JPH0743183B2 - Cold water generator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an adsorption-type cold water generator for generating cold water for air conditioning, factory processes, and the like.

(Prior art) Among various cold water generators, an absorption type refrigeration cycle using lithium bromide as an absorbent is known as a conventional representative cold water generator capable of generating cold water by utilizing waste heat. There is one that was used, in this cold water generator,
For example, a part of the waste heat of the process and the waste heat of 80 ° C or more from the cogeneration system is used as a heat source for regeneration of the regenerator to generate cold water. Conventionally, when waste heat is left over in such a cold water generator, it is discarded without being collected into the atmosphere in a cooling tower, or it is collected in the form of hot water and stored in a hot water storage tank, etc. I use it. That is, in the chilled water generator using the absorption refrigeration cycle, cold water is generated by night power for the purpose of averaging the heat storage as cold heat performed in the chilled water generator driven by an electric motor, that is, day and night. Then, the heat is not stored as cold heat such as storing the heat in the heat storage device and using it at the time of demand for cold water. In addition, such a heat storage device in an electric motor driven chilled water generator is a liquid or solid heat storage agent formed by mixing or coexisting water or ice or a chemical heat storage agent in water in a storage container. It is common to store and use the sensible heat and latent heat to store heat.

(Problems to be solved by the invention) In the absorption refrigeration cycle, the temperature required in the regenerator is 80
Relatively high temperature above ℃, generally cannot maintain high coefficient of performance unless temperature around 85 ℃ is stable and obtained continuously, and when the temperature falls below 70 ℃, absorbent crystals precipitate. Or, the efficiency is extremely reduced and the function of generating cold water cannot be fully exerted. Therefore, in the absorption refrigeration cycle, waste heat of about 50 ° C cannot be used. In addition, when the heat generation amount of waste heat fluctuates or the generation time of waste heat and the demand time of cold water do not always coincide with each other and there is often a time lag, the above-mentioned required temperature can be obtained. However, it cannot always be effectively used for generating cold water.

The use of a heat storage device is also conceivable, but in the heat storage device described above used in a cold water generator driven by an electric motor, the structure of a storage container for the heat storage agent, the structure for preventing heat loss from the container, and the inside of the container In addition to the need to devise a configuration for extracting cold heat from the heat storage agent and maintenance and management of the heat storage agent, there are drawbacks such as the fact that a water-based heat storage device cannot be installed in some places.

The present invention aims to solve the above problems by utilizing an adsorption type refrigeration cycle.

(Means for Solving the Problems) In order to solve the above problems, in the present invention, a pair of adsorbents that are alternately operated as an adsorber and a regenerator with respect to a common refrigerant condenser and refrigerant evaporator. A plurality of sets of adsorption regenerators, each of which comprises a pair of common refrigerant vapor paths between the refrigerant condenser and the refrigerant evaporator and the adsorption regenerator, and the refrigerant condenser and the refrigerant evaporator are Both of them are connected via an on-off valve, and some sets of adsorption regenerators connect each of a pair of adsorbent filling parts to both of the common refrigerant vapor paths via an on-off valve, respectively, and during normal operation. In addition to being configured as a normal adsorption regenerator to be operated, the other set of adsorption regenerators has a pair of adsorbent filling sections corresponding to a pair of refrigerant vapor paths and connected to either side via an on-off valve. hand,
Configured as an auxiliary adsorption regenerator that operates during auxiliary operation,
We propose a cold water generator in which the heat exchange section provided in each adsorbent filling section is connected to the heat source water supply path and the cooling water supply path via an on-off valve.

In the present invention, in the above-mentioned configuration, the adsorbent filling section constituting the auxiliary adsorption regenerator has a larger adsorbent filling capacity than the adsorbent filling section constituting the regular adsorption regenerator, so that the auxiliary adsorption regenerator It is proposed that the cycle time of adsorption regeneration in the above is longer than the cycle time of adsorption regeneration in the conventional adsorption regenerator.

Further, in the present invention, in the above structure, the normal adsorption regenerator is configured to perform adsorption and regeneration in a cycle time of 1 to 10 minutes, and the auxiliary adsorption regenerator is configured to perform adsorption and regeneration in a cycle time of 10 minutes to 1 hour or more. And that the adsorption regenerator utilizes waste heat of 50 ° C or higher for regeneration.

(Operation) Since the refrigerant condenser and the refrigerant evaporator are connected to both of the pair of common refrigerant vapor paths via the on-off valves, respectively, the pair of common refrigerant vapor paths are respectively connected to the refrigerant condenser and the refrigerant evaporator. You can switch the connection side. Similarly, since the pair of adsorbent filling sections of the regular adsorption regenerator are also connected to both of the pair of common refrigerant vapor paths via the on-off valves, respectively, they are connected to the common refrigerant vapor path on either side. Can be Therefore, even if the on / off valves of the refrigerant condenser, the refrigerant evaporator, and the common refrigerant vapor path are not switched, by switching the on / off valves of the adsorbent charging section and the common refrigerant vapor path, the adsorbent charging section of the regular adsorption regenerator is switched. Either side of can be made to correspond to a refrigerant condenser (refrigerant evaporator), and corresponding to this operation, the heat exchange section of each adsorbent filling section can be provided with hot water or cooling water supply path through the heat source water supply path. By supplying the cooling water that has passed through, the adsorption refrigeration cycle can be performed. Therefore, by alternately switching the operation of the opening / closing valve on the side of the regular adsorption regenerator, the regular operation can be performed and the generation of cold water can be continued.

On the other hand, since the pair of adsorbent filling sections of the auxiliary adsorption regenerator are connected to either side of the pair of common refrigerant vapor paths, respectively, in the above-described normal operation state, the refrigerant condenser has a common connection state. By opening the on-off valve of the adsorbent filling section on the side connected to the refrigerant vapor path, and supplying hot water that has passed through the heat source water supply path to the heat exchange section, this adsorbent filling section serves as a regenerator. It can be operated.

Further, in the above-mentioned normal operation state, the opening / closing valve of the adsorbent filling section on the side connected to the common refrigerant vapor path in the connected state to the refrigerant evaporator is opened, and the heat exchange section is passed through the cooling water supply path. By supplying the cooling water, the adsorbent filling section can be operated as an adsorber.

On the other hand, although the pair of adsorbent filling sections of the auxiliary adsorption regenerator cannot switch the connection state with the pair of common refrigerant vapor paths, they switch the on-off valves of the refrigerant condenser, the refrigerant evaporator and the common refrigerant vapor path. Thus, the connection state with the refrigerant condenser and the refrigerant evaporator can be switched. Therefore, the pair of adsorbent filling parts of the auxiliary adsorption regenerator are both
It can be operated as an adsorber or a regenerator as needed.

From the above, in the present invention, by operating the normal adsorption regenerator together with the common refrigerant condenser and the refrigerant evaporator to perform the normal operation of the adsorption cycle, the cold water is heated by the hot water of about 50 ° C. or more from the heat source. Can occur. Then, when the amount of heat generated by the heat source is larger than the amount of heat required to generate a predetermined amount of cold water, or when there is no demand for cold water, the adsorbent filling section of the auxiliary adsorption regenerator is operated as a regenerator. As a result, it is possible to substantially store heat as cold heat. And after playback, keep that state, when needed,
That is, when the amount of heat required to generate a predetermined amount of cold water is larger than the amount of heat generated by the heat source, it can be used as an adsorber and can be used to generate cold water. Ability increases.

From the above, the adsorbent filling section that constitutes the auxiliary adsorption regenerator has a larger adsorbent filling capacity than the adsorbent filling section that constitutes the normal adsorption regenerator, and the adsorption regeneration cycle in the auxiliary adsorption regenerator is increased. By making the time longer than the cycle time of adsorption regeneration in the regular adsorption regenerator, the heat can be efficiently used.

(Example) Next, the Example of this invention is described about figures.

In the figure, reference numeral 1 is a refrigerant condenser, 2 is a refrigerant evaporator, and these are common to a plurality of sets of adsorption regenerators described later. Reference numerals 3, 4 and 5 are adsorption regenerators composed of a pair of adsorbent-filled portions a and b which alternately operate as an adsorber and a regenerator, and a plurality of these are provided. With the configuration described later, a part of these plural sets of adsorption regenerators is configured as a regular adsorption regenerator 3 that operates during normal operation, and another adsorption regenerator that operates during auxiliary operation Configure as 4,5. The adsorbent-filled portions a and b of these adsorption regenerators are filled with a solid adsorbent such as silica gel or zeolite. The adsorbent filling parts a and b that compose the auxiliary adsorption regenerators 4 and 5 are the ordinary adsorption regenerator 3
The adsorbent filling capacity is made larger than that of the adsorbent filling sections a and b constituting the above, and the cycle time of adsorption regeneration in the auxiliary adsorption regenerators 4 and 5 is set to be smaller than the cycle time of adsorption regeneration in the regular adsorption regenerator 3. Is also configured long. For example, the normal adsorption regenerator 3 is configured to perform adsorption and regeneration with a cycle time of 1 to 10 minutes, and the auxiliary adsorption regenerators 4,5 for 10 minutes to
Adsorption and regeneration are performed in a cycle time of 1 hour or more. In the figure, the normal adsorption regenerator 3 is one set, but a plurality of sets may be constructed. Further, the auxiliary adsorption regenerators 4, 5 may be plural sets, or may be one set.

Reference numerals 6c and 6d are common refrigerant vapor paths forming a pair, and the respective refrigerant vapor paths 6c and 6d are connected to the refrigerant condenser 1 and the refrigerant evaporator 2 via the on-off valves 7c, 7d; 8c and 8d, respectively. Connected. Similarly, the adsorbent filling sections 3a and 3b of the regular adsorption regenerator 3 are also connected to both the refrigerant vapor paths 6c and 6d via the on-off valves 9ac, 9ad; 9bc and 9bd, respectively. On the other hand, the adsorbent filling sections 4a, 4b; 5a, 5b of the auxiliary adsorption regenerators 4, 5 are connected to the refrigerant vapor paths 6c, 6d via the on-off valves 10ac, 10bd; 11ac, 11bd, respectively.

Reference numeral 12 is a refrigerant tank, and the refrigerant condensed in the refrigerant condenser 1 is passed through the siphon pipe 13 and the refrigerant tank 12
It is configured to be introduced into the refrigerant evaporator 2 via the refrigerant pump 14 and the flow rate adjusting valve 15, and then introduced into the refrigerant evaporator 2.

The above refrigerant condenser 1, refrigerant evaporator 2 and adsorbent filling section a,
Heat exchange parts 17, 18, 19, 20 are provided in b, respectively, and the corresponding heat mediums are made to flow, as will be described later.

That is, reference numeral 21 is a heat source water supply path connected to an appropriate heat source (not shown) such as a waste heat recovery device, 22 is a cooling water supply path connected to a cooling water source (not shown) such as a cooling tower or a well, and the adsorption Heat exchange parts 19a, 19b; 2 provided in the agent filling parts 3a, 3b; 4a, 4b
0a and 20b are the on-off valve pairs 23 provided on the upstream side and the downstream side, respectively.
ae, 23af; 23be, 23bf; 24ae, 24af; 24be, 24bf are connected to both the heat source water supply path 21 and the cooling water supply path 22, and the cooling water supply path 22 is condensed with the refrigerant. Bowl 1
The path leading to the heat exchange section 17 is connected. On the other hand, code 25
Is a cold water supply path connected to a cold water use place (not shown) such as a heat exchanger for cooling, and a path to the heat exchange section 18 of the refrigerant evaporator 2 is connected to the cold water supply path 25. still,
In the figure, reference numeral 26 is a heat insulating member, and 27 is a refrigerant liquid.

The operation of the above configuration will be described below.

(I) Normal Operation First, as shown in FIG. 1, the normal adsorption regenerator 3 is operated by opening the hatched open / close valve and open / close valve pair and closing the unopened open / close valve and open / close valve pair. Perform regular operation. The on-off valve and the on-off valve pair of the auxiliary adsorption regenerator 4 are now closed for convenience, regardless of the hatched state.

In the above operation, the adsorbent in the adsorbent filling section 3a is heated from the heat source water supply path 21 via the on-off valve pair 23ae to the heat exchange section 19a.
It is heated by the heat source water that flows to discharge refrigerant vapor.
That is, the adsorbent filling section 3a operates as a regenerator. The refrigerant vapor discharged from the refrigerant reaches the refrigerant vapor path 6c via the on-off valve 9ac, flows through the refrigerant vapor path 6c, and flows into the refrigerant condenser 1 via the on-off valve 7c. The refrigerant vapor thus flowing into the refrigerant condenser 1 exchanges heat with the cooling water in the cooling water path 22 flowing through the heat exchange section 17 to be cooled and condensed, and then introduced into the refrigerant tank 12 via the siphon pipe 13. And is collected at the bottom. The refrigerant liquid 27 collected at the bottom of the refrigerant tank 12 is
Through the circulation pump 14 and the flow rate adjusting valve 15, the refrigerant is ejected from the refrigerant ejection portion 16 into the refrigerant evaporator 2 to be evaporated, and at this time, heat is taken from the cold water in the cold water supply path 25 flowing through the heat exchange portion 18, To cool. Then, the refrigerant vapor in the refrigerant evaporator 2 is opened and closed by an on-off valve.
From 8d, the refrigerant vapor path 6d and the on-off valve 9bd flow into the adsorbent filling section 3b where they are adsorbed by the adsorbent. That is,
The adsorbent filling section 3b operates as an adsorber, and the heat of adsorption generated during such adsorption is removed by the cooling water flowing from the cooling water supply path 22 to the heat exchange section 19b via the on-off valve pair 23bf.

In the above normal operation, when the adsorption capacity of the adsorbent filling section 3b drops below a predetermined level, the on-off valve 9 and the on-off valve pair 23 of the regular adsorption regenerator 3 are opened and closed in the opposite manner to the above. That is, the on-off valve 9 and the on-off valve pair 23 are switched so that those hatched in FIG. 1 are closed and those not hatched are opened. The open / close state of the open / close valves 7 and 8 on the side of the refrigerant condenser 1 and the refrigerant evaporator 2 remains the same, that is, those open / close valves 7 and 8 are open and those not open. Is closed.

In this state, contrary to the above, the adsorbent filling section 3b operates as a regenerator, and the refrigerant vapor discharged from the adsorbent filling section 3b reaches the refrigerant vapor path 6c through the on-off valve 9bc, and the refrigerant vapor path 6c is the same as described above. And flows into the refrigerant condenser 1 via the on-off valve 7c. Further, the adsorbent filling section 3a operates as an adsorber, and the refrigerant vapor that has reached the refrigerant vapor path 6d from the refrigerant evaporator 2 through the opening / closing valve 8d is sucked into the adsorbent filling section 3a from the opening / closing valve 9ad as described above. And is adsorbed here.

The above normal operation can be performed in the state shown in FIG. 2 by switching the on-off valves 7 and 8 on the refrigerant condenser 1 side and the refrigerant evaporator 2 side from the state shown in FIG. In FIG. 2 as well, as in FIG. 1, those hatched are open and those not hatched are closed. In the above state, the refrigerant condenser 1
Can communicate with the refrigerant vapor path 6d via the open / close valve 7d, and the refrigerant evaporator 2 can communicate with the refrigerant vapor path 6c via the open / close valve 8c to perform normal operation together with the normal adsorption regenerator 3.

As described above, with respect to the common refrigerant condenser 1 and refrigerant evaporator 2, the pair of adsorbent filling parts a,
By alternately operating each of b as a regenerator and an adsorber and performing an adsorption type refrigeration cycle, cold water can be continuously generated as in the conventional adsorption type refrigerator.
The adsorption refrigeration cycle does not have the disadvantage of absorbing the adsorbent in the absorption refrigeration cycle, the temperature required for regeneration of the adsorbent in the regenerator is relatively low, and the fluctuation of the amount of heat generated from the heat source There is little fluctuation in the ability of
Therefore, if the temperature is about 50 ° C. or higher, the waste heat that could not be used conventionally can be used for generating cold water.

(II) Normal and auxiliary (heat storage) combined operation In the above normal operation, when the amount of heat generated by the heat source is larger than the amount of heat required to generate cold water, such as when the cold water load is small, As shown in FIG. 5, the on-off valve 10 and the on-off valve pair 24 related to the auxiliary adsorption regenerator 4 are opened by opening and closing the hatched on-off valve and on-off valve pair in the figure, and closing the on-off valve and on-off valve pair which are not Auxiliary exercise is performed in combination with the regular operation described above.

Therefore, the adsorbent in the adsorbent filling section 4a of the auxiliary adsorption regenerator 4 is heated by the heat source water flowing from the heat source water supply path 21 to the heat exchanging section 20a through the on-off valve pair 24ae to release the refrigerant vapor. , The refrigerant vapor discharged from the refrigerant reaches the refrigerant vapor path 6c through the on-off valve 10ac, flows along with the refrigerant vapor discharged from the regular adsorption regenerator 3 through the refrigerant vapor path 6c, and opens and closes the on-off valve.
It flows into the refrigerant condenser 1 via 7c. When the regeneration of the adsorbent-filled portion 4a of the auxiliary adsorption regenerator 4 is completed in this way, the on-off valve 10ac and the on-off valve pair 24ae are closed, and then the other auxiliary adsorption regenerator 5 is operated in the same manner as above. The adsorbent filling section 5a is regenerated. Further, when performing the normal operation with the open / close state of the open / close valves 7 and 8 shown in FIG. 2, as shown in FIG.
By opening bd and the on-off valve pair 24be, another adsorbent filling section 4b of the auxiliary adsorption regenerator 4 can be regenerated.

As described above, when the amount of heat generated by the heat source is larger than the amount of heat required to generate cold water, such as when the load of cold water is small, the adsorbent filling sections 3a, 3 of the regular adsorption regenerator 3 are
Since the regeneration of b is completed in a short time, the amount of heat generated will be surplus if it is left as it is, but as described above, in the present invention, in such a state, the surplus heat is the auxiliary adsorption regenerator 4 Since the adsorbents 5 and 5 are used to regenerate the adsorbent-filled portions a and b, their effective use can be achieved. As described above, the auxiliary adsorption regenerators 4 and 5 that substantially store the excess heat amount have a larger adsorbent filling amount in the adsorbent filling portion than that of the regular adsorption regenerator 3, thereby increasing the amount of adsorbent. It is possible to store heat, and in such a configuration, the cycle time of the adsorption regeneration is longer than that of the regular adsorption regenerator 3. In addition, the heat storage amount can be increased by providing a plurality of auxiliary adsorption regenerators 4 and 5.

(III) Auxiliary (heat storage) operation Next, at the time when there is no demand for cold water even though heat that can be used by the heat source is generated, the on-off valve 9 and the on-off valve pair 23 of the regular adsorption regenerator 3 are operated. And the opening / closing valves 7 and 8 of the refrigerant condenser 1 and the refrigerant evaporator 2, the opening / closing valve 10 and the opening / closing valve pair 24 of the auxiliary adsorption regenerator 4 are controlled in the same manner as the operation of (II) described above. By switching the open / closed state and performing the auxiliary operation, it is possible to regenerate both the adsorbent-filled parts a and b of the auxiliary adsorption regenerator 4, and after the regeneration, the on-off valve and the on-off valve pair are closed and the next time. Wait until the operation as the adsorber. In this way, the heat generated in the heat source at the time when there is no demand for cold water is also stored in the form of regeneration of the adsorbent-filled portions a and b in the auxiliary adsorption regenerators 4 and 5, and can be effectively used for generation of cold water.

(IV) Normal and Auxiliary (Cold Water Generation) Operation Next, in the above-mentioned normal operation shown in FIG. 1, the cold water load is large and the amount of heat required to generate cold water is greater than the amount of heat generated by the heat source. When there are many, as shown in FIG. 4, the on-off valve 10 and the on-off valve pair 24 of the auxiliary adsorption regenerator 4 are
In the figure, the hatched on-off valve and the on-off valve pair are opened, and the auxiliary operation is performed in combination with the normal operation described above.

Then, it is evaporated in the refrigerant evaporator 2 and the refrigerant vapor path
A part of the refrigerant vapor flowing through 6d reaches the adsorbent filling section 3b of the regular adsorption regenerator 3 through the on-off valve 9bd, and is adsorbed by the adsorbent there, while the rest passes through the on-off valve 10bd and enters the auxiliary adsorption regenerator 4. It reaches the adsorbent filling section 4b where it is adsorbed by the adsorbent regenerated by the previous operation. By such operations of the auxiliary adsorption regenerators 4 and 5, the adsorbed amount of the refrigerant vapor and hence the evaporated amount of the refrigerant in the refrigerant evaporator 2 can be increased, so that the cold water generation capacity is increased, and thus the increased cold water demand. Can be dealt with.

(Effects of the invention) As described above, the cold water generator of the present invention generates cold water by utilizing the adsorption type refrigeration cycle, so that there is no inconvenience such as precipitation of the absorbent in the absorption type refrigeration cycle.
If the temperature is about ℃ or more, it is effective in that even waste heat whose amount of generated heat fluctuates can be effectively used for generating cold water. Further, the cold water generating device of the present invention is provided with an auxiliary adsorption regenerator together with a regular adsorption regenerator, and because it substantially stores heat as cold heat in the form of regeneration of the adsorbent filling section of the auxiliary adsorption regenerator, Even when excess heat is generated due to a small cold water load at the time of demand for water, or when there is a time lag between the time of heat generation and the time of demand for cold water, these heat quantities are not wasted and There is an effect that it can be effectively used for generation of cold water at the time of occurrence of a large cold water load that cannot be handled by the adsorption regenerator alone. Thus, the present invention widely uses the waste heat of a relatively low temperature in the waste heat of the process and the waste heat of the cogeneration system, which have not been effectively used in the past, for supplying cold water for air conditioning and industrial processes. The effect is that you can. The components of the adsorption refrigeration cycle are vibration-free and noise-free, and adsorbents such as silica gel and zeolite are also non-toxic.
Since it is odorless, non-polluting, and non-corrosive, it is safe without causing environmental pollution even in the event of a disaster, etc., and has the effect of making maintenance and management very easy.

[Brief description of drawings]

FIG. 1 is a system explanatory diagram showing the overall configuration and operation of the present invention, and FIGS. 2, 3, and 4 are system explanatory diagrams of the essential parts showing the operation. Reference numeral 1 ... Refrigerant condenser, 2 ... Refrigerant evaporator, 3 ... Regular adsorption regenerator, 4,5 ... Auxiliary adsorption regenerator, 6 ... Common refrigerant vapor path, 7,8,9,10,11 …… Open / close valve, 12 …… Refrigerant tank, 13 …… Siphon tube, 14 …… Refrigerant circulation pump, 15…
… Refrigerant flow rate control valve, 16 …… Refrigerant spouting part, 17,18,19,20…
… Heat exchange part, 21 …… Heat source water supply path, 22 …… Cooling water supply path, 23,24 …… Open / close valve pair, 25 …… Cold water supply path, 26…
… Insulation material, 27 …… Refrigerant liquid, a, b …… Adsorbent filling part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inoue Nobumi Ino 1-5-15-204 Shimizuguchi, Usui-cho, Inba-gun, Chiba Prefecture (72) Hideji Yanagi 3600-80, Nakane, Katsuta-shi, Ibaraki (56) References Special Kai 62-175563 (JP, A) JP 64-58966 (JP, A) Patent 115887 (JP, C2)

Claims (5)

[Claims] 1. A common refrigerant condenser and refrigerant evaporator,
Providing a plurality of sets of adsorption regenerators each consisting of a pair of adsorbent filling sections that alternately operate as an adsorber and a regenerator, a refrigerant condenser,
A pair of common refrigerant vapor paths are formed between the refrigerant evaporator and the adsorption regenerator, and the refrigerant condenser and the refrigerant evaporator are connected to both of the common refrigerant vapor paths through the on-off valves, respectively, and a part of the set of The adsorption regenerator is configured as a normal adsorption regenerator that is operated during normal operation by connecting each of the pair of adsorbent filling sections to both of the common refrigerant vapor paths via open / close valves, and also adsorbing other groups of adsorption. The regenerator is configured as an auxiliary adsorption regenerator that operates during auxiliary operation by connecting a pair of adsorbent filling sections to a pair of refrigerant vapor paths and connecting them to either side via an on-off valve. The heat exchange part provided in the adsorbent filling part of is connected to the heat source water supply route and the cooling water supply route via an on-off valve. 2. The adsorbent filling section of the auxiliary adsorption regenerator has a larger adsorbent filling capacity than that of the adsorbent filling section of the normal adsorption regenerator, and the adsorption regeneration cycle in the auxiliary adsorption regenerator is increased. The chilled water generator according to claim 1, wherein the time is configured to be longer than the cycle time of adsorption regeneration in the regular adsorption regenerator. 3. The chilled water generator according to claim 2, wherein the regular adsorption regenerator is configured to perform adsorption and regeneration with a cycle time of 1 to 10 minutes. 4. The chilled water generator according to claim 2, wherein the auxiliary adsorption regenerator is configured to perform adsorption and regeneration with a cycle time of 10 minutes to 1 hour or longer. 5. The cold water generator according to claim 1, wherein the adsorption regenerator regenerates using waste heat of 50 ° C. or higher.