JP2016070577A - Air conditioning system and air conditioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latent heat/sensible heat separation type air conditioning system having excellent efficiency.SOLUTION: An air conditioning system 1 includes: a rotor 12 switching between a desiccant function and a whole heat exchange function by changing a rotational frequency, thereby to dehumidify outside air; outside air temperature and humidity acquisition units To, Ho acquiring the temperature and humidity of outside air; and a control unit comparing a value acquired from the outside air temperature and humidity acquisition units To, Ho with a predetermined temperature and humidity condition, thereby to change the rotational frequency of the rotor 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a latent heat and sensible heat separation type air conditioning system and an air conditioning method for separating and processing latent heat and sensible heat.

  FIG. 14 is a diagram illustrating a general desiccant air conditioning system. FIG. 15 is an air diagram of a general desiccant air conditioning system.

  In recent years, a desiccant type air conditioning system 100 that separates and processes latent heat and sensible heat has been used (see Patent Document 1).

As shown in FIGS. 14 and 15, the general desiccant type air conditioning system 100 performs the following processing at high load.
(1) The outside air OA is taken into the first air conditioner 110 and cooled by the precooler 111.
(2) The air cooled by the precooler 111 is dehumidified by the desiccant rotor 112.
(3) The sensible heat of the air dehumidified by the desiccant rotor 112 is taken away by the sensible heat rotor 113.
(4) The air deprived of sensible heat by the sensible heat rotor 113 is blown from the first air conditioner 110 to the second air conditioner 120.
(5) The cooling coil 121 cools the air blown from the first air conditioner 110 to the second air conditioner 120 and the return air RA blown from the living room 130 to the second air conditioner 120.
(6) The air cooled by the cooling coil 121 is blown to the living room 130 as the supply air SA by the fan 122.
(W1) The return air RA blown from the living room 130 is taken into the first air conditioner 110 and heated by the sensible heat rotor 113 using the sensible heat taken in (4).
(W2) The air heated by the sensible heat rotor 113 is further heated by the regenerative heater 115.
(W3) The air heated by the regeneration heater 115 is passed through the desiccant rotor 112 to remove latent heat and blown as exhaust EA.

JP-A-6-221618

  However, in the conventional desiccant type air conditioning system 100 as in the prior art, at a high load, a predetermined amount of regeneration energy for removing the latent heat of the desiccant rotor is required regardless of the cooling amount in the precooler 111. Since the regeneration heater 115 of FIG. 14 (W2) requires a lot of energy, the system efficiency may be worse than that of the total heat exchanger. Further, the desiccant type air conditioning system 100 is required to have high sealing performance and high cost is required.

  An object of the present invention is to solve the above problems and to provide a low-cost and efficient latent heat sensible heat separation type air conditioning system and air conditioning method.

The air conditioning system according to the present invention is:
A combined rotor that dehumidifies the outside air by switching the desiccant function and total heat exchange function by changing the rotation speed,
An outside air temperature / humidity acquisition unit for acquiring the outside air temperature and humidity;
A control unit that controls the rotational speed of the dual-purpose rotor by comparing a value acquired from the outside air temperature and humidity acquisition unit with a predetermined temperature and humidity condition;
It is characterized by providing.

In addition, the air conditioning system according to the present invention includes:
The control unit in advance
A dehumidification line determined from the regeneration temperature before the return air passes through the combined rotor and the performance of the combined rotor;
A predetermined target humidity line;
Obtain the gradient at the time of dehumidification from the performance of the combined rotor, a desiccant gradient line passing through the intersection of the target humidity line and the dehumidification line,
Set
When the outside air humidity is lower than the target humidity line, the total heat exchange mode area in which the combined rotor is used with the total heat exchange function,
When the temperature and humidity of the outside air is between the desiccant gradient line and the target humidity line, the desiccant mode region in which the dual-purpose rotor is used with the desiccant function,
When the temperature and humidity of the outside air is higher than the desiccant gradient line and the target humidity line, a total heat exchange + after-cool mode region in which the combined rotor is used with a total heat exchange function is set.

In addition, the air conditioning system according to the present invention includes:
A precooler that cools outside air before passing through the combined rotor;
A sensible heat rotor that exchanges heat between the outside air that has passed through the combined rotor and the return air blown from the living room;
A mixing unit that mixes the return air blown from the living room with the outside air that has passed through the sensible heat rotor;
An aftercooler that cools the outside air that has passed through the mixing unit and blows air to the room side;
A regenerative heater in which the return air that has passed through the sensible heat rotor is heated and blown to the combined rotor;
It is characterized by providing.

In addition, the air conditioning system according to the present invention includes:
The control unit, in the total heat exchange mode region,
Turn on the combined rotor so that it can be used for the total heat exchange function,
The precooler, the sensible heat rotor, the aftercooler, and the regenerative heater are turned off.

In addition, the air conditioning system according to the present invention includes:
In the desiccant mode region, the control unit
Turn on the combined rotor to use the desiccant function,
Turn on the sensible heat rotor and the regenerative heater,
The precooler and the aftercooler are turned off.

In addition, the air conditioning system according to the present invention includes:
In the total heat exchange + after-cool mode region, the control unit
Turn on the combined rotor so that it can be used for the total heat exchange function,
Turn on the aftercooler,
Turn off the precooler, the sensible heat rotor, and the regenerative heater,
The amount of return air to the mixing unit is controlled according to the latent heat load of the living room.

In addition, the air conditioning system according to the present invention includes:
The control unit is the total heat exchange + after-cool mode region, and when the temperature in the room is lower than a preset temperature,
Turn on the combined rotor to use the desiccant function,
The precooler, the sensible heat rotor, and the regenerative heater are turned on,
The aftercooler is turned off.

The air conditioning method according to the present invention is:
The procedure to obtain the temperature and humidity of the outside air,
Comparing the temperature and humidity of the outside air with a predetermined temperature and humidity condition, and switching the number of rotations of the dual-purpose rotor;
It is characterized by having.

Moreover, the air conditioning method according to the present invention includes:
A dehumidification line determined in advance from the regeneration temperature before the return air passes through the combined rotor and the performance of the combined rotor;
A predetermined target humidity line;
Obtain the gradient at the time of dehumidification from the performance of the combined rotor, a gradient line passing through the intersection of the target humidity line and the dehumidification line,
Steps to set,
When the outside air humidity is lower than the target humidity line, the total heat exchange mode area in which the combined rotor is used with the total heat exchange function,
When the temperature and humidity of the outside air is between the gradient line and the target humidity line, the desiccant mode area in which the dual-purpose rotor is used with the desiccant function,
When the temperature and humidity of the outside air is higher than the gradient line and the target humidity line, a procedure for determining that the dual-purpose rotor belongs to the total heat exchange + after-cool mode region used in the total heat exchange function,
It is characterized by having.

Moreover, the air conditioning method according to the present invention includes:
In the total heat exchange mode region,
It has a procedure of passing outside air through the combined rotor used for the total heat exchange function and cooling and dehumidifying.

Moreover, the air conditioning method according to the present invention includes:
In the desiccant mode region,
Using the combined rotor with a desiccant function, dehumidifying the outside air,
A procedure for removing the heat of the outside air dehumidified by the combined rotor with a sensible heat rotor;
It is characterized by having.

Moreover, the air conditioning method according to the present invention includes:
In the total heat exchange + after-cool mode area,
A procedure for passing outside air through the combined rotor used in the total heat exchange function and cooling and dehumidifying;
When the humidity of the living room is higher than a predetermined setting value, the procedure of mixing the return air blown from the living room with the outside air that has passed through the combined rotor;
A procedure for cooling and dehumidifying the outside air mixed with the return air;
It is characterized by having.

Moreover, the air conditioning method according to the present invention includes:
In the total heat exchange + after-cool mode region, when the temperature in the living room is lower than a preset temperature,
Using the combined rotor with a desiccant function, dehumidifying the outside air,
A procedure for removing the heat of the outside air dehumidified by the combined rotor with a sensible heat rotor;
It is characterized by having.

The air conditioning system according to the present invention is:
A combined rotor that dehumidifies the outside air by switching the desiccant function and total heat exchange function by changing the rotation speed,
An outside air temperature / humidity acquisition unit for acquiring the outside air temperature and humidity;
A control unit that controls the rotational speed of the dual-purpose rotor by comparing a value acquired from the outside air temperature and humidity acquisition unit with a predetermined temperature and humidity condition;
So that
It can be configured by an air conditioning system based on a total heat exchange rotor, and it is possible to provide a low-cost and efficient latent heat sensible heat separation type air conditioning system.

In addition, the air conditioning system according to the present invention includes:
The control unit in advance
A dehumidification line determined from the regeneration temperature before the return air passes through the combined rotor and the performance of the combined rotor;
A predetermined target humidity line;
Obtain the gradient at the time of dehumidification from the performance of the combined rotor, a desiccant gradient line passing through the intersection of the target humidity line and the dehumidification line,
Set
When the outside air humidity is lower than the target humidity line, the total heat exchange mode area in which the combined rotor is used with the total heat exchange function,
When the temperature and humidity of the outside air is between the desiccant gradient line and the target humidity line, the desiccant mode region in which the dual-purpose rotor is used with the desiccant function,
When the temperature and humidity of the outside air is higher than the desiccant gradient line and the target humidity line, set the total heat exchange + after-cool mode area where the combined rotor is used with the total heat exchange function,
The temperature can be accurately controlled according to the state of the outside air.

In addition, the air conditioning system according to the present invention includes:
A precooler that cools outside air before passing through the combined rotor;
A sensible heat rotor that exchanges heat between the outside air that has passed through the combined rotor and the return air blown from the living room;
A mixing unit that mixes the return air blown from the living room with the outside air that has passed through the sensible heat rotor;
An aftercooler that cools the outside air that has passed through the mixing unit and blows air to the room side;
A regenerative heater in which the return air that has passed through the sensible heat rotor is heated and blown to the combined rotor;
So that
The system can be configured with a simple configuration.

In addition, the air conditioning system according to the present invention includes:
The control unit, in the total heat exchange mode region,
Turn on the combined rotor so that it can be used for the total heat exchange function,
Since the precooler, the sensible heat rotor, the aftercooler, and the regeneration heater are turned off,
Efficient operation according to the situation becomes possible.

In addition, the air conditioning system according to the present invention includes:
In the desiccant mode region, the control unit
Turn on the combined rotor to use the desiccant function,
Turn on the sensible heat rotor and the regenerative heater,
Since the precooler and the aftercooler are turned off,
Efficient operation according to the situation becomes possible.

In addition, the air conditioning system according to the present invention includes:
In the total heat exchange + after-cool mode region, the control unit
Turn on the combined rotor so that it can be used for the total heat exchange function,
Turn on the aftercooler,
Since the precooler, the sensible heat rotor, and the regeneration heater are turned off,
Efficient operation according to the situation becomes possible.

In addition, the air conditioning system according to the present invention includes:
The control unit is the total heat exchange + after-cool mode region, and when the temperature in the room is lower than a preset temperature,
Turn on the combined rotor to use the desiccant function,
The precooler, the sensible heat rotor, and the regenerative heater are turned on,
Since the aftercooler is turned off,
Efficient operation according to the situation becomes possible.

The air conditioning method according to the present invention is:
The procedure to obtain the temperature and humidity of the outside air,
Comparing the temperature and humidity of the outside air with a predetermined temperature and humidity condition, and switching the number of rotations of the dual-purpose rotor;
So that
It can be configured by an air conditioning system based on a total heat exchange rotor, and it is possible to provide a low-cost and efficient latent heat sensible heat separation type air conditioning system.

Moreover, the air conditioning method according to the present invention includes:
A dehumidification line determined in advance from the regeneration temperature before the return air passes through the combined rotor and the performance of the combined rotor;
A predetermined target humidity line;
Obtain the gradient at the time of dehumidification from the performance of the combined rotor, a gradient line passing through the intersection of the target humidity line and the dehumidification line,
Steps to set,
When the outside air humidity is lower than the target humidity line, the total heat exchange mode area in which the combined rotor is used with the total heat exchange function,
When the temperature and humidity of the outside air is between the gradient line and the target humidity line, the desiccant mode area in which the dual-purpose rotor is used with the desiccant function,
When the temperature and humidity of the outside air is higher than the gradient line and the target humidity line, a procedure for determining that the dual-purpose rotor belongs to the total heat exchange + after-cool mode region used in the total heat exchange function,
So that
The temperature can be accurately controlled according to the state of the outside air.

Moreover, the air conditioning method according to the present invention includes:
In the total heat exchange mode region,
Since the outside air is passed through the combined rotor used in the total heat exchange function and has a procedure of cooling and dehumidifying,
Efficient operation according to the situation becomes possible.

Moreover, the air conditioning method according to the present invention includes:
In the desiccant mode region,
Using the combined rotor with a desiccant function, dehumidifying the outside air,
A procedure for removing the heat of the outside air dehumidified by the combined rotor with a sensible heat rotor;
So that
Efficient operation according to the situation becomes possible.

Moreover, the air conditioning method according to the present invention includes:
In the total heat exchange + after-cool mode area,
A procedure for passing outside air through the combined rotor used in the total heat exchange function and cooling and dehumidifying;
When the humidity of the living room is lower than a predetermined setting value, the procedure of mixing the return air blown from the living room with the outside air that has passed through the dual-purpose rotor;
A procedure for cooling and dehumidifying the outside air mixed with the return air;
So that
Efficient operation according to the situation becomes possible.

Moreover, the air conditioning method according to the present invention includes:
In the total heat exchange + after-cool mode region, when the temperature in the living room is lower than a preset temperature,
Using the combined rotor with a desiccant function, dehumidifying the outside air,
A procedure for removing the heat of the outside air dehumidified by the combined rotor with a sensible heat rotor;
So that
Efficient operation according to the situation becomes possible.

It is a figure which shows the air-conditioning system of the latent heat sensible heat separation system of this embodiment. It is an air diagram which shows each operation mode area | region of the air-conditioning system of the latent heat sensible heat separation system of this embodiment. The usage status of the first air conditioner in the total heat exchange + after-cool mode area is shown. The air diagram in the total heat exchange + after-cool mode area | region of a 1st air conditioning machine is shown. The use condition of the 1st air conditioner 10 in precool desiccant mode is shown. The air line figure in the precool desiccant mode of the 1st air conditioner 10 is shown. The use condition of the 1st air conditioner 10 in desiccant mode is shown. The air diagram in the desiccant mode of the 1st air conditioner 10 is shown. The use condition of the 1st air conditioner 10 in all the heat exchange modes is shown. The air diagram in the total heat exchange mode of the 1st air conditioner 10 is shown. The use condition of the 1st air conditioner 10 in the total heat exchange mode of another example is shown. The air line figure in the total heat exchange mode of the other example of the 1st air conditioner 12 is shown. The control flowchart of the air conditioning system 1 concerning this embodiment is shown. It is a figure which shows the conventional air conditioning system. It is an air line figure of the conventional air conditioning system. It is a figure which shows the air-conditioning system of a latent heat sensible heat separation system of other embodiment.

  Hereinafter, an embodiment of a latent heat sensible heat separation type air conditioning system 1 according to the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a latent heat sensible heat separation type air conditioning system of the present embodiment.

  The latent heat sensible heat separation type air conditioning system 1 of the present embodiment mixes a part of the return air RA blown from the living room 30 into the outside air OA and blows it to the second air conditioner 20 and also a part of the return air RA. The first air conditioner 10 that exhausts the air as exhaust EA, and the second air conditioner 20 that takes in part of the outside air OA and the return air RA blown from the first air conditioner 10 and blows the air into the living room 30. .

  The first air conditioner 10 includes a precooler 11, a combined rotor 12 having a total heat exchange function and a desiccant function, a sensible heat rotor 13, an aftercooler 14, and a regenerative heater 15. Moreover, between the sensible heat rotor 13 and the aftercooler 14, it has the mixing part 50 which mixes return air RA with external air OA.

  The precooler 11 cools the outside air OA by controlling the flow rate of the cold water by the first control valve CV1.

  The dual-purpose rotor 12 is a rotor that can selectively use a desiccant function and a total heat exchange function according to the number of rotations. The combined rotor 12 functions as a desiccant when the rotational speed is about 2 to 20 rph, and mainly performs dehumidification. The combined rotor 12 functions as total heat exchange when the rotational speed is about 8 to 20 rpm, and mainly performs total heat exchange with the exhaust EA. The rotation speed of the dual-purpose rotor 12 may be changed by changing the rotation speed of the first drive unit M1 or by switching a reduction member (not shown) having a different reduction ratio.

  The sensible heat treatment rotor 13 is rotated by the second driving unit M2, and exchanges sensible heat between the outside air OA and the return air RA. In the mixing unit 50 downstream of the sensible heat rotor 13, the return air RA is mixed with the outside air OA. The amount of the return air RA is controlled by the adjustment damper VD.

  The aftercooler 14 controls the flow rate of cold water by the second control valve CV2 and cools the outside air OA. The aftercooler 14 can raise the target dew point temperature of cooling and dehumidification by mixing the return air RA with the outside air OA in the mixing unit 50, and can use 7 ° C. cold water used in general air conditioning.

  The regeneration heater 15 can raise the temperature of the desiccant rotor regeneration air by using exhaust heat or heat pump room heat. The flow rate flowing through the regenerative heater 15 is controlled by the third control valve CV3.

  The return air RA is blown from the living room 30 to the first air conditioner 10 through the flow path 31. The flow path 31 is provided with an adjustment damper VD so that the flow rate can be adjusted. In addition, you may provide the adjustment damper VD with respect to each ventilation location, respectively.

  The second air conditioner 20 includes a cooling coil 21, a hot water coil 22, and a third fan F <b> 3 for sending air to the living room 30. Since the cooling coil 21 processes only sensible heat, high-temperature cold water (about 14 ° C. to 16 ° C.) can be used, and the efficiency of the refrigerator is improved. The flow rate of the high-temperature cold water is controlled by the fourth control valve CV4. Further, the flow rate of the hot water in the hot water coil 22 is controlled by the fifth control valve CV5.

A first control valve CV1 to a fifth control valve CV5, a first drive unit M1, a second drive unit M2,
The adjustment damper VD is controlled by a control unit (not shown). That is, the control unit can control the rotational speed of the dual-purpose rotor 12 and switch between the desiccant function and the total heat exchange function.

  The input to the control unit is an outside air temperature acquisition unit To that acquires the temperature of the outside air, an outside air humidity acquisition unit Ho that acquires the humidity of the outside air, a room temperature acquisition unit Ti that acquires the temperature of the room 30, and the humidity of the room. Room humidity acquisition unit Hi, first temperature acquisition unit T1 that acquires the temperature of the outside air between the precooler 11 and the combined rotor 12, a second temperature acquisition unit T2 that acquires the temperature of the outside air after the aftercooler 14, and the regenerative heater 15 It is preferable to perform from the 3rd temperature acquisition part T3 which acquires the temperature of the return air after, and the 1st humidity acquisition part H1 which acquires the humidity of the external air after the aftercooler 14. The outside air temperature acquisition unit To and the outside air humidity acquisition unit Ho constitute an outside air temperature and humidity acquisition unit.

  FIG. 2 is an air line diagram showing each operation mode region of the latent heat sensible heat separation type air conditioning system of the present embodiment.

  In the latent heat sensible heat separation type air conditioning system of the present embodiment, the operation mode of the first air conditioner 10 is controlled using an air diagram showing each operation mode region. The latent heat sensible heat separation type air conditioning system of this embodiment forms regions corresponding to each operation mode in the air diagram. Here, the determination method of each operation mode area | region is demonstrated.

  First, a dehumidification line is determined from the regeneration temperature WT3 and the desiccant performance of the combined rotor 12. The dehumidification line is preferably set to about 90%, for example, with the line passing through the regeneration temperature WT3 being 100%. It is not limited to 90%. It is preferable if it is smaller than at least 100%. Then draw the target humidity line. Next, the gradient at the time of dehumidification is calculated | required from the desiccant performance of the combined use rotor 12, and a desiccant gradient line is drawn from the intersection P of a target humidity line and a dehumidification line. These lines are preferably set in advance and stored in the control unit or the storage unit of the external device. The temperature Ta indicates the temperature at the intersection P.

  Then, lower humidity than the target humidity line is the total heat exchange mode region, the desiccant gradient line is between the target humidity line and the desiccant mode region, and the higher humidity than the desiccant gradient line and the target humidity line is the total heat exchange + aftercool mode region. Set. These areas are also preferably set in advance and stored in the control unit or the storage unit of the external device.

  The control unit compares the values acquired from the outside air temperature acquisition unit To and the outside air humidity acquisition unit Ho with each mode region constituting a predetermined temperature and humidity condition, and controls the rotation speed of the dual-purpose rotor 12.

  Next, processing in each mode area will be described.

  First, the total heat exchange + after-cool mode region will be described. In the total heat exchange + after-cool mode region, the combined rotor 12 of the first air conditioner 10 is normally changed to 8-20 rpm with a clutch or the like, and the total heat exchange + after-cool mode used for the total heat exchange function. Process with. However, when the temperature of the living room 30 shown in FIG. 1 is lower than the preset temperature, it is determined that the cooling is supercooling, and the precool desiccant mode is entered. In the total heat exchange + after-cool mode region, in addition to the case where the temperature of the living room 30 is lower than the preset temperature, the pre-cool desiccant mode is used when the fourth control valve CV4 of the second air conditioner 20 is closed. You may decide to move to.

  FIG. 3 shows how the first air conditioner 10 is used in the total heat exchange + after-cool mode. FIG. 4 shows an air diagram in the total heat exchange + after-cool mode of the first air conditioner 10. In FIG. 3, a solid line indicates a device in an ON state, and a broken line indicates a device in an OFF state.

  In the total heat exchange + after-cool mode, the dual-purpose rotor 12 of the first air conditioner 10 is normally used for the total heat exchange function by shifting the rotational speed to 8 to 20 rpm with a clutch or the like. In the total heat exchange + after-cool mode, the after-cooler 14 is used and turned on, and the pre-cooler 11, the sensible heat rotor 13, and the regenerative heater 15 are turned off without being used.

In the total heat exchange + after-cool mode, the latent heat sensible heat separation type air conditioning system 1 is processed as follows.
(1,2) The outside air OA is taken into the first air conditioner 10, the first motor M1 is rotated, the combined rotor 12 is used with the total heat exchange function, and dehumidification is performed by heat exchange with the exhaust.
(3,4) When the first hygrometer H1 is equal to or higher than the set humidity or the second thermometer T2 is equal to or higher than the set temperature, and the hygrometer Hi of the living room 30 shown in FIG. The VD is controlled, and a predetermined amount of the return air RA blown from the living room 30 is mixed by the mixing unit 50 with the outside air OA cooled and dehumidified by the combined rotor 12 used in the total heat exchange function. When the return air RA increases, the humidity in the living room 30 decreases, and when the return air RA decreases, the humidity in the living room 30 increases. That is, since the amount of the return air RA to the mixing unit 50 is controlled according to the latent heat load of the living room 30, efficient operation according to the situation becomes possible.
(5) The outside air OA cooled and dehumidified by the aftercooler 14 is blown from the first air conditioner 10 to the second air conditioner 20.

  In the second air conditioner 20 shown in FIG. 1, the amounts of cold water and hot water flowing through the cooling coil 21 and the hot water coil 22 are controlled by the fourth valve CV4 and the fifth valve CV5, respectively, so that the living room 30 has a predetermined set temperature. To do. That is, the outside air OA blown from the first air conditioner 10 and the return air RA blown from the living room 30 pass through the cooling coil 21 and the hot water coil 22, and are supplied to the living room 30 by the third fan F3 at an appropriate temperature. As blown.

  (W1, W2, W3) The return air RA blown from the living room 30 to the first air conditioner 10 passes through the combined rotor 12 as the total heat exchange rotor, exchanges heat, and blows it as exhaust EA. Note that the sensible heat rotor 13 and the regenerative heater 15 are not used.

  As described above, the first air conditioner 10 of the latent heat sensible heat separation type air conditioning system 1 in the total heat exchange + after-cool mode uses the combined rotor 12 functioning as a total heat exchange rotor to discharge the relatively high temperature outside air OA. Since the dehumidification is performed by heat exchange, high-temperature regenerated air necessary for use as a desiccant rotor is not required, so that it is not necessary to use the regenerative heater 15 and energy for operating the regenerative heater 15 is not necessary. Thus, energy saving can be realized by a general desiccant method.

  However, the air after being dehumidified by the combined rotor 12 is still at a high temperature and higher than the target humidity, and further needs to be cooled and dehumidified. However, if the air is cooled by the aftercooler 14 with about 7 ° C. cold water, the air reaches the target humidity. The amount of dehumidification is insufficient, and latent heat sensible heat separation air conditioning cannot be performed.

  Accordingly, the latent heat sensible heat separation type air conditioning system 1 of the present embodiment, after dehumidifying with the dual-purpose rotor 12, opens the adjustment damper VD, mixes the return air RA with the outside air OA, and controls the amount of air blown into the room. By increasing the total dehumidification amount, 7 ° C. cold water used in general air conditioning can be used as the temperature of the cold water for the aftercooler 14, and efficient dehumidification is possible.

  FIG. 5 shows a usage state of the first air conditioner 10 in the precool desiccant mode. FIG. 6 shows an air diagram of the first air conditioner 10 in the precool desiccant mode. Note that the solid line in FIG. 5 indicates an ON state device, and the broken line indicates an OFF state device.

  In the total heat exchange + after-cool mode region, when the temperature of the living room 30 shown in FIG. 1 is lower than the set temperature by a predetermined value or more, it is determined that the cooling is supercooling, and the pre-cool desiccant mode is entered. In the total heat exchange + after-cool mode region, in addition to the case where the temperature of the living room 30 is lower than the preset temperature, the pre-cool desiccant mode is used when the fourth control valve CV4 of the second air conditioner 20 is closed. You may decide to move to.

  In the precool desiccant mode, the dual-purpose rotor 12 of the first air conditioner 10 is used for the desiccant function by reducing the rotational speed to 2 to 20 rph with a clutch or the like. In the precool desiccant mode, the precooler 11, the sensible heat rotor 13, and the regenerative heater 15 are used because they are used, and the aftercooler 14 is not used and is turned off. In addition, when considering a control error, you may use the aftercooler 14. FIG.

In the precool desiccant mode, the latent heat sensible heat separation type air conditioning system 1 is processed as follows.
(1) The outside air OA is taken into the first air conditioner 10 and precooled by the precooler 11 to a temperature at which the target humidity can be achieved by the dehumidifying ability of the dual purpose rotor 12 used in the desiccant function.
(2) Dehumidifying the pre-cooled outside air OA that is used in the desiccant function by lowering the rotational speed of the combined rotor 12.
(3) The heat of the outside air OA dehumidified by the combined rotor 12 is taken away by the sensible heat rotor 13.
(4, 5, 6) The outside air OA deprived of heat by the sensible heat rotor 13 is closed with the adjustment damper VD so that the return air RA is not mixed, the aftercooler 14 is not used, and the first air conditioner is used as it is. 10 to the second air conditioner 20.

  In the second air conditioner 20 shown in FIG. 1, the amounts of cold water and hot water flowing through the cooling coil 21 and the hot water coil 22 are controlled by the fourth valve CV4 and the fifth valve CV5, respectively, so that the living room 30 has a predetermined set temperature. To do. The outside air OA blown from the first air conditioner 10 and the return air RA blown from the living room 30 pass through the cooling coil 21 and the hot water coil 22 and are blown as air supply SA to the living room 30 by the third fan F3 at an appropriate temperature. Is done.

(W1) The return air RA blown from the room 30 is taken into the first air conditioner 10 and heated by the sensible heat rotor 13 using the heat taken in (3).
(W2) The return air RA heated by the sensible heat rotor 13 is heated by the regenerative heater 15.
(W3) The return air RA heated by the regenerative heater 15 is passed through the dual-purpose rotor 12 having a desiccant function, latent heat is removed from the dual-purpose rotor 12, and the dual-purpose rotor 12 is regenerated and blown as exhaust EA.

  As described above, the latent heat sensible heat separation type air conditioning system 1 in the precool desiccant mode can perform efficient latent heat sensible heat separation air conditioning according to the load, and can cope with it efficiently. Further, by performing precooling with the precooler 11, the room temperature is maintained at an appropriate temperature without reheating even if the indoor sensible heat load is small.

  In addition, in the case of a low sensible heat load in which the room temperature is high and it is difficult to dehumidify with the desiccant dual-purpose rotor 12 and after cooling and dehumidifying, the room temperature decreases. Even in the case of a sensible heat load, reheating is unnecessary and energy is saved.

  Next, the desiccant mode region will be described.

  FIG. 7 shows a usage state of the first air conditioner 10 in the desiccant mode. FIG. 8 shows an air diagram of the first air conditioner 10 in the desiccant mode. In FIG. 7, a solid line indicates a device in an ON state, and a broken line indicates a device in an OFF state.

  In the desiccant mode region, the dual-purpose rotor 12 of the first air conditioner 10 changes the rotational speed to 2 to 20 rph by a clutch or the like, and performs processing in the desiccant mode used for the desiccant function. In the desiccant mode, the sensible heat rotor 13 and the regenerative heater 15 are used and are turned on, and the precooler 11 and the aftercooler 14 are not used and are turned off.

In the desiccant mode, the latent heat sensible heat separation type air conditioning system 1 is processed as follows.
(1,2) By using the desiccant function by reducing the rotational speed of the combined rotor 12, the outside air OA is dehumidified.
(3) The heat of the outside air OA dehumidified by the combined rotor 12 is taken away by the sensible heat rotor 13.
(4, 5, 6) The outside air OA deprived of heat by the sensible rotor 13 is not mixed with the return air RA, the aftercooler 14 is not used, and the first air conditioner 10 to the second air conditioner 20 as it is. Be blown.

  In the second air conditioner 20 shown in FIG. 1, the amounts of cold water and hot water flowing through the cooling coil 21 and the hot water coil 22 are controlled by the fourth valve CV4 and the fifth valve CV5, respectively, so that the living room 30 has a predetermined set temperature. To do. The outside air OA blown from the first air conditioner 10 and the return air RA blown from the living room 30 pass through the cooling coil 21 and the hot water coil 22 and are blown as air supply SA to the living room 30 by the third fan F3 at an appropriate temperature. Is done.

(W1) The return air RA blown from the room 30 is taken into the first air conditioner 10 and heated by the sensible heat rotor 13 using the heat taken in (3).
(W2) The return air RA heated by the sensible heat rotor 13 is heated by the regenerative heater 15.
(W3) The return air RA heated by the regenerative heater 15 is passed through the dual-purpose rotor 12 having a desiccant function, latent heat is removed from the dual-purpose rotor 12, and the dual-purpose rotor 12 is regenerated and blown as exhaust EA.

  As described above, the latent heat sensible heat separation type air conditioning system 1 in the desiccant mode can perform efficient latent heat sensible heat separation air conditioning according to the load, and can cope with it efficiently.

In the desiccant mode, when the humidity Hi of the living room 30 shown in FIG. 1 is lower than the set value, the latent heat sensible heat separation type air conditioning system 1 is processed as follows, as shown in FIG. .
( 1, 2 ) Decreasing the rotational speed of the combined rotor 12 is used for the desiccant function to dehumidify the outside air OA.
( 3 ) The heat of the outside air OA dehumidified by the dual-purpose rotor 12 is taken away by the sensible heat rotor 13.
( 4, 5, 6 ) The outside air OA deprived of heat by the sensible heat rotor 13 is not mixed with the return air RA, the aftercooler 14 is not used, and the first air conditioner 10 to the second air conditioner 20 as it is. Be blown.

(W1) The return air RA blown from the room 30 is taken into the first air conditioner 10 and heated by the sensible heat rotor 13 using the heat taken in (3).
(W2) The return air RA heated by the sensible heat rotor 13 is heated by the regeneration heater 15 to the second regeneration temperature WT2.
( W3 ) The return air RA heated by the regenerative heater 15 is passed through the dual-purpose rotor 12 having a desiccant function, latent heat is removed from the dual-purpose rotor 12, the dual-purpose rotor 12 is regenerated, and blown as exhaust EA.

  That is, by reducing the first regeneration temperature WT1 to the second regeneration temperature WT2, it is possible to save energy by the decrease in the regeneration temperature.

  Next, the total heat exchange mode region will be described. In the total heat exchange mode region, the dual-purpose rotor 12 of the first air conditioner 10 normally changes the rotational speed to 8 to 20 rpm with a clutch or the like, and performs processing in the total heat exchange mode used in the total heat exchange function.

  FIG. 9 shows a usage state of the first air conditioner 10 in the full heat exchange mode. FIG. 10 shows an air diagram in the total heat exchange mode of the first air conditioner 10. In FIG. 9, a solid line indicates an ON-state device, and a broken line indicates an OFF-state device.

  In the total heat exchange mode, the combined rotor 12 of the first air conditioner 10 is normally shifted to 8 to 20 rpm with a clutch or the like and used for the total heat exchange function. In the total heat exchange mode, the precooler 11, the sensible heat rotor 13, the aftercooler 14, the regenerative heater 15, and the adjustment damper VD are not used and are turned off.

In the total heat exchange mode, the latent heat sensible heat separation type air conditioning system 1 is processed as follows.
(1,2) The outside air OA is taken into the first air conditioner 10, the first motor M1 is rotated, and the combined rotor 12 is used with the total heat exchange function to cool and dehumidify.
(3, 4, 5, 6) The outside air OA cooled and dehumidified by the combined rotor 12 used in the total heat exchange function is blown from the first air conditioner 10 to the second air conditioner 20.

  In the second air conditioner 20 shown in FIG. 1, the amounts of cold water and hot water flowing through the cooling coil 21 and the hot water coil 22 are controlled by the fourth valve CV4 and the fifth valve CV5, respectively, so that the living room 30 has a predetermined set temperature. To do. That is, the outside air OA blown from the first air conditioner 10 and the return air RA blown from the living room 30 pass through the cooling coil 21 and the hot water coil 22, and are supplied to the living room 30 by the third fan F3 at an appropriate temperature. As blown. The humidity may be humidified by a humidifier (not shown).

  (W1, W2, W3) The return air RA blown from the living room 30 to the first air conditioner 10 passes through the combined rotor 12 having the total heat exchange function, exchanges heat, and blows it as exhaust EA. Note that the sensible heat rotor 13 and the regenerative heater 15 are not used.

  In this way, the first air conditioner 10 of the latent heat sensible heat separation type air conditioning system 1 in the total heat exchange mode causes the combined rotor 12 to function as a total heat exchange, and thus is less expensive and more efficient than a general desiccant system. Driving can be realized.

  FIG. 11 shows the usage status of the first air conditioner 10 in the total heat exchange mode of another example. FIG. 12 shows an air diagram in the total heat exchange mode of another example of the first air conditioner 12. In FIG. 11, a solid line indicates a device in an ON state, and a broken line indicates a device in an OFF state.

In the total heat exchange mode of another example shown in FIG. 11, the latent heat sensible heat separation type air conditioning system 1 is processed as follows.
(1,2) The outside air OA is taken into the first air conditioner 10, the first motor M1 is rotated, the combined rotor 12 is used with the total heat exchange function, and dehumidification is performed by heat exchange.
(3,4) When the hygrometer Hi of the living room 30 shown in FIG. 1 is higher than a predetermined set value, the outside air OA that has passed through the dual-purpose rotor 12 is bypassed to the external air OA that has not passed through the dual-purpose rotor 12 and the mixing unit Mix at 50. In this case, it is preferable to adjust the sum of the bypass air amount and the rotor passing air amount with a damper (not shown) so as to be the same as the amount of the outside air OA before the bypass.
(5, 6) The mixed outside air OA is blown from the first air conditioner 10 to the second air conditioner 20.

  In this way, the first air conditioner 10 of the latent heat sensible heat separation type air conditioning system 1 in the total heat exchange mode causes the dual-purpose rotor 12 to function as total heat exchange, and the dual-purpose rotor 12 is placed in the outside air OA that has passed through the dual-purpose rotor 12. Since the outside air OA that has not passed is bypassed and mixed, it is possible to suppress the humidity from rising too much only by total heat exchange.

  Next, control of these modes used for the air conditioning system 1 according to the present embodiment will be described.

  FIG. 13 shows a control flowchart of the air conditioning system 1 according to the present embodiment.

  First, in step 1, outside air conditions are acquired (ST1). In the air conditioning system 1 of the present embodiment, the outside air temperature To and the outside air humidity Ho shown in FIG. 1 are acquired as the outside air conditions.

  Subsequently, in step 2, it is determined whether or not the acquired outside air humidity Ho is equal to or higher than the target humidity and the acquired outside air temperature To is equal to or higher than a predetermined temperature and humidity condition (ST2). In the air conditioning system 1 of the present embodiment, the determination in step 2 is preferably equal to or higher than the target humidity and higher than the desiccant dehumidification line using the graph of FIG.

  In step 2, when the acquired outside air humidity Ho is equal to or higher than the target humidity and the acquired outside air temperature To is equal to or higher than a predetermined temperature and humidity condition, in step 3, the outside air OA is in the total heat exchange + after-cool mode region. And set.

  Next, in step 4, it is determined whether the indoor sensible heat load is equal to or greater than the aftercool sensible heat amount (ST4). Specifically, when the first hygrometer H1 is equal to or higher than the set humidity or the second thermometer T2 is equal to or higher than the set temperature, and the hygrometer Hi of the living room 30 shown in FIG. Thermal load> Aftercool sensible heat amount is determined.

  If the indoor sensible heat load is equal to or greater than the aftercool sensible heat amount in step 4, the air conditioning system 1 is set to the total heat exchange + aftercool mode in step 5 (ST5).

  In step 4, if the indoor sensible heat load is less than the aftercool sensible heat amount, in step 6, the air conditioning system 1 is set to the precool desiccant mode (ST6). Since the outside air OA after the after-cooling becomes a low temperature by cooling and dehumidification, if the indoor sensible heat load becomes smaller than the cooling sensible heat amount by the after-cooling, the outside air OA becomes overcooled and needs to be reheated. In order to avoid this, dehumidification with a desiccant is effective.

  In Step 2, when the acquired outside air humidity Ho is equal to or higher than the target humidity and the acquired outside air temperature To is not equal to or higher than the predetermined temperature and humidity condition, in Step 7, the acquired outside air humidity Ho is equal to or higher than the target humidity and acquired. It is determined whether or not the outside air temperature To is less than a predetermined temperature and humidity condition (ST7).

  In step 7, when the acquired outside air humidity Ho is equal to or higher than the target humidity and the acquired outside air temperature To and the outside air humidity Ho are less than predetermined temperature and humidity conditions, in step 8, the outside air OA is set to be in the desiccant mode region. (ST8).

  Subsequently, in step 9, the air conditioning system 1 is set to the desiccant mode (ST9).

  In step 7, when the acquired outside air humidity Ho is equal to or higher than the target humidity and the acquired outside air temperature To and the outside air humidity Ho are not less than the predetermined temperature and humidity conditions, in step 10, the outside air OA is in the total heat exchange mode region. Is set (ST10).

  Subsequently, in step 11, the air conditioning system 1 is set to the total heat exchange mode (ST11).

  In this way, by controlling the air conditioning system 1, the temperature and humidity in the living room 30 can be accurately controlled.

  FIG. 16 is a diagram showing a latent heat sensible heat separation type air conditioning system of another embodiment.

  In the embodiment shown in FIG. 16, the aftercooler 14 is divided into two stages of a first aftercooler 14a and a second aftercooler 14b. The first aftercooler 14a uses high-temperature cold water, and the second aftercooler 14b uses ordinary cold water of about 7 ° C. Thus, by dividing the aftercooler 14 into two stages, it is possible to effectively use high-temperature cold water with high cooling efficiency.

  In an actual design, the temperature of the air from the first air conditioner 10 may be constant, and in this case, the aftercooler 14 may be turned on in any mode.

  As described above, the air-conditioning system 1 according to the present embodiment switches the desiccant function and the total heat exchange function by changing the number of revolutions, and the combined rotor 12 that dehumidifies the outside air OA, and the outside air OA temperature that acquires the temperature and humidity of the outside air OA. Since it includes a humidity acquisition unit To, Ho, and a control unit that controls the rotational speed of the combined rotor 12 by comparing the value acquired from the outside air OA temperature / humidity acquisition unit To, Ho with a predetermined temperature / humidity condition, In particular, the air-conditioning system 1 based on the total heat exchange rotor can be configured, and the low-cost and efficient latent heat sensible heat separation type air-conditioning system 1 can be provided.

  Further, in the air conditioning system 1 according to the present embodiment, the control unit preliminarily determines the dehumidification line determined from the regeneration temperature before the return air RA passes through the combined rotor 12 and the performance of the combined rotor 12, and a predetermined target humidity line. If the humidity at the time of dehumidification is obtained from the performance of the combined rotor 12, a desiccant gradient line passing through the intersection of the target humidity line and the dehumidifying line is set, and the humidity of the outside air OA is lower than the target humidity line, the combined rotor 12 is the total heat exchange mode region in which the total heat exchange function is used, and the temperature and humidity of the outside air OA are between the desiccant gradient line and the target humidity line, the desiccant mode region in which the combined rotor 12 is used in the desiccant function, the temperature of the outside air OA When the humidity is higher than the desiccant gradient line and the target humidity line, total heat exchange and after-cooling using the combined rotor 12 with the total heat exchange function Since setting the over de region, it becomes possible to accurately temperature controlled according to the outdoor air OA state.

  The air conditioning system 1 according to the present embodiment heats the pre-cooler 11 that cools the outside air OA before passing through the combined rotor 12, the outside air OA that has passed through the combined rotor 12, and the return air RA that is blown from the living room 30. The sensible heat rotor 13 to be exchanged, the mixing unit 50 that mixes the return air RA blown from the living room 30 to the outside air OA that has passed through the sensible heat rotor 13, and the outside air OA that has passed through the mixing part 50 are cooled, and the room 30 side And the regenerative heater 15 that heats the return air RA that has passed through the sensible heat rotor 13 and blows air to the combined rotor 12. Therefore, the system can be configured with a simple configuration. Become.

  In the air conditioning system 1 according to the present embodiment, the control unit is turned on so that the combined rotor 12 is used in the total heat exchange function in the total heat exchange mode region, and the precooler 11, the sensible heat rotor 13, and the aftercooler. 14 and the regenerative heater 15 are turned off, so that efficient operation according to the situation becomes possible.

  In the air conditioning system 1 according to the present embodiment, in the desiccant mode region, the control unit turns on the dual-purpose rotor 12 so as to use the desiccant function, turns on the sensible heat rotor 13 and the regenerative heater 15, and the precooler. 11 and the aftercooler 14 are turned off, so that efficient operation according to the situation becomes possible.

  Further, in the air conditioning system 1 according to the present embodiment, in the total heat exchange + after-cool mode region, the control unit sets the combined rotor 12 to be used with the total heat exchange function, sets the after-cooler 14 to ON, Since the cooler 11, the sensible heat rotor 13, and the regenerative heater 15 are turned off and the amount of the return air RA to the mixing unit 50 is controlled according to the latent heat load of the living room 30, efficient operation according to the situation is possible. It becomes.

  Further, in the air conditioning system 1 according to the present embodiment, when the control unit is in the total heat exchange + after-cool mode region and the temperature in the living room 30 is lower than a preset temperature, the dual-purpose rotor 12 is configured with a desiccant function. Since the precooler 11, the sensible heat rotor 13, and the regenerative heater 15 are turned on and the aftercooler 14 is turned off, efficient operation according to the situation becomes possible.

  The air conditioning method according to the present embodiment includes a procedure for acquiring the temperature and humidity of the outside air OA, and a procedure for switching the rotational speed of the combined rotor 12 by comparing the temperature and humidity of the outside air OA with a predetermined temperature and humidity condition. The air conditioning system 1 can be configured substantially based on the total heat exchange rotor, and it is possible to provide a low-cost and efficient latent heat sensible heat separation type air conditioning method.

  In addition, the air conditioning method according to the present embodiment includes a dehumidification line determined in advance from the regeneration temperature before the return air RA passes through the dual-purpose rotor 12 and the performance of the dual-purpose rotor 12, a predetermined target humidity line, and the dual-purpose rotor 12. If the slope at the time of dehumidification is obtained from the performance of the target and the slope line passing through the intersection of the target humidity line and the dehumidification line is set, and the humidity of the outside air OA is lower than the target humidity line, the combined rotor 12 is fully heated. The total heat exchange mode region used in the exchange function, and the temperature and humidity of the outside air OA are between the gradient line and the target humidity line, the desiccant mode region in which the dual-purpose rotor 12 is used in the desiccant function, and the temperature and humidity of the outside air OA are the gradient line When the humidity is higher than the target humidity line, it is determined that the combined rotor 12 belongs to the total heat exchange / after-cool mode area in which the combined rotor 12 is used with the total heat exchange function. If, because it has a, it is possible to accurately temperature controlled according to the outdoor air OA state.

  In the total heat exchange mode region, the air conditioning method according to the present embodiment has a procedure for passing the outside air OA through the combined rotor 12 used for the total heat exchange function and cooling and dehumidifying, so that it is efficient according to the situation. Driving is possible.

  Further, in the desiccant mode region, the air conditioning method according to the present embodiment uses the dual-purpose rotor 12 with the desiccant function to dehumidify the outside air OA and the heat of the external air OA dehumidified by the dual-purpose rotor 12 with the sensible heat rotor. And a depriving procedure, so that efficient operation according to the situation becomes possible.

  In the air conditioning method according to the present embodiment, in the total heat exchange + after-cool mode region, the outside air OA is passed through the dual-purpose rotor 12 used for the total heat exchange function, and is cooled and dehumidified, and the humidity of the living room 30 is predetermined. If it is higher than the set value, it has a procedure for mixing the return air RA blown from the living room 30 with the outside air OA that has passed through the combined rotor 12, and a procedure for cooling and dehumidifying the outside air OA mixed with the return air RA. This enables efficient operation according to the situation.

  In the air conditioning method according to the present embodiment, in the total heat exchange + after-cool mode region, when the temperature in the living room 30 is lower than a preset temperature, the dual-purpose rotor 12 is used with a desiccant function to dehumidify the outside air OA. And a procedure in which the heat of the outside air OA dehumidified by the combined rotor 12 is taken away by the sensible heat rotor 13, an efficient operation according to the situation becomes possible.

  In addition, this invention is not limited by this embodiment. That is, in describing the embodiment, many specific details are included for illustration, but those skilled in the art may add various variations and changes to these details.

DESCRIPTION OF SYMBOLS 1 ... Air conditioning system 10 ... 1st air conditioner 12 ... Combined rotor 13 ... Sensible heat rotor 14 ... After cooler 15 ... Regenerative heater 20 ... 2nd air conditioner 21 ... Cooling coil 22 ... Hot water coil 30 ... Living room 31 ... Channel 50 ... Mixing part VD ... Adjustment damper

Claims (13)

A combined rotor that dehumidifies the outside air by switching the desiccant function and total heat exchange function by changing the rotation speed,
An outside air temperature / humidity acquisition unit for acquiring the outside air temperature and humidity;
A control unit that controls the rotational speed of the dual-purpose rotor by comparing a value acquired from the outside air temperature and humidity acquisition unit with a predetermined temperature and humidity condition;
An air conditioning system comprising: The control unit in advance
A dehumidification line determined from the regeneration temperature before the return air passes through the combined rotor and the performance of the combined rotor;
A predetermined target humidity line;
Obtain the gradient at the time of dehumidification from the performance of the combined rotor, a desiccant gradient line passing through the intersection of the target humidity line and the dehumidification line,
Set
When the outside air humidity is lower than the target humidity line, the total heat exchange mode area in which the combined rotor is used with the total heat exchange function,
When the temperature and humidity of the outside air is between the desiccant gradient line and the target humidity line, the desiccant mode region in which the dual-purpose rotor is used with the desiccant function,
The total heat exchange + after-cool mode region in which the dual-purpose rotor is used with a total heat exchange function when the temperature and humidity of the outside air is higher than the desiccant gradient line and the target humidity line is set. The air conditioning system described in. A precooler that cools outside air before passing through the combined rotor;
A sensible heat rotor that exchanges heat between the outside air that has passed through the combined rotor and the return air blown from the living room;
A mixing unit that mixes the return air blown from the living room with the outside air that has passed through the sensible heat rotor;
An aftercooler that cools the outside air that has passed through the mixing unit and blows air to the room side;
A regenerative heater in which the return air that has passed through the sensible heat rotor is heated and blown to the combined rotor;
The air conditioning system according to claim 2, further comprising: The control unit, in the total heat exchange mode region,
Turn on the combined rotor so that it can be used for the total heat exchange function,
The air conditioning system according to claim 3, wherein the precooler, the sensible heat rotor, the aftercooler, and the regenerative heater are turned off. In the desiccant mode region, the control unit
Turn on the combined rotor to use the desiccant function,
Turn on the sensible heat rotor and the regenerative heater,
The air conditioning system according to claim 3 or 4, wherein the precooler and the aftercooler are turned off. In the total heat exchange + after-cool mode region, the control unit
Turn on the combined rotor so that it can be used for the total heat exchange function,
Turn on the aftercooler,
Turn off the precooler, the sensible heat rotor, and the regenerative heater,
The air conditioning system according to any one of claims 3 to 5, wherein an amount of return air to the mixing unit is controlled in accordance with a latent heat load of the living room. The control unit is the total heat exchange + after-cool mode region, and when the temperature in the room is lower than a preset temperature,
Turn on the combined rotor to use the desiccant function,
The precooler, the sensible heat rotor, and the regenerative heater are turned on,
The air conditioning system according to claim 6, wherein the aftercooler is turned off. The procedure to obtain the temperature and humidity of the outside air,
Comparing the temperature and humidity of the outside air with a predetermined temperature and humidity condition, and switching the number of rotations of the dual-purpose rotor;
The air-conditioning method characterized by having. A dehumidification line determined in advance from the regeneration temperature before the return air passes through the combined rotor and the performance of the combined rotor;
A predetermined target humidity line;
Obtain the gradient at the time of dehumidification from the performance of the combined rotor, a gradient line passing through the intersection of the target humidity line and the dehumidification line,
Steps to set,
When the outside air humidity is lower than the target humidity line, the total heat exchange mode area in which the combined rotor is used with the total heat exchange function,
When the temperature and humidity of the outside air is between the gradient line and the target humidity line, the desiccant mode area in which the dual-purpose rotor is used with the desiccant function,
When the temperature and humidity of the outside air is higher than the gradient line and the target humidity line, a procedure for determining that the dual-purpose rotor belongs to the total heat exchange + after-cool mode region used in the total heat exchange function,
The air conditioning method according to claim 8, further comprising: In the total heat exchange mode region,
The air conditioning method according to claim 9, further comprising a procedure of passing outside air through the combined rotor used for a total heat exchange function and cooling and dehumidifying. In the desiccant mode region,
Using the combined rotor with a desiccant function, dehumidifying the outside air,
A procedure for removing the heat of the outside air dehumidified by the combined rotor with a sensible heat rotor;
The air-conditioning method according to claim 9 or 10, characterized by comprising: In the total heat exchange + after-cool mode area,
A procedure for passing outside air through the combined rotor used in the total heat exchange function and cooling and dehumidifying;
When the humidity of the living room is higher than a predetermined setting value, the procedure of mixing the return air blown from the living room with the outside air that has passed through the combined rotor;
A procedure for cooling and dehumidifying the outside air mixed with the return air;
The air conditioning method according to claim 9, wherein the air conditioning method is provided. In the total heat exchange + after-cool mode region, when the temperature in the living room is lower than a preset temperature,
Using the combined rotor with a desiccant function, dehumidifying the outside air,
A procedure for removing the heat of the outside air dehumidified by the combined rotor with a sensible heat rotor;
The air conditioning method according to claim 12, comprising:

Images