WO2011111753A1 - デシカント空調装置 - Google Patents
デシカント空調装置 Download PDFInfo
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- WO2011111753A1 WO2011111753A1 PCT/JP2011/055545 JP2011055545W WO2011111753A1 WO 2011111753 A1 WO2011111753 A1 WO 2011111753A1 JP 2011055545 W JP2011055545 W JP 2011055545W WO 2011111753 A1 WO2011111753 A1 WO 2011111753A1
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- Prior art keywords
- air
- desiccant
- air flowing
- heat exchanger
- introduction
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1072—Rotary wheel comprising two rotors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Definitions
- the present invention relates to a desiccant air conditioner that utilizes dehumidification or humidification and sensible heat exchange.
- the desiccant air-conditioning system is attracting attention as a future air-conditioning system because it cools after dehumidifying the air, so there is no risk of mold and bacteria breeding, and it does not use chlorofluorocarbons.
- FIG. 9 shows a configuration of a general desiccant air conditioner a. That is, in the desiccant air conditioner a, the flow of the air SA and RA is opposite to each other in the introduction path b for flowing the air SA from the outside to the room and the discharge path c for flowing the air RA from the room to the outside. And a desiccant rotor d and a sensible heat rotor e are provided so as to straddle the introduction path b and the discharge path c.
- the air SA taken into the introduction path b from the outside is dehumidified by the desiccant rotor d, cooled by the sensible heat rotor e, and then supplied to the room.
- the air RA taken into the discharge path c from the room is heat recovered by the sensible heat rotor e, further heated by the heater f, then absorbed by the desiccant rotor d and exhausted to the outdoors.
- the desiccant rotor d is formed in a disc shape having air permeability by a moisture absorbing material, and is provided so as to be orthogonal to the flow of the air SA, RA in the introduction path b and the discharge path c, and rotates. However, it is configured to repeat sorption (moist moisture absorption) and desorption (moisture release) by alternately contacting the air SA and RA passing through the introduction path b and the discharge path c.
- the desiccant rotor d absorbs moisture from the air SA passing through the introduction path b, but when the rotor d moves to the discharge path c due to rotation, the desiccant rotor d releases moisture to the air RA passing through the discharge path c. Then, the dehumidifying ability is regenerated, and then the desiccant rotor d is rotated again to move to the introduction path b. Thereafter, the same operation is repeated repeatedly.
- the dehumidifying capacity is affected by the performance of the desiccant rotor d, so that there is a limit to the ability to adjust humidity and temperature.
- the desiccant rotor d since the desiccant rotor d generates moisture when it absorbs air from the air SA passing through the introduction path b, the moisture absorption capacity is lowered and there is a limit in increasing the degree of drying.
- the air from the introduction path is guided to the desiccant rotor and dehumidified in the first dehumidification region, and further guided to the heat exchanger to exchange heat with the air from the discharge path. Then, it is guided to the desiccant rotor, dehumidified in the second dehumidifying region, further heat-exchanged with the low heat source of the heat pump, cooled, and then supplied indoors.
- the air from the discharge path is heated by exchanging heat with the air from the introduction path, and further heated by the heat source of the heat pump, and then guided to the desiccant rotor to heat the regeneration region, The moisture retained in the regeneration area is released to regenerate the moisture absorption capacity of the desiccant rotor.
- Desiccant air conditioners As shown in Patent Document 2, a desiccant rotor having one dehumidifying region through which air in the introduction passage passes and two regeneration regions through which air in the discharge passage passes is used. Desiccant air conditioners have been proposed.
- the air from the introduction path is led to the desiccant rotor and dehumidified in the dehumidification region, and further led to the heat exchanger to exchange heat with the air from the discharge path to be cooled. Furthermore, heat is exchanged with a low heat source of the heat pump and cooled, and then supplied indoors.
- the air from the discharge passage is heated by exchanging heat with the air from the introduction passage, further heated by the heat source of the heat pump, then branched into two, and passes through one branch passage
- the air to be conducted is guided to the desiccant rotor to heat the first regeneration region, and the moisture retained in the first regeneration region is dehumidified to regenerate the moisture absorption capability of the desiccant rotor.
- the air passing through the other branch path is further heated by the heat source of the heat pump, and then guided to the desiccant rotor to regenerate the second regeneration region.
- JP 9-318129 A Japanese Patent Laid-Open No. 10-267576
- the first dehumidification area and the second dehumidification area are adjacent to each other, the first dehumidification area is dehumidified by the passage of air from the introduction path.
- the desiccant rotor is moved to the second dehumidifying region by the rotation of the desiccant rotor in a state where the desiccant is lowered, and the air from the introduction path has sufficient dehumidifying ability by the desiccant rotor when passing through the second dehumidifying region. It will not be obtained.
- the first regeneration region is the second by the rotation of the desiccant rotor while the dehumidifying capacity is regenerated by the air passing through one branch passage heated by the heat source of the heat pump.
- the air passing through the other branch passage must be further heated by the heat source of the heat pump, which complicates the structure. .
- the air flow from the exhaust path is branched into two regeneration areas. It will not be possible to demonstrate the ability to play.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a desiccant air conditioner that can effectively exhibit the dehumidifying ability of the desiccant rotor with a simple configuration.
- a desiccant air conditioner for solving the above-described problems includes an introduction path for introducing air from the outside into the room, a discharge path for discharging air from the room to the outside, and air in the air flowing through the introduction path.
- a desiccant rotor designed to regenerate dehumidification capacity by desorbing moisture by adsorbing moisture and releasing moisture into the air flowing through the discharge path, and a heat exchanger for heating to heat the air in the discharge path
- the desiccant rotor passes through the air in the introduction passage
- the humidity control area and the regeneration area through which the air in the discharge path passes are formed alternately, and the air flowing through the introduction path flows through the two humidity control areas in series, and the air flowing through the discharge path is two Flows in the playback area in series Controller, depending on the operating section of the cooling and de
- a desiccant air conditioner for solving the above-described problems includes an introduction path for introducing air from the outside into the room, a discharge path for discharging air from the room to the outside, and air in the air flowing through the introduction path.
- a desiccant rotor designed to regenerate dehumidification capacity by desorbing moisture by adsorbing moisture and releasing moisture into the air flowing through the discharge path, and a heat exchanger for heating to heat the air in the discharge path
- the desiccant rotor passes through the air in the introduction passage
- the humidity control area and the regeneration area through which the air in the discharge path passes are formed alternately, and the air flowing through the introduction path flows through the two humidity control areas in series, and the air flowing through the discharge path is two Flows in the playback area in series Controller, depending on the operating section of the cooling and de
- a desiccant air conditioner for solving the above-described problems includes an introduction path for introducing air from the outside into the room, a discharge path for discharging air from the room to the outside, and air in the air flowing through the introduction path.
- a desiccant rotor designed to regenerate dehumidification capacity by desorbing moisture by adsorbing moisture and releasing moisture into the air flowing through the discharge path, and a heat exchanger for heating to heat the air in the discharge path
- the desiccant rotor includes a humidity control region through which the air in the introduction passage passes and the discharge passage.
- the humidity control area upstream of the road Between the downstream side of the humidity control regions, by heat exchange with cold water or cold refrigerant, it is provided with a cooling heat exchanger to lower the temperature of the air from the upstream side of the humidity control region.
- a desiccant air conditioner for solving the above-described problems includes an introduction path for introducing air from the outside into the room, a discharge path for discharging air from the room to the outside, and air in the air flowing through the introduction path.
- a desiccant rotor designed to regenerate dehumidification capacity by desorbing moisture by adsorbing moisture and releasing moisture into the air flowing through the discharge path, and a heat exchanger for heating to heat the air in the discharge path
- the desiccant rotor includes a humidity control region through which the air in the introduction passage passes and the discharge passage. Two regeneration areas through which air passes are formed alternately, the air flowing through the introduction path flows through the two humidity control areas in series, and the air flowing through the discharge path is heated by the heat exchanger for heating. Divide the two playback areas This invention was made to flow in the column.
- a desiccant air conditioner for solving the above-described problems includes an introduction path for introducing air from the outside into the room, a discharge path for discharging air from the room to the outside, and air in the air flowing through the introduction path.
- a desiccant rotor designed to regenerate dehumidification capacity by desorbing moisture by adsorbing moisture and releasing moisture into the air flowing through the discharge path, and a heat exchanger for heating to heat the air in the discharge path
- the desiccant rotor includes a humidity control region through which the air in the introduction passage passes and the discharge passage.
- a desiccant air conditioner for solving the above-described problems includes an introduction path for introducing air from the outside into the room, a discharge path for discharging air from the room to the outside, and air in the air flowing through the introduction path.
- a desiccant rotor designed to regenerate dehumidification capacity by desorbing moisture by adsorbing moisture and releasing moisture into the air flowing through the discharge path, and a heat exchanger for heating to heat the air in the discharge path
- a desiccant air conditioner comprising a sensible heat exchanger that exchanges heat between the air flowing through the passage and the air flowing through the discharge passage, and a control device that controls them, the control device discharges during the heating and humidifying operation. Condensate drain generated when the air flowing through the passage is cooled by the sensible heat exchanger is provided with control to supply hot water to the heating heat exchanger provided for the cooling and dehumidifying operation to heat or evaporate it. Is.
- the ability of the desiccant rotor can be effectively exhibited.
- (A) is a schematic block diagram in the horizontal cross section of the desiccant air conditioner which concerns on this invention
- (b) is a schematic block diagram in the same vertical cross section. It is a refrigerant circuit figure explaining the outline of the whole composition of the desiccant air conditioner concerning the present invention. It is an air line figure which shows the characteristic of the discharge air at the time of air_conditionaing
- (A) is a graph showing the relationship between the dehumidifying ability of the desiccant rotor in the rotating direction during cooling and the temperature of the air passing through the desiccant rotor, and (b) is the humidifying ability of the desiccant rotor in rotating direction during heating.
- (A) is a graph which shows the relationship between the rotation speed of the desiccant rotor at the time of cooling, and cooling dehumidification efficiency
- (b) is a graph which shows the relationship between the rotation speed of the desiccant rotor at the time of heating, and heating humidification efficiency.
- It is a refrigerant circuit figure explaining the outline of the whole structure of the desiccant air conditioner which concerns on other embodiment of this invention. It is a refrigerant circuit figure explaining the outline of the whole structure of the desiccant air conditioner which concerns on other embodiment of this invention.
- (A) is a top view which shows the normal desiccant rotor used for the desiccant air conditioner of this invention
- (b) is a top view which shows the desiccant rotor of other embodiment used for the desiccant air conditioner of this invention. It is a schematic explanatory drawing which shows the whole structure of the conventional desiccant air conditioner.
- FIG. 1 shows an outline of the overall configuration of a desiccant air conditioner 1 according to the present invention
- FIG. 2 shows a refrigerant circuit of the desiccant air conditioner 1
- FIG. 3 shows an air line diagram when the desiccant air conditioner 1 is in a cooling operation. Is shown.
- the desiccant air conditioner 1 includes an introduction path 11 for introducing the air SA from the outside into the room, a discharge path 12 for discharging the air RA from the room to the outside, and the air SA flowing through the introduction path 11.
- the desiccant rotor 2 adapted to adsorb moisture and dehumidify, release moisture into the air RA flowing through the discharge passage 12 to regenerate the dehumidification capability, and heating heat for heating the air RA in the discharge passage 12
- the sensible heat exchanger 4 that exchanges heat between the exchanger 3 and the air SA that flows through the introduction path 11 and the air RA that flows through the discharge path 12 is provided.
- the desiccant rotor 2 includes the sensible heat exchanger 4.
- the first humidity control region 2a and the second humidity control region 2b through which the air SA passes and the first regeneration region 2c and the second regeneration region 2d through which the air RA in the discharge path 12 pass are alternately arranged. Is.
- the desiccant air conditioner 1 is configured to be accommodated in a casing 10 having a length of 1370 mm, a width of 820 mm, and a height of 460 mm, and the flow of the air SA in the introduction path 11 and the air RA in the discharge path 12 is determined by these introduction paths 11. And fans 13 and 14 provided in the discharge path 12, respectively.
- the desiccant rotor 2 can be freely rotated in the forward and reverse directions by driving a motor 15 that meshes with the outer peripheral edge thereof. The driving of the fans 13 and 14 and the motor 15 is controlled by the control device 16.
- Air SA introduced into the introduction path 11 from the outside is purified by the purification filter 17.
- the material of the desiccant rotor 2 is not particularly limited as long as it is made of a material having sorption properties and desorption properties that are used in a normal desiccant air conditioner 1, and any material can be suitably used.
- Specific examples include synthetic silica gels, cross-linked polyacrylate high moisture absorbing / releasing materials, natural silica alumina type desiccants, and ceramic type desiccants such as molecular sieves.
- the definition of the crosslinked polyacrylate-based high moisture absorbing / releasing material is not particularly limited as long as it is used for this type of desiccant rotor 2, but the increase in nitrogen content by hydrazine crosslinking is usually 1.
- carboxylic acid group of 0 to 10.0% by weight, carboxylic acid group of 1.0 to 5.0 mmol / g and amide group introduced into the balance is used, the pH is always 7.5 to 8.0. Therefore, it can be suitably used because it has a performance with a pH buffering ability to maintain a high pH and also has antibacterial properties and deodorizing action.
- the desiccant rotor 2 is formed in a ring shape in which a through passage 20 penetrating the desiccant rotor 2 is formed at the center of a thick disc.
- the through passage 20 is configured such that air RA flows from the upstream first regeneration region 2c to the downstream second regeneration region 2d in a state where the desiccant rotor 2 is provided in the casing 10. Further, in the desiccant rotor 2 provided in the casing 10, the first humidity control region 2a and the second humidity control region 2b face each other, and the first regeneration region 2c and the second regeneration region 2d face each other.
- the humidity control areas 2a and 2b and the reproduction areas 2c and 2d are alternately configured with a central angle of 90 degrees.
- the air SA passes from one surface 21 to the other surface 22 of the desiccant rotor 2, and in the first regeneration region 2c and the second regeneration region 2d, the desiccant rotor.
- the introduction path 11 through which the air SA passes and the discharge path 12 through which the air RA passes are routed so that the air RA passes from the other surface 22 to the one surface 21.
- the desiccant rotor 2 rotates in the normal rotation direction N by driving the motor 15, and moves in the order of the first humidity control region 2a, the first regeneration region 2c, the second humidity control region 2b, and the second regeneration region 2d. By rotating in the reverse rotation direction R, the first humidity control region 2a, the second regeneration region 2d, the second humidity control region 2b, and the first regeneration region 2c are moved in this order.
- the heating heat exchanger 3 is configured such that heat recovered by the engine exhaust heat recovery device 32 from a heat source 31 of a cogeneration system or a gas heat pump is circulated and supplied by a pump 33.
- the heating heat exchanger 3 is provided at three locations, the two heating heat exchangers 3 are provided in the discharge passage 12, and the one heating heat exchanger 3 is provided in the introduction passage 11.
- One of the heating heat exchangers 3 provided in the discharge path 12 is provided in a path between a sensible heat exchanger 4 and a desiccant rotor 2 described later.
- the other heating heat exchanger 3 is disposed in the through-passage 20 of the desiccant rotor 2, and is provided in a path between the first regeneration region 2 c and the second regeneration region 2 d of the desiccant rotor 2.
- the heat exchanger 3 provided in the introduction path 11 is provided in a path between a sensible heat exchanger 4 described later and the second humidity control region 2b of the desiccant rotor 2.
- the heat exchanger 3 for heating is selectively supplied with heat by opening and closing the electromagnetic valve 34.
- the sensible heat exchanger 4 exchanges heat between the air SA passing through the introduction path 11 and the air RA passing through the discharge path 12, and enters the discharge path 12 from the room to enter the heat exchanger.
- 3 is provided between the discharge path 12 up to 3 and the introduction path 11 through the first humidity control region 2a to the heat exchanger 3.
- the control device 16 performs control of the motor 15 that rotates the desiccant rotor 2, opening and closing of the path to the heat exchanger 3 for heating, control of the pump 33, control of the fans 13 and 14, and the like.
- the cooling operation of the desiccant air conditioner 1 configured as described above will be described with reference to the air diagram of FIG.
- the recovered heat is not supplied to the heating heat exchanger 3 provided in the introduction path 11, but the recovered heat is supplied only to the heating heat exchanger 3 provided in the discharge path 12. Is done. Further, it is assumed that the desiccant rotor 2 rotates in the reverse rotation direction R.
- the air SA introduced from the outside into the introduction path 11 (state A) is dehumidified in the first humidity control region 2a of the desiccant rotor 2, and the adsorption generated when the moisture in the air SA is adsorbed by the desiccant rotor 2.
- the air SA dehumidified and raised in temperature (state B) is sent to the sensible heat exchanger 4 and is cooled by exchanging heat with the air RA passing through the discharge path 12 from the room (state C). ).
- the cooled air SA is dehumidified again in the second humidity control region 2b of the desiccant rotor 2, and further supplied to the room after the humidity is lowered (state D).
- the desiccant rotor is used in the second regeneration region 2d described later between the dehumidification in the first humidity control region 2a and the dehumidification in the second humidity control region 2b. Since the moisture adsorbed by 2 is removed to regenerate the dehumidification capacity, the dehumidification in the second humidity control region 2b can be performed effectively.
- the temperature of the air SA is also increased by the heat of adsorption, but the humidity of the air SA itself is sufficiently decreased by the dehumidification in the first humidity control region 2a. Therefore, the temperature rise of the air SA due to the heat of adsorption in the second humidity control region 2b can be suppressed lower than the temperature rise of the air SA due to the heat of adsorption in the first humidity control region 2a.
- the air SA after passing through the second humidity control region 2b may be further cooled by a cooler (not shown) of another heat pump cycle and then supplied indoors. Good.
- the cooler (not shown) and the sensible heat exchanger 4 are switched so that the order of cooling by the cooler (not shown) and the cooling by the sensible heat exchanger 4 are reversed. It may be what you did.
- the indoor air RA introduced into the discharge path 12 (state E) is sent to the sensible heat exchanger 4 and cools the air SA passing through the introduction path 11 from the outside to raise its temperature (state). F).
- This temperature-raised air RA (state F) is further sent to the heating heat exchanger 3 to be heated and the temperature rises (state G).
- the air RA having increased in temperature (state G) passes through the first regeneration region 2c of the desiccant rotor 2, removes moisture adsorbed on the desiccant rotor 2, and regenerates the desiccant rotor 2.
- the air RA that has absorbed moisture by this regeneration (state H) is further heated by another heat exchanger 3 for heating (state I), and then passes through the second regeneration region 2d. Even in 2d, the moisture adsorbed on the desiccant rotor 2 is removed and the desiccant rotor 2 is regenerated.
- the air RA that has absorbed the water after regeneration (state J) is discharged to the outside.
- the desiccant rotor 2 is rotated in the reverse rotation direction R by the rotation of the motor 15, thereby moving in the order of the first humidity control region 2a, the second regeneration region 2d, the second humidity control region 2b, and the first regeneration region 2c. Therefore, the desiccant rotor 2 that has passed through the second humidity control region 2b can be regenerated in the first regeneration region 2c, and the desiccant rotor 2 that has passed through the first humidity control region 2a can be regenerated in the second regeneration region 2d. Since the air RA does not continuously pass through the one regeneration region 2c and the second regeneration region 2d, the desiccant rotor 2 can be effectively regenerated by the two-stage regeneration.
- the air SA passing through the introduction path 11 is dehumidified in the first humidity control region 2a using the desiccant rotor 2 regenerated in the first regeneration region 2c, and using the desiccant rotor 2 regenerated in the second regeneration region 2d. Since dehumidification is performed in the second humidity control region 2b, the first humidity control region 2a and the second humidity control region 2b are not continuously passed, and therefore, the dehumidification can be effectively performed by two-stage dehumidification.
- rotating the desiccant rotor 2 in the reverse rotation direction R improves the dehumidification energy efficiency during cooling than when rotating the rotation in the normal rotation direction N.
- the operation during heating by the desiccant air conditioner 1 is as follows. That is, at the time of heating, the desiccant air conditioner 1 does not supply the recovered heat to the heat exchanger 3 for heating provided in the discharge path 12, and recovers only to the heat exchanger 3 for heating provided in the introduction path 11. Heat is supplied.
- the air RA introduced into the discharge path 12 from the room is sent to the sensible heat exchanger 4 and is cooled by exchanging heat with the low-temperature air SA passing through the introduction path 11 from the outside.
- the air RA whose relative humidity has been increased by this cooling releases moisture to the first regeneration region 2c and the second regeneration region 2d when passing through the first regeneration region 2c and the second regeneration region 2d of the desiccant rotor 2.
- the low-temperature air SA introduced from the outside into the introduction path 11 passes through the first humidity control region 2a of the desiccant rotor 2
- Heat is exchanged with RA.
- the air SA whose temperature has risen is further sent to the heating heat exchanger 3 to be heated, and the temperature rises.
- the air SA whose temperature has risen is supplied to the room after absorbing moisture adsorbed by the desiccant rotor 2 when passing through the second humidity control region 2 b of the desiccant rotor 2.
- the moisture in the air RA discharged from the discharge path 12 is recovered by simply switching the heating heat exchanger 3 without switching the air flow path from the time of cooling.
- the air SA supplied from the introduction path 11 to the room can be humidified in the first humidity control region 2a and the second humidity control region 2b.
- the desiccant rotor 2 when controlling the motor 15 by the control device 16, the desiccant rotor 2 is rotated in the reverse rotation direction R during cooling, and the desiccant rotor 2 is rotated in the forward rotation direction N during heating, thereby improving the cooling / heating efficiency. Can be achieved.
- FIG. 5 (a) shows the relationship between the dehumidifying energy efficiency during cooling of the desiccant air conditioner 1 and the rotational speed of the desiccant rotor 2
- FIG. 5 (b) shows the humidifying energy efficiency during heating of the desiccant air conditioner 1.
- the relationship with the rotation speed of the desiccant rotor 2 is shown.
- the rotational speed of the desiccant rotor 2 in the most efficient operation differs between the cooling time and the heating time. Therefore, when the control device 16 controls the motor 15, the desiccant rotor 2 is controlled so that the rotation speeds are suitable for cooling and heating.
- This control may be feedback control so as to follow a pre-configured control map, or may simply execute programmed control.
- FIG. 6 shows another embodiment of the desiccant air conditioner 1 according to the present invention. That is, the desiccant air conditioner 1 is an introduction path 11 between the first humidity control region 2a and the second humidity control region 2b, and is provided with cold water or a downstream position after passing through the sensible heat exchanger 4.
- a cooling heat exchanger 5 configured to allow a low-temperature refrigerant to flow is provided.
- the dehumidified cold air can be supplied indoors.
- the cold water or the low-temperature refrigerant flowing through the cooling heat exchanger 5 may be supplied from another heat pump cycle, or may be provided exclusively.
- FIG. 7 shows still another embodiment of the desiccant air conditioner 1 according to the present invention. That is, in this desiccant air conditioner 1, the air in the exhaust passage 12 that has passed through the sensible heat exchanger 4 and the heating heat exchanger 3 flows in parallel into the first regeneration region 2c and the second regeneration region 2d from the room. Thus, the discharge path 12 is branched.
- the desiccant air conditioner 1 see FIG. 2 in which the heating heat exchanger 3 is provided on the upstream side of the first regeneration region 2c and the second regeneration region 2d connected in series. Since the number of heat exchangers 3 can be reduced from two to one, and the exhaust passage 12 can be easily routed, the apparatus can be reduced in size and cost.
- the shape of the desiccant rotor 2 can be a disc shape, not a ring shape in which the through passage 20 is formed.
- This desiccant air conditioner 1 has only one heat exchanger 3 for heating as compared with the desiccant air conditioner 1 shown in FIG. 2, but it is used in applications where the required dehumidification amount is relatively small, or passes through the exhaust passage 12.
- the heating temperature of the air RA to be performed is sufficiently high, or when the flow rate of the air RA passing through the exhaust passage 12 can be sufficiently ensured, the air RA can be used effectively.
- FIG. 8 shows a normal desiccant rotor 2 (see FIG. 8 (a)) used in the desiccant air conditioner 1 according to the present invention and a miniaturized desiccant rotor 23 (see FIG. 8 (b)).
- the downsized desiccant rotor 23 has a central angle set to less than 90 degrees so that the first humidity control region 2a and the second humidity control region 2b are smaller than the first regeneration region 2c and the second regeneration region 2d. Has been.
- the reduced desiccant rotor 23 can increase the first reproduction region 2c and the second reproduction region 2d.
- the outer diameter d1 and the inner diameter d2 of the reduced desiccant rotor 23 are set to the outer diameter D1 of the normal desiccant rotor 2. Even if the overall diameter is reduced by making the diameter smaller than the inner diameter D2, the first reproduction area 2c and the second reproduction area 2d having the same size as the normal desiccant rotor 2 can be secured. Therefore, the desiccant air conditioner 1 that can be heated to a sufficiently high temperature by the heat exchanger 3 for heating and can reduce the flow rate of the air RA flowing through the discharge passage 12 uses the downsized desiccant rotor 23. By doing so, it is possible to reduce the size of the entire apparatus.
- the desiccant rotor 2 having excellent desiccant capacity and regeneration capacity by the desiccant air conditioner 1 has the introduction path 11 for supplying the air SA to the first humidity control region 2a and the second humidity control region 2b, As described above, it can be installed in a space such as the attic of the house, under the floor, inside the wall, etc., because it can be obtained simply by the flow path configuration with the discharge path 12 that supplies the air RA to the one regeneration area 2c and the second regeneration area 2d. It can be formed in a small size.
- the size of the desiccant air conditioner 1 is not particularly limited, and can be appropriately designed according to the air conditioning capacity and the air volume required for the indoor environment. In the case of the desiccant air conditioner 1 shown in FIG.
- air RA flows from the upstream first regeneration region 2c to the downstream second regeneration region 2d through the through passage 20 provided in the desiccant rotor 2.
- the heating heat exchanger 3 is provided in the through-passage 20, the flow path can be easily handled and the heating heat exchanger 3 can be accommodated, and a more compact design can be achieved.
- the air RA introduced from the room into the discharge path 12 is sent to the sensible heat exchanger 4 and passes through the introduction path 11 from the outside. It is cooled by exchanging heat with the air SA.
- the air RA whose relative humidity has been increased by this cooling condenses and generates a drain in the range from the sensible heat exchanger 4 to the first regeneration region 2c of the desiccant rotor 2. Therefore, when such a drain is generated, hot water can be supplied to the heating heat exchanger 3 at this position to heat or evaporate the drain.
- the control device 16 may operate the heating heat exchanger 3 every predetermined time by a timer, or may detect the drain and operate the heating heat exchanger 3. good.
- detecting a drain it may be one that detects the occurrence of a drain based on pre-constructed data such as the temperature and humidity conditions of the drain, or a sensor that directly detects the occurrence of a drain. There may be.
- the heating heat exchanger 3 provided in the path between the sensible heat exchanger 4 and the desiccant rotor 2 is provided in the through passage 20 of the desiccant rotor 2. In order to supply hot water only to the heating heat exchanger 3 provided in the path between the sensible heat exchanger 4 and the desiccant rotor 2, since it is connected in series with the heating heat exchanger 3, These two heating heat exchangers 3 are connected in parallel.
- the heat exchanger 3 for heating is configured such that the heat recovered by the engine exhaust heat recovery device 32 from the heat source 31 of the cogeneration system or gas heat pump is circulated and supplied by the pump 33.
- the heat exchanger 3 for heating is not particularly limited as long as it can heat the air SA in the introduction passage 11 and the air RA in the discharge passage 12. Or a gas burner (not shown).
Abstract
Description
11 導入路
12 排出路
16 制御装置
2 デシカントロータ
20 貫通路
23 デシカントロータ
2a 第一調湿領域
2b 第二調湿領域
2c 第一再生領域
2d 第二再生領域
3 加熱用熱交換器
4 顕熱熱交換器
5 冷却用熱交換器
SA 空気
RA 空気
N 正転方向
R 逆転方向
Claims (6)
- 室外からの空気を室内へと導入する導入路と、室内からの空気を室外へと排出する排出路と、導入路を流れる空気中の水分を吸着して除湿を行うとともに、排出路を流れる空気中に水分を放出して除湿能力を再生するようになされたデシカントロータと、排出路の空気を加熱する加熱用熱交換器と、導入路を流れる空気と排出路を流れる空気との間で熱交換を行う顕熱熱交換器と、これらを制御する制御装置とを備えたデシカント空調装置において、
デシカントロータは、導入路の空気が通過する調湿領域と排出路の空気が通過する再生領域とが、交互に各二つ形成され、
導入路を流れる空気は、二つの調湿領域を直列に流れ、排出路を流れる空気は二つの再生領域を直列に流れ、
制御装置は、冷房除湿または暖房加湿の運転区分によって、デシカントロータの回転方向を反転させる制御を具備したことを特徴とするデシカント空調装置。 - 室外からの空気を室内へと導入する導入路と、室内からの空気を室外へと排出する排出路と、導入路を流れる空気中の水分を吸着して除湿を行うとともに、排出路を流れる空気中に水分を放出して除湿能力を再生するようになされたデシカントロータと、排出路の空気を加熱する加熱用熱交換器と、導入路を流れる空気と排出路を流れる空気との間で熱交換を行う顕熱熱交換器と、これらを制御する制御装置とを備えたデシカント空調装置において、
デシカントロータは、導入路の空気が通過する調湿領域と排出路の空気が通過する再生領域とが、交互に各二つ形成され、
導入路を流れる空気は、二つの調湿領域を直列に流れ、排出路を流れる空気は二つの再生領域を直列に流れ、
制御装置は、冷房除湿または暖房加湿の運転区分によって、デシカントロータの回転速度を変える制御を具備したことを特徴とするデシカント空調装置。 - 室外からの空気を室内へと導入する導入路と、室内からの空気を室外へと排出する排出路と、導入路を流れる空気中の水分を吸着して除湿を行うとともに、排出路を流れる空気中に水分を放出して除湿能力を再生するようになされたデシカントロータと、排出路の空気を加熱する加熱用熱交換器と、導入路を流れる空気と排出路を流れる空気との間で熱交換を行う顕熱熱交換器とを備えたデシカント空調装置において、
デシカントロータは、導入路の空気が通過する調湿領域と排出路の空気が通過する再生領域とが、交互に各二つ形成され、
導入路を流れる空気は、二つの調湿領域を直列に流れ、排出路を流れる空気は二つの再生領域を直列に流れ、
導入路の上流側の調湿領域と、下流側の調湿領域との間に、冷水または低温冷媒との熱交換により、上流側の調湿領域からの空気の温度を低下させる冷却用熱交換器を設けたことを特徴とするデシカント空調装置。 - 室外からの空気を室内へと導入する導入路と、室内からの空気を室外へと排出する排出路と、導入路を流れる空気中の水分を吸着して除湿を行うとともに、排出路を流れる空気中に水分を放出して除湿能力を再生するようになされたデシカントロータと、排出路の空気を加熱する加熱用熱交換器と、導入路を流れる空気と排出路を流れる空気との間で熱交換を行う顕熱熱交換器とを備えたデシカント空調装置において、
デシカントロータは、導入路の空気が通過する調湿領域と排出路の空気が通過する再生領域とが、交互に各二つ形成され、
導入路を流れる空気は、二つの調湿領域を直列に流れ、排出路を流れる空気は加熱用熱交換器で加熱された後、分岐して二つの再生領域を並列に流れるようになされたことを特徴とするデシカント空調装置。 - 室外からの空気を室内へと導入する導入路と、室内からの空気を室外へと排出する排出路と、導入路を流れる空気中の水分を吸着して除湿を行うとともに、排出路を流れる空気中に水分を放出して除湿能力を再生するようになされたデシカントロータと、排出路の空気を加熱する加熱用熱交換器と、導入路を流れる空気と排出路を流れる空気との間で熱交換を行う顕熱熱交換器とを備えたデシカント空調装置において、
デシカントロータは、導入路の空気が通過する調湿領域と排出路の空気が通過する再生領域とが、交互に各二つ形成され、
導入路を流れる空気は、二つの調湿領域を直列に流れ、排出路を流れる空気は二つの再生領域を直列に流れ、
デシカントロータの再生領域の大きさが、調湿領域の大きさよりも小さくなされたことを特徴とするデシカント空調装置。 - 室外からの空気を室内へと導入する導入路と、室内からの空気を室外へと排出する排出路と、導入路を流れる空気中の水分を吸着して除湿を行うとともに、排出路を流れる空気中に水分を放出して除湿能力を再生するようになされたデシカントロータと、排出路の空気を加熱する加熱用熱交換器と、導入路を流れる空気と排出路を流れる空気との間で熱交換を行う顕熱熱交換器と、これらを制御する制御装置とを備えたデシカント空調装置において、
制御装置は、暖房加湿運転時に、排出路を流れる空気が顕熱熱交換器で冷却された際に発生する凝縮ドレンに対し、冷房除湿運転用に設けられた加熱用熱交換器へ温水を供給して加熱または蒸発させる制御を具備したことを特徴とするデシカント空調装置。
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US13/583,354 US20130036913A1 (en) | 2010-03-11 | 2011-03-09 | Desiccant air conditioner |
CN2011800133188A CN102792099A (zh) | 2010-03-11 | 2011-03-09 | 除湿空调装置 |
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JP2010054802A JP5497492B2 (ja) | 2010-03-11 | 2010-03-11 | デシカント空調装置 |
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JP7208562B1 (ja) | 2021-11-09 | 2023-01-19 | ダイキン工業株式会社 | 空気調和装置 |
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JP6188438B2 (ja) * | 2013-06-14 | 2017-08-30 | 大阪瓦斯株式会社 | 空調装置、及びその運転方法 |
US9795919B2 (en) * | 2014-03-21 | 2017-10-24 | 2525 Group, Inc. | Recycling of waste heat by dehumidifier appliance: apparatus and method |
JP6394521B2 (ja) * | 2014-08-21 | 2018-09-26 | 株式会社デンソー | 加湿装置 |
EP3640554B1 (en) * | 2017-06-14 | 2022-04-20 | Daikin Industries, Ltd. | Humidity control unit |
CZ2018337A3 (cs) * | 2018-07-08 | 2019-07-10 | ÄŚeskĂ© vysokĂ© uÄŤenĂ technickĂ© v Praze | Zařízení pro získávání vody z okolního vzduchu s možností autonomního provozu |
GB2576515B (en) * | 2018-08-21 | 2022-05-18 | Ebac Industrial Products Ltd | Desiccant dehumidifier |
TW202235783A (zh) * | 2021-03-09 | 2022-09-16 | 日商夏普股份有限公司 | 除濕機 |
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JP2011190937A (ja) | 2011-09-29 |
CN102792099A (zh) | 2012-11-21 |
US20130036913A1 (en) | 2013-02-14 |
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