JP3358460B2 - Chemical storage air intake cooling system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake air cooling device for an air compressor (reciprocating type, screw type, axial flow type, centrifugal type, etc.) and an air intake cooling device for a gas turbine.

[0002]

2. Description of the Related Art Throughout the year, the peak of power demand is concentrated in the summer, and when viewed in a summer day, it is concentrated from 1:00 pm to 3:00 pm. Since the intake air of the gas turbine that generates electric power expands in summer, the amount of intake air decreases and the output of the gas turbine decreases. That is, since the temperature is usually the highest during the time period when the power demand is highest, the output of the gas turbine is reduced. On the other hand, in the air compressor on the power demand side, the compression efficiency is reduced because the air expands in summer. To compensate for this decrease, increasing the number of revolutions will increase the power demand, and if this increase in power demand is not allowed, the efficiency of the compressor will be reduced.

It is known that cooling the intake air of the air compressor improves the efficiency of the air compressor, and cooling the intake air of the gas turbine can increase the output. As a method for cooling the intake air, a method using an electric compression refrigerator (Japanese Patent Laid-Open Publication No. Hei 3-182638) or a method using a combination of an electric compressor refrigerator and an ice heat storage tank / water heat storage tank ( Japanese Patent Application Laid-Open No. Hei 7-224681) or a method using an absorption refrigerator has been proposed (references,
ISOndryas: Options in Gas Turbine PowerAugmentat
ion Using Inlet Air Chilling: Journal of Engineer
ing for Gas Turbines and Power, April 1991, Vol 1
13, P203 to P211).

[0004]

However, the method using the electric compression refrigerator requires large electric power. Further, the latter absorption refrigerator using lithium bromide can generate cold at about 7 ° C., but it is difficult to generate cold at 2 ° C. or less. Although an absorption refrigerator using ammonia can generate cold heat of 0 ° C. or less, it has problems of toxicity and volatility. In addition, these two types of absorption refrigerators have weak chemical heat storage properties, and it is extremely difficult to chemically store time-varying exhaust heat. For this reason, it is not possible to store heat during the night and take out and use the intake air during the day when it is desired to cool the intake air (a time period in which power demand is met). I could only do it. In addition, since the intake air cannot be sufficiently cooled, it cannot contribute to improving the efficiency of the air compressor or significantly increasing the output of the gas turbine.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the use of an electric compression type refrigerator so that a large amount of electric power is not required, to store waste heat, and to use this heat when desired (for daytime intake cooling). ) To make it possible to use it effectively, and to obtain a lower temperature (2 ° C or less) of cold heat than an absorption refrigerator using lithium bromide to improve the efficiency of the air compressor and improve the gas turbine The purpose of this is to increase the output.

[0006]

Means for Solving the Problems To achieve the above object,
Therefore, the present invention provides an intake-side heat exchanger provided on the intake side of a compressor, a heat storage container having a chemical heat storage material therein, a heat storage-side heat exchanger provided inside the heat storage container, A condensing heat exchanger that condenses the refrigerant when regenerating the heat storage material, a first conduit that guides the refrigerant to the heat storage container via the suction-side heat exchanger during adsorption, and the condensation from the heat storage container during regeneration. comprising a second conduit for guiding the refrigerant to the upstream side of the intake-side heat exchanger through the heat exchanger, wherein the heat storage capacity of LNG cold
Into the heat storage side heat exchanger of the chemical heat storage material section
The chemical heat storage material can be cooled.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a configuration diagram of an embodiment of a chemical regenerative intake air cooling system according to the present invention. In the present embodiment, a chemical regenerative refrigeration system is introduced in the field of an intake air refrigeration system to provide a function not provided in the refrigeration system described above. Japanese Patent Laid-Open No. 3-28219 discloses a chemical heat storage type.
No. 0 discloses a heat storage device for producing heat at two different temperatures, and does not disclose a system used for cooling the intake air. Japanese Patent Application Laid-Open No. 8-61801 discloses a basic principle of a chemical regenerative refrigeration and a refrigerating apparatus, but discloses an application method for improving a function in combination with an intake air cooling system. Absent. further,
There is one described in JP-A-1-296091,
This is a technique for obtaining high-temperature steam by using exhaust heat of a gas turbine and using the steam for a steam turbine, and does not disclose a system for cooling intake air.

This embodiment shows an example in which the intake air of a compressor 101 of a gas turbine power generation system including a compressor 101, a combustor 102, a gas turbine 103, and a power generator 104 is cooled. The main components of the chemical heat storage device used for this purpose are a heat storage container 1 containing a chemical heat storage material (silka gel, zeolite, activated carbon, quicklime, etc.) 2, a heat exchanger 4, a heat exchanger 7 for intake air cooling, and a refrigerant (water / water). ethanol·
Containers 5 containing methanol / ethylene glycol-based antifreeze, propylene glycol-based antifreeze, calcium chloride-based antifreeze, magnesium chloride-based antifreeze, lithium bromide-based antifreeze, sodium chloride-based antifreeze, etc., 6 to form a circulation path Connecting pipes 8, 9, 10, 1
1, a pipe 18 branched from the pipe 8 and valves 12, 13 and 37 provided in the middle of the pipe.

In this embodiment, the heat exchanger 7 for cooling the intake air itself functions as an evaporator. When regenerating the chemical heat storage material 2 in the heat storage container 1, the pipes 14, 15, and the heat exchanger 19 are provided inside the heat storage container 1.
A heat medium (steam, hot water, or the like) flows through the valves 16 and 17 and is heated to desorb the refrigerant. The refrigerant vapor generated at this time reaches the heat exchanger 4 through the pipe 18, the valve 37 (the valves 12 and 13 are closed) and the pipe 10, and releases the latent heat of condensation here to liquefy. .
The condensed refrigerant liquid 6 passes through the pipe 11 and
Is stored inside. In order to improve the heat exchange efficiency of the heat exchanger 4, if the enclosure 3 is provided around the heat exchanger 4 and the cooling is forcibly performed using the fan 3-a, the vapor of the refrigerant in the heat exchanger 4 is quickly condensed. Can be done. Such a regeneration operation, that is, a heat storage operation, is performed during a time period when exhaust heat is generated (eg, at night).
Perform as appropriate.

The heat exchanger 7 for cooling the intake air is cooled, for example, when the demand for electric power reaches a peak, such as from 1 pm to 3 pm in summer, and when the temperature is high and the capacity of the gas turbine is reduced. When it is desired to cool the intake air passing through the valve 37, the valve 37 is closed and the valves 12 and 13 are opened. By such an operation, the refrigerant 6 in the container 5 flows into the heat exchanger 7 through the valve 13 and the pipe 9. The refrigerant 6 takes heat from the heat exchanger 7 (creating cold heat using well water / river water / sea water, air, etc.) and cools the intake air while evaporating.
The resulting steam flows into the heat storage vessel 1 through the pipe 8, the valve 12, and the pipe 18, and the chemical heat storage material 2
Is adsorbed on the chemical heat storage material 2 by the reaction force or adsorption force of The chemical heat storage material 2 reacts with the steam or adsorbs it to generate heat. The heat of reaction (or heat of adsorption) flows cooling water into the heat exchanger 19 via the pipes 14 and 15 and the valves 16 and 17. Is removed by heat.

As described above, the chemical heat storage material 2 has a chemical heat storage property, and has a stronger power to evaporate the refrigerant 6 than an absorption liquid (such as lithium bromide) of a conventional absorption refrigerator. This is because the surface of the chemical heat storage material 2 is solid and reacts (or is adsorbed) with a large amount of refrigerant vapor on the surface and in pores inside the material. Therefore, the refrigerant 6 can be cooled to 2 ° C. or less, and the intake air passing through the gas turbine intake air cooling heat exchanger 7 is cooled to 5 ° C. or less, thereby improving the efficiency of the gas turbine and increasing the output. (In the case of an absorption refrigerator, the limit was to lower the intake air to 10 ° C.). When the chemical heat storage material 2 is silica gel and the refrigerant 6 is water, the chemical heat storage material is regenerated using hot water of about 80 ° C., and the refrigerant can be easily cooled to 2 ° C. or less. Further, if the amount of the adsorbent 2 is more than a certain amount (about 2 or more in mass ratio) with respect to the amount of the refrigerant 6, the refrigerant (water) can be frozen. When the refrigerant 6 is ethanol and the chemical heat storage material 2 is silica gel, if the chemical heat storage material 2 is heated to 100 ° C. or higher and regenerated, the refrigerant 6 can be cooled to −25 ° C. or lower. Further, among the above-described refrigerants, when an antifreeze is used, an ethylene glycol antifreeze, a propylene glycol antifreeze, a calcium chloride antifreeze, a magnesium chloride antifreeze, a lithium bromide antifreeze, a sodium chloride antifreeze, or the like is used. When these antifreeze liquids are used as a refrigerant and an adsorption operation is performed, the refrigerant is -10 ° C to-
Cool to a temperature of 20 ° C.

In this embodiment, when the pipes 9 and 11 are thick and their internal volumes are large to some extent, or when the internal volume of the heat exchanger 7 is large, the vessel 5 may be omitted. I don't care. Accordingly, the valve 13 may be omitted.

In the system of the present embodiment, the heat exchanger 7 for cooling the intake air and the heat storage vessel 1 are directly connected without passing through another heat exchanger, and the heat exchanger 7 is directly connected to the evaporator. Therefore, the heat exchanger 7 is cooled efficiently and can generate low-temperature cold heat.

FIG. 2 shows a configuration for heating or cooling the heat exchanger 19 disposed in the heat storage vessel 1 in the embodiment shown in FIG. The difference from the embodiment shown in FIG. 1 is that a boiler (steam boiler or hot water boiler) 25 and a pump 24 are provided at the other ends of the pipes 14 and 15.

When the chemical heat storage material 2 in the heat storage container 1 is regenerated, the boiler 25 is operated to flow steam or hot water into the heat exchanger 19 via the pipe 14 and the valve 16, and the recirculated water is pumped by the pump 24. To return into the boiler 25 via the pipe 15 and the valve 17.

To cool the chemical heat storage material 2 during the adsorption operation, the valves 16 and 17 are closed and the pipe 2
The valves 22 and 23 attached to 0 and 21 are opened to flow the cooling water into the heat exchanger 19.

FIG. 3 shows an embodiment in which the boiler 25 in FIG. 2 is modified. The difference from FIG. 2 will be described in detail. A heat exchanger 27 for cooling and a pump 26 are provided at the other ends of the pipes 20 and 21, and the internal cooling water is supplied to the pump 26.
Is transported into the heat exchanger 27 by using the air and cooled by using outside air. Further, in this embodiment, the heat exchanger 27 is omitted, the water transported by the pump 26 is allowed to flow into the atmosphere and cooled by direct contact heat exchange, and the cooled water is transferred into the heat exchanger 19. You may use the method of introducing.

Further, this system is a gas turbine 10
3 to regenerate the chemical heat storage material 2 using the exhaust heat of 3,
After introducing the exhaust heat of the gas turbine 103 into the heat exchanger 121 of the boiler 25 through the duct 120, the duct 123
The method of releasing through the is adopted. This heat produces steam or hot water in the boiler 25. As another method, a method of directly regenerating the chemical heat storage material 2 by providing the heat exchanger 121 in the heat storage container 1 may be adopted.

As described above, the cooling device of the chemical heat storage type using a heat storage material such as silica gel has an advantage that the heat storage property is very high and the stored heat can be taken out when needed.
Further, the gas turbine has a problem in that the output decreases when the intake air temperature increases due to the high outside air temperature. The season when the outside air temperature rises is in the summer season, and it is particularly 2-3 after noon.
Time is the highest. This time zone is also a time zone in which the power demand reaches a peak value in order to operate the air conditioners at home or office all at once. In such a case, it is conceivable that the power demand that has reached the peak of the power supply amount of the gas turbine whose output has decreased will exceed the power demand.

Therefore, it is necessary to recover the decrease in the output of the gas turbine generator by cooling the intake air of the gas turbine. However, in an intake air cooling system using a normal refrigeration cycle, a large amount of gas sucked by the gas turbine is consumed. In order to cool the air, a large compressor is required, and there is a disadvantage that the electric motor consumes a large amount of electric power to operate the compressor. Also, if an attempt is made to cool using an absorption refrigerator utilizing the concentration difference between pure water and an aqueous solution of lithium bromide, such an absorption refrigerator does not have heat storage properties and is forced to operate simultaneously with a gas turbine generator. In addition, there is a problem that the refrigerator must be operated at the time of peak power demand.

According to the present embodiment, a chemical thermal storage refrigerator using silica gel or the like as a thermal storage material is used, and the thermal storage material is regenerated, that is, the thermal storage is performed while avoiding the time when the power demand peaks. (Similarly in the embodiment shown in FIG. 2). In particular, as in the embodiment shown in FIG. 3, when the exhaust heat of the gas turbine generator, which is unused heat, is used,
There is also an advantage that reproduction can be performed simultaneously.

The embodiment shown in FIG. 4 is a partial improvement of the embodiment shown in FIG. The drain water 30 flowing down from the outer surface of the heat exchanger 7 for cooling the intake air is collected in a container 29 and is used for a multipurpose by using a pump 31. One use method is to cool the chemical heat storage material 2 by introducing it into the heat exchanger 28 in the heat storage container 1 through the pipe 36, the valve 32, and the pipe 35. This cooling water may be discharged to the outside via the pipe 38 or may be used as other cooling water. On the other hand, drain water 30 is
6, may be introduced around the heat exchanger 4 or the heat exchanger 27 through the valve 33 and the pipe 34 to cool them. As described above, when the heat exchanger 27 is a direct contact heat exchanger with the atmosphere, the drain water 30 may be used as makeup water when the water used for the heat exchanger 27 is insufficient.

FIG. 5 is also an embodiment in which the embodiment shown in FIG. 3 is partially modified. This is provided with two heat storage containers so that the degree of cooling of the refrigerant in the heat exchanger 7 for cooling the intake air can be improved or the cooling duration can be extended. That is, a pipe 18-a is provided separately from the pipe 18 by branching to the pipe 8, and the valves 12-a,
At the other end, a heat storage container 1-a is provided. A heat exchanger 19- is provided in the adsorbent 2-a in the heat storage vessel 1-a.
The heat exchanger 19-a is connected to the pipes 14 and 15 using the pipes 14-a and 15-a, and a valve 16-a is provided in the middle of the pipes 14-a and 15-a. , 17-a. Valve 16,
By alternately switching the 16-a and the valves 17, 17-a, steam or hot water of the boiler 25 is alternately introduced into the heat exchangers 19, 19-a, and the chemical heat storage materials 2, 2-a
Are played alternately. In addition, it is also possible to reproduce simultaneously by opening the valves 16, 16-a and the valves 17, 17-a.

When cooling the intake air, the valve 12 is opened to adsorb the refrigerant 6 to the heat storage material 2 in the heat storage container 1, and when the adsorbing power is reduced, the valve 12 is closed to close the valve 12-.
a, the heat storage material 2 in the heat storage container 1-a is opened.
-A adsorb the refrigerant 6; Thereby, the amount of chemical heat storage can be increased, and the time for cooling the intake air can be lengthened.

Although a heat exchange system for cooling is not shown in this embodiment, a chemical heat storage material 2 or 2-a is used by using a heat exchanger 27 or 28 for cooling shown in FIG. Can be cooled alternately.

FIG. 6 shows an embodiment in which the heat storage amount is further secured and a lower temperature is obtained than in the embodiment shown in FIG.
This is provided with three heat storage containers and a heat exchanger 7 for cooling the intake air.
It is intended to remarkably improve the cooling degree of the refrigerant in the inside or to remarkably extend the cooling duration.

The pipes 18 and 1 branching from the pipe 8 are provided.
8-a, 18-b are valves 12, 12-a,
The heat storage containers 1, 1-a, and 1-b are connected to each other via 12-b.
a, 2-b are filled. In addition, the heat exchangers 19, 19-a, 19-b and the heat exchangers 28, 28 are respectively wrapped in the chemical heat storage materials 2, 2-a, 2-b.
-A and 28-b. Valve 16, 16-
a, 16-b and 17, 17-a, 17-b by alternately switching the pipes 14, 15 or 1
4-a, 15-a or steam or hot water generated from the boiler 25 via pipes 14-b, 15-b are alternately introduced into the heat exchangers 19, 19-a, 19-b, and the chemical heat storage material 2 , 2-a, and 2-b.

On the other hand, valves 32, 39 or 32-
By opening a, 39-a or 32-b, 39-b, cooling water is supplied to the pipe 35, 38 or 35-a,
The chemical heat storage material 2, 2-a, 2-b can be cooled by being introduced into the heat exchanger 28, 28-a, or 28-b through 38-a or 35-b, 38-b.

According to the present embodiment, the valve 12,
Various low temperatures can be obtained depending on the mode of opening and closing of 12-a and 12-b, and cooling can be performed for a long time by opening individually.

FIG. 7 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. A heat pump is introduced in place of the boiler 25 in FIG. This heat pump includes an electric compressor 80, an evaporator 81, a pressure reducing mechanism (expansion valve) 82, a condenser 83, pipes 84 and 85 connecting them to form a circulation path, and a refrigerant (such as Freon) sealed therein. It is constituted by. This heat pump raises the temperature by pumping up the heat, exhaust heat, river water, and sewage held by the outside air from the evaporator 81 side and raises the temperature.
To dissipate heat. This heat is transferred to the heat exchanger 4 in the heat exchanger 43.
It is conveyed to 2. Thereafter, by driving the pump 24, the heat is transmitted to the heat exchanger 19 provided in the chemical heat storage material 2 through the pipes 14 and 15, and is used for regeneration. Since this heat pump is used in a high-temperature region, its coefficient of performance is about twice as high as that in operation of a refrigeration system for producing cold water or a chiller for ice heat storage, and therefore, it is necessary to regenerate the chemical heat storage material 2. Requires less electrical input.

In the embodiment shown in FIG. 8, the heat exchange part 43, the heat exchanger 42 and the pump 24 in the embodiment shown in FIG. This is an embodiment in which the chemical heat storage material 2 can be regenerated instead of the heat exchanger 19. Thereby, the thermal efficiency at the time of reproduction is improved, and the electric input is reduced.

FIG. 9 is also an embodiment to which the embodiment shown in FIG. 2 is applied. This is such that the cold heat of LNG can be used for cooling the chemical heat storage material 2 in the heat storage container 1. The LNG in the LNG tank 70 is transported through a pipe 72 by a pump 71 and sent to a target place through a pipe 74. During this time, the gas may be vaporized via a vaporizer.
It can be used for vaporizing NG. This cold heat is transmitted to the heat exchanger 76 via the heat exchange unit 75. Then pump 7
7 is driven to circulate the internal heat medium (antifreeze, Freon, etc.) and is introduced into the heat exchanger 28 via the pipes 35 and 38 to cool the chemical heat storage material 2. Since the chemical heat storage material 2 is sufficiently cooled by the cold heat of the LNG, the adsorption power of the chemical heat storage material 2 in the adsorption vessel 1 is significantly improved, and the heat exchanger 7 for cooling the intake air is sufficiently cooled. In this embodiment, the pump 77 and the pipes 35 and 38 are omitted, and the heat exchanger 73 is omitted.
May be provided directly in the heat storage container 1. That is, even in this case, the heat exchanger 73 is not directly provided in the heat exchanger 7 for cooling the intake air, but is configured to indirectly cool the intake air via the heat storage container 1. Even if the heat exchanger 73 is damaged, LNG does not flow directly into the intake air, which is safe.

FIG. 10 is a configuration diagram of another embodiment of the present invention. This is because the gas turbine 103 and the steam turbine 1
The present invention is applied to a combined cycle in which a large electric power is generated by the generator 104 in combination with the electric power generator 05.

The exhaust gas after passing through the gas turbine 103 flows into the boiler 107, but the water supplied by the pump 106 becomes steam in the boiler 107 via the heat exchanger through which the exhaust gas passes. This steam enters the steam turbine 105 through the valve 108 and rotates the turbine, contributing to the generation of electricity. When the steam generated in the boiler 107 is excessive (when the power demand is reduced), the heat exchanger 1 in the heat storage vessel 1 is passed through the pipe 111 via the valve 110.
9 to heat and regenerate the chemical heat storage material 2. Thereby, the surplus steam can be effectively used.

FIG. 11 is a block diagram of another embodiment of the present invention. In this embodiment, a container 5-a is provided separately from the container 5 and a refrigerant (water, ethanol, etc.) 6-a is provided inside the container 5-a. A part of the refrigerant liquid condensed in the heat exchanger 4 by the pipe 11-b branched from the pipe 11 can be introduced into the container 5-a through the valve 86. A pipe 8-a branched from the pipe 18 is connected to the vessel 5-a via a valve 12-a. A pipe 11-a branched from the pipe 11 is connected to the container 5 via a valve 88.

With the valves 37, 86 and 88 closed,
By opening the valve 12-a, the refrigerant 6-a in the container 5-a evaporates and is adsorbed on the chemical heat storage material 2 in the heat storage container 1 to cool the refrigerant 6-a, and in some cases freeze it. Let cool. When the cold storage operation is completed, the valve 12-a is closed. Then valves 37 and 8
8, the chemical heat storage material 2 is heated and regenerated, and the refrigerant vapor generated at that time is introduced into the heat exchanger 4 to be liquefied, and this refrigerant liquid is introduced into the vessel 5 through the pipe 11 and the pipe 11-a. When this regeneration operation is completed, the valves 37 and 88 are closed. When it is desired to cool the intake heat exchanger 7, the valves 12 and 13 are opened. The refrigerant 6 in the container 5 is supplied to the heat exchanger 87 in the container 5-a via the pipe 9 and the valve 13.
But flows into the heat exchanger 7 through the pipe 9 while being pre-cooled by the stored refrigerant 6-a.

By such an operation, the inside of the heat exchanger 7 for cooling the intake air is extremely cooled, and the effect of cooling the intake air is remarkably enhanced. In order for such operations to be performed smoothly,
During the cool storage operation, it is necessary to evaporate and empty the refrigerant in the heat exchanger 7 so that the refrigerant in the heat exchanger 7 does not solidify and freeze.

FIG. 12 is a block diagram of a modified embodiment of FIG. This is because a vessel 5-a is provided in a pipe 11 portion connected to the heat exchanger 4, and a heat exchanger 87-a is provided therein and connected to the pipe 11, and the vessel 5-a is connected to the pipe 8-a by a pipe 8-a. It is connected to the pipe 8 via 12-a. The vapor generated when the regeneration operation is performed by opening the valve 37 attached to the pipe 10 is condensed in the heat exchanger 4, and this refrigerant liquid passes through the pipe 11, the heat exchanger 87-a, and the valve 86. It enters the container 5. During this regeneration operation, the valves 12 and 13 are closed. Container 5
When the refrigerant liquid 6 has sufficiently accumulated in the inside, a part thereof is
8 by opening the container 5 through the pipe 11-a.
Return to -a. When the playback operation is completed in this way,
By closing the valves 37, 86, 88 and opening the valve 12-a, the vapor is introduced into the heat storage container 1 through the pipes 8-a, 18 while evaporating the refrigerant 6-a in the container 5-a, The refrigerant 6-a in the container 5-a is frozen to store cold. When such a cold storage operation is completed, the process waits until the intake air is cooled. When cooling the intake air, the valves 12, 37, 86,
13 is opened to form a circulation loop type heat pipe between the heat exchanger 7 for cooling the intake air and the heat exchanger 87-a in the vessel 5-a. At this time, it is necessary to stop the fan 3-a so that the refrigerant does not receive heat from the heat exchanger 4. After passing through the valve 13, the refrigerant 6 in the container 5 flows into the heat exchanger 7 and evaporates while cooling the intake air through the heat exchanger 7. The steam generated at this time flows into the heat exchanger 87-a via the pipe 8, the valves 12, 37, and liquefies while condensing. This refrigerant liquid is supplied to the pipe 11 and the valve 8
Returning again to the container 5 via 6, the same cycle is repeated. In order for this cooling operation to be easily activated first, it is necessary to perform a refrigerant adsorption operation so that the refrigerant does not initially enter the heat exchanger 87-a. That is, when the refrigerant is contained in the heat exchanger 87-a, the refrigerant in the refrigerant 87-a freezes during the cold storage operation of the refrigerant 6-a, causing blockage. In order to enhance the cooling effect of such a heat pipe, it is preferable to open the valve 12-a as appropriate and perform an adsorption operation to evaporate (or sublime) the refrigerant 6-a and cool it.

FIG. 13 is a block diagram of a modified embodiment of FIG. This is branched into a pipe 8 to provide a pipe 10-a with a valve 37-a, which is connected to a heat exchanger 4 for condensation.
-A, and the other end is connected to the pipe 11 via the pipe 11-b. In this way, the refrigerant 6-a in the container 5-a is evaporated to perform a cold storage operation, and then the chemical heat storage material 2 is heated and regenerated, and the vapor of the refrigerant generated at this time is transferred into the heat exchanger 4-a. Introduce and condense, pipe 1
It can be returned into the container 5 via 1-b. In this system, the heat exchanger 7 for intake can be cooled by simultaneously or alternately utilizing both the cold storage heat in the vessel 5-a and the adsorption action of the completely regenerated chemical heat storage material 2.

FIG. 14 is a configuration diagram of a chemical storage type intake air cooling device according to a modified embodiment of FIG. In this case, a separate heat exchanger 87 is provided in the vessel 5 and connected to the heat exchanger 7 for cooling the intake air using pipes 8-a and 9-a to form a circulation loop. Is provided with a pump 89. In the circulation loop on the side of the heat exchanger 7 for cooling the intake air, a refrigerant (Freon, ethylene glycol aqueous solution, etc.) is sealed. The container 5 functions as an evaporator, transmits cold heat generated by evaporation of the refrigerant inside the evaporator to the refrigerant in the heat exchanger 87, circulates and transports the refrigerant using a pump 89, and performs heat exchange for intake air cooling. This is supplied to the vessel 7. According to this method, the refrigerant 6 in the container 5 can be cooled by the adsorption operation of the chemical heat storage material 2. As a method of cold storage, a method using a so-called sensible heat storage method in which the amount of the refrigerant 6 is increased and the temperature is lowered to a temperature slightly higher than its freezing point may be used, or a method using a latent heat storage method in which the refrigerant 6 is frozen may be used. .

[0041]

As described above, according to the present invention,
(1) The chemical heat storage material is regenerated and stored in a time zone in which a large amount of exhaust heat is generated, and when desired, the refrigerant is evaporated by the regenerated chemical heat storage material to generate cold heat so that the intake air can be cooled and fluctuates. Effective use of waste heat is now possible. (2) Compared with the conventional absorption refrigerator using lithium bromide, the system using the chemical heat storage material enables the generation of cold heat of 2 ° C. or less using the exhaust heat and the heat generated by the boiler, The intake air can be cooled to 5 ° C. or less, so that the efficiency of the air compressor can be greatly improved, and the output of the gas turbine generator can be greatly increased. (3) The cold can be obtained using a combination of non-toxic substances such as ammonium. (4) In addition, it is possible to cool the refrigerant by freezing it, and to store the cold in a time period when the exhaust heat is large, and to take out this cold heat when desired and use it for intake air cooling. Effective use of waste heat has become possible. (5) When the chemical heat storage system of the present invention is regenerated by a heat pump, the operation can be performed with a high coefficient of performance, so that the electric input is reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a chemical heat storage device of the present invention.

FIG. 2 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 1;

FIG. 3 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 2;

FIG. 4 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 3;

FIG. 5 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 3;

FIG. 6 is a configuration diagram of an embodiment obtained by changing the embodiment shown in FIG. 5;

FIG. 7 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 2;

FIG. 8 is a configuration diagram of an embodiment obtained by changing the embodiment shown in FIG. 7;

FIG. 9 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 2;

FIG. 10 is a configuration diagram of another embodiment of the present invention.

FIG. 11 is a configuration diagram of another embodiment of the present invention.

FIG. 12 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 11;

FIG. 13 is a configuration diagram of an embodiment obtained by changing the embodiment shown in FIG. 12;

FIG. 14 is a configuration diagram of an embodiment obtained by modifying the embodiment shown in FIG. 2;

[Explanation of symbols]

1 ... heat storage container, 2 ... chemical heat storage material, 4, 7, 19, 27, 28 ... heat exchanger, 5 ... container, 6 ... refrigerant, 24 ... pump, 25 ...
Boiler, 80 ... Electric compressor, 81 ... Evaporator, 82 ... Decompression mechanism (expansion valve), 83 ... Condenser, 101 ... Compressor, 102
…… Combustor, 103… Gas turbine, 104 …… Generator, 10
5… Steam turbine, 107… Boiler.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-299868 (JP, A) JP-A-6-180162 (JP, A) JP-A-1-296091 (JP, A) JP-A-4- 194561 (JP, A) JP-A-6-193993 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25B 17/08 F02C 7/143 F25B 27/02

Claims (9)

(57) [Claims] An intake-side heat exchanger provided on an intake side of a compressor; a heat storage container having a chemical heat storage material therein; a heat storage-side heat exchanger provided inside the heat storage container; A condensing heat exchanger that condenses the refrigerant when regenerating the material, a first conduit that guides the refrigerant to the heat storage container via the suction-side heat exchanger during adsorption, and the condensing heat from the heat storage container during regeneration. and a second conduit for guiding the refrigerant to the upstream side of the intake-side heat exchanger through the exchanger, the heat storage vessel of LNG cold
Introduced into the heat storage side heat exchanger of the chemical heat storage material section
Chemical storage air intake cooling system that can cool scientific heat storage material
Place. 2. A container according to claim 1, wherein said container is provided upstream of said intake-side heat exchanger and stores refrigerant introduced through said second conduit during regeneration. A chemical regenerative air intake cooling device comprising: a valve provided between the heat exchanger and the heat exchanger. 3. The intake air cooling system of claim 1, wherein a plurality of said heat storage containers are provided. 4. The heat exchanger according to claim 1, further comprising a heat exchanger provided in addition to the heat storage side heat exchanger provided in the heat storage container, wherein the heat storage side heat exchanger is used for regeneration. Chemical storage air intake cooling device used during adsorption. 5. The container according to claim 1, wherein said container is provided upstream of said intake-side heat exchanger and stores refrigerant introduced through said second conduit during regeneration. A chemical regenerative air intake cooling device, comprising: an in-vessel heat exchanger thermally coupled to the intake-side heat exchanger; and using the container as an evaporator. 6. A heat source for heating the heat storage side heat exchanger according to claim 1, wherein heat generated from a boiler, waste heat of a gas turbine, waste heat generated from another system, or heat generated by a heat pump is used. Chemical storage air intake cooling system. 7. The chemical storage air intake cooling device according to claim 1, wherein the drain water generated in the intake heat exchanger is used for a regeneration operation and an adsorption operation of the chemical heat storage material. 8. The method according to claim 1, wherein the chemical heat storage material is selected from the group consisting of silica gel, zeolite, activated carbon and quicklime, and the refrigerant is water, ethanol, methanol, ethylene glycol antifreeze, propylene glycol antifreeze, calcium chloride. A chemical thermal storage type intake air cooling system that uses a combination of these selected from the group of antifreeze, magnesium chloride antifreeze, lithium bromide antifreeze, and sodium chloride antifreeze. 9. A chemical regenerative intake air cooling system according to claim 1, further comprising means for solidifying the refrigerant by an adsorption operation to store the refrigerant, taking out the regenerative heat when desired, and supplying it to a heat exchanger for cooling the intake air.