidifying operation and the regeneration operation of the handling boxes 5A and 5B are alternated as shown in FIG. The dried desiccant is operated to adsorb water vapor and dehumidify and cool, and the saturated desiccant is operated to dry and regenerate with the collected air.

  As shown in FIG. 3, the outside air intake operation is performed at night in summer. This is when the building temperature ≦ room temperature−2 ° C. and the outside air temperature ≦ room temperature−3 ° C. However, when the room temperature ≦ 23 ° C., the outside air intake operation stops.

  For such an operation flow, switching control is performed according to the outlet humidity and time of either the first desiccant module 50 or the second desiccant module 52 during the regeneration operation, for example, the first desiccant module 50.

  The time when the outlet humidity of the first desiccant module 50 reaches the set value is compared with the switch set time, and if either reaches the set value, the switching operation is performed.

  As the outlet humidity of the first desiccant module 50, there are a method using a measured value by a humidity sensor and a method using a calculated value for obtaining the outlet humidity of the first desiccant module 50 from the inlet temperature, the outlet temperature and the outside air temperature humidity of the first desiccant module. . The method using measured values has the convenience of being able to control the measured values as they are, but the high-performance humidity sensor is expensive, and the sensor part needs to be corrected every year, resulting in considerable maintenance costs. is there. The feature of the method using the calculated value is that it is controlled by an inexpensive and semi-permanent temperature sensor.

  The experimental results for confirming the effects of the present invention will be described below. As a method of operation, the solar dehumidification cooling system is operated according to the temperature of the collected air, but switching between regeneration operation and dehumidification operation is a method that uses the desiccant module of the desiccant air conditioner to regenerate the dehumidification cooler even a little (dehumidification cooler). Priority) and a method of completely regenerating and using it for dehumidification cooling (regeneration priority) can be considered.

  In the experiment, if the ridge temperature (collected air temperature) is 40 ° C. or higher, the solar dehumidifying cooling system is operated, switching operation is performed at a time interval of 30 minutes as the dehumidifying cooling priority, and the regeneration priority is the first. When the relative humidity at the outlet of the desiccant module decreased to 10%, two types of experiments were performed in which it was determined that regeneration was complete and switching operation was performed.

  FIG. 8 and FIG. 9 show the meteorological data of the dehumidifying cooler priority experiment and the regeneration priority experiment. Both are mostly sunny days, and the weather conditions of temperature and relative humidity are similar. FIG. 10 and FIG. 11 show the experimental results giving priority to dehumidification cooling. Around 7:20 in the morning, the ridge temperature reached 40 ° C and the operation started. At around 17:30, the ridge temperature became less than 40 ° C and the operation was stopped. In the switching operation, the handling box 5A starts from the dehumidifying operation and the handling box 5B starts from the regeneration operation, and the regeneration operation and the dehumidifying operation are performed alternately every 30 minutes. Although the temperature of the building suddenly decreases around 11:00 due to the influence of local clouds, it gradually increases and reaches 90 ° C. The reason why the building temperature fluctuates up and down at 90 ° C. between 12:10 and 20 minutes is that when the building temperature reaches 90 ° C. or higher, the forced exhaust fan 57 for preventing overheating is controlled to operate.

  The temperature difference between the inlet and outlet air of the handling box 5A during the regeneration operation increases from morning to noon and decreases from noon to evening. This can also be seen from the variation of the outlet relative humidity of the first desiccant module 50 in FIGS. 10b) and 11b). This is considered to be because, as in the first desiccant module 50, the regeneration and dehumidification switching operations were started in the morning and the regeneration was approached in the middle of the day, and the building temperature decreased in the evening. The temperature difference between the inlet and outlet air of the first desiccant module 50 during the dehumidifying operation gradually increases from the morning, and the difference is larger than the morning until the operation stops in the evening.

  The temperature difference between the inlet and outlet air of the second desiccant module 52 is substantially the same during the regeneration operation and during the dehumidification operation, and it can be seen that the amount adsorbed during the regeneration operation is used as it is during the dehumidification operation. In the morning, the difference between the temperature difference between the inlet and outlet air of the first desiccant module 50 and the temperature difference between the inlet and outlet air of the second desiccant module 52 is small during the dehumidifying operation. As a result, as can be seen from the fluctuations in the absolute humidity at the inlet and outlet of the handling boxes 5A and 5B in FIGS. 10c) and 11c), almost no dehumidifying effect of the entire system was observed until 11:00.

  FIG. 12 and FIG. 13 show the results of the reproduction priority experiment. Operation started at around 7:30 in the morning and stopped at around 17:30. In the morning, based on the results of the dehumidifying cooler priority experiment in which the dehumidifying effect of the entire system was not observed, the first desiccant module 50 of the pair of handling boxes 5A and 5B was firmly regenerated before dehumidifying operation was started. Therefore, the handling box 5B is stopped during the regeneration operation.

  After that, the regeneration operation and the dehumidifying operation are performed at the same time, but when the regeneration operation handling box is completely regenerated, the operation was switched. As shown in FIG. 12, in the handling box 5A, the relative humidity at the outlet of the first desiccant module 50 was changed from about 40% to 10% in about 2 hours and 30 minutes from 7:30 to 10:00. In particular, the air temperature at the outlet of the first desiccant module 50 rises rapidly from 9:00 to 10:00, and the relative humidity drops rapidly.

  Since the dehumidifying operation was started after the regeneration, the dehumidifying effect of the entire system can be seen from 10 o'clock as can be seen from the fluctuations in the absolute humidity at the inlet and outlet of the handling box 5A. The reason why the unexpected measured value at 10:00 when the regeneration operation is switched to the dehumidifying operation is because the fan of the handling box 5A has stopped for about 5 minutes.

  As shown in FIG. 13, the handling box 5B has been regenerated in about 1 hour from 10:00 because the building temperature has been high since the start of the regeneration operation. Regeneration is completed in about 30-50 minutes from 11:00 to 15:30, but after that, it is difficult to regenerate until the relative humidity at the outlet of the first desiccant module 50 becomes 10%, Since the experiment results prioritizing dehumidification cooling showed that the dehumidification capacity was high even when the regeneration capacity was reduced, switching operation was performed every hour.

  As a result, the dehumidifying effect of the entire system was observed until the temperature of the building was lower than 40 ° C. and the operation was stopped, as can be seen from the fluctuations in the absolute humidity of the handling boxes 5A and 5B in FIGS. 12c) and 13c). The dehumidifying effect of the handling box 5B can be seen by 10 o'clock when the operation is stopped. Ventilation fans are used for 24 hours ventilation, and outside air is introduced not only from the ventilation opening in the air-conditioned room but also through the handling box. Because it is done.

  In addition, the forced exhaust fan 57 for preventing overheating is controlled in three stages: weak (building temperature of 90 ° C or higher), medium (building temperature of 95 ° C or higher), and strong (building temperature of 100 ° C or higher). The building temperature is moving in three stages at ~ 12: 30.

  Prototype the air heat collection type solar dehumidification cooler system of the present invention, and after carrying out the operation experiment of dehumidification cooler priority (control by time interval) and regeneration priority (control by desiccant module outlet relative humidity) It was found that the regeneration-priority operation method of starting the dehumidification operation is more effective. Further, it was confirmed that the forced exhaust fan 57 for preventing overheating operates as controlled.

It is explanatory drawing of the dehumidification cooler 1 of the motion of the daytime of the summer which shows one Embodiment of the air heat collection type | formula solar dehumidification cooler system of this invention. It is explanatory drawing of the dehumidification cooler 2 of the motion of the daytime of the summer which shows one Embodiment of the air heat collection type | formula solar dehumidification cooler system of this invention. It is explanatory drawing of the motion at night of the summer which shows one Embodiment of the air heat collection type | formula solar dehumidification cooling system of this invention. It is explanatory drawing of the motion in winter which shows one Embodiment of the air heat collection type | formula solar dehumidification cooling system of this invention. It is explanatory drawing which shows the outline | summary of the air heat collection type | formula solar. It is a side view of a handling box. It is a top view of a handling box. It is a graph which shows the weather data 1 of an experimental result. It is a graph which shows the weather data 2 of an experimental result. It is a graph which shows the experimental result No. 3. It is a graph which shows the experimental result No. 4. It is a graph which shows the experimental result No. 5. It is a graph which shows the experimental result 6th. It is explanatory drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Roof board 2 ... Air flow path 3 ... Outside air intake 4 ... Building duct 5 ... Handling box 5A, 5B ... Handling box 6 ... Inlet damper 6a ... Damper box 7 ... Fan 8 ... Outlet damper 8a ... Damper box 9 ... Exhaust Duct 10 ... Falling duct 11 ... Thermal storage soil concrete 12 ... Floor panel 13 ... Air circulation space 14 ... Air outlet 15 ... Hot water supply coil 22 ... Circulation duct 23 ... Suction port 25 ... Glass plate 26 ... Fan 27 ... Handling box 28 ... Outside air intake duct 29 ... Inflow rate adjusting damper 30, 31 ... Adsorbent filling container 32 ... Adsorbent 33, 34 ... Cycle switching damper 35 ... Air supply duct 36 ... Exhaust duct 37 ... Radiation coil 38 ... Cooling coil 39 ... Pump 40 ... Watering equipment 41 ... auxiliary heating coil 50 ... first desiccant module 51 Cooling coil 52 ... second desiccant module 53 ... connecting duct 54 ... falling duct 55 ... seismic isolation pit 55a ... air circulation space 56 ... exhaust duct 57 ... forced exhaust fans 58a, 58b, 58c ... motor damper 60 ... branch duct 61 ... Building temperature sensor 62 ... Room temperature sensor 63 ... Outside air temperature sensor

Claims (1)

A handling box type desiccant air conditioner that has a damper box at the front and rear , connected to the solar heat collector and sends air into the room, and incorporates a first desiccant module, cooling coil, second desiccant module, and fan. It is a batch system that performs regeneration operation and dehumidification operation at the same time in a batch system that switches between regeneration operation and dehumidification operation.
During the regeneration operation, the high-temperature, low-humidity collected air dries the first desiccant module, and then becomes medium-temperature, medium-humidity. Is exhausted after adsorbing,
In the dehumidifying operation, low temperature and high humidity outside air is taken in and dehumidified by the first desiccant module, and the air that has become intermediate temperature and low humidity is cooled by the cooling coil, and further, the moisture adsorbed by the second desiccant module during the regeneration operation is used. perform evaporative cooling, Ri feed air becomes wet during cold into the room,
The switching operation between the regeneration operation and the dehumidifying operation is performed by comparing the time when the outlet humidity of the desiccant module of the first desiccant module and the second desiccant module of the desiccant air conditioner at the time of the regeneration operation reaches the set value and the switching set time. Air-collecting solar dehumidification cooling system , which is performed when either reaches the set value .

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