JP7170580B2 - Slurry production equipment, heat medium circulation circuit and air conditioning system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a slurry manufacturing apparatus for manufacturing hydrate slurry, a heat medium circulation circuit, and an air conditioning system.

Water is widely used as a heat carrier in current air conditioning systems. Since water remains in a liquid state over the typical operating temperature range of air conditioning systems such as room cooling, only the sensible heat of the temperature change of water is available for heat exchange. On the other hand, some aqueous solutions of specific compounds and water, which are used as heat carriers, form hydrates when cooled within the operating temperature range of the air conditioning system. A hydrate can use not only the sensible heat corresponding to the temperature change without phase change but also the latent heat generated when a solid changes to a liquid for heat exchange. For this reason, by introducing a hydrate slurry in which hydrate particles are mixed with water into the heat medium circulation circuit in an air conditioning system, it is possible to utilize both sensible heat and latent heat, thereby increasing the cooling efficiency. Improvement and power consumption reduction effects are expected.

When the hydrate slurry is introduced into the air conditioning system and circulated in the heat medium circulation circuit, the particulate hydrate contained in the hydrate slurry is converted into large particles in the heat medium circulation circuit. , or adhere to pipes or valves, etc., which may hinder circulation in the heat medium circulation circuit. If the circulation in the heat medium circulation circuit is interrupted, the heat exchange efficiency decreases. Therefore, conventionally, an apparatus for continuously producing a highly fluid hydrate slurry has been disclosed (see Patent Document 1).

Patent Document 1 discloses a heat storage tank storing an aqueous solution, a heat exchanger arranged in the heat storage tank to cool a heat storage medium in the heat storage tank to generate a hydrate, and water adhering to the wall surface of the heat exchanger. and a scraping mechanism for scraping off the Japanese material. In Patent Document 1, by controlling the timing of operating the scraping mechanism and scraping off the hydrate from the wall surface of the heat exchanger by the scraping mechanism, the particles of the hydrate are mixed in the aqueous solution, and the fluidity is obtained. Continuous production of high hydrate slurry.

JP-A-2000-146475

In Patent Literature 1, the hydrate adhering to the wall surface of the heat exchanger is forcibly scraped off by a scraping mechanism, so there is a possibility that the hydrate particles will be scraped off in a state of large particle size. In this case, a hydrate slurry with insufficient fluidity is produced, which may hinder circulation in the heat medium circulation circuit.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a slurry production apparatus, a heat medium circulation circuit, and an air conditioning system capable of producing a hydrate slurry with improved fluidity.

A slurry production apparatus according to the present invention cools a heat medium composed of an aqueous solution containing a compound to generate hydrate particles, and produces a hydrate slurry in which the hydrate particles and the aqueous solution are mixed. A slurry manufacturing apparatus to be manufactured, which includes a housing having a heat medium flow path, and a heat medium disposed at a distance from upstream to downstream of the heat medium flow path to exchange heat with the heat medium flowing through the heat medium flow path. Each of the plurality of heat exchangers has a gap through which the heat medium passes, and the size of each gap decreases in order from upstream to downstream of the heat medium flow path It is set.

According to the present invention, the size of the gap in each of the plurality of heat exchangers arranged in the heat medium flow path is set to decrease in order from upstream to downstream of the heat medium flow path. For this reason, the particle size of the hydrate produced in each heat exchanger decreases in order from upstream to downstream of the heat medium flow path, and a hydrate slurry having a small particle size and improved fluidity can be produced. can be done.

1 is a schematic diagram of a slurry production apparatus in Embodiment 1. FIG. FIG. 2 is a schematic diagram of a slurry production apparatus in Embodiment 2; FIG. 10 is a schematic diagram of a slurry production apparatus in Embodiment 3; FIG. 11 is a schematic diagram showing a heat exchanger of a slurry production apparatus in Embodiment 4; FIG. 11 is a schematic diagram of an air conditioning system in Embodiment 5;

Embodiment 1.
FIG. 1 is a schematic diagram of a slurry production apparatus according to Embodiment 1. FIG. In FIG. 1, white arrows indicate the flow of the heat medium, and solid arrows indicate the flow of the refrigerant.
The slurry production apparatus 100 includes a housing 10, a plurality of heat exchangers 20a to 20c (hereinafter collectively referred to as heat exchangers 20), and a plurality of filter members 30a to 30b (hereinafter collectively referred to as filter members 30). A plurality of heat exchangers 20 and a plurality of filter members 30 are arranged within the housing 10 .

The housing 10 has a rectangular shape. The housing 10 has an inlet 11 through which the heat medium flows and an outlet 12 through which the heat medium flows out. The heat medium flowing through the heat medium flow path 13 is composed of an aqueous solution containing a compound, generates hydrate particles when cooled, and is a hydrate slurry in which the hydrate particles and the aqueous solution are mixed. is generated. A hydrate changes into a solid phase or a liquid phase by heat exchange. The phase change temperature varies with the type and concentration of the aqueous solution.

The housing 10 is made of a material selected according to the heat medium. The housing 10 is made of a corrosion-resistant material such as stainless steel when the aqueous solution, which is the slurry material that constitutes the heat medium, is corrosive. Further, when the heat medium flows through the heat medium flow path 13, the housing 10 has the following heat insulating structure in order to prevent a decrease in efficiency due to heat exchange with, for example, air outside the heat medium flow path 13. may be That is, the housing 10 may have a double structure sandwiching an air layer or a structure having a heat insulating material formed on the outside.

A plurality of heat exchangers 20 are provided to cool the heat medium flowing through the heat medium flow path 13 and are arranged at intervals from upstream to downstream of the heat medium flow path 13 . The heat exchanger 20 has an inlet pipe 21 a into which refrigerant flows, an outlet pipe 21 b through which refrigerant flows out, and a plurality of communication pipes 22 . The inlet pipe 21a and the outlet pipe 21b extend across the heat medium flow path 13 and are spaced apart from each other. A plurality of communication pipes 22 are arranged in parallel and spaced apart in the transverse direction between the inlet pipe 21a and the outlet pipe 21b. Refrigerant flows into the heat exchanger 20 from the refrigerant inlet 21aa of the inlet pipe 21a, passes through each of the communication pipes 22, and then flows out from the refrigerant outlet 21ba of the outlet pipe 21b. The inlet pipe 21a, the outlet pipe 21b, and the plurality of communication pipes 22 that constitute the heat exchanger 20 are made of metal pipes such as copper or stainless steel that have high pressure resistance and high heat conductivity.

The temperature of the refrigerant flowing into the heat exchanger 20 is set lower than the temperature at which hydrate particles are generated from the aqueous solution flowing through the heat medium flow path 13 . Therefore, the heat medium in the heat medium flow path 13 is cooled by heat exchange with the refrigerant, and hydrate is produced on the surface of the heat exchanger 20 . The produced hydrate is separated from the surface of the heat exchanger 20 by the shear force when the heat medium flows. Since the phase change temperature of the aqueous solution that constitutes the heat transfer medium varies depending on the type and concentration of the aqueous solution, the temperature of the refrigerant is adjusted according to the properties of the compound used so as to generate a hydrate. . The adjustment of the temperature of the coolant will be described in Embodiment 5 below.

In the heat exchanger 20 , a plurality of communication pipes 22 are arranged at intervals, so that gaps 23 are formed between the communication pipes 22 , and the heat medium passes through these gaps 23 . The gap 23 of each heat exchanger 20 is set smaller in order from upstream to downstream of the heat medium flow path 13 . In other words, in the case of FIG. 1, the gap 23 becomes large, medium, and small in order of the heat exchanger 20a, the heat exchanger 20b, and the heat exchanger 20c. As a specific structure, the number of communicating pipes 22 increases in the order of heat exchanger 20a, heat exchanger 20b, and heat exchanger 20c, so that gap 23 becomes smaller. When the gap 23 is small in this way, fine hydrate particles can be produced compared to when the gap 23 is large. Therefore, minute hydrate particles are generated in the order of heat exchanger 20a, heat exchanger 20b, and heat exchanger 20c.

The filter member 30 separates from the surface of the heat exchanger 20 and uniformizes the particle size of the hydrate flowing through the heat medium flow path 13, and the hydrate is distributed to the surface of the heat exchanger 20 further downstream of the heat medium. It is installed to prevent clogging of the heat medium flow path 13 due to adhesion. The filter member 30 has a mesh structure formed of metal or resin, and can retain the hydrate of large-diameter particles larger than the size of the mesh. Stainless steel having corrosion resistance and durability, for example, is used as the metal forming the filter member 30 . In addition, the large-sized particles here refer to particles that have grown to a particle diameter of 100 μm or more, for example.

The hydrate retained by the filter member 30 becomes smaller than the mesh size due to melting due to heat exchange with the heat medium and wear due to collision force with the heat medium flowing through the heat medium flow path 13 . Hydrate that has become smaller than the mesh size flows to the heat exchanger 20 on the downstream side.

Here, each filter member 30 is configured such that the mesh size decreases in order from upstream to downstream of the heat medium flow path 13 . That is, in the case of FIG. 1, the mesh size becomes smaller in the order of the filter member 30a and the filter member 30b. As a result, the particle size of the hydrate generated in the heat exchanger 20 and flowing through the heat medium flow path 13 can be made smaller in order from the upstream side to the downstream side of the heat medium flow path 13 .

Next, operation of the slurry manufacturing apparatus 100 will be described.
The heat medium that has flowed into the heat medium flow path 13 is cooled while passing through each of the heat exchangers 20 to generate hydrate on the surface of each heat exchanger 20 . The hydrate produced in each heat exchanger 20 is separated from the surface of the heat exchanger 20 by shear force when the heat medium flows, and is dispersed in the heat medium. As a result, a hydrate slurry in which a solid phase and a liquid phase coexist is produced.

Here, the particle size of the hydrate produced in heat exchanger 20 corresponds to the size of gap 23 . In the heat medium flow path 13, the gaps 23 of the heat exchangers 20 become large, medium, and small in order of the heat exchangers 20a, 20b, and 20c. The particle size of the hydrate obtained decreases toward the downstream side of the heat medium flow path 13 . Also in the filter member 30, the mesh size decreases in the order of the filter member 30a and the filter member 30b, so that the particle diameter of the hydrate passing through each filter member 30 decreases.

Therefore, the hydrate slurry that finally flows out from the heat medium flow path 13 has a small and uniform hydrate particle size, and the slurry production apparatus 100 can produce a highly fluid hydrate slurry. . The hydrate slurry thus produced circulates satisfactorily within the heat medium circulation circuit to which the slurry production apparatus 100 is applied.

Although the filter member 30 is provided in the first embodiment, each heat exchanger 20 does not allow hydrate particles larger than the gap 23 to pass through without the filter member 30 . Therefore, the heat exchanger 20 itself functions as a filter member, and a hydrate slurry having a uniform particle size and high fluidity can be produced without the filter member 30 . However, providing the filter member 30 can produce a hydrate slurry with higher fluidity.

As described above, in Embodiment 1, a heat medium composed of an aqueous solution containing a compound is cooled to generate hydrate particles, and water in which the hydrate particles and the aqueous solution are mixed It is a slurry production apparatus for producing a wet slurry. In the first embodiment, the housing 10 having the heat medium flow path 13, and a plurality of heat medium flow paths 13 arranged in the heat medium flow path 13 to exchange heat with the heat medium flowing through the heat medium flow path 13 to cool the heat medium. and a heat exchanger 20 of . Each of the plurality of heat exchangers 20 has a gap 23 through which the heat medium passes, and the size of each gap 23 is set smaller in order from upstream to downstream of the heat medium flow path 13 .

Thus, each of the plurality of heat exchangers 20 arranged in the heat medium flow path 13 has a gap 23 through which the heat medium passes, and the size of each gap 23 varies from the upstream side of the heat medium flow path 13 to It is set to be smaller in order of downstream. For this reason, the particle size of the hydrate produced in each heat exchanger 20 decreases in order from upstream to downstream of the heat medium flow path 13, and a hydrate slurry having a small particle size and improved fluidity is obtained. can be manufactured.

In Embodiment 1, the heat medium flow path 13 is provided with the filter member 30 that uniformizes the particle size of the hydrate particles flowing through the heat medium flow path 13 .

By providing the filter member 30 in this way, it is possible to produce a hydrate slurry having a more uniform particle size and high fluidity.

Embodiment 2.
FIG. 2 is a schematic diagram of a slurry manufacturing apparatus according to Embodiment 2. FIG.
Although the temperature of the refrigerant flowing through each heat exchanger 20 was not particularly described in the above first embodiment, in the second embodiment, the temperature of the refrigerant flowing through each heat exchanger 20 is determined by the heat exchanger 20a, heat exchange It is characterized in that the heat exchanger 20b and the heat exchanger 20c are set higher in this order. Moreover, in FIG. 2, the filter member 30 is removed from the slurry manufacturing apparatus 100 of Embodiment 1 shown in FIG. Other configurations are the same as those of the first embodiment. The following description will focus on the differences between the second embodiment and the first embodiment.

The operation of the slurry manufacturing apparatus 200 of Embodiment 2 will be described below.
The heat medium that has flowed into the heat medium flow path 13 is first cooled by coming into contact with the heat exchanger 20a. Since the gap 23 of the heat exchanger 20a is large, the flow of the heat medium is not disturbed when passing through the gap 23 of the heat exchanger 20a, and the heat medium enters a supercooled state. Therefore, the particle size of the hydrate produced in the heat exchanger 20a tends to increase.

The heat medium in the supercooled state is released from the supercooled state by passing through the heat exchanger 20b and the heat exchanger 20c, in which the temperature of the refrigerant increases in order, while being in contact therewith. By eliminating the supercooled state in this way, in the heat exchangers 20b and 20c, a hydrate having a finer particle size than the hydrate produced in the heat exchanger 20a is produced. be done. That is, the particle size of the hydrate produced decreases in the order of the heat exchanger 20a, the heat exchanger 20b, and the heat exchanger 20c. In addition, in the heat medium flow path 13, the heat exchanger 20 itself acts as a filter that does not allow the hydrate particles having a size larger than the gap 23 to pass through, and uniformizes the particle diameter of the hydrate particles.

Therefore, the hydrate slurry that finally flows out from the heat medium flow path 13 has a small and uniform hydrate particle size, and the slurry production apparatus 200 can produce a highly fluid hydrate slurry. .

According to Embodiment 2, the same effect as Embodiment 1 is obtained, and the temperature of the refrigerant flowing through each heat exchanger 20 is set higher in order from upstream to downstream of the heat medium flow path 13, It has the following effects. That is, in Embodiment 2, a hydrate slurry having a small particle size and improved fluidity can be produced.

Although the filter member 30 is omitted in FIG. It is good also as a structure provided with.

Embodiment 3.
FIG. 3 is a schematic diagram of a slurry manufacturing apparatus according to Embodiment 3. FIG.
A slurry manufacturing apparatus 300 of Embodiment 3 differs from Embodiment 1 shown in FIG. 1 and Embodiment 2 shown in FIG. is the same as in the first and second embodiments. The following description will focus on the differences of the third embodiment from the first and second embodiments.

In Embodiments 1 and 2, each heat exchanger 20 has a configuration in which a plurality of communication pipes 22 are arranged in parallel between the inlet pipe 21a and the outlet pipe 21b. On the other hand, each heat exchanger 20 (20d to 20f) of the third embodiment has a structure in which a plurality of communication pipes 24 are combined in a grid pattern between an inlet pipe 21a and an outlet pipe 21b. The temperature of the refrigerant flowing inside the heat exchanger 20d, the heat exchanger 20e, and the heat exchanger 20f may be the same temperature. You may set higher in order of the heat exchanger 20f.

In this manner, the plurality of communicating pipes 24 forming the heat exchanger 20 may be arranged in parallel, or may be combined in a grid pattern.

According to the third embodiment, effects similar to those of the first and second embodiments are obtained. In addition, in the third embodiment, the plurality of communicating tubes 24 are combined in a grid pattern, so that the gap 23 is smaller than in a configuration in which they are arranged in parallel. In the example of FIG. 3, the length of the gap 23 in the vertical direction is shorter than in FIGS. 1 and 2, so heat exchange is performed in a state in which the length of the hydrate in the vertical direction is shorter than in FIGS. The possibility of peeling off from the container 20 increases. Therefore, a hydrate slurry with higher fluidity can be produced.

Embodiment 4.
Embodiment 4 relates to technology applied to the heat exchanger 20 . The following description will focus on the differences of the fourth embodiment from the first embodiment shown in FIG.

FIG. 4 is a schematic diagram showing a heat exchanger of a slurry production apparatus according to Embodiment 4. FIG.
The heat exchanger 20g of the fourth embodiment includes, in addition to the inlet pipe 21a, the outlet pipe 21b, and the plurality of communicating pipes 22, a plurality of heat transfer fins 25 made of a metal plate having high heat conductivity such as aluminum. have. A plurality of heat transfer fins 25 are dispersedly arranged on the surface of the communicating pipe 22 and joined together. The heat transfer fins 25 may be provided in all the heat exchangers 20 arranged in the heat medium flow path 13 or may be provided in some of the heat exchangers 20 .

In the heat exchanger 20 g configured as described above, hydrates are also produced on the surfaces of the plurality of heat transfer fins 25 . Since each heat transfer fin 25 receives a greater shearing force of the heat medium flowing through the heat medium flow path 13, the hydrate generated by the heat transfer fins 25 is deposited on the surface of the heat transfer fins 25 with a small particle size. peel from. The exfoliated hydrate flows downstream together with the heat transfer medium.

According to the fourth embodiment, effects similar to those of the first embodiment are obtained, and the following effects are obtained by providing the heat exchanger 20 with the plurality of heat transfer fins 25 . That is, it is possible to produce a hydrate having a smaller particle size and uniformity than in the first embodiment, and to produce a hydrate slurry with higher fluidity.

In the example of FIG. 4, the heat transfer fins 25 are joined in a direction facing the flow direction of the heat medium in the heat medium flow path 13, but are joined along the flow direction of the heat medium. may

Further, although the first to fourth embodiments have been described as separate embodiments, the characteristic configurations of the respective embodiments may be appropriately combined to configure the slurry production apparatus. For example, the second embodiment and the third embodiment may be combined, and the connecting pipes of the heat exchangers shown in FIG. 2 may be combined in a grid pattern. Further, a configuration in which the third embodiment and the fourth embodiment are combined and heat transfer fins 25 are provided in the heat exchanger 20 of FIG. 3 may be employed.

Embodiment 5.
Embodiment 5 relates to an air conditioning system provided with a slurry manufacturing apparatus.

FIG. 5 is a schematic diagram of an air conditioning system according to Embodiment 5. FIG.
The air-conditioning system 400 has an indoor unit 410 attached to, for example, an indoor ceiling, an outdoor unit 420 , a slurry manufacturing device 430 and a pump 440 . The slurry manufacturing apparatuses of Embodiments 1 to 4 are applied to the slurry manufacturing apparatus 430 . The air conditioning system 400 has a heat medium circulation circuit A in which the heat medium flow path 13 of the slurry manufacturing apparatus 430, the indoor unit 410, and the pump 440 are connected by a pipe 450, and the heat medium circulates. The air conditioning system 400 also has a refrigerant circulation circuit B in which a plurality of heat exchangers 20 of the slurry manufacturing apparatus 430 and the outdoor unit 420 are connected by pipes 460 and in which the refrigerant circulates. In the air conditioning system 400 , the heat medium flowing through the heat medium circulation circuit A and the refrigerant flowing through the refrigerant circulation circuit B are heat-exchanged in the slurry production device 430 .

The pipe 450 is mainly made of metal or resin having a smooth surface and pressure resistance. The piping 450 is made of corrosion-resistant copper or stainless steel when the slurry material constituting the heat medium is corrosive. Further, the pipe 450 may be configured as follows in order to prevent heat loss caused by heat exchange with the outside air or the like outside the pipe 450 when the heat medium passes through the pipe 450 . That is, the pipe 450 may have a double-pipe structure having a heat insulating layer such as air, or a structure in which the outside of the pipe 450 is heat-insulated with glass wool or the like.

The pump 440 has a motor and a fluid pushing mechanism such as a propeller driven by the motor, and forcibly circulates the heat medium in the heat medium circulation circuit A.

The indoor unit 410 includes an indoor heat exchanger 410a, and cools the room by heat exchange between indoor air and a heat medium. The indoor heat exchanger 410a has a plurality of heat transfer tubes made of copper tubes or the like. discharge to The indoor heat exchanger 410a is configured by, for example, a fin-tube heat exchanger. The heat transfer tube is brought into direct contact with the outside air without covering the outside with a heat transfer material or the like.

The indoor unit 410 is further provided with a temperature sensor, a flow valve, a fan for blowing air to the indoor heat exchanger 410a, and the like. The indoor unit 410 has a function of adjusting the flow rate of the hydrate slurry flowing through the indoor heat exchanger 410a by adjusting the flow rate valve in order to lower the room temperature to the target value.

The outdoor unit 420 includes a compressor, a pressure reducing device and the like (none of which are shown), and forms a refrigerant circulation circuit B together with the heat exchanger 20 of the slurry production device 430 . Although details are not shown in FIG. 5, in the refrigerant circulation circuit B, the refrigerant flowing out of the outdoor unit 420 is branched into three corresponding to the three heat exchangers 20 of the slurry production device 430. . Then, after each refrigerant branched into three passes through the three heat exchangers, they join together and return to the outdoor unit 420 . In the second embodiment, the refrigerant flowing through each heat exchanger 20 is different. By providing a decompression device and adjusting the degree of opening of the decompression device, the temperature of the refrigerant can be varied.

The operation of the air conditioning system 400 will be described below.
The heat medium pushed out from the pump 440 flows into the slurry production device 430 and exchanges heat with the refrigerant flowing out of the outdoor unit 420 and flowing through the refrigerant circulation circuit B in the slurry production device 430 . This heat exchange cools the heat medium to produce a hydrate slurry. The produced hydrate slurry flows out of the slurry production device 430 by the pressure generated by the pump 440, flows into the indoor unit 410, exchanges heat with the room air, and cools the room air. Here, since the hydrate slurry can utilize both sensible heat and latent heat in heat exchange, it is possible to improve cooling efficiency and reduce power consumption compared to the case of using water as a heat medium.

The hydrate slurry is heated by heat exchange with room air, and the solids in the hydrate slurry melt into a liquid. The hydrate slurry that has become liquid is again cooled by exchanging heat with the refrigerant flowing through the refrigerant circulation circuit B in the slurry production device 430 . The room is cooled by continuously repeating the series of cycles described above.

On the other hand, in the refrigerant circulation circuit B, the temperature of the refrigerant flowing into the slurry production device 430 is lower than the temperature at which hydrate particles are generated from the aqueous solution as the heat medium flowing through the heat medium flow path 13. is adjusted by controlling the decompression device in the outdoor unit 420 or the like. Then, the temperature-adjusted refrigerant flows into the slurry production device 430 to cool the heat medium, while a portion of the refrigerant boils due to heat exchange with the heat medium, causing a phase change from liquid to gas. After that, the refrigerant gas is compressed by the compressor, decompressed by the decompression device to lower the temperature, and flows into the slurry production device 430 again. The above series of cycles are continuously repeated.

Since the air conditioning system 400 of Embodiment 5 includes the slurry production apparatus of any one of Embodiments 1 to 4, the highly fluid hydrate slurry produced by the slurry production apparatus is heated. It circulates well without clogging the medium circulation circuit A. Thereby, in the air conditioning system 400, highly efficient heat exchange using the latent heat and sensible heat of the hydrate slurry can be performed, and cooling efficiency can be improved and power consumption can be reduced.

10 housing, 11 inlet, 12 outlet, 13 heat medium flow path, 20 heat exchanger, 20a heat exchanger, 20b heat exchanger, 20c heat exchanger, 20d heat exchanger, 20e heat exchanger, 20f heat exchanger , 20g heat exchanger, 21a inlet pipe, 21aa refrigerant inlet, 21b outlet pipe, 21ba refrigerant outlet, 22 communication pipe, 23 gap, 24 communication pipe, 25 heat transfer fin, 30 filter member, 30a filter member, 30b filter member, 100 slurry production device 200 slurry production device 300 slurry production device 400 air conditioning system 410 indoor unit 410a indoor heat exchanger 420 outdoor unit 430 slurry production device 440 pump 450 piping 460 piping A heat medium circulation circuit, B refrigerant circulation circuit;

Claims (8)

A slurry production apparatus for producing hydrate particles by cooling a heating medium composed of an aqueous solution containing a compound, and producing a hydrate slurry in which the hydrate particles and the aqueous solution are mixed. hand,
a housing having a heat medium flow path;
a plurality of heat exchangers arranged at intervals from upstream to downstream of the heat medium flow path and exchanging heat with the heat medium flowing through the heat medium flow path to cool the heat medium;
Each of the plurality of heat exchangers has a gap through which the heat medium passes, and the size of each gap is set smaller in order from upstream to downstream of the heat medium flow path. 2. The slurry manufacturing apparatus according to claim 1, further comprising a filter member provided in said heat medium flow channel for uniformizing particle diameters of particles of said hydrate flowing through said heat medium flow channel. 3. The slurry manufacturing apparatus according to claim 1, wherein the temperature of the refrigerant flowing through each of the plurality of heat exchangers is set higher in order from upstream to downstream of the heat medium flow path. each of the plurality of heat exchangers,
an inlet pipe through which a coolant flows in and an outlet pipe through which a coolant flows out, which extend in a direction across the heat medium flow path and are spaced apart from each other;
a plurality of communicating tubes disposed between the inlet tube and the outlet tube and arranged in parallel at intervals in the transverse direction;
The slurry manufacturing apparatus according to any one of claims 1 to 3, wherein the gaps are provided between the plurality of communication pipes. each of the plurality of heat exchangers,
an inlet pipe through which a coolant flows in and an outlet pipe through which a coolant flows out, which extend in a direction across the heat medium flow path and are spaced apart from each other;
a plurality of communicating pipes arranged in a lattice between the inlet pipe and the outlet pipe;
The slurry manufacturing apparatus according to any one of claims 1 to 3, wherein the gaps are provided between the plurality of communication pipes. The slurry production apparatus according to any one of claims 1 to 5, wherein some or all of the plurality of heat exchangers have a plurality of heat transfer fins on their surfaces. A heat medium circulation circuit comprising the slurry production apparatus according to any one of claims 1 to 6, in which the heat medium is circulated. An air conditioning system comprising the heat medium circulation circuit according to claim 7.

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