JP2008249272A - Air conditioning system for cooling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system for cooling capable of dehumidifying and cooling a space to be cooled while simplifying a system configuration and reducing running costs without installing a special humidifier. <P>SOLUTION: A second desiccant rotor 3 and a second cooler 4 are separately provided in addition to a first desiccant rotor 1 and a first cooler 2. A moisture absorbing part 1a of the first desiccant rotor 1 is structured by dividing into two regions of a first moisture absorbing part 1a1 and a second moisture absorbing part 1a2. An air passing means 6 for air condition passes the air for air condition through a moisture absorbing part 3a of the second desiccant rotor 3, the second cooler 4, a first moisture absorbing part 1a1 of the first desiccant rotor 1, the first cooler 2, a second moisture absorbing part 1a2 of the first desiccant rotor 1, the first cooler 2, and a regeneration part 3b of the second desiccant rotor 3 sequentially. The air for air condition, which passes through the regeneration part 3b and is cooled, is supplied to an indoor space 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention comprises a rotationally driven breathable hygroscopic body, adsorbs moisture in a gas flowing through the moisture absorption section, and releases the adsorbed moisture to the gas flowing through the regeneration section, and a gas. The first cooler that is cooled by heat exchange with the cooling medium, the hygroscopic portion of the first desiccant rotor, and the first cooler are passed through the air in the order of air flow. Air-conditioning air flow means for supplying the air-conditioning air that has passed through the cooler to the space to be cooled, and regeneration gas that is heated by the heating means and then recirculated to the regeneration portion of the first desiccant rotor The present invention relates to a cooling air-conditioning system provided with a flow means.

The cooling air-conditioning system as described above dehumidifies the air-conditioning air at the moisture absorption part of the first desiccant rotor, and the air-conditioning air becomes high temperature due to generation of heat of adsorption when moisture is adsorbed. The air-conditioning air is cooled and supplied to the cooling target space at a lower temperature than when it passes through the moisture absorption part of the first desiccant rotor.
As such a conventional cooling air-conditioning system, in Patent Document 1, in addition to a heat absorption rotor as a first desiccant rotor and a sensible heat exchange rotor as a first cooler, it passes through a moisture absorption part of the first desiccant rotor and is dried. The air conditioning air cooled by passing through the first cooler after reaching a high temperature is provided with a humidifier that cools the air in a form that sprays water to remove the latent heat of vaporization. The cooling target space is cooled by supplying the air for air conditioning that has passed through the machine and has been cooled to the cooling target space.

Japanese Patent Laid-Open No. 5-115737

However, in the conventional cooling air-conditioning system, it is necessary to provide a dedicated humidifier for cooling the air-conditioning air that has passed through the first cooler, and there is also equipment for supplying water to the humidifier. Therefore, there is a risk that the system configuration increases and becomes complicated.
Moreover, in order to humidify the air for air conditioning with a humidifier, the water supplied to a humidifier is needed and there exists a possibility of causing an increase in running cost.

  The present invention has been made paying attention to such a point, and the object thereof is to provide a space to be cooled while simplifying the system configuration and reducing the running cost without providing a dedicated humidifier. It is in the point which provides the air conditioning system which can perform air conditioning.

  In order to achieve this object, the first characteristic configuration of the cooling air-conditioning system according to the present invention is composed of a breathable hygroscopic body that is driven to rotate, adsorbs moisture of the gas flowing through the hygroscopic section, and removes the adsorbed moisture. The first desiccant rotor that discharges to the gas that flows through the regeneration unit, the first cooler that cools the gas by heat exchange with the cooling medium, the hygroscopic part of the first desiccant rotor, and the first cooler in this order. Air conditioning air flow means for supplying air conditioning air that has passed through the first cooler to the space to be cooled, and air for regeneration are heated by heating means. A cooling air-conditioning system provided with a gas recirculation means for regeneration that is passed through the regeneration unit of the first desiccant rotor after heating, and is composed of a breathable moisture absorber that is driven to rotate, and is passed through the moisture absorber. Gas moisture A second desiccant rotor that discharges the adsorbed moisture to the gas that is passed through the regeneration unit, and a second cooler that cools the gas by heat exchange with the cooling medium, the first desiccant rotor and the Provided separately from the first cooler, the moisture absorption part of the first desiccant rotor is configured to be divided into two areas of a first moisture absorption part and a second moisture absorption part, and the air-conditioning air flow means is The air-conditioning air is allowed to flow through the hygroscopic portion of the second desiccant rotor and the second cooler in this order, and the air-conditioning air that has passed through the second cooler is passed through the first desiccant rotor. The first air-absorbing part and the first cooler are passed in this order, and the air-conditioning air that has passed through the first cooler is passed in the order of the second moisture-absorbing part of the first desiccant rotor and the first cooler. Let the flow The air-conditioning air that has passed through the cooler is caused to flow through the regeneration unit of the second desiccant rotor, and the air-conditioning air that has passed through the regeneration unit of the second desiccant rotor is supplied to the space to be cooled. .

  As a result, the air for air conditioning is supplied to the hygroscopic part of the second desiccant rotor, the second cooler, the first hygroscopic part of the first desiccant rotor, the first cooler, and the first desiccant rotor by the air flow means for air conditioning. The second moisture absorption unit, the first cooler, and the regeneration unit of the second desiccant rotor are passed through in this order and supplied to the space to be cooled. This air-conditioning air is dehumidified when passing through the hygroscopic portion of the second desiccant rotor, becomes low temperature and high temperature, is cooled when passing through the second cooler, remains in the low humidity and passes through the hygroscopic portion of the second desiccant rotor. It is cooler than when it passes. Next, the air for air conditioning is dehumidified when it passes through the first hygroscopic portion which is one of the regions where the hygroscopic portion of the first desiccant rotor is divided into two, and becomes a low temperature and high temperature. It is cooled when it passes through and becomes cooler than when it passes through the first moisture absorption part of the first desiccant rotor while still being kept at a lower humidity. Then, after the air for air conditioning passes through the first cooler and then passes through the second hygroscopic portion, which is the other region of the hygroscopic portion of the first desiccant rotor, the temperature becomes even lower and the temperature becomes higher. It is cooled when passing through the second desiccant rotor and the temperature is lower than when passing through the second moisture absorbing portion of the first desiccant rotor. After that, the air for air conditioning, which is in a low temperature (about room temperature) and low humidity state, is further cooled in such a way that it takes away the heat of desorption of moisture when passing through the regeneration part of the second desiccant rotor, so that the humidity rises slightly. However, the temperature is further lowered with low humidity. In this manner, the air-conditioning air that has become low-temperature and low-humidity can be supplied to the cooling target space to cool the cooling target space.

Therefore, despite the simple configuration of dividing the moisture absorption part of the first desiccant rotor into two, the air for air conditioning that has passed through the second cooler is used as the first moisture absorption part as the moisture absorption part of the first desiccant rotor. It is possible to dehumidify and lower the temperature in the first cooler, and to dehumidify and lower the temperature in the first cooler in the second moisture absorbing part as the moisture absorbing part of the first desiccant rotor. By using two first desiccant rotors and one first cooler, dehumidification and temperature reduction are performed twice, and sufficient dehumidification and temperature reduction are possible. That is, the air-conditioning air that has passed through the first cooler can be cooled without providing a dedicated device only for cooling the air-conditioning air that has passed through the first cooler. Therefore, the first desiccant rotor, the second desiccant rotor, the first cooler, and the second cooler can dehumidify and lower the temperature of the air-conditioning air three times in total. In addition, even if the moisture absorption part is divided into two in this way and each of the divided areas performs dehumidification of air-conditioning air having different humidity, the volume of the breathable hygroscopic body necessary for dehumidification is sufficiently secured. Therefore, there is almost no possibility that the dehumidifying performance will be reduced by reducing the volume.
Moreover, in order to cool the air for air conditioning which passed the 2nd moisture absorption part and the 1st cooler, a 2nd desiccant rotor will be provided, but the 2nd desiccant rotor is the air for air conditioning which passed the 1st cooler. Is used not only to cool the air but also to dehumidify the air-conditioning air before being supplied to the first desiccant rotor. Therefore, the air-conditioning air that has passed through the first cooler can be further cooled without providing a dedicated device for cooling the air-conditioning air that has passed through the first cooler.
Further, the second desiccant rotor adsorbs moisture in the air-conditioning air before dehumidifying the air-conditioning air before being supplied to the first desiccant rotor, and releases the adsorbed moisture to the air-conditioning air to desorb the moisture. Air conditioning air is cooled in a form that takes heat away. Therefore, the air for air conditioning that has passed through the first cooler can be cooled without supplying water to the second desiccant rotor.
From the above, it has become possible to provide a cooling air-conditioning system that can sufficiently cool the space to be cooled while simplifying the system configuration and reducing the running cost.

  The second characteristic configuration of the cooling air-conditioning system according to the present invention is such that the cooling air taken from the space to be cooled passes through the second cooler and the first cooler in this order as the cooling medium. A cooling medium flow means is provided, and a low temperature side low temperature side cooling part and a high temperature side high temperature side cooling part cooled by the cooling air in the first cooler are formed. It is in.

The cooling medium flow means allows the cooling air taken in from the space to be cooled to pass through the second cooler and the first cooler in this order, whereby the air for air conditioning is supplied to the first cooler and the second cooler. Can be cooled. Therefore, in order to cool air-conditioning air with the 1st cooler and the 2nd cooler, the cooling air taken in from the space to be cooled can be used, and the configuration can be simplified.
And since the low-temperature cooling air flows as a cooling medium through the first cooler, the low-temperature side cooling unit and the high-temperature side cooling unit cool the air-conditioning air flowing therethrough in the required temperature range. be able to. Therefore, it is possible to select whether the air for air conditioning that exchanges heat with the cooling medium in the first cooler is passed through the low temperature side cooling unit or the high temperature side cooling unit. The temperature can be lowered to the temperature range.

  According to a third characteristic configuration of the cooling air-conditioning system according to the present invention, the air-conditioning air flow means converts the air-conditioning air that has passed through the first moisture absorption part of the first desiccant rotor into the high-temperature of the first cooler. The air-conditioning air that has passed through the high-temperature side cooling unit and passed through the second moisture absorption unit of the first desiccant rotor is passed through the low-temperature side cooling unit of the first cooler. It is in point to let you.

  The air-conditioning air that has passed through the first moisture absorption part of the first desiccant rotor often has a higher amount of moisture absorbed than the air-conditioning air that has passed through the second moisture absorption part of the first desiccant rotor, and tends to be relatively hot. . Therefore, in the first cooler, the high-temperature side cooling unit passes the first hygroscopic unit and allows relatively high-temperature air-conditioning air to pass therethrough. On the other hand, in the first cooler, the low-temperature side cooling unit receives the second Air conditioning air having a relatively low temperature is allowed to pass through the moisture absorption part, and a thermal gradient (low temperature side cooling part and high temperature side cooling part) due to the cold of the cooling medium flowing through the first cooler is formed. In this case, heat exchange can be performed efficiently between the air-conditioning air and the cooling medium passing through the first cooler. That is, even the relatively low-temperature air-conditioning air that has passed through the second moisture-absorbing part can be effectively cooled by using a low-temperature cooling medium by flowing through the low-temperature side cooling part.

  According to a fourth characteristic configuration of the air conditioning system of the present invention, the regeneration gas flow means uses the cooling air that has passed through the first cooler by the cooling medium flow means as the regeneration gas. The point is that the regeneration gas that has passed through the regeneration unit of the first desiccant rotor and discharged through the regeneration unit of the first desiccant rotor is discharged to the outside.

The regeneration gas flow means causes the cooling air that has passed through the first cooler by the cooling medium flow means to flow directly to the regeneration portion of the first desiccant rotor as the regeneration gas. It is possible to use both the means for flowing and the means for flowing the regeneration gas, and the configuration can be simplified.
Then, the cooling air that has passed through the first cooler by the cooling medium flow means is heated by heat exchange with the air-conditioning air in the first cooler and the second cooler. Therefore, before the air is passed through the regeneration portion of the first desiccant rotor, the already heated air-conditioning air is heated by the heating means as a regeneration gas. As a result, a large heating capacity of the heating means is not required, and the configuration can be simplified and the running cost can be reduced from this point.

  According to a fifth characteristic configuration of the air conditioning system of the present invention, the first desiccant rotor passes through the breathable hygroscopic body in the order of the first hygroscopic part, the regeneration unit, and the second hygroscopic part of the first desiccant rotor. It is in the point of rotational driving so that

As a result, in the breathable hygroscopic body of the first desiccant rotor, the region of the breathable hygroscopic body that is in the first hygroscopic section that requires the most amount of moisture to be moved moves to the reproducing section by rotational driving. As a result, it is possible to perform the reproduction efficiently. In addition, the area of the breathable hygroscopic material regenerated by the regenerating unit moves to the second hygroscopic unit by the rotation drive, and the regenerating unit is in the most dry state, so the air for air conditioning is relatively low in humidity. However, it becomes possible to absorb moisture. Further, the area of the breathable hygroscopic body that has absorbed moisture to some extent in the second hygroscopic section moves to the first hygroscopic section by rotational driving, and even the relatively humid air conditioning air further absorbs moisture. Thus, the air for air conditioning can be dried.
Therefore, it is possible to continuously perform a cycle of regeneration, moisture absorption to a certain degree, further moisture absorption, and regeneration in the breathable moisture absorbent body of the first desiccant rotor, and efficient dehumidification and cooling can be performed. Become.

  In a sixth characteristic configuration of the air conditioning system according to the present invention, either or both of the breathable hygroscopic bodies in the first desiccant rotor and the second desiccant rotor are mainly composed of a hygroscopic polymer. In the point.

  Since one or both of the breathable hygroscopic bodies in the first desiccant rotor and the second desiccant rotor are mainly composed of a hygroscopic polymer, they are generated when the moisture of the gas flowing through the hygroscopic portion is adsorbed. Heat of adsorption can be minimized. Therefore, since the temperature rise of the air-conditioning air passing through the hygroscopic portion of the first desiccant rotor and the hygroscopic portion of the second desiccant rotor can be suppressed as much as possible, the cooling capacity of the first cooler and the second cooler is reduced. It is possible to simplify the system configuration.

  A seventh characteristic configuration of the air conditioning system according to the present invention is such that either one or both of the breathable hygroscopic bodies in the first desiccant rotor and the second desiccant rotor have a thermosensitive polymer as a main component. There is a point. Here, the thermosensitive polymer is a polymer having different moisture absorption characteristics at the transition point (temperature), and functions as a hygroscopic polymer on the low temperature side.

  Since one or both of the breathable hygroscopic bodies in the first desiccant rotor and the second desiccant rotor are mainly composed of a temperature-sensitive polymer, they are generated when the moisture of the gas flowing through the hygroscopic portion is adsorbed. The heat of adsorption can be reduced as much as possible. In addition, since the temperature-sensitive polymer is hydrophilic at low temperatures and hydrophobic at high temperatures from the transition point, even if the relative humidity of the gas passing through the hygroscopic section changes, moisture adsorption at high temperatures, In this case, the moisture can be sufficiently desorbed and air-conditioning air having a low humidity can be supplied in a stable state. Therefore, the cooling capacity of the first cooler and the second cooler can be reduced, and the amount of moisture that can be adsorbed / desorbed with respect to the use amount of the breathable moisture absorber can be increased, thereby simplifying the system configuration. Can be planned.

An embodiment of a cooling air-conditioning system 100 according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the air conditioning system 100 includes a first desiccant rotor 1, a first cooler 2, a second desiccant rotor 3, and a second cooler 4.
Then, the outdoor outside air is passed as air conditioning air to each device and then supplied to the indoor space 5 as the space to be cooled, and the regeneration gas is passed through the first desiccant rotor 1. The regenerating gas flow means 8 is also provided, and the cooling medium flow means 9 for flowing the cooling medium through the first cooler 2 and the second cooler 4 is also provided.

As shown in FIG. 1, the first desiccant rotor 1 is composed of a breathable hygroscopic body that is rotationally driven by a first driving motor 10, adsorbs the moisture of the gas flowing through the hygroscopic portion 1a, and the adsorbed moisture Is discharged into the gas flowing through the regenerating unit 1b. Specifically, the moisture absorption part 1a is divided into two parts, which are configured as a first moisture absorption part 1a1 and a second moisture absorption part 1a2, and the first desiccant rotor 1 is radially divided into three from the rotation center in the cross section in the rotational drive direction. The respective areas are defined as a first hygroscopic portion 1a1, a second hygroscopic portion 1a2, and a regenerating portion 1b. In FIG. 1, the first desiccant rotor 1 is equally divided into three and shown as regions having the same area, but how the area ratio of each region is made depends on conditions such as the performance of the breathable hygroscopic body. Can be changed as appropriate.
Further, the first desiccant rotor 1 is rotatably provided with a breathable hygroscopic body held on a breathable honeycomb substrate, and is rotated by a first driving motor 10. When the first desiccant rotor 1 is rotationally driven by the first driving motor 10, the portions corresponding to the first moisture absorbing portion 1a1, the second moisture absorbing portion 1a2, and the reproducing portion 1b continuously change in the rotation direction. It is configured as follows. In FIG. 1, these regions are arranged so that the breathable moisture absorber passes through the first moisture absorber 1 a 1, the regenerator 1 b, and the second moisture absorber 1 a 2 in this order by rotational driving. The first desiccant rotor 1 is driven to rotate at a constant speed, for example, several tens of revolutions per hour.

  The second desiccant rotor 3 is composed of a breathable hygroscopic body that is rotationally driven by the second drive motor 11, adsorbs moisture in the gas flowing through the hygroscopic section 3a, and passes the adsorbed moisture to the regenerating section 3b. It is comprised so that it may discharge | release to the gas. In FIG. 1, a part of the second desiccant rotor 3 located on the upper side is shown as a hygroscopic part 3a, and a part of the second desiccant rotor 3 located on the lower side is shown as a regenerating part 3b. Therefore, the second desiccant rotor 3 has regions that are radially divided into two from the rotation center in the cross section in the rotational driving direction, and the respective regions are a moisture absorption part 3a and a regeneration part 3b, and the first desiccant rotor 3 Like the moisture absorption part 1a of the rotor 1, the structure which the moisture absorption part divided | segmented into two area | regions is not employ | adopted. Thus, although the 2nd desiccant rotor 3 has a different point from the structure of the moisture absorption part 1a of the 1st desiccant rotor 1, since it is the same structure except it, detailed description is abbreviate | omitted.

  The breathable hygroscopic body in the first desiccant rotor 1 and the second desiccant rotor 3 is composed mainly of a hygroscopic polymer. For example, sodium polyacrylate is used as the hygroscopic polymer. The first desiccant rotor 1 and the second desiccant rotor 3 are configured by holding sodium polyacrylate powder on a honeycomb-shaped substrate having a diameter of 200 mm and a thickness of 60 mm.

The said 1st cooler 2 is comprised so that the gas flowed may be cooled by heat exchange with a cooling medium. And the 1st cooler 2 is a heat exchanger which laminated | stacked the plate body for heat conduction formed with the metal (aluminum, copper, iron, the alloy containing these, etc.) with high heat conductivity, or resin-type material. It is configured. For example, a cube-shaped sensible heat exchanger having a side of 200 mm in which resin corrugated plates having a thickness of 0.1 mm are stacked is used.
And inside the 1st cooler 2, the cooling air as a cooling medium which flows through the inside of the 1st cooler 2 is flowed, and the high temperature side cooling part 2a1 which becomes a high temperature side and the low temperature side which becomes a low temperature side Two regions of the cooling part 2a2 are formed. For example, a thermal gradient is formed in the first cooler 2 from the region 2b through which the low-temperature cooling air flows to the low-temperature side cooling unit 2a2 that is the low-temperature side and the high-temperature side cooling unit 2a1 that is the high-temperature side. The Therefore, for example, as shown in FIG. 1, when the gas to be heat exchanged with the cooling air is passed through the first cooler 2, the first moisture absorption part 1 a 1 of the first desiccant rotor 1 is connected to the high temperature side cooling part 2 a 1. The air-conditioning air having a relatively high temperature that has passed through is caused to flow, and the air-conditioning air having a relatively low temperature that has passed through the second moisture absorption portion 1a2 of the first desiccant rotor 1 is caused to flow through the low-temperature side cooling portion 2a2. To do. As a result, heat can be exchanged with the cooling air, and even relatively low-temperature air-conditioning air can be sufficiently cooled, and relatively high-temperature air-conditioning air can also be sufficiently cooled. The cold energy of air can be used effectively.

  The second cooler 4 is configured to cool the flowed gas by heat exchange with the cooling medium. And the 1st cooler 2 is a heat exchanger which laminated | stacked the plate body for heat conduction formed with the metal (aluminum, copper, iron, the alloy containing these, etc.) with high heat conductivity, or resin-type material. It is configured. For example, a cube-shaped sensible heat exchanger having a side of 200 mm in which resin corrugated plates having a thickness of 0.1 mm are stacked is used.

The air-conditioning air flow means 6 uses outdoor outdoor air as air-conditioning air, the moisture absorption part 3a of the second desiccant rotor 3, the second cooler 4, the first moisture absorption part 1a1 of the first desiccant rotor 1, and the first cooling. In the order of passing through the high temperature side cooling unit 2a1 of the cooler 2, the second moisture absorption unit 1a2 of the first desiccant rotor 1, the low temperature side cooling unit 2a2 of the first cooler 2, and the regeneration unit 3b of the second desiccant rotor 3, respectively. The air-conditioning air is allowed to flow, and the air-conditioning air that has passed through the regeneration unit 3 b of the second desiccant rotor 3 is supplied to the indoor space 5.
This air-conditioning air flow means 6 includes a hygroscopic portion 3a of the second desiccant rotor 3, a second cooler 4, a first hygroscopic portion 1a1 of the first desiccant rotor 1, a high temperature side cooling portion 2a1 of the first cooler 2, The second moisture absorption part 1a2 of the first desiccant rotor 1, the low temperature side cooling part 2a2 of the first cooler 2, the regeneration part 3b of the second desiccant rotor 3, the air flow path 12 for air conditioning communicating with the indoor space 5, and the outside air An air-conditioning air supply fan 13 that is passed through the air-conditioning air flow path 12 as air-conditioning air is configured. The air-conditioning air flow means 6 continuously operates the air-conditioning air supply fan 13 when air-conditioning the indoor space 5, for example, supplying air-conditioning air at a flow rate of 100 m ³ / h. 5 is continuously supplied.

The cooling medium flow means 9 is configured to flow the cooling air taken from the indoor space 5 as the cooling medium in a state in which the second cooler 4 and the first cooler 2 are passed in this order. ing. At this time, the cooling air in the first cooler 2 forms a thermal gradient as described above. For example, as shown in FIG. 1, the cooling air is sequentially from a position close to the region 2b through which the low-temperature cooling air flows. The low temperature side cooling part 2a2 which becomes the low temperature side and the high temperature side cooling part 2a1 which becomes the high temperature side can be formed. Therefore, for example, as shown in FIG. 1, the cooling air relatively flows through the high temperature side cooling unit 2 a 1 in addition to heat exchange with the relatively low temperature air conditioning air that flows through the low temperature side cooling unit 2 a 2. It will flow through the 1st cooling so that heat exchange with hot air for air conditioning can also be performed. As a result, the air-conditioning air can be cooled to a required temperature range.
The cooling medium flow means 9 includes a cooling medium flow path 14 communicating with the indoor space 5, the second cooler 4, and the first cooler 2, and cooling air taken from the indoor space 5. The cooling medium supply fan 15 is electrically driven to flow through the passage 14. Then, the cooling medium flow means 9 continuously operates the cooling medium supply fan 15 to cool the indoor space 5, thereby supplying the cooling air to the second cooler 4 and the first cooler 2. It is comprised so that it may supply continuously.

The regeneration gas flow means 8 uses the cooling medium flow means 9 to heat the cooling air that has passed through the first cooler 2 by using the heating means 7 as a regeneration gas, and then regenerates the first desiccant rotor 1. The regeneration gas that has passed through the regeneration section 1b of the first desiccant rotor 1 through the fluid 1b is discharged to the outside.
The regeneration gas flow means 8 includes a regeneration gas flow path 16 that communicates the first cooler 2, the heating means 7, and the regeneration portion 1 b of the first desiccant rotor 1. That is, the regeneration gas flow means 8 causes the cooling air and the regeneration gas to flow by using the cooling air that has passed through the first cooler 2 by the cooling medium flow means 9 as the regeneration gas. Therefore, the cooling medium supply fan 15 is also used. Therefore, the regeneration gas flow means 8 can be simply constituted by the regeneration gas flow path 16, and the configuration can be simplified.

  The heating means 7 is composed of a hot water heat exchanger that heats the regeneration gas with the supplied hot water. For example, the regeneration gas is continuously heated by supplying hot water at 60 ° C. to the hot water heat exchanger at a flow rate of 2 liters / minute.

The air for air conditioning is, as indicated by solid line arrows in FIG. 1, the hygroscopic portion 3 a of the second desiccant rotor 3, the second cooler 4, the first hygroscopic portion 1 a 1 of the first desiccant rotor 1, and the first cooler 2. Of the first desiccant rotor 1, the second moisture absorption part 1 a 2 of the first desiccant rotor 1, the low temperature side cooling part 2 a 2 of the first cooler 2, and the regeneration part 3 b of the second desiccant rotor 3, and then the indoor space 5. To be supplied.
The air for air conditioning is dehumidified when passing through the hygroscopic portion 3a of the second desiccant rotor 3, becomes low temperature and high temperature, and is cooled when passing through the second cooler 4 and remains at low humidity while remaining in the second desiccant rotor. The temperature becomes lower than that when passing through the moisture absorbing portion 3a. Next, the air for air conditioning is dehumidified when it passes through the first hygroscopic portion 1a1, which is one of the regions where the hygroscopic portion 1a of the first desiccant rotor 1 is divided into two parts, and becomes lower in humidity and high temperature. It is cooled when it passes through the high temperature side moisture absorption part 2a1 of the 1 cooler 2, and becomes lower temperature than when it passes through the 1st moisture absorption part 1a1 of the 1st desiccant rotor 1 with still lower humidity. And after the air for air conditioning passes the 2nd moisture absorption part 1a2 which is the other area | region of the moisture absorption part 1a of the 1st desiccant rotor 1 after passing the high temperature side moisture absorption part 2a1 of the 1st cooler 2, more The temperature is lower when the humidity is lower and the temperature is lower than when the temperature is low when passing through the second moisture absorption portion 1a2 of the first desiccant rotor 1 while being cooled and passing through the low temperature moisture absorption portion 2a2 of the first cooler 2. Thereafter, the air-conditioning air in a low temperature (about room temperature) and low humidity state is further cooled in such a manner that it takes away heat of desorption of moisture when passing through the regenerating portion 3b of the second desiccant rotor 3, so that it becomes a little humid. Rises but remains cool and cool. In this way, the air-conditioning air that has become low-temperature and low-humidity can be supplied to the indoor space 5 as the space to be cooled to cool the indoor space 5.

  The cooling air taken in from the indoor space 5 passes as the cooling medium in the order of the second cooler 4 and the first cooler 2 as shown by the dotted arrows in FIG. The air passes through the regeneration unit 1b of the desiccant rotor 1 as regeneration air and is discharged to the outside. The cooling air cools the air-conditioning air by heat exchange with the air-conditioning air when passing through the second cooler 4, and heat-exchanges with the air-conditioning air when passing through the first cooler 2. Cool air for air conditioning. At this time, when passing through the first cooler 2, the air for air conditioning can be cooled by both the high temperature side cooling unit 2 a 1 and the low temperature side cooling unit 2 a 2. It will be cooled twice. Thereafter, the cooling air is heated as regeneration air when passing through the heating means 7, and is humidified and cooled when passing through the regeneration unit 1 b of the first desiccant rotor 1.

Next, an embodiment when the cooling air-conditioning system 100 of FIG. 1 is actually operated will be described.
In the cooling air-conditioning system 100 of FIG. 1, each of the first desiccant rotor 1 and the second desiccant rotor 3 is a honeycomb rotor having a honeycomb substrate having a diameter of 200 mm and a thickness of 60 mm, and the surface of the substrate is air permeable. A polyacrylic acid sodium powder as a hygroscopic material was installed and constituted. Moreover, the 1st cooler 2 and the 2nd cooler 4 were comprised using the sensible heat exchange element of the cube shape whose one side which consists of a resin corrugated board of thickness 0.1mm was 200mm. Air conditioning air supply fan 13 and cooling medium supply fan 15 continuously supplied air as air for air conditioning and cooling air taken from indoor space 5 at a flow rate of 100 m ³ / h, respectively. The hot water heat exchanger as the heating means 7 was supplied with 60 ° C. hot water at a flow rate of 2 liters / minute.
Table 1 shows an actual measurement result of the temperature of the air-conditioning air supplied to the indoor space 5 by the cooling / air-conditioning system 100 when the temperature of the outside air as the air-conditioning air and the temperature of the cooling air are changed under the above conditions. . At this time, the relative humidity of the outside air and the cooling air is adjusted to 60%.

As shown in Table 1, the temperature of the air-conditioning air supplied to the indoor space 5 is about 10 ° C. lower than the temperature of the outside air and the cooling air regardless of the temperature of the outside air and the cooling air. It was.
This is because the air for air conditioning is several degrees in the second cooler 4, the high temperature side cooling unit 2 a 1 of the first cooler 2, the low temperature side cooling unit 2 a 2 of the first cooler 2, and the regeneration unit 3 b of the second desiccant rotor 3. It is considered that the air-conditioning air can be supplied to the indoor space 5 that is the space to be cooled in a state where the temperature is efficiently and reliably lowered.
Therefore, when supplying the outside air to the indoor space 5 by the cooling air-conditioning system 100, it can be confirmed that the sufficiently cooled air-conditioning air can be supplied. In addition, it was possible to realize a cooling air conditioning system that performs sufficient cooling and does not require water supply equipment.

[Another embodiment]
(1) In the above embodiment, the case where the breathable hygroscopic material in the first desiccant rotor 1 and the second desiccant rotor 3 uses sodium polyacrylate, which is a hygroscopic polymer, as a main component is described. However, the present invention is not limited to this, and any breathable hygroscopic material having high hygroscopic properties can be used without particular limitation. For example, polyacrylamide as a temperature-sensitive polymer can also be used. By using such a temperature-sensitive polymer, the desiccant rotor absorbs moisture even when the air-conditioning air temperature is low and the relative humidity is low (for example, about 30 ° C. and about 70%) across the transition temperature. When the temperature of the air-conditioning air is high (for example, about 50 ° C.), the amount of regeneration in the regeneration portion of the desiccant rotor is sufficient regardless of the relative humidity. Can be secured.
The above-described hygroscopic polymer and temperature-sensitive polymer are used for the breathable hygroscopic bodies of the first desiccant rotor 1 and the second desiccant rotor 3, but not limited thereto, for example, an isobutylene / maleate system , Starch / polyacrylate system, PVA (polyvinyl alcohol) / polyacrylate system, starch / acrylamide / polyacrylate system, cross-linked PVA system, cross-linked CMC (Sodium Carboxymethylcellulose) system, etc. Can be used.

(2) In the above embodiment, the air inside the first cooler is divided into two regions, the low temperature side cooling unit and the high temperature side cooling unit, and the air conditioning air is allowed to flow, but the air conditioning air can be appropriately cooled. If it is a structure, it does not divide | segment into two areas in this way, but can also let it flow in the 1st cooler.
Moreover, in the said embodiment, the air for air conditioning which passed the 1st moisture absorption part of the 1st desiccant rotor to the high temperature side cooling part, and the air conditioning air which passed the 2nd moisture absorption part of the 1st desiccant rotor to the low temperature side cooling part are used. The air conditioning air that has passed through the first hygroscopic part can be passed through the low temperature side cooling part, and the air conditioning air that has passed through the second hygroscopic part can be passed through the high temperature side cooling part.

(3) In the above embodiment, the cooling medium flow means 9 uses the cooling air taken from the indoor space 5 in the state where the second cooling device 4 and the first cooling device 2 are passed in this order as the cooling medium. Although it is made to flow, how the cooling medium is passed through the first cooler 2 and the second cooler 4 can be appropriately changed.
For example, the first cooler flow means for flowing the cooling air taken in from the indoor space 5 to the first cooler 2 as a cooling medium, and the second cooling air taken as the cooling medium from the indoor space 5 The second cooler flow means for flowing through the cooler 4 may be provided separately.

(4) In the above embodiment, the regeneration gas flow means 8 uses the cooling air that has passed through the first cooler 2 by the cooling medium flow means 9 as the regeneration gas. The gas flow means 8 can also use a gas other than the cooling air that has passed through the first cooler 2 as a regeneration gas, and what kind of gas is used as the regeneration gas can be appropriately changed. is there.

(5) In the above-described embodiment, the first desiccant rotor 1 and the second desiccant rotor 3 are exemplified by a honeycomb substrate in which a moisture absorbent is held, but the first desiccant rotor 1 and the second desiccant rotor 3 are exemplified. The configuration of can be changed as appropriate. For example, a container provided in a flow path of a gas to be flowed may be filled with a hygroscopic body, or a flow path of a gas to be flowed and a wall surface portion of the flow path may be formed using the hygroscopic body as a main component.

(6) In the above embodiment, the cooling medium flow means 9 uses the cooling air taken in from the indoor space 5 as the cooling medium. For example, outdoor air outside the room is added to the cooling air taken in from the indoor space 5. The mixed air-fuel mixture for cooling can also be used as a cooling medium, and whether such a medium is used as a cooling medium can be appropriately changed.

(7) In the above embodiment, the air conditioning air supply fan 13 is provided at the upstream end of the air conditioning air flow path 12. The air supply fan 11 can be provided, and the installation position of the air conditioning air supply fan 13 can be changed as appropriate.

(8) In the above embodiment, the cooling medium supply fan 15 is provided at the upstream end of the cooling medium flow path 14, but for example, the middle part or the downstream end of the cooling medium flow path 14, or The cooling medium supply fan 15 can be provided in the regeneration gas flow path 16, and the installation position of the cooling medium supply fan 15 can be changed as appropriate.

  Provided is a cooling air-conditioning system capable of cooling a space to be cooled while providing a dedicated humidifier and simplifying the system configuration and reducing the running cost.

Schematic of cooling air conditioning system according to the present application

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st desiccant rotor 1a1 1st moisture absorption part 1a2 2nd moisture absorption part 1b Regenerating part 2 1st cooler 2a1 High temperature side cooling part 2a2 Low temperature side cooling part 3 2nd desiccant rotor 3a Hygroscopic part 3b Regenerating part 4 2nd cooler 5 Cooling target space (indoor space)
6 Air-flowing means for air conditioning 7 Heating means 8 Gas-flowing means for regeneration 9 Cooling medium-flowing means

Claims (7)

A first desiccant rotor comprising a breathable hygroscopic body that is driven to rotate, adsorbs moisture in the gas flowing through the hygroscopic section, and releases the adsorbed moisture to the gas flowing through the regeneration section;
A first cooler that cools the gas by heat exchange with the cooling medium;
Air-conditioning air is allowed to flow through the moisture absorption part of the first desiccant rotor and the first cooler in this order, and the air-conditioning air that has passed through the first cooler is supplied to the space to be cooled. Air flow means for air conditioning;
A cooling air-conditioning system provided with a regeneration gas flow means for heating the regeneration gas with a heating means and then flowing it to the regeneration portion of the first desiccant rotor,
A second desiccant rotor comprising a breathable hygroscopic body that rotates, adsorbs moisture in the gas flowing through the moisture absorption section, and releases the adsorbed moisture to the gas flowing through the regeneration section;
A second cooler for cooling the gas by heat exchange with the cooling medium is provided separately from the first desiccant rotor and the first cooler;
The moisture absorption part of the first desiccant rotor is divided into two areas, a first moisture absorption part and a second moisture absorption part,
The air-conditioning air flow means causes the air-conditioning air to flow through the second desiccant rotor and the second cooler in this order, and then passes through the second cooler. Air conditioning air is passed through the first desiccant rotor in the first desiccant rotor and the first cooler in this order, and the air conditioning air that has passed through the first cooler is passed through the second desiccant rotor in the second desiccant rotor. The air-conditioning air passed through the first cooler in this order was passed through the regeneration portion of the second desiccant rotor and passed through the regeneration portion of the second desiccant rotor. A cooling air conditioning system for supplying the air for air conditioning to the space to be cooled.   Cooling medium flow means is provided for allowing cooling air taken from the space to be cooled to flow as the cooling medium so as to pass through the second cooler and the first cooler in this order. The cooling air-conditioning system according to claim 1, wherein a low-temperature side cooling unit and a high-temperature side cooling unit that are cooled by the cooling air are formed in a cooler.   The air-conditioning air flow means causes the air-conditioning air that has passed through the first moisture absorption part of the first desiccant rotor to flow through the high-temperature side cooling part of the first cooler, and the high-temperature side cooling part is The cooling air-conditioning system according to claim 2, wherein the air-conditioning air that has passed and passed through the second moisture absorption part of the first desiccant rotor is allowed to flow through the low-temperature side cooling part of the first cooler.   The regeneration gas flow means causes the cooling air that has passed through the first cooler by the cooling medium flow means to flow as a regeneration gas to the regeneration portion of the first desiccant rotor, and The cooling air-conditioning system according to claim 2 or 3, wherein the regeneration gas that has passed through the regeneration unit of the first desiccant rotor is discharged to the outside.   5. The drive mechanism according to claim 1, wherein the first desiccant rotor is rotationally driven so as to pass the breathable hygroscopic body in the order of the first hygroscopic part, the regeneration part, and the second hygroscopic part of the first desiccant rotor. The air-conditioning system according to claim 1.   The one or both of the breathable hygroscopic bodies in the first desiccant rotor and the second desiccant rotor are mainly composed of a hygroscopic polymer. 6. Air conditioning system.   6. The air-permeable hygroscopic material in the first desiccant rotor or the second desiccant rotor is one or both of which have a thermosensitive polymer as a main component. 6. Air conditioning system.

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