JPH03294765A - Co-generation device for cold water production and subway air cooling device used the same - Google Patents

Abstract

PURPOSE:To produce cold water efficiently using waste heat and prevent environmental pollution by supplying waste heat recovery hot water passing through the waste heat recovery part of an internal combustion engine and the condenser of a compression type freezer, to the adsorbent filling part as a recovery pot which is separated into one part of a multitude unit of adsorption regeneration pots in an adsorption type freezer for normal operation adsorption regeneration pots, and the other part for auxiliary adsorption regeneration pots. CONSTITUTION:An adsorption type freezer A has a multitude of adsorption regeneration pots 20 consisting of a pair of adsorbent filling parts and one is a normal operation adsorption regeneration pot U and the other is an auxiliary adsorption regeneration pot V. The waste heat from an internal combustion engine 1 to operate a compression type freezer C passes a waste heat recovery part 6 and is recovered by the hot water in a waste heat recovery hot water system H. Also, the heat from a condenser 8 in the compression type freezer C is recovered by the hot water in the waste heat recovery system H and is supplied to the adsorption type freezer A, flows in the adsorbent filling part operating as a regeneration pot in the adsorption regeneration pots U and V, and is utilized for adsorbent. In the case the waste heat generated in the internal combustion engine 1 and that in the condenser 8 in the compression type freezer C is larger than the heat necessary for producing cool water in normal operation, the auxiliary adsorption regeneration pot V is used together.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a cogeneration system for generating cold water and a subway cooling system using the same.

(Conventional technology) Conventionally, air conditioning in subway station buildings and roads has been done by installing cold water generators that use motor-driven compression refrigerators, or by receiving cold water from nearby heat supply plants. The installed capacity corresponds to the maximum load from the beginning of the plum season to the summer season.

Furthermore, recently, as an example of a so-called cozi energy device, a device that generates cold water by using waste heat from an internal combustion engine for driving a generator as a heat source for regeneration of an absorption refrigerator is being used.

(Problem to be solved by the invention) As mentioned above, in conventional subway cooling systems, the equipment capacity is simply set to correspond to the maximum load from the beginning of the plum season to the summer period, and therefore the equipment capacity is The number of operating days per year is small, and the equipment is not used effectively. Furthermore, efficiency is almost ignored, the system is not designed to utilize heat effectively, and it cannot cope with long-term increases in cooling load.

It is conceivable to use the above-mentioned cold water generation device using the cozi energy system in the cooling system of such subways, but the absorption refrigeration cycle requires a temperature of 80°C or higher in the regenerator, which is relatively low. Generally speaking, unless a stable and continuous temperature of around 85°C can be obtained, it is not possible to maintain a high coefficient of performance, and if the temperature drops below 70°C, absorbent crystals may precipitate and the efficiency may become extremely low. It is not possible to fully demonstrate the function of generating cold water, and it is not possible to effectively utilize the surplus heat generated when the load of cold water is small.

The present invention aims to solve the above-mentioned conventional problems by rationally combining a cozi energy system, a compression refrigerator, and an adsorption refrigerator.

(Means for solving the problem) To explain the means for solving the above problem, first,
The cogeneration system for generating cold water of the present invention includes a generator driven by an internal combustion engine, a compression refrigerator, and an adsorption refrigerator as components, and the adsorption refrigerator has a common condenser, The evaporator is configured with a plurality of sets of adsorption regenerators each consisting of a pair of adsorbent filling sections that operate alternately as an adsorber and a regenerator, and some of these sets of adsorption regenerators are operated during regular operation. The adsorption regenerator is configured as a regular adsorption regenerator that is operated during auxiliary operation, and another adsorption regenerator is configured as an auxiliary adsorption regenerator that is operated during auxiliary operation. The system is configured to supply hot water from the waste heat recovery hot water system that passes through the recovery section and the condenser of the compression refrigerator.

In the above configuration, the cycle time of adsorption regeneration in the auxiliary adsorption regenerator can be made longer than the cycle time of adsorption regeneration in the regular adsorption regenerator.

Further, the compressor has a configuration in which its drive shaft is driven by an internal combustion engine for driving a generator, and the drive shaft and the internal combustion engine can be configured to be disconnectable. Further, a configuration may be provided in which a plurality of adsorption refrigerators are provided.

Furthermore, in the present invention, in the above configuration, the adsorption refrigerator is installed in a space under the platform of a subway station building or in a dead space of a subway tunnel to constitute a subway cooling system.

(Function) During the cooling period, the internal combustion engine drives the generator to generate electricity to meet the required electricity demand, and at the same time, the compressor is driven to operate the compression refrigerator, which cools the evaporator. Cold water is generated and used for air conditioning. The waste heat generated in the internal combustion engine and the waste heat generated in the condenser of the compression refrigerator due to the above operation are recovered as hot water by the waste heat recovery hot water system that passes through the condenser and the waste heat recovery section of the internal combustion engine. Then, this hot water is led to the regenerator of the adsorption refrigerator. In an adsorption refrigerating machine, a normal operation is first performed in which a common adsorption regenerator is operated together with a common condenser and evaporator to perform an adsorption refrigeration cycle. That is, in a regular adsorption regenerator, hot water from the waste heat recovery hot water system is supplied to one adsorbent-filled part to operate it as a regenerator, and the other adsorbent-filled part is operated as an adsorber. This allows cold water to be generated in the evaporator. If the adsorption capacity of the adsorbent filling section on the other side decreases below a predetermined level, the above-mentioned operation is switched and the adsorbent filling section on the other side is replaced with the adsorbent.
The generation of cold water can be continued by operating the adsorbent filling section on the other side as a regenerator, and thereafter switching the above operations alternately in the same manner. The cold water generated in the evaporator can be used for cooling together with the cold water generated in the evaporator of the compression type refrigerator, and thus the waste heat generated in the internal combustion engine and the condenser of the compression type refrigerator can be The waste heat generated can be used to generate cold water.

In this way, the amount of cold water to be generated during normal operation of the adsorption refrigerator is small, and the amount of waste heat generated in the internal combustion engine and the condenser of the compression refrigerator is smaller than the amount of heat required to generate this cold water. If the amount of heat generated by the waste heat is larger than that of the waste heat, in an adsorption refrigerator, a portion of the hot water from the waste heat recovery hot water system is supplied to the adsorbent filling section of the auxiliary adsorption regenerator. It is also used with auxiliary operation that operates as a regenerator.

In this way, the surplus heat is used to regenerate the adsorbent filling part of the auxiliary adsorption regenerator, and after regeneration, the state is maintained and the adsorber is closed and operated when necessary, as described later, to generate cold water. Therefore, it is possible to essentially store heat as cold heat. Furthermore, if the chilled water load is small and the necessary amount of chilled water can be supplied only by the compression chiller, the adsorption chiller will not generate chilled water during normal operation as described above, but will only regenerate the adsorbent as described above. , After regeneration, it is put on standby until the next operation.

Next, if the chilled water load increases and the necessary amount of chilled water cannot be obtained by normal operation of the compression chiller and adsorption chiller, the adsorption chiller may be regenerated in advance as described above in addition to normal operation. An auxiliary operation is also used in which refrigerant vapor is adsorbed by the adsorbent in the adsorbent filling section of the auxiliary adsorption regenerator. Therefore, the amount of evaporation of refrigerant in the evaporator can be increased,
By increasing the cold water generation capacity of the adsorption refrigerator, the cold water generation capacity of the entire apparatus can be increased, and an increase in the cold water load can be coped with. The chilled water generation capacity of an adsorption chiller can be selected by taking into account conditions such as the required chilled water load and future increase in chilled water load, and the capacity can be easily increased by installing multiple auxiliary adsorption regenerators. Even in this case, the condenser and evaporator and the components for operating them are common, so the cost and space will not increase. In addition, the auxiliary adsorption regenerator can set its adsorption regeneration cycle time appropriately.
For example, by configuring the cycle time to be longer than the cycle time of adsorption regeneration in a conventional adsorption regenerator, the amount of heat storage and the amount of adsorption described above can be easily increased.

Adsorption chillers do not have the disadvantage of absorbent precipitation that occurs in absorption chillers, and the temperature of the heat source required to regenerate the adsorbent in the regenerator is relatively low, at 50°C or higher. , the capacity fluctuates little in response to fluctuations in the heat amount of the heat source, and the heat can be stored in the form of regenerating the adsorbent in the adsorption regenerator of the adsorption refrigerator, so there is no time lag. Also, the heat can be effectively used to generate cold water, and thus the waste heat generated in the internal combustion engine and the condenser of the compression refrigerator can be effectively used.

In addition, the adsorbents used in adsorption refrigerators, such as silica gel and zealite, do not change in volume even during adsorption reactions, are non-toxic, and are
It is odorless and non-corrosive, and is easy to maintain and manage even after long-term use, making it easy to install adsorption chillers in the space under the platform of a subway station building or in the dead space of a subway tunnel. Therefore, a safe cooling system for subways can be constructed.

(Example) Next, an example in which the cozi energy system of the present invention is applied to a subway cooling system will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates an internal combustion engine 1 such as a gas engine.
The generator 2 is driven by the internal combustion engine l. This internal combustion engine l has a jacket cooler 3
and an exhaust gas heat exchanger 5 provided in the exhaust gas path 4.

The symbol C indicates a compression type refrigerator, and this compression type refrigerator C has a compressor 7, a condenser 8, an expansion valve 9, and an evaporator 10 as components. This compressor 7 is connected to the drive shaft 1
1 is configured to be driven by the internal combustion engine 1, and the drive shaft 11 and the output shaft 12 of the internal combustion engine 1 are connected to each other by a clutch 13.
The configuration is such that the connection can be made intermittently via the . In the illustrated example, the drive shaft 11 is connected to the output shaft 12 via the rotating shaft 14 of the generator 2, but it can also be connected directly. Also, this compressor 7
The drive shaft 11 is configured to be driven by the output J-shaft 12 of the internal combustion engine 1, or may be configured to be driven by an electric motor depending on the case. The condenser 8 is provided with a heat exchange section 15 connected to a waste heat recovery hot water system H described later, and a heat exchange section 16 of a cooling water path Ra connected to a cooling tower 17a.

Further, the waste heat recovery section 6 has a hot water path that passes through the jacket cooler 3 and the exhaust gas heat exchanger 5 in sequence, and this path forms a waste heat recovery hot water system H.

Reference numeral A indicates an adsorption refrigerator, and an appropriate number of adsorption refrigerators A are installed in the space below the platform PL of the subway station building. This adsorption refrigerator A has a common condenser 18 and an evaporator 19, and a plurality of sets of adsorption regenerators 20 each consisting of a pair of adsorbent filling parts a and b that are operated alternately as adsorbers and regenerators. It is composed of Some of these plurality of adsorption regenerators 20 are configured as regular adsorption regenerators U that are operated during regular operation, and other adsorption regenerators are configured as auxiliary adsorption regenerators V that are operated during auxiliary operation. are doing. The adsorbent filling parts a and b of these adsorption regenerators 20 are filled with a solid adsorbent such as silica gel or zeolite.

The adsorbent filling part that constitutes the auxiliary adsorption regenerator V is
By making the adsorbent filling capacity larger than that of the adsorbent filling parts a and b that constitute the regular adsorption regenerator U, the adsorption regeneration cycle time in the auxiliary adsorption regenerator The cycle time is longer than the adsorption regeneration cycle time. For example, the regular adsorption regenerator U is configured to adsorb and regenerate with a cycle time of 1 to 10 minutes, and the auxiliary adsorption regenerator V adsorbs and regenerates with a cycle time of 10 minutes to over 1 hour.
It is configured to perform playback. In the figure, only one set of adsorption regenerators U for normal use is shown, but a plurality of sets can be constructed. Further, the auxiliary adsorption regenerators V may be provided in a plurality of sets as shown in the figure, or may be in - sets.

Reference numerals 21 and 22 indicate a common refrigerant vapor path, and the condenser 18 and evaporator 19 are selectively connected to the respective refrigerant vapor paths 21 and 22 via a pair of on-off valves 23 and 24, respectively. There is. In addition, the adsorbent filling parts Ua and Ub of the regular adsorption regenerator U are configured to be selectively connected to both of the refrigerant vapor paths 21 and 22 via a pair of on-off valves 25 and 26, respectively, and the auxiliary adsorption and regeneration Adsorbent filling part Va of container ■
.

Vb is connected to the refrigerant vapor path 21.vb via on-off valves 27.28.
22, respectively. Reference numeral 29 denotes a refrigerant tank, and the refrigerant condensed in the condenser 18 is introduced into the refrigerant tank 29 through the siphon pipe 3o and stored therein, and is then discharged from the refrigerant injection section 33 through a pump 31 and a flow rate adjustment valve 32. It is configured to be introduced into the evaporator 19. The above condenser 18, evaporator 19 and adsorbent filling part a
.

2b are provided with heat exchange sections 34, 35, 36, and 37, respectively.

The heat exchange section 34 is connected to the cooling water path R1, and the heat exchange section 35 is connected to the cold water path wb connected to the cold water system W.
6a, 36b; 37a, 37b are two pairs of on-off valves 3
8a, 38b; 39a, 39b are configured to selectively connect to the cooling water route R and the route constituting the waste heat recovery hot water system H.

The cold water path wb is connected in parallel with the cold water path Wa passing through the heat exchange section 40 of the evaporator 10 of the compression refrigerator C to constitute a cold water system W. An air conditioning heat exchange section 41 is provided. On the other hand, the cooling water path R
is a route R that uses water leakage at a suitable location on subway Hidden Road T as a cooling water source.
b and a path Rc that connects to a cooling tower 17b installed at an appropriate location. In addition, in the figure, p is a pump, f is a fan, ■ is an on-off valve, 42 is a subway car, 43 is a damper, 4
4 represents a heat insulating member.

In the above configuration, during the cooling period, the clutch 13 is engaged to operate the internal combustion engine 1, drive the generator 2, and drive the compressor 7 to operate the compression refrigerator C. The electricity generated by generator 2 is used for ventilation fans in the station building and tunnel T,
Used as a power source for auxiliary equipment such as drainage pumps. In addition, the cold water generated in the evaporator 10 by the operation of the compression refrigerator C passes through the cold water path Wa to the heat exchanger 41 of the cold water system W.
It is then placed in the air conditioner. On the other hand, waste heat generated by the operation of the internal combustion engine 1 is recovered into hot water of a waste heat recovery hot water system H via a path passing through a waste heat recovery section 6 consisting of a jacket heat exchanger 3 and an exhaust gas heat exchanger 5, Also, compression type refrigerator C
Due to the operation of , the heat generated in the condenser 8 is also transferred to the condenser 8.
The waste heat recovery hot water system H
collected in warm water. The hot water from the waste heat recovery hot water system H is then supplied to the adsorption refrigerator A. In addition, the heat exchange section 15
If the heat generated in the condenser 8 cannot be sufficiently removed by hot water flowing through the cooling tower 17a, the cooling path Ra to the cooling tower 17a may be operated as necessary to prevent condensation that inhibits the operation of the compression refrigerator C. Heat removal can be performed.

As mentioned above, the hot water from the waste heat recovery hot water system H reaches the adsorption refrigerator A, and in the adsorption regenerators U and V, it flows through the adsorbent filling section that operates as a regenerator to regenerate the adsorbent. Served. First, as shown in Fig. 2, the adsorption refrigerating machine A opens the on-off valves and on-off valve pairs marked with hatching, and closes the on-off valves and on-off valve pairs that are not hatched. The system is in a state where regular operation is performed with only the Note that the on-off valve and the on-off valve pair regarding the auxiliary adsorption regenerator V are both closed for the sake of convenience, regardless of the hatching state.

Thus, the hot water of the waste heat recovery hot water system H flows through the heat exchange section 36a of the adsorbent filling section Ua, heats the adsorbent, releases the adsorbed refrigerant vapor, and regenerates the adsorbent. The released refrigerant vapor is introduced from the refrigerant vapor path 21 via the on-off valve 25 into the condenser 18 via the on-off valve 24, and is then introduced into the condenser 18 via the on-off valve 24.
The refrigerant is cooled and liquefied by the cooling water flowing through the refrigerant liquid tank 29 through the siphon pipe 30. Next, the refrigerant is introduced into the evaporator 19 from the refrigerant jet section 33 through the pump 31 and the flow rate adjustment valve 32, and is evaporated.
Heat is removed from the cold water in the cold water path wb flowing through the cold water path wb, and the water is cooled. And the cold water route cooled like this lol
The cold water b reaches the heat exchanger 41 of the cold water system W together with the cold water generated in the evaporator 10 of the compression refrigerator C,
Served for cooling. On the other hand, the refrigerant vapor in the evaporator 19 passes from the on-off valve 23 through the refrigerant vapor path 22, and from the on-off valve 26 to another adsorbent filling section Ub, where it is adsorbed by the adsorbent. The adsorption heat generated during such adsorption is transferred to the heat exchange section 36.
It is removed by the cooling water in the cooling water path R flowing through the cooling water path R, that is, the cooling water from the subway leakage or the cooling water from the cooling tower 17b. These cooling waters may be appropriately selected depending on the operating conditions, or may be used simultaneously. If the adsorption capacity of the adsorbent filling part ub on one side decreases below a predetermined level due to such operation, the on-off valve and the on-off valve pair, which are hatched in Fig. 2 in the opposite manner to the above, are closed. , by operating the adsorbent filling part Ua, which had been operating as a regenerator, as an adsorber, and the adsorbent filling part Ub, which had been operating as an adsorber, as a regenerator. can continue to occur.

For the above regular operation, the on-off valve should be set to the 3rd position, contrary to the state shown in Figure 2.
It is also possible to switch to the state shown in the figure. Furthermore, the third
Similarly to Figure 2, the figures with hatching are open, and those without hatching are closed. In the above state, the condenser 18 is connected to the refrigerant vapor path 22 via the on-off valve 24.
The evaporator 19 also communicates with the refrigerant vapor path 21 via the on-off valve 23, and performs normal operation together with the normal adsorption regenerator U.

In this way, the amount of cold water to be generated during regular operation of the adsorption refrigerator C is small, and the amount of waste heat generated in the internal combustion engine 1 and the compression refrigerator C are greater than the amount of heat required to generate this cold water. If the amount of waste heat generated in the condenser 8 is larger than that of the waste heat recovery system H, in the adsorption refrigerator A, the waste heat recovery hot water system H is An auxiliary operation is also used in which a portion of hot water is supplied and used as a regenerator. That is, the on-off valves 27, 28 and the on-off valve pair 39a, 39b regarding the auxiliary adsorption regenerator V are the second
In the figure, the hatched on-off valves and on-off valve pairs are open, and the on-off valves and on-off valve pairs that are not hatched are closed.
Auxiliary operation is performed in conjunction with the above-mentioned regular operation.

Thus, the adsorbent in the adsorbent filling section Va of the auxiliary adsorption regenerator V is heated by the hot water flowing from the waste heat recovery hot water system H to the heat exchange section 37a via the on-off valve pair 39a, and releases refrigerant vapor. The refrigerant vapor released from here reaches the refrigerant vapor path 21 via the on-off valve 27, flows through this refrigerant vapor path 21 together with the refrigerant vapor released from the regular adsorption regenerator U, passes through the on-off valve 24, and enters the condenser I8. Inflow. When the regeneration of the adsorbent filling part Va of the auxiliary adsorption regenerator V is completed in this way, the on-off valve 27 and the on-off valve pair 39a are closed, and then in the same manner as above, the adsorbent in the other auxiliary adsorption regenerator V is Regenerate the filled part. Further, when performing regular operation in the state shown in FIG. 3, as shown by hatching in FIG. can be played.

As explained above, when the chilled water load is small, the waste heat recovery hot water system H
If the amount of heat is larger than the amount of heat generated by As described above, in the present invention, in such a state, the surplus heat is transferred to the adsorbent filling section Va of the auxiliary adsorption regenerator V,
Since it is used for reproducing Vb, it can be used effectively.

The auxiliary adsorption regenerator V, which stores surplus heat in this way, has a larger amount of adsorbent in the adsorbent filling section than that of the regular adsorption regenerator U. Heat storage can be provided, and in such a configuration the cycle time of adsorption regeneration is longer than that of the conventional adsorption regenerator U. In addition, the amount of heat storage can be increased by providing a plurality of auxiliary adsorption regenerators V. Furthermore, if the chilled water load is small and the necessary amount of chilled water can be supplied only by the compression chiller C, the adsorption chiller A will not generate chilled water during normal operation as described above, and will only use the adsorbent as described above. It performs regeneration, and after regeneration, it waits until the next operation.

Next, if the chilled water load increases and the required amount of chilled water cannot be obtained by normal operation of compression chiller C and adsorption chiller A, adsorption chiller A may be operated as described above in addition to normal operation. An auxiliary operation is also used in which the refrigerant vapor is adsorbed by the adsorbent in the adsorbent filling parts Va and Vb of the auxiliary adsorption regenerator (2), which has been regenerated in advance.

That is, as shown in FIG. 5, the on-off valve and the on-off valve pair of the auxiliary adsorption regenerator V are opened during the auxiliary operation in conjunction with the above-mentioned normal operation, with the on-off valve and the on-off valve pair indicated by hatching in the figure opened. I do.

The refrigerant vapor is evaporated in the evaporator 19, and the refrigerant vapor path 22
A part of the refrigerant vapor flowing through the on-off valve 26 reaches the adsorbent filling part Ub of the regular adsorption regenerator U, where it is adsorbed by the adsorbent, and the rest passes through the on-off valve 28 and reaches the adsorbent filling part Ub of the auxiliary adsorption regenerator V. It reaches the adsorbent filling section vb, where it is adsorbed by the adsorbent that has been regenerated from the previous operation. By operating the auxiliary adsorption regenerator V, it is possible to increase the amount of refrigerant vapor adsorbed and, therefore, the amount of evaporation of the refrigerant in the evaporator 19. Therefore, by increasing the cold water generation capacity of the adsorption refrigerator A, the entire system is reduced. As a result, it is possible to increase the chilled water generation capacity of the system, making it possible to cope with an increase in chilled water load. The chilled water generation capacity of an adsorption chiller can be selected by taking into account conditions such as the required chilled water load and future increase in chilled water load, and the capacity can be easily increased by installing multiple auxiliary adsorption regenerators. Even in this case, the condenser 18 and evaporator 19 and the components for operating them are common, so the cost and space will not increase. In addition, the auxiliary adsorption regenerator V is
The adsorption regeneration cycle time can be appropriately set, for example, by configuring the adsorption regeneration cycle time to be longer than the adsorption regeneration cycle time in the regular adsorption regenerator U, thereby easily increasing the aforementioned heat storage amount and adsorption amount. Can be done.

Next, when air conditioning is not required, such as during winter, mid-season, or at night during the cooling season, the internal combustion engine 1 is operated with the clutch 13 disengaged, and the compression refrigerator C is operated. It does not operate, and only the generator 2 is driven to generate electricity. The electric power generated by generator 2 is used in the station building and tunnel T as described above.
Used as a power source for auxiliary equipment such as ventilation fans and drainage pumps.

In addition, the waste heat generated by such operation is exclusively used for regenerating the adsorbent in the adsorbent filling section of the regular adsorption regenerator U and the auxiliary adsorption regenerator V of the adsorption chiller A, or for heat storage in the soil, as described above. Run the air conditioner to remove it.

It goes without saying that the adsorption refrigerator A can be controlled to perform cooling operation by itself even during the cooling period depending on the case.

As mentioned above, the adsorption refrigerator A does not have the disadvantages of absorption refrigerating machines such as precipitation of absorbent, and in addition to the fact that the temperature of the heat source required for regenerating the adsorbent in the regenerator is low, There is little variation in capacity in response to changes in the amount of heat from the heat source, and the amount of heat is reduced by the regular use of the adsorption refrigerator A and the auxiliary adsorption regenerator U.
Since heat can be stored in the form of regeneration of the adsorbent in V, the heat can be effectively used for cold water generation even if there is a time lag, and thus the condenser of the internal combustion engine 1 and the compression refrigerator C 8. The waste heat generated can be effectively utilized. In addition, the adsorbents used in adsorption refrigerator A, such as silica gel and zealite, do not change in volume even during adsorption reactions.
It is non-toxic, odorless, and non-corrosive, and is easy to maintain and manage even after long-term use. Therefore, the adsorption chiller A can be used in spaces under the platforms of subway station buildings, dead spaces in subway tunnels, etc. By installing the cooling system in the subway, it is possible to easily construct a cooling system for subways that is safe even in the unlikely event of damage. In addition to being applied to subway cooling systems as described above, the present invention can also be used as a cogeneration system for generating cold water in underground malls and general buildings, thereby making it possible to save energy. .

(Effects of the Invention) As described above, the present invention generates cold water by rationally combining a cozi energy device, a compression type refrigerator, and an adsorption type refrigerator, so that the present invention generates cold water by rationally combining a cozi energy device, a compression type refrigerator, and an adsorption type refrigerator. There is no inconvenience such as precipitation of absorbent, and even waste heat whose generated heat fluctuates at temperatures above 50°C can be effectively used to generate cold water.
Therefore, there is an effect that cold water can be efficiently generated by effectively utilizing the waste heat generated during operation of the internal combustion engine of the cozi energy system. In particular, in the present invention,
Since heat can be stored in the form of regenerating the adsorbent in an adsorption chiller, it is possible to store surplus heat when the chilled water load is small at the point of demand for chilled water, or when there is surplus heat between the point of heat generation and the point of demand for chilled water. Even if there is a time lag, this heat quantity is not wasted and can be used effectively to generate cold water at the time of occurrence of a large cold water load that cannot be handled by compression chillers alone. be. and,
The adsorption refrigerating machine applied to the present invention has a common condenser and an evaporator, and a plurality of sets of adsorption regenerators each consisting of a pair of adsorbent-filled parts that operate alternately as an adsorber and a regenerator. Some of these adsorption regenerators are configured as regular adsorption regenerators that are operated during normal operation, and other adsorption regenerators are configured as auxiliary adsorption regenerators that are operated during auxiliary operation. By installing multiple auxiliary adsorption regenerators and setting the adsorption regeneration cycle time appropriately, you can easily adjust the chilled water generation capacity by taking into consideration conditions such as the required chilled water load and future chilled water load increase. J can be set, and even when setting a large capacity, the condenser and evaporator and the components for operating them are common, so there is an effect that cost and space do not increase. In this way, the present invention can be applied not only to cooling systems in subways, but also as a cogeneration system for generating cold water in underground malls and general buildings. It is vibration-free, noise-free, and the adsorbents such as silica gel and zeolite are non-toxic, odorless, pollution-free, and non-corrosive, so it is safe and does not cause environmental pollution even in the event of a disaster. It also has the effect of being extremely easy to maintain and manage.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram showing an embodiment of the overall configuration in which the present invention is applied to a subway cooling system, and FIG. 2 is a system diagram showing the overall configuration and operation of an adsorption refrigerator to which the present invention is applied. The explanatory diagrams, Fig. 3, Fig. 4, and Fig. 5 are the second diagram showing the operation.
It is a system explanatory diagram of the main part of the structure of a figure. Code A: Adsorption refrigerator, C: Compression refrigerator, H
...Waste heat recovery hot water system, R (Ra, Rb, Rc)...
・Cooling water route, W...Cold water system, Wa, Wb...Cold water route, U...Common adsorption regenerator, ■...Auxiliary adsorption regenerator, 1...Internal combustion engine, 2... Generator, 3... Jacket cooler, 4... Exhaust gas path, 5... Exhaust gas heat exchanger, 6... Waste heat recovery section, 7... Compressor, 8
．． 18... Condenser, 9... Expansion valve, 10.19...
Evaporator, 11... Drive shaft, 12... Output shaft, 13...
・Clutch, 14...Rotating shaft, 15.16.34.3
5.36 a, 36 b, 37a, 37 b,
40-heat exchange section, 17a, 17b-cooling tower, 20...
・Adsorption regenerator, 21.22... Refrigerant vapor path, 29...
・Refrigerant liquid tank, 30...siphon tube, 31...
Pump, 32...Flow rate adjustment valve, 33...Refrigerant injection part, 23, 24, 25, 26, 27.28... Opening/closing valve,
38a, 38b, 39a, 39b - on-off valve pair, 41...
・Heat exchange unit for air conditioning, 42...Subway car, 43...
Damper, 44 river insulation member, PL...platform, T...platform, p...pump, f...fan, ■
...Opening/closing valve.

Claims (5)

[Claims] (1) The components are a generator driven by an internal combustion engine, a compression refrigerator, and an adsorption refrigerator. and a plurality of sets of adsorption regenerators each consisting of a pair of adsorbent filling sections operated as a regenerator, and a part of these plurality of sets of adsorption regenerators is configured as a regular adsorption regenerator operated during regular operation. At the same time, another adsorption regenerator is configured as an auxiliary adsorption regenerator operated during auxiliary operation, and the waste heat recovery section of the internal combustion engine and the condensation of the compression refrigerator are connected to the adsorbent filling section operated as a regenerator. A cozi energy generation device for generating cold water, characterized in that it is configured to supply hot water from a waste heat recovery hot water system that passes through a container. (2) A cogeneration device for cold water generation characterized in that the cycle time of adsorption regeneration in the auxiliary adsorption regenerator according to claim 1 is configured to be longer than the cycle time of adsorption regeneration in the regular adsorption regenerator. (3) The compressor according to claim 1 is a cogeneration system for generating cold water, characterized in that its drive shaft is driven by an internal combustion engine for driving a generator, and the drive shaft and the internal combustion engine are configured to be intermittent. sion device (4) A subway cooling device characterized in that the adsorption refrigerator according to claim 1 is installed in a space under a platform of a subway station building. (5) A subway cooling device characterized in that the adsorption refrigerator according to claim 1 is installed in a dead space of a subway tunnel.