JP2011242036A - Air conditioner and system using deep seawater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of cooling a heat exchanged medium to a temperature lower than that of the deep seawater and capable of producing fresh water from the deep seawater efficiently, and a system using deep seawater.SOLUTION: The system using deep seawater includes: a first heat exchanger 8a cooling the heat exchanged medium by using the deep seawater; and turbo refrigerating machines 9a, 9b further cooling the heat exchanged medium of which temperature is lowered by the heat exchange with the deep seawater by using a refrigerant. The air conditioners uses the heat exchanged medium cooled by the turbo refrigerating machines 9a, 9b as a cold source. The air conditioner and the system using deep seawater further include: a second heat exchanger 8b cooling the cooling water of which temperature is increased by cooling the refrigerant of the turbo refrigerant machines 9a, 9b by using the deep seawater of which temperature is increased by the heat exchange with the heat exchanged medium; and a desalination unit 300 performing the desalination of the deep seawater of which temperature is increased by cooling the cooling water by the second heat exchanger 8b.

Description

  The present invention relates to an air conditioner and a deep ocean water utilization system that cools a heat exchange medium with deep ocean water.

  Deep sea water existing in the deep sea from 200 m has been actively used. For example, Patent Documents 1 to 4 describe techniques for using deep sea water for cooling and heating (air conditioners), and Patent Document 5 describes desalination of deep sea water. Techniques to do this are disclosed.

JP 2006-180735 A JP 2005-308314 A JP 2005-308313 A JP 2005-156125 A JP 2005-334882 A

  For example, as disclosed in Patent Documents 1 to 4, a simple indirect heat exchanger such as a plate type is used in the technology that uses deep ocean water in an air conditioner. However, in a simple indirect heat exchanger such as a plate type, cold water having a temperature lower than that of the deep ocean water serving as a refrigerant cannot be obtained. Therefore, when using deep ocean water having a temperature of 10 to 12 ° C. at the time of water intake, air conditioning There is a problem that low-temperature cold water required for the apparatus cannot be obtained, and it is difficult to maintain a comfortable environment in the room provided with the indoor unit of the air conditioner.

In addition, in the case of a desalination apparatus that desalinates deep seawater with a desalination apparatus, if the temperature of the deep seawater is too low, the desalination efficiency of the desalination apparatus decreases.
For example, the technique disclosed in Patent Document 5 is a technique for directly desalinating deep ocean water, and requires energy to heat the deep ocean water, resulting in an increase in CO ₂ emissions.

  Therefore, an object of the present invention is to provide an air conditioner and a deep ocean water utilization system that can cool the heat exchange medium to a temperature lower than that of the deep ocean water and that can efficiently produce fresh water from the deep ocean water.

  In order to solve the above problems, the present invention provides a first heat exchanger that cools a heat exchange medium, a chiller unit that further cools the heat exchange medium cooled by the first heat exchanger, and a refrigerant of the chiller unit. Deep sea water use comprising: a second heat exchanger that cools the cooling water that cools the water with deep sea water; and a desalination unit that cools the cooling water of the chiller unit and desalinates the deep sea water that has risen in temperature. System. Moreover, it is set as the air-conditioning apparatus which uses the to-be-heated exchange medium cooled with the 1st heat exchanger as a cold heat source.

  ADVANTAGE OF THE INVENTION According to this invention, a to-be-heated exchange medium can be cooled to low temperature from deep sea water, and also the air-conditioning apparatus and deep sea water utilization system which can manufacture fresh water from deep sea water efficiently can be provided.

It is a figure which shows the structure of the air conditioner which concerns on this embodiment. It is a figure which shows the structure of a heat exchange apparatus. (A) is a figure which shows the state which laid intake piping, (b) is a figure which shows the structure of an intake port. (A)-(c) is a figure explaining the procedure of laying intake piping. It is a figure which mainly shows the change of the temperature of deep sea water.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
As shown in FIG. 1, the deep sea water utilization system according to the present embodiment includes a heat exchange unit 200 that cools a heat exchange medium (cooling water) serving as a cold heat source using deep sea water, and deep sea water. It is set as the air conditioner 1 which has the heat exchange apparatus 1a comprised including the desalination unit 300 which purifies this and manufacture the clean water supplied to a user from the clean water supply apparatus 310. FIG.
The cooling water whose temperature has been increased by cooling the ambient air in the air conditioner terminal 210 (indoor unit) of the air conditioner 1 returns to the heat exchange unit 200 (outdoor unit) and is cooled by deep ocean water.
Moreover, the clean water produced by the desalination unit 300 is supplied from the clean water supply device 310 to the user.

  As shown in FIG. 2, the heat exchange device 1 a according to the present embodiment includes a pumping device 100 that pumps deep ocean water having a depth of about 600 to 800 m, and cooling water that serves as a cooling heat source using the pumped ocean water. It includes a heat exchange unit 200 that cools, and a desalination unit 300 that desalinates deep seawater to produce clean water.

The pumping device 100 is, for example, a water intake pipe 2 that is laid to the deep water depth (600 to 800 m) along the seabed and has a water intake port 2a attached to the tip, for example, two bucket traps 3 arranged in parallel. , A water intake pump 4 for pumping up deep ocean water, a raw water tank 5 for temporarily storing the pumped deep ocean water, and a raw water pump 6 for taking out deep sea water collected in the raw water tank 5. In addition, the drain pipe 5a is connected to the raw | natural water tank 5, and the excess deep sea water in the raw | natural water tank 5 distribute | circulates the drain pipe 5a, and is drained by the ocean. Furthermore, the raw water tank 5 is provided with a regulating valve 5b for regulating the amount of deep ocean water stored.
The control valve 5b is configured to open the deep sea water accumulated in the raw water tank 5 to flow to the drain pipe 5a when the amount of deep sea water stored in the raw water tank 5 is reduced.
Moreover, the structure by which the two raw | natural water pumps 6 are arrange | positioned in parallel may be sufficient. With this configuration, even if one raw water pump 6 breaks down, the pumping device 100 can be operated by driving the other raw water pump 6.

For example, as shown in FIG. 3 (a), the heat exchange device 1a is installed indoors in a building BLD constructed in a land part GD near the coast, and the intake pipe 2 is laid along the seabed from the building BLD. Is done.
Although the method of laying the intake pipe 2 is not particularly limited, the vicinity of the sea surface SL (depth of 30 to 50 m) is a depth that affects the navigation of the ship, such as breakage of the intake pipe 2 due to a screw, for example. In this area, it is considered that the intake pipe 2 is laid in the ground.

  For example, as shown in FIG. 3A, a tunnel TN is opened from a building BLD to a depth of 30 to 50 m below the sea level, and the intake pipe 2 is placed in the tunnel TN from the building BLD to a depth of 30 to 50 m below the sea level. Lay in. Further, the tip of the tunnel TN lays the intake pipe 2 up to the depth of pumping deep seawater (600 to 800 m) by sinking the intake pipe 2 attached with a plurality of weights 2b to the seabed.

In addition, a configuration in which the weight 2b is not attached to the tip of the intake pipe 2 to which the intake port 2a is attached, and the intake port 2a floats by floating several m to several tens of meters from the sea floor by its own buoyancy or the like. With this configuration, it is possible to prevent the sediment from being taken in from the water intake port 2a when the sediment on the seabed soars. Although the shape of the water intake 2a is not limited, For example, as shown to (b) of FIG. 3, it is set as the structure which the some water intake hole 2a2 opens in the side surface of the cylindrical main body 2a1.
According to this configuration, the water intake hole 2a2 does not open in the zenith portion 2a3 of the water intake port 2a in which the floating material that sinks in the seawater easily collects, and the amount of suspended matter taken up by the water intake port 2a can be suppressed.

  Further, by providing a larger number of intake holes 2a2 than necessary, it is possible to suppress the occurrence of a failure due to the intake port 2a being blocked by suspended matter in the sea. The intake pipe 2 shown in FIG. 3 (a) is provided with one intake port 2a. For example, the intake pipe 2 is branched into two or more ends, and each of the branched ends has an intake port 2a. The intake pipe 2 provided may be sufficient.

  Moreover, it is preferable that the intake pipe 2 is made of, for example, a high-density polyethylene pipe having excellent corrosion resistance and the progress of corrosion is suppressed even when the air conditioner 1 is used for a long period of time. With this configuration, there is no need for maintenance work at the sea floor where maintenance work is substantially impossible, and the air conditioner 1 can be operated over a long period of time.

  The intake pipe 2 can be laid, for example, according to the procedure shown in FIGS. As shown in FIG. 4 (a), the tunnel TN is opened by a method such as boring (horizontal boring) from the land part GD toward the seabed 30 to 50 m below the surface of the water, and a drilling device (for example, a drill) used at that time 400) pulls the wire 401 and passes the wire 401 into the tunnel TN. Then, when only the drill 400 is pulled up to the land portion GD side after passing through the tunnel TN, the wire 401 remains in the tunnel TN.

Then, as shown in FIG. 4 (b), for example, the tip of the intake pipe 2 and the tip of the wire 401 passing through the tunnel TN are wound around the work ship 402 that sails on the sea surface SL. It connects in the sea and the wire 401 is pulled up to the land part GD side by a winch or the like (not shown).
The intake pipe 2 is pulled by the wire 401 and travels through the tunnel TN, and the intake pipe 2 is laid in the tunnel TN.

Thereafter, as shown in FIG. 4 (c), when the water intake pipe 2 to which a plurality of weights 2b are appropriately attached is released from the reel 403 and thrown into the sea, the work ship 402 is advanced in the direction of laying the water pipe 2. The intake pipe 2 sinks in the sea with the weight of the weight 2b, and the intake pipe 2 can be laid on the seabed.
Thus, although the intake pipe 2 can be laid on the seabed, the method shown in FIGS. 4A to 4C is an example and is not limited to this method.

Returning to FIG. The heat exchange unit 200 is a device that cools the heat exchange medium by exchanging the pumped deep ocean water and the heat exchange medium. In the heat exchange apparatus 1a of this embodiment, a chiller plant is used as the heat exchange unit 200. It is characterized by using.
In the present embodiment, the heat exchange medium is cooling water that is a cooling heat source of the air conditioner 1 (see FIG. 1). However, the heat exchange medium is not limited to cooling water, for example, an alternative chlorofluorocarbon A refrigerant such as

  Cold deep ocean water (temperature: T11) pumped up by the pumping device 100 and stored in the raw water tank 5 is sent to the heat exchange unit 200 by the raw water pump 6. The deep sea water sent to the heat exchange unit 200 is introduced into the heat exchanger (first heat exchanger 8a), and the cooling water is fed by the cooling pump 10 as the temperature rises at the air conditioning terminal 210 and is indicated by the broken line. (Temperature: T21 (however, T21> T11)) and heat exchange to cool the cooling water. Then, the deep sea water (T11 → T12) whose temperature has been increased by heat exchange with the cooling water is introduced into another heat exchanger (second heat exchanger 8b). The first heat exchanger 8a and the second heat exchanger 8b are, for example, plate heat exchangers.

  The first heat exchanger 8a is disposed in parallel with the flow path (main flow path 200a) through which the deep sea water flows through the heat exchange unit 200, and the flow of deep sea water flowing into the first heat exchanger 8a is adjusted. Regulated by valve 8a1. The second heat exchanger 8b is also arranged in parallel with the main flow path 200a, and the circulation amount of the deep sea water flowing into the second heat exchanger 8b is adjusted by the control valve 8b1.

The adjustment of the flow rate of the deep sea water by the control valve 8a1 and the adjustment of the flow rate of the deep sea water by the control valve 8b1 are based on, for example, the temperature of the deep sea water, the set temperature set by the user at the air conditioning terminal 210, and the like. Control is performed by a control device (not shown).
For example, when the temperature of the deep ocean water is high, the control device (not shown) increases the flow rate of the deep ocean water flowing into the first heat exchanger 8a and the second heat exchanger 8b, and the cooling water by the ocean deep water and Increase cooling effect of cooling water.

  In addition, in the heat exchange unit 200, for example, two turbo chillers 9a and 9b are arranged in series, and a part of the cooling water (the part of which is cooled by exchanging heat with deep sea water in the first heat exchanger 8a). ) Is further cooled. The turbo chillers 9a and 9b are configured to reduce the temperature of the cooling water by exchanging heat between the refrigerant circulating inside and the cooling water as indicated by thin solid lines. The refrigerant in the turbo chillers 9a and 9b is cooled by heat exchange with the cooling water circulating as shown by the dotted line by the cooling water pump 11, and the cooling water is supplied to the second heat exchanger by the cooling water pump 11. It circulates between 8b and turbo refrigerator 9a, 9b. And the cooling water (temperature: T31 (however, T31> T12)) whose temperature rose by heat exchange with the refrigerant exchanges heat with deep ocean water in the second heat exchanger 8b, and the temperature drops. On the other hand, the temperature of deep ocean water rises (T12 → T13).

  As described above, the turbo chillers 9a and 9b are configured such that the refrigerant is cooled by the cooling water circulating in the cooling water pump 11, and the chiller unit including the turbo chillers 9a and 9b and the cooling water pump 11 is configured. Is done. And the heat exchange unit 200 becomes a chiller plant provided with a chiller unit.

Furthermore, the heat exchange apparatus 1a according to this embodiment includes a desalination unit 300 that desalinates deep ocean water to produce clean water.
The desalination unit 300 includes a supplementary water tank 12 for temporarily storing (part of) the deep sea water after heat exchange by the second heat exchanger 8 b of the heat exchange unit 200, and deep sea water by the RO membrane module 17. It comprises a SW (Sea Water) RO system 301 for filtering and desalting, a CIP (Cleaning in Place) system 302 for cleaning the SWRO system 301, and an aftertreatment system 303.

The make-up water tank 12 is a water tank for storing a part of the deep sea water after the heat exchange with the second heat exchanger 8b of the heat exchange unit 200, and the deep sea water after the heat exchange with the second heat exchanger 8b. Among them, deep sea water that does not accumulate in the replenishing water tank 12 flows through the drain pipe 201 and is drained to the ocean.
Since the amount of deep ocean water used in the desalination unit 300 changes according to the amount of clean water supplied to the user from the clean water supply device 310, the deep water is stored in the make-up water tank 12 to collect clean water. The required amount of deep ocean water can be stably supplied to the SWRO system 301 without being affected by the amount of water used. The surplus deep ocean water in the replenishing water tank 12 is drained to the ocean through a drain pipe 12a provided in the replenishing water tank 12. Furthermore, the replenishing water tank 12 is provided with a regulating valve 12b that regulates the amount of deep ocean water stored.
The control valve 12b is configured to open the deep sea water accumulated in the make-up water tank 12 to flow into the drain pipe 12a when the amount of deep sea water stored in the make-up water tank 12 is reduced.

In the SWRO system 301 according to the present embodiment, deep sea water passing through the maintenance filter 18 provided for protecting the RO membrane module 17 using the reverse osmosis membrane is pressurized by the pressurizing pump 19 to the RO membrane module 17. Pressurized water is supplied. Further, the SWRO system 301 according to the present embodiment includes a pressure exchanger 24. The pressure exchanger 24 is a device that assists the drive of the pressurizing pump 19 by being driven by the pressure of pressurized deep sea water (pressurized water) discharged from the RO membrane module 17 without passing through the RO membrane. Deep sea water taken into the pressure exchanger 24 from before the filter 18 is pressurized by the pressure exchanger 24 driven by the pressure of the pressurized water, further pressurized by the booster pump 24a, and then returned to the discharge side of the pressure pump 19. It is. With this configuration, part of the work of the pressurization pump 19 can be shared by the pressure exchanger 24, and energy consumed by the pressurization pump 19 can be suppressed. Moreover, the pressure of pressurized water can be utilized effectively.
The pressurized water after driving the pressure exchanger 24 is drained to the ocean through the drain pipe 24b.

  The deep ocean water (fresh water) desalinated by the RO membrane module 17 includes soda ash taken out from the soda ash container 15 provided in the post-processing system 303 and hypochlorite Na / Ca taken out from the hypochlorous acid container 16. Are mixed to form clean water, which is supplied from the clean water supply device 310 to the user. Moreover, the clean water which is not supplied to the user is stored in a water receiving tank (not shown).

The CIP system 302 is a device for cleaning impurities attached to an RO membrane (not shown) mainly provided in the RO membrane module 17 and includes a CIP tank 21, a CIP pump 22, and a bag filter 23.
When the RO membrane module 17 is washed, the deep sea water (fresh water, pressurized water) discharged from the RO membrane module 17 is taken into the CIP tank 21 and necessary chemicals are introduced, and then the bag filter 23 is supplied by the CIP pump 22. Impurities are filtered by being fed under pressure, and returned to the input side of the pressure pump 19 provided in the SWRO system 301.

As described above, the heat exchange device 1a according to the present embodiment includes a pumping device 100 that pumps deep ocean water from a deep sea of 600 to 800 m, and a chiller plant that cools cooling water that is a cooling heat source using the pumped deep ocean water. And a desalination unit 300 that desalinates deep ocean water to produce clean water.
Cooling water is cooled to a temperature lower than that of low-temperature deep ocean water, and deep sea water that has risen in temperature due to cooling of the cooling water is desalinated to produce clean water, thereby efficiently using low-temperature deep ocean water. it can.
Note that the configuration of the desalination unit 300 is determined as appropriate depending on the quality of the deep ocean water that is the raw water of the fresh water, and is not limited to the configuration shown in FIG. Moreover, the chemical | medical agent mixed with fresh water by the post-processing system 303 is suitably changed by the water quality etc. of deep sea water, and is not limited to soda ash and hypochlorite Na / Ca.

The process of cooling the cooling water with the air conditioner 1 (see FIG. 1) in the present embodiment and further producing clean water will be described more specifically with reference mainly to FIG. 5 (see FIGS. 2 to 4 as appropriate). ).
In addition, the specific numerical values (temperature etc.) shown in FIG. 5 are an example for description, and are numerical values which change with the surrounding environment where the air conditioner 1 which concerns on this embodiment is installed, a season, a scale, etc.

For example, when the depth of deep sea water is 600 m and the temperature is 8 ° C., when the deep sea water is pumped up to the sea surface SL by the water intake pump 4 of the pump 100, the ambient temperature (sea water temperature) increases. The temperature rises to 10-12 ° C.
Then, the deep ocean water pumped up is sent to the raw water tank 5 via the bucket trap 3, and, for example, 12 ° C. deep sea water is accumulated in the raw water tank 5.

  The deep sea water at 12 ° C. accumulated in the raw water tank 5 is introduced into the first heat exchanger 8a by the raw water pump 6 and is subjected to the first heat exchange with high-temperature (19 ° C.) cooling water sent from the air conditioning terminal 210 by the cooling pump 10. Heat is exchanged in the vessel 8a. Then, the deep ocean water heat-exchanges with the cooling water in the first heat exchanger 8a and the temperature rises to 16 ° C., and the cooling water heat-exchanges with the deep ocean water in the first heat exchanger 8a and the temperature decreases. To do. Further, the temperature of the cooling water is lowered to 8 ° C. by the two turbo chillers 9 a and 9 b and returns to the air conditioning terminal 210.

  On the other hand, the deep ocean water whose temperature has increased to 16 ° C. by heat exchange in the first heat exchanger 8a is introduced into the second heat exchanger 8b, and the second heat exchanger 8b and the two centrifugal chillers are cooled by the cooling water pump 11. Heat is exchanged with the cooling water circulating through 9a and 9b. The cooling water is in a high temperature state by exchanging heat with the refrigerant in the turbo chillers 9a and 9b, and the temperature of the deep sea water that has been heat exchanged with the cooling water in the second heat exchanger 8b rises to 26 ° C.

  In the second heat exchanger 8b of the heat exchange unit 200, the deep sea water that has been heated to 26 ° C. by exchanging heat with the cooling water of the centrifugal chillers 9a and 9b is branched, and one of them circulates through the drain pipe 201 to the ocean Drained. At this time, it is preferable that the deep ocean water is drained to a depth where the temperature of the deep ocean water to be drained (26 ° C.) and the seawater temperature are equal. That is, when the temperature of the deep sea water flowing through the drain pipe 201 is 26 ° C., it is preferable to drain the deep sea water to a depth where the sea water temperature is 26 ° C.

One of the deep ocean waters that has been discharged from the second heat exchanger 8b and branched off is stored in the make-up water tank 12 of the desalination unit 300, and then taken out by the pressure pump 19 as necessary, and maintained at a temperature of 26 ° C. It is pumped to the RO membrane module 17 via the filter 18.
The deep sea water is desalinated by the RO membrane module 17 by the pressure pressurized by the pressurizing pump 19 and is introduced into the post-processing system 303 as fresh water. And the soda ash and hypochlorous acid Na / Ca are mixed suitably with the fresh water introduced into the post-processing system 303, and water is manufactured.
In addition, the purpose of the above-described necessity is that, for example, the user needs to open the water tap (not shown) provided in the water supply device 310 and use the water produced by the desalination unit 300. This is the case.

  Deep sea water is at a lower temperature (for example, 8 ° C.) than the sea water temperature near the sea surface SL, and can be used for cooling water for cooling, which is a cooling source of the air conditioner 1. For example, since the temperature rises to 10 to 12 ° C., the cooling water cannot be cooled to 10 to 12 ° C. or lower.

Therefore, the heat exchange device 1a (see FIG. 2) of the air conditioner 1 according to the present embodiment includes turbo chillers 9a and 9b in addition to the first heat exchanger 8a that cools the cooling water with deep ocean water. The water can be cooled to 10 to 12 ° C. or lower (for example, 8 ° C.).
And the turbo refrigerator 9a, 9b comprises the chiller unit which cools a refrigerant | coolant with cooling water, and in this embodiment, the cooling water which cooled the refrigerant | coolant of turbo chiller 9a, 9b is made into 2nd heat exchanger 8b. It was configured to cool by exchanging heat with deep ocean water.

  Further, the deep sea water (for example, 26 ° C.) whose temperature has been increased by heat exchange in the second heat exchanger 8 b is desalinated by the desalination unit 300 using the RO membrane module 17 to produce clean water. . When the temperature of the water to be treated (in this embodiment, deep sea water) is too low, the desalination unit 300 using the RO membrane module 17 has a reduced efficiency, and when the water to be treated at 25 to 30 ° C. is desalinated. For example, deep ocean water whose temperature has risen to 26 ° C. can be efficiently desalinated by the desalination unit 300 using the RO membrane module 17, and the fresh water can be efficiently discharged by the desalination unit 300. Can be manufactured.

As described above, the heat exchange device 1a (see FIG. 2) according to the present embodiment includes the first heat exchanger 8a (see FIG. 2) which is a plate heat exchanger provided in the heat exchange unit 200 (see FIG. 2). Turbo chillers 9a and 9b (see FIG. 2) constituting a chiller unit are provided, and cooling water can be cooled using deep ocean water.
Moreover, the cooling water which cools the refrigerant | coolant of the turbo refrigerator 9a, 9b can be cooled with deep sea water.
Further, deep sea water whose temperature has been increased by heat exchange with the cooling water of the turbo chillers 9a and 9b is introduced into the desalination unit 300 (see FIG. 2), and the RO membrane module 17 (see FIG. 2) efficiently introduces fresh water. Can be

As described above, according to the present invention, the heat exchange medium can be cooled to a temperature lower than that of the deep sea water and used as a cold heat source, and further, the deep sea water at a temperature suitable for the desalination treatment is desalinated. Therefore, it is possible to provide an air conditioner (deep ocean water utilization system) that can produce fresh water efficiently. And the outstanding effect that the temperature of deep sea water can be utilized efficiently is produced.
Further, CO ₂ can be greatly reduced as compared with, for example, a conventional air conditioner that cools air using an electrically driven heat pump or a system that cools cooling water using only a turbo refrigerator.

In order to maintain the temperature of deep ocean water introduced into the desalination unit 300 shown in FIG. 2 at 25 to 30 ° C., deep ocean water introduced into the first heat exchanger 8a of the heat exchange unit 200, That is, it is preferable that the temperature of deep ocean water at the inlet of the first heat exchanger 8a is 10 to 12 ° C. Therefore, it is good also as a structure provided with the water temperature control apparatus (not shown) which maintains the temperature of deep sea water in the inlet_port | entrance of the 1st heat exchanger 8a at 10-12 degreeC.
Such a water temperature adjusting device can be, for example, a heating device or a cooling device provided in the raw water tank 5. And what is necessary is just to comprise so that the temperature of the deep sea water in the raw water tank 5 may be maintained at 10-12 degreeC. With this configuration, the temperature of deep ocean water introduced into the desalination unit 300 can be maintained at 25 to 30 ° C., and the efficiency of producing clean water in the desalination unit 300 can be maintained high.

INDUSTRIAL APPLICABILITY The present invention can be suitably implemented in regions along the coast of the tropics, particularly in southern island countries, etc., and improving air conditioning equipment and water supply facilities while suppressing global warming by reducing CO _2. It contributes to.

1 Air conditioner (ocean deep water utilization system)
1a Heat exchanger 8a 1st heat exchanger 8b 2nd heat exchanger 9a, 9b Turbo refrigerator (chiller unit)
11 Cooling water pump (chiller unit)
200 Heat Exchange Unit 210 Air Conditioning Terminal 300 Desalination Unit

Claims (5)

A first heat exchanger for exchanging heat between the deep ocean water and the heat exchange medium to cool the heat exchange medium;
A chiller unit that further cools the heat exchange medium whose temperature has been lowered by heat exchange with the deep sea water with a refrigerant;
Second heat exchange in which the deep sea water whose temperature has been raised by heat exchange with the heat exchange medium and the cooling water whose temperature has been raised by cooling the refrigerant in the chiller unit exchange heat to cool the cooling water. And a heat exchange device configured to include,
An air conditioner characterized in that the heat exchange medium cooled by the heat exchange device is used as a cold heat source.   The air conditioner according to claim 1, further comprising a desalination unit that desalinates the deep sea water whose temperature has been increased by heat exchange with the cooling water using an RO membrane.   The air conditioner according to claim 1 or 2, wherein a temperature of the deep sea water at an inlet of the first heat exchanger is 10 to 12 ° C. A first heat exchanger for exchanging heat between the deep ocean water and the heat exchange medium to cool the heat exchange medium;
A chiller unit that further cools the heat exchange medium whose temperature has been lowered by heat exchange with the deep sea water with a refrigerant;
Second heat exchange in which the deep sea water whose temperature has been increased by heat exchange with the heat exchange medium and the cooling water whose temperature has been increased by cooling the refrigerant in the chiller unit exchange heat to cool the cooling water. And a heat exchange device configured to include,
A deep sea water utilization system comprising a desalination unit that desalinates the deep sea water whose temperature has been increased by exchanging heat with the cooling water in the second heat exchanger using an RO membrane.   5. The deep sea water utilization system according to claim 4, wherein a temperature of the deep sea water at an inlet of the first heat exchanger is 10 to 12 ° C. 6.

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