JP2016173194A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform compression and conveyance of air without using power.SOLUTION: In air conditioning system 1, a difference of elevation is provided between a storage tank 4, a low temperature air compression vessel 7 and a high temperature air compression vessel 8, and the filled outside air is compressed by a water pressure by the difference of elevation. The low temperature air compression vessel 7 is provided inside a water tank 12 and produces low temperature compressed air. The high temperature air compression vessel 8 produces high temperature compressed air. A desiccant air conditioner 3 is provided on the roof floor of a building 2, and the low temperature compressed air and the high temperature compressed air are conveyed respectively to the desiccant air conditioner 3 via a low temperature compressed air pipeline 13 and a high temperature compressed air pipeline 14, by a pressure difference between the compressed air in the low temperature air compression vessel 7 and the high temperature air compression vessel 8 and a room 2a of the building 2. In the desiccant air conditioner 3, the low temperature compressed air is expanded in a processing flow passage, dehumidified by a desiccant rotor 19, cooled by a cooling coil, and cold air is exhausted into the room 2a. The high temperature compressed air is supplied to a regeneration flow passage and regenerates the desiccant rotor 19.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning system having energy saving performance that reduces motive energy and performs indoor air conditioning and ventilation.

2. Description of the Related Art Conventionally, buildings such as buildings and houses have been improved in airtightness and heat insulation in order to realize high energy saving performance. On the other hand, the necessity of controlling the indoor environment by adjusting the heat generated from various human bodies and various indoor devices is increasing along with the increase in airtightness and heat insulation in the building.
As an air conditioning system with improved energy saving performance, for example, a latent heat sensible heat separation air conditioning system combining a radiant panel and a desiccant air conditioner has been proposed. In this air conditioning system, high heat-saving performance can be exhibited compared with the conventional air conditioning system by processing latent heat with a desiccant air conditioner and processing sensible heat with a radiant panel.

  However, even in such an air conditioning system, as shown in FIG. 4, the desiccant air conditioner has power to drive various drive means such as an air supply fan, an exhaust fan, each drive motor of a desiccant rotor, and a pump for cold / hot water. In addition, the radiant panel also requires power for driving the cold / hot water pump. Therefore, further power reduction is necessary to improve energy saving performance.

  In the above-described air conditioning system, for example, a device described in Patent Document 1 is known as means for reducing conveyance power such as air. In the air conditioning system described in Patent Document 1, the outside air is compressed by an air compressor, converted into high-pressure cooling air by a cooling device and conveyed to the indoor unit, and the high-pressure cooling air is ejected from the induction outlet of the indoor unit to decompress and expand. At the same time, it has a configuration in which low-pressure cooling air and indoor air are attracted and mixed to blow out the conditioned air into the room as cold air.

JP 2001-116298 A

However, in the desiccant air conditioner shown in FIG. 4, a pump for supplying cold water and hot water to the cooling coil, heating coil and regeneration coil, a drive motor for the desiccant rotor, air supply fan and exhaust fan, and further, hot water and cold water are supplied to the desiccant air conditioner. Many power sources, such as a pump to supply to, were needed. For this reason, there is a drawback that the energy consumption of the air conditioner is large.
In addition, the air conditioning system described in Patent Document 1 includes a mechanism for supplying high-pressure cooling air manufactured by an air compressor to an indoor unit and guiding low-pressure cooling air to the indoor unit using a part of the high-pressure cooling air as an induced pressure. Therefore, although a certain energy-saving effect can be exhibited, since an air compressor, a dryer, and the like are provided, a sufficient reduction in power cannot be achieved.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an air conditioning system capable of compressing and conveying air without using power.

An air conditioning system according to the present invention includes a water storage unit, an air compression container that compresses air by a water pressure due to a height difference between the water storage unit, and a compressed air pipe that conveys compressed air produced in the air compression container. An air conditioner that dehumidifies and / or adjusts the temperature of the compressed air conveyed by the compressed air pipe and supplies the compressed air to the interior of the building, and compresses the compressed air by the pressure difference between the compressed air in the air compression container and the interior of the building. It is transported to an air conditioner.
According to the air conditioning system of the present invention, the air in the air compression container is compressed by the water pressure due to the height difference from the water storage means, and this compressed air is conveyed to the air conditioner by the compressed air piping, and the compressed air is compressed by the air conditioner. The air adjusted at least one of humidity and temperature can be supplied to the building interior, and the compression of the air is performed by the water pressure due to the height difference between the water storage means and the air compression container, so no power is required, Further, since the compressed air in the manufactured air compression container can be supplied to the room through the air conditioner by the pressure difference from the room interior, less power is required and energy saving performance can be improved.
In addition, the air conditioning system by this invention may be provided in the air conditioner, and may be provided with the heat exchanger which adjusts the temperature of compressed air, and can adjust the temperature of compressed air with a heat exchanger and can supply air indoors.

In the air conditioning system according to the present invention, the air compression container includes a low-temperature air compression container and a high-temperature air compression container, and the air conditioner expands the low-temperature compressed air conveyed from the low-temperature air compression container and dehumidifies it with a desiccant rotor. It may be a desiccant air conditioner provided with a processing flow path supplied into the room and a regeneration flow path for regenerating the desiccant rotor with the high temperature compressed air conveyed from the high temperature air compression container.
According to the desiccant air conditioner, the low-temperature compressed air produced in the low-temperature air compression container can be transported to the treatment channel and absorbed by the desiccant rotor, and the high-temperature compressed air produced in the high-temperature air compression vessel can be conveyed to the regeneration channel. The desiccant rotor can be regenerated.

In addition, low-temperature compressed air piping that supplies the low-temperature compressed air in the low-temperature air compression container to the processing flow path of the desiccant air conditioner, and high-temperature compression that supplies the high-temperature compressed air in the high-temperature air compression container to the regeneration flow path of the desiccant air conditioner An air pipe may be provided.
The low-temperature compressed air in the low-temperature compressed air container is transported to the processing flow path by the low-temperature compressed air piping due to the pressure difference between the low-temperature compressed air and the building interior, and the high-temperature compressed air in the high-temperature compressed air container is transferred to the high-temperature compressed air and the building. The high-temperature compressed air pipe can convey the low-temperature and high-temperature compressed air individually according to the pressure difference.

  Further, in the air conditioning system according to the present invention, the air conditioner expands the high temperature compressed air conveyed from the air compression container to a low temperature, dehumidifies it with a desiccant rotor, and supplies it to the room, and conveys it from the air compression container. It may be a desiccant air conditioner provided with a regeneration flow path for regenerating the desiccant rotor with the high-temperature compressed air.

  According to the air conditioning system of the present invention, the air can be compressed by the water pressure due to the height difference between the water storage means and the air compression container, and the pressure difference between the compressed air produced in the air compression container and the room interior of the building. Therefore, the compressed air can be conveyed to the air conditioner, so that the power source for operating the air conditioning system can be reduced and the energy saving performance can be improved.

It is explanatory drawing which shows the air conditioning system by embodiment of this invention. It is a figure which shows the structure of the desiccant air conditioner provided in the air conditioning system shown in FIG. It is a figure which shows the structure of the air conditioner by a modification. It is explanatory drawing which shows the structure of a general desiccant air conditioner.

Hereinafter, an air conditioning system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 shows an air conditioning system 1 according to an embodiment of the present invention. The air conditioning system 1 is, for example, a desiccant air conditioner 3 that is an air conditioner installed on a rooftop of a building 2, for example, and a water tank installed on the ground or the like. 4 and an air compression mechanism 5 installed below the water storage tank 4, for example, underground.
In the air conditioning system 1 according to the present embodiment, the water tank 4 installed on the ground stores, for example, rainwater or middle water. Instead of rainwater or middle water, water such as waterworks, rivers, lakes, and seawater is used. It may be used.

In the air compression mechanism 5, one or a plurality of, for example, two low-temperature air compression containers 7 for producing low-temperature compressed air are installed, and one or a plurality of high-temperature air compression containers 8 for producing high-temperature compressed air, For example, two are installed. A water distribution pipe 9 a is installed in the lower part of the water storage tank 4, and the water distribution pipe 9 a is branched downstream thereof and connected to the upper ends of the compression containers 7 and 8. A water distribution pipe 9 b is also connected to the lower ends of the compression containers 7 and 8, respectively, and water is stored in the lower side of the compression containers 7 and 8.
The air compression mechanism 5 is provided with an air distribution pipe 10 for taking in outside air, and the downstream side is branched and connected to the compression containers 7 and 8, respectively. The compressed containers 7 and 8 are filled with outside air from the air distribution pipe 10 to be in a valve-closed state, and the compressed containers 7 and 8 are filled using the water pressure due to the difference in height between the water storage tank 4 and the compressed containers 7 and 8. Compressed air can be compressed.

  Moreover, the two low-temperature air compression containers 7 are accommodated in the cooling water tank 12, and the cooling of the air in the low-temperature air compression containers 7 can be performed simultaneously with the compression by cooling the outside of each container 7 with water. . In the present embodiment, for example, air at about 20 ° C. can be produced as a low temperature. Moreover, the high temperature air compression container 8 can manufacture high temperature air by compressing internal air with the water of the water storage tank 4, and can manufacture air, for example, about 50 degreeC as high temperature. Note that the air pressure produced by compression in the low-temperature air compression container 7 and the high-temperature air compression container 8 is set to be slightly higher than the atmospheric pressure.

  And one end of the low temperature compressed air piping 13 is connected to the side part of each low temperature air compression container 7, and each other low temperature compressed air piping 13 joins and the other end connects to the desiccant air conditioner 3 installed on the roof of the building 2 Has been. Similarly, one end of a high-temperature compressed air pipe 14 is connected to the side portion of each high-temperature air compressed container 8, and the other end of each high-temperature compressed air pipe 14 is joined to the desiccant air conditioner 3 installed on the roof of the building 2. It is connected. Valve bodies 11 a and 11 b that can be opened and closed are respectively installed in the air distribution pipes 10, the low-temperature compressed air pipes 13, and the high-temperature compressed air pipes 14 on the upstream and downstream sides of the compression containers 7 and 8.

The low-temperature compressed air and the high-temperature compressed air compressed in the compression containers 7 and 8 rise over the height difference between the compression containers 7 and 8 and the desiccant air conditioner 3 and flow into the desiccant air conditioner 3. Compressed to high pressure. That is, the low-temperature compressed air and the high-temperature compressed air have a differential pressure such that the low-temperature compressed air and the high-temperature compressed air are conveyed from the low-temperature air compressed container 7 and the high-temperature air compressed container 8 into the room 2a due to the differential pressure between the room 2a and the building 2 .
In addition, each of the piping systems of the low-temperature air compression container 7 and the high-temperature air compression container 8 has at least two systems, and one system compresses air and the other system compresses the compressed air to the desiccant air conditioner 3. The valve bodies 11a and 11b are controlled to be opened and closed so as to alternately carry out the conveying process.

Next, the desiccant air conditioner 3 will be described with reference to FIG.
In FIG. 2, the desiccant air conditioner 3 includes a processing flow path 16 that allows low-temperature compressed air supplied from a low-temperature compressed air pipe 13 to flow and expands, and a regeneration flow path 17 that flows high-temperature compressed air from a high-temperature compressed air pipe 14. And. A desiccant rotor 19 is rotatably disposed in a region extending between the processing channel 16 and the regeneration channel 17 by a driving source (not shown).

The low-temperature compressed air introduced into the processing channel 16 is expanded in the processing channel 16 so that the temperature and pressure are reduced, and moisture is adsorbed by passing through the desiccant rotor 19 to be dehumidified. On the downstream side of the desiccant rotor 19, a cooling coil 20 as a heat exchanger and an air supply damper 21 for supplying cold air to the room 2a are sequentially arranged, and the low-temperature compressed air passing through these air and outdoor air It is supplied to the room 2a on each floor via the pipe 24.
The cooling coil 20 adjusts the cold air supplied from, for example, a cooling tower (refrigerator) or the like (not shown) to a required temperature by contacting the cold compressed air, and is operated by a cold water pump (not shown). The air supply damper 21 adjusts the air supply amount to the room according to the opening degree, the supply amount by the low-temperature compressed air pipe 13, and the intake amount of the outside air.

Further, the high-temperature compressed air introduced into the regeneration flow path 17 of the desiccant air conditioner 3 is conveyed as it is to the desiccant rotor 19, and the desiccant rotor 19 releases the adsorbed moisture by the hot air of the high-temperature compressed air and regenerates it. The high-temperature compressed air that has passed through the desiccant rotor 19 is exhausted through the opening of the exhaust damper 23 disposed on the downstream side thereof. The exhaust amount from the regeneration channel 17 to the outside is adjusted by the opening degree of the exhaust damper 23 and the supply amount by the high temperature compressed air pipe 14.
In addition, regarding the air supply damper 21 and the exhaust damper 23, if the supply air flow rate to the room 2a and the exhaust flow rate to the outdoors are constant, the opening degree of each damper 21, 23 may be constant, and the opening degree using power is used. There is no need to adjust. Moreover, you may make it control the opening degree of each damper 21 and 23 manually.

The air conditioning system 1 according to the present embodiment has the above-described configuration. Next, an air conditioning method of the air conditioning system 1 will be described.
First, in FIG. 1, in the air compression process, after the outside air is filled into one of the low-temperature air compression container 7 and the high-temperature air compression container 8 through the air distribution pipe 10 of the air compression mechanism 5, a valve on each air side of the air distribution pipe 10 is provided. The body 11a, the low-temperature compressed air pipe 13 and the valve body 11b on the high-temperature compressed air pipe 14 side are closed, and the air is compressed using the water pressure due to the difference in height between the water storage tank 4 and the air compression containers 7 and 8. . Moreover, the air in the high-temperature air compression container 8 is set to a high temperature of, for example, about 50 ° C. by compression, and the low-temperature air compression container 7 is, for example, 20 ° C. because the container is cooled by cold water supplied to the water tank 12. It is adjusted to a low temperature.

  In the next air conveyance process, in one of the low-temperature air compression container 7 and the high-temperature air compression container 8 in which compressed air is produced, when the valve body 11b on the desiccant air conditioner 3 side is opened, the compression containers 7 and 8 Due to the pressure difference with each room 2a of the building 2, the low-temperature compressed air pipe 13 is conveyed through the low-temperature compressed air pipe 13, and the high-temperature compressed air is conveyed through the high-temperature compressed air pipe 14.

  The low-temperature compressed air is high-humidity air, and is expanded by being supplied into the processing flow path 16 in the desiccant air conditioner 3 shown in FIG. Then, by passing the expanded low-temperature air through the semicircular portion of the desiccant rotor 19, moisture in the low-temperature air is adsorbed by the desiccant and dehumidified. The dehumidified low-temperature air passes through the cooling coil 20 to indirectly contact the cold water in the cooling coil 20 to be adjusted to a required low temperature, and passes through the air supply damper 21 from the pipe 24 to the interior of the building 2. 2a. Further, the desiccant rotor 19 that has absorbed moisture is rotated toward the regeneration channel 17 by a drive source (not shown).

  On the other hand, the high-temperature compressed air conveyed through the high-temperature compressed air pipe 14 is supplied to the regeneration channel 17 in the desiccant air conditioner 3 and passes through the semicircular portion of the desiccant rotor 19 that absorbs moisture while maintaining the high-temperature and low-humidity compressed air. Then, moisture is released from the desiccant to regenerate the desiccant rotor 19. The absorbed high-temperature compressed air is discharged from the opening of the exhaust damper 23 to the outside air. The dried desiccant rotor 19 is rotated by the driving source and returns to the dehumidifying treatment flow path 16 again.

According to the air conditioning system 1 according to the present embodiment, the low temperature compressed air 7 and the high temperature air compressed container 8 of the two systems in the air compression mechanism 5 are repeatedly compressed and supplied with the external air that is alternately filled. The compressed air is supplied to the desiccant air conditioner 3 sequentially through the pipe 13 and the high-temperature compressed air pipe 14 to absorb and regenerate the desiccant rotor 19, while adjusting the temperature and humidity to each room 2 a of the building 2. Can supply.
In the above description, the desiccant air conditioner 3 performs air cooling and dehumidification, but only one of them may be controlled.

  As described above, according to the air conditioning system 1 according to the present embodiment, the compression of air in the low-temperature air compression container 7 and the high-temperature air compression container 8 is performed by water pressure by the height difference from the water storage tank 4 without using an air compressor. Moreover, the compressed air produced in each of the air compression containers 7 and 8 can be conveyed to the desiccant air conditioner 3 due to a pressure difference with the room 2a of the building 2. Therefore, since only the drive source of the desiccant rotor 19 and the drive pump of the cooling coil 20 need be used as power for cooling air conditioning, the energy saving performance can be improved.

  The air-conditioning system 1 according to the present invention is not limited to the above-described embodiment, and can be appropriately changed or replaced without departing from the gist of the present invention. Hereinafter, the same reference numerals are used for the same or similar members and parts used in the above-described embodiments, and modifications of the present invention will be described.

  In the embodiment described above, in the processing flow path 16 of the desiccant air conditioner 3, the compressed air for low temperature is expanded and then brought into contact with the cooling coil 20 of the water cooling system to cool the air. The cooling coil 20 may not be provided. For example, in a cold district, the air may be directly cooled by the outside air. Alternatively, in the case where the low-temperature air compression container 7 can be sufficiently cooled only by the cooling of the water storage tank 4 injected into the low-temperature air compression container 7, an external cooling device such as the cooling coil 20 is not necessary. . In these cases, since a chilled water pump or the like used for an external cooling device such as the cooling coil 20 is unnecessary, the energy saving performance can be further improved.

In the above-described embodiment, the piping system of the low-temperature air compression container 7 and the high-temperature air compression container 8 may be one system each instead of two systems. The valve bodies 11a and 11b may be controlled to be opened and closed so that the process of compressing air by the container 8 and the process of conveying the compressed air toward the desiccant air conditioner 3 are alternately performed.
Moreover, in the process flow path 16 of the desiccant air conditioner 3, you may enable it to install and heat a heating coil with the cooling coil 20 as a heat exchanger.
In the above-described embodiment, the water tank 4 is installed on the ground. However, the installation position of the water tank 4 may be on the roof of the building 2 or inside the building 2. Moreover, instead of the water tank 4, a water supply, a river, a lake, and the sea may be used directly, and these are collectively referred to as a water storage means.

In the above-described embodiment, the low-temperature compressed air container 7 and the high-temperature compressed air container 8 are separately provided to convey the low-temperature compressed air and the high-temperature compressed air to the desiccant air conditioner 3, respectively. If it is possible to achieve this, only one type of compression container may be installed.
In this case, pressurization is performed until the desiccant rotor 19 that has absorbed moisture reaches 50 ° C. or higher, which can be regenerated while being compressed and cooled by filling the outside air with a compression container. When high-pressure compressed air is supplied to the desiccant air conditioner 3, the compressed air is supplied as it is to the regeneration channel 17, and the compressed air is temporarily increased to a pressure slightly higher than atmospheric pressure in the processing channel 16. The compressed air may be cooled by being expanded, and the compressed air may be passed through the desiccant rotor 19 to be absorbed into the room 2a.

  In the above-described embodiment, the desiccant air conditioner 3 is used as the air conditioner, but an air conditioner that does not use the desiccant rotor 19 may be used instead. In this case, as shown in FIG. 3, it is not necessary to install the regeneration channel 17 in the air conditioner 25, and compressed air is supplied from the compressed container to the processing channel 16 of the air conditioner 25 through the compressed air pipe 26. Then, the temperature of the compressed air is lowered by the expansion. Then, the compressed air can be adjusted to a required temperature by the cooling coil 20 and the heating coil 27 and supplied to each room 2 through the pipe 24. Therefore, the drive source of the desiccant rotor 19 becomes unnecessary, and the energy saving performance can be further improved.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Building 2a Room 3 Desiccant air conditioner 4 Water storage tank 5 Air compression mechanism 7 Low temperature air compression container 8 High temperature air compression container 10 Air distribution pipe 13 Low temperature compression air piping 14 High temperature compression air piping 16 Processing flow path 17 Regeneration flow path 19 Desiccant rotor 20 Cooling coil 21 Air supply damper 23 Exhaust damper 25 Air conditioner

Claims (4)

Water storage means;
An air compression container that compresses air by water pressure due to a height difference between the water storage means, a compressed air pipe that conveys compressed air produced in the air compression container, and
An air conditioner that dehumidifies and / or adjusts the temperature of the compressed air conveyed by the compressed air pipe and supplies the compressed air to the building interior;
An air conditioning system, wherein compressed air is conveyed to the air conditioner by a pressure difference between the compressed air in the compressed air container and a room interior. The air compression container comprises a low temperature air compression container and a high temperature air compression container,
The air conditioner expands the low-temperature compressed air conveyed from the low-temperature air compressed container, dehumidifies it with a desiccant rotor, and supplies it to the room, and the high-temperature compressed air conveyed from the high-temperature air compressed container The air conditioning system according to claim 1, wherein the air conditioning system is a desiccant air conditioner provided with a regeneration flow path for regenerating the desiccant rotor.   Low-temperature compressed air piping for supplying the low-temperature compressed air in the low-temperature air compression container to the processing flow path of the desiccant air conditioner, and high-temperature compression for supplying the high-temperature compressed air in the high-temperature air compression container to the regeneration flow path of the desiccant air conditioner The air conditioning system according to claim 2 provided with air piping.   The air conditioner expands the hot compressed air conveyed from the air compressed container to a low temperature, dehumidifies it with a desiccant rotor, and supplies it to the room, and the hot compressed air conveyed from the air compressed container The air conditioning system according to claim 1, which is a desiccant air conditioner provided with a regeneration flow path for regenerating the desiccant rotor.

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