JPH06317342A - Heat storage tank - Google Patents

Abstract

PURPOSE:To make it possible to stably keep a state of storage of a heating medium liquid in a thermally stratified state in a heating medium liquid storage part by a construction wherein a pipeline for supplying and discharging a high-temperature heating medium liquid is made to open below the upper end edge of an erect wall and in an upper partitioned part and a pipeline for supplying and discharging a low-temperature heating medium liquid above the lower end edge of the erect wall and in a lower partitioned part respectively. CONSTITUTION:A flow passage 6 for high-temperature cold water which makes a storage part 2 and an upper partitioned part 3A of a supplying-discharging part 3 on the opposite sides communicate with each other is formed between the upper end edge of an erect wall 4 and the liquid surface of cold water stored in a tank and through the whole width of the inside of the tank. Between the lower end edge of the erect wall 4 and the bottom wall of the tank, besides, a flow passage 7 for low-temperature cold water which makes the storage part 2 and a lower partitioned part 3B of the supplying-discharging part on the opposite sides communicate with each other is formed through the whole width of the inside of the tank. A pipeline 8A on the high temperature side out of cold water circulation passages connected to a refrigerator and an air conditioner on the load side is made to open in the upper partitioned part 3A of the supplying-discharging part 3, below the upper end edge of the erect wall 4, while a pipeline 8B on the low temperature side is made to open in the lower partitioned part 3B of the supplying-discharging part 3, above the lower end of the erect wall 4.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage tank for air conditioning. 2. Description of the Related Art Conventionally, as a heat storage tank for an air conditioner which is designed to improve heat storage efficiency by suppressing heat loss due to mixing of a high temperature storage heat transfer fluid and a low temperature storage heat transfer fluid in the tank, a moat weir type or improvement. Although the moguri weir type heat storage tank has been put into practical use, while those types of heat storage tanks are equipped with a heat transfer medium storage section consisting of a meandering flow path, heat is generated without forming a meandering flow path. In a relatively simple type heat storage tank in which the medium storage part is formed by a simple box-shaped chamber,
By means such as (a) or (b) below, the heat medium liquid storage state in the box-shaped heat medium liquid storage portion is made to approach the temperature stratified state, thereby reducing the mixed heat loss in the tank. It was (A) As shown in FIG. 5, the heat medium liquid supply / discharge pipe line (8A) directly inserted and arranged in the heat medium liquid storage section (2),
Of the (8B), the high-temperature heat transfer medium supply / discharge pipe (8A) is opened in the upper layer portion of the heat transfer medium storage part (2), and the low-temperature heat transfer medium supply / discharge pipe (8B) is connected to the heat transfer medium. The lower part of the liquid storage part (2) is opened. (B) As shown in FIG.
The high temperature heat transfer liquid supply / discharge part (3A) is formed by the standing wall (4A), and the low temperature heat transfer liquid supply / discharge part (3B) is formed by the second standing wall (4B) on the other side of the tank. A gap formed so that the high temperature heat transfer medium liquid supply / discharge to / from the box-shaped heat transfer medium storage portion (2) is located between the upper edge of the first standing wall (4A) and the liquid level of the heat transfer medium storage liquid in the tank. A horizontal laminar flow in the upper part of the storage part (2) through a flow path (6) for high-temperature heat transfer medium liquid, and supplying and discharging the low-temperature heat transfer liquid to the storage part (2) The same process is performed in a horizontal laminar flow in the lower part of the storage part (2) through a gap-shaped flow path for low-temperature heat transfer medium (7) formed between the lower edge of the standing wall (4B) and the bottom wall of the tank. Let (No reference can be given.) [Problems to be Solved by the Invention] However, in the above-mentioned means (a), the heat medium liquid supply / discharge pipe lines (8A) and (8B) are used.
The stored heat transfer medium is violently stirred by the stirring action that accompanies the discharge of the heat transfer medium, and it is virtually impossible to form and maintain the temperature stratified state of the stored heat transfer medium. The objective of reducing loss was hardly achieved. Further, in the means of (b) above, the supply / discharge pipe line (8A),
Although it is possible to avoid stirring the stored heat transfer medium liquid by the stirring action accompanying the discharge from (8B), the first standing wall (4
The flow path (6) for high temperature heat transfer medium formed on the upper edge side of A) and the flow path (7) for low temperature heat transfer medium formed on the lower edge side of the second standing wall (4B) on the other side are box-shaped. Due to the diagonal position in the heat medium liquid storage section (2), the stored heat medium liquid is diagonally formed over both flow paths (6) and (7) accompanying the heat medium liquid supply / discharge. There is a problem that short-circuit flow easily occurs, and the diagonal short-circuit flow disturbs the temperature stratification state of the stored heat transfer medium liquid, so that considerable heat loss due to mixing occurs. There is also a problem that the effective heat storage capacity becomes small relative to the tank volume because dead water-like heat medium liquid retention occurs at the other diagonal portions (a) and (b) of the heat medium liquid storage section (2). there were. The object of the present invention is to effectively reduce the heat loss in the mixing tank by rationally forming the heat medium liquid supply / discharge part for the box-shaped heat medium liquid storage part having no meandering flow path. In addition, the ratio of the effective heat storage capacity to the tank volume is maximized. A characteristic structure of a heat storage tank according to the present invention is that a standing wall that divides the inside of the tank into a heat medium liquid storage section and a heat medium liquid supply / discharge section is provided, and the supply / discharge section is provided. A horizontal wall for partitioning up and down is provided, and a heat medium liquid flow path that connects the storage portion and the upper partition portion of the supply / discharge portion is located between the upper edge of the standing wall and the liquid surface of the stored heat medium liquid. A heating medium liquid flow path that connects the storage part and the lower partition part of the supply / discharge part between the lower end edge of the standing wall and the bottom wall of the tank. The supply / discharge pipe line for the upper partition of the supply / discharge unit, and
The low-temperature heat medium liquid supply / discharge pipe lines are opened in the lower partition portions of the supply / discharge unit, respectively, and the action and effect are as follows. That is, as shown in FIG. 1 or 3,
Supply and discharge of the high-temperature heat transfer medium to the box-shaped heat transfer medium reservoir (2)
In the upper layer part of the storage part (2) via a gap-shaped heat transfer medium flow path (6) formed so as to be positioned between the upper edge of the standing wall (4) and the liquid surface of the heat transfer liquid stored in the tank. A low-temperature heat transfer medium liquid supply / discharge to / from the storage portion (2) in a horizontal laminar flow form between the lower end edge of the standing wall (4) and the bottom wall of the tank (1). By performing the same in a horizontal laminar manner in the lower layer portion of the storage portion (2) via the passage (7), the heat medium liquid is discharged from the heat medium liquid supply / discharge pipe passages (8A), (8B). While preventing the stored heat transfer fluid from being stirred by the stir action,
In order to form and maintain the temperature stratified state in the box-shaped heat medium liquid storage part (2), the heat medium liquid flow passage (6) and the low temperature medium which carry out the heat medium liquid supply and discharge in a horizontal laminar flow are provided. Since the heat medium liquid flow path (7) is formed on the upper end edge side and the lower end edge side of the same standing wall (4), the heat medium liquid flow paths (6) and (7) are supplied and discharged. Since the flow direction of the heat transfer liquid (horizontal direction) and the direction of short-circuiting both heat transfer liquid flow paths (6) and (7) (direction along the standing wall (4)) are orthogonal to each other, both heat It is possible to avoid the above-described diagonal short-circuit flow of the heat medium liquid caused by the fact that the medium liquid flow path is located at the diagonal position of the box-shaped heat medium liquid storage part, and the box shape accompanying the heat medium liquid supply and discharge can be avoided. Heat medium storage part (2)
It is possible to bring the heat medium liquid flow state inside to a vertical piston flow state which is optimum for forming and maintaining the temperature stratification state. As a result of the above, the heat loss due to the mixing of the high temperature storage heat transfer fluid and the low temperature storage heat transfer fluid in the tank can be effectively reduced, and the heat transfer fluid storage portion is formed in a simple box shape. Although it is a simple model, the heat storage efficiency can be greatly improved, and dead water-like heat medium liquid retention due to short-circuit flow in the storage part can be avoided, so that the ratio of the effective heat storage capacity to the tank volume can be increased. It can be improved and can be made compact while having a large effective heat storage capacity, making it an excellent heat storage tank in terms of both heat balance economy, facility cost economy, and installability as a whole. did it. Next, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. Inside the cold water tank for air conditioning (1) composed of a box-shaped concrete structure, a standing wall (4) for partitioning the internal space into a cold water storage section (2) and a cold water supply / discharge section (3) for it is provided in the tank. The cold water supply / discharge section (3) formed by being provided so as to extend over the entire width in the tank near the one side of the tank, and the lateral wall (5) extending up and down the standing wall (4) and the side wall of the tank is almost vertically divided into two parts.
It is divided into equal parts. A gap-shaped flow path for high-temperature cold water (6) which connects the storage section (2) and the upper partition section (3A) of the supply / discharge section (3) is connected to the upper edge of the standing wall (4) and the tank. It is formed over the entire width in the tank in a state of being located between the liquid surface of the stored cold water and the storage portion (2) and the supply / discharge portion between the lower end edge of the standing wall (4) and the tank bottom wall. The same gap-shaped low-temperature cold water flow path (7) communicating with the lower partition part (3B) is formed over the entire width of the tank, and a cold water circulation pipe line is connected to the refrigerator or the load side air conditioner. Among them, the high temperature side conduit (8A) is in the upper partition part (3A) of the supply / discharge section (3), and the low temperature side conduit (8B) is the lower partition part (3B) of the supply / discharge section (3). Each is opened inside. That is, the supply and discharge of high-temperature cold water to and from the storage section (2) are performed in a horizontal laminar flow manner in the upper layer section of the storage section (2) via the flow path (6) for high-temperature cold water in the form of a gap, and The supply / drainage of the low-temperature cold water to / from the storage part (2) is performed through a gap-shaped low-temperature cold-water flow path (7) which is vertically below the high-temperature cold water flow path (6) and opens in the same direction. By performing the same horizontal tank flow in the lower layer part of (2), the flow state of the stored cold water in the storage part (2) accompanying the cold water supply and discharge is changed to a vertical piston flow state, whereby The cold water storage state in the storage section (2) is maintained in a good temperature stratified state with extremely small mixing loss. The arrows in the figure show the flow state when low-temperature cold water is supplied from the refrigerator to the tank (1) and high-temperature cold water is taken out from the tank (1) to the refrigerator. (1)
From the load side air conditioner to the load side air conditioner and the high temperature chilled water is returned from the load side air conditioner to the tank (1), the directions of the arrows are all reversed in the heat storage consumption operation state. Another Embodiment Next, another embodiment will be described. 3 and
As shown in FIG. 4, two standing walls (4) parallel to each other are provided in the central portion of the tank (1) so as to extend over the entire width of each of the standing walls (4). For high-temperature cold water in the form of a gap, which divides the supply / discharge part (3) formed between them into upper and lower parts by the lateral wall (5) and connects the upper partition part (3A) of the supply / discharge part (3) and the storage part (2). The flow path (6) is located between the upper edge of each standing wall (4) and the liquid level of the cold water stored in the tank, and the lower partition part (3B) and the storage part of the supply / discharge part (3). (2) Flow path (7) for low temperature cold water that communicates with (2)
Between the lower edge of each standing wall (4) and the bottom wall of the tank,
In the wall structure, the hot / cold water supply / discharge pipe line (8A) is located in the upper partition (3A) of the supply / discharge unit (3), and the low-temperature cold water supply / discharge pipe line (8B) is located below the supply / discharge unit. The partition portions (3B) may be configured to be opened respectively, and this configuration of another embodiment is suitable when the volume of the storage portion (2) is large. As the storage object, various heat medium liquids such as cold water for cooling, hot water for heating, or heat medium liquids obtained by adding various chemicals to these water heat mediums can be stored. [0015]

[Brief description of drawings] FIG. 1 is a vertical sectional view showing an embodiment of the present invention. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a vertical sectional view showing another embodiment of the present invention. 4 is a sectional view taken along line IV-IV in FIG. FIG. 5 is a vertical sectional view showing a conventional example. FIG. 6 is a vertical cross-sectional view showing another conventional example. [Explanation of symbols] 1 tank 2 Storage 3 supply and discharge section 3A Upper partition 3B lower partition 4 standing wall 5 horizontal walls 6,7 Flow path 8A High temperature heat transfer liquid supply / discharge line 8B Supply / Discharge Pipeline for Low Temperature Heat Transfer Liquid

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[Procedure Amendment] [Date of submission] February 28, 1994 [Procedure Amendment 1] [Amendment target document name] Specification [Amendment target item name] Full text [Correction method] Change [Amendment content] [Document name] Specification Book [Title of Invention] Heat storage tank [Claims] A standing wall (4) is provided to partition the inside of the tank (1) into a heat medium liquid supply / discharge part (3) and heat medium liquid storage parts (2) on both sides thereof. A horizontal wall (5) for partitioning the heat medium liquid supply / discharge part (3) into an upper partition part (3A) and a lower partition part (3B) is provided, and the upper partition part (3A) and the heat medium on both sides thereof. The upper heat medium liquid flow path (6) that communicates with the liquid reservoir (2) is
It is formed so as to be located between the upper edge of the standing wall (4) and the liquid surface of the stored heat transfer medium liquid, and the lower partition part (3B) and the heat transfer liquid storage parts (2) on both sides thereof are formed. The lower heat medium liquid flow path (7) to be communicated,
It is formed between the lower end edge of the standing wall (4) and the bottom wall of the tank (1), and a high temperature heat transfer medium supply / discharge pipe line (8A) is provided below the upper end edge of the standing wall (4). A heat storage tank which is opened in the upper partition portion (3A), and the low temperature heat transfer medium supply / discharge pipe line (8B) is opened in the lower partition portion (3B) above the lower end edge of the standing wall (4). Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage tank for storing various heat transfer liquids such as cold water for cooling and hot water for heating. 2. Description of the Related Art Conventionally, as a heat storage tank in which heat loss due to mixing of a high temperature storage heat transfer fluid and a low temperature storage heat transfer fluid in a tank is suppressed to improve heat storage efficiency, a moat weir type or an improved moguri weir. Type heat storage tanks have been put to practical use, while those types of heat storage tanks are equipped with a heat transfer medium storage section consisting of a meandering flow path, a heat transfer solution without forming a meandering flow path. In a heat storage tank of a relatively simple type in which the storage part is formed by a simple box-shaped chamber, the heat transfer medium in the box-shaped heat transfer medium storage part is formed by means of the following (a), (b) and (c). The liquid storage state was made to approach the temperature stratified state, thereby reducing the mixing heat loss in the tank. (A) As shown in FIG. 5, the heat medium liquid supply / discharge pipe line 8A, which is directly inserted and arranged in the box-shaped heat medium liquid reservoir 2,
Of the 8B, the high-temperature heat medium liquid supply / discharge pipe line 8A is connected to the heat medium liquid storage section 2
Is opened to the upper layer portion at a position closer to one side, and the low-temperature heat medium liquid supply / discharge pipe line 8B is opened to the lower layer portion at a position closer to the other side of the heat medium liquid storage portion 2. (B) As shown in FIG. 6, a first standing wall 4A forms a high temperature heat transfer medium supply / discharge section 3A on one side of the tank and a second standing wall 4B on the other side of the tank. To form a low temperature heat transfer medium liquid supply / discharge section 3B, and to supply / discharge the high temperature heat transfer medium liquid to / from the box-shaped heat transfer medium storage section 2.
A horizontal laminar flow is formed in the upper layer of the reservoir 2 through a gap-shaped flow path 6 for high temperature heat transfer medium formed so as to be located between the upper edge of A and the liquid surface of the heat transfer medium stored in the tank. And the supply and discharge of the low-temperature heat transfer medium to the heat transfer medium reservoir 2 are performed by the second standing wall 4B.
Similarly, a horizontal laminar flow is performed in the lower layer portion of the storage section 2 via a gap-shaped flow path 7 for low-temperature heat transfer medium formed between the lower edge of the tank and the bottom wall of the tank. (C) As disclosed in Japanese Utility Model Publication No. 59-23973, a high temperature header is connected to an upper part on one side of the tank, and the high temperature header and a high temperature heat transfer liquid supply / discharge pipe line are connected to each other. A pressure equalizing pipe and a plurality of communication pipes are arranged, while
A low-temperature header, and a pressure equalizing pipe and a plurality of communication pipes connecting the low-temperature header and the low-temperature heat transfer medium supply / discharge pipe line are arranged in the lower part on one side in the tank, and the high-temperature header and the low-temperature header are connected. Each of them is provided with a horizontally long slit-shaped nozzle that discharges and sucks the heat transfer medium horizontally into and from the heat transfer medium reservoir. However, in the above-mentioned means (a), the stored heat transfer medium liquid is agitated by the stirring action accompanying the discharge of the heat transfer medium liquid from the heat transfer medium supply / discharge pipe lines 8A, 8B. Since it is vigorously stirred, it forms a temperature stratification state of the stored heat transfer medium liquid,
It was practically impossible to maintain and could hardly achieve the purpose of reducing the mixing heat loss. Further, in the above-mentioned means (b), the supply / discharge pipe line 8
Although it is possible to avoid stirring the stored heat transfer medium liquid by the stirring action accompanying the discharge from A and 8B, the first standing wall 4A
In the box-shaped heat medium liquid storage part 2, the high-temperature heat medium liquid flow path 6 formed on the upper end edge side and the low-temperature heat medium liquid flow path 7 formed on the other end on the lower end edge side of the second standing wall 4B. Since it is located at a diagonal position, the stored heat transfer medium liquid is likely to short-circuit diagonally across both flow paths 6 and 7 accompanying the supply and discharge of the heat transfer medium liquid. There is still a problem that a considerable heat loss due to mixing occurs due to the disturbance of the temperature stratification state. In addition, due to the diagonal short circuit flow, dead water-like heat medium liquid retention occurs in the other diagonal portions a and b of the box-shaped heat medium liquid storage portion 2, so that the effective heat storage capacity (retrievable) is obtained. There is also a problem that the capacity that effectively contributes to heat storage is small relative to the tank volume. Further, in the above-mentioned means (c), compared with the above-mentioned means (a) and (b), the storage state of the heat transfer medium can be brought closer to the temperature stratified state, but the header, the pressure equalizing pipe, and Since a complicated pipe structure such as a communication pipe is located inside the heat transfer fluid storage part, the high temperature heat transfer fluid is discharged from the high temperature header to the heat transfer fluid storage part, and in parallel therewith, the lower layer in the heat transfer fluid storage part. The downward flow of the heat transfer fluid in the heat transfer fluid reservoir due to sucking the low temperature heat transfer fluid into the heat transfer fluid reservoir, or conversely, discharging the low temperature heat transfer fluid from the low temperature header to the heat transfer fluid reservoir, and
In parallel with this, in the upward flow of the heat medium liquid in the heat medium liquid storage part due to sucking the high temperature heat medium liquid of the upper layer in the heat medium liquid storage part, the downward flow and the upward flow of the heat medium liquid are It is disturbed by the existence of the above-mentioned complicated pipe structure, so that the storage state of the heat transfer fluid cannot be stably maintained in the ideal temperature stratified state, and there is a problem that the mixed heat loss is still large. Further, since the high-temperature header and the low-temperature header for discharging / inhaling the heat transfer medium are respectively located on one side on the same side in the tank, the header disposing side is arranged in order to secure a large heat transfer medium storage amount. The larger the distance between the tank wall and the opposite tank wall, the slower the downward flow and upward flow in the part close to the opposite tank wall in the tank, and the state becomes closer to the dead water area. There is also a problem that a large effective heat storage capacity cannot be secured despite the increase in tank volume. An object of the present invention is to make it possible to stably maintain the heat medium liquid storage state in the heat medium liquid storage portion in a temperature stratified state, and yet to secure a large effective heat storage capacity for the tank volume. There is a point to do. The heat storage tank according to the present invention is characterized in that a vertical wall is provided for partitioning the inside of the tank into a heat medium liquid supply / discharge section and heat medium liquid storage sections on both sides thereof. A horizontal wall for partitioning the liquid supply / drain portion into an upper partition portion and a lower partition portion is provided, and an upper heat medium liquid flow path for communicating the upper partition portion and the heat medium liquid storage portions on both sides thereof is provided at an upper end of the standing wall. The lower heat transfer medium flow path, which is formed so as to be located between the edge and the liquid surface of the stored heat transfer liquid, connects the lower partition part and the heat transfer liquid storage parts on both sides thereof to the standing wall. Is formed between the lower edge of the tank and the bottom wall of the tank, and a supply / discharge pipe for high temperature heat transfer medium is opened in the upper partition below the upper edge of the standing wall to supply / discharge low temperature heat transfer fluid. The pipeline is opened in the lower partition portion above the lower end edge of the standing wall, and its action and effect are It is as follows. That is, in the above-mentioned characteristic structure, the high-temperature heat transfer medium liquid is supplied into the tank from the high-temperature heat transfer medium supply / discharge pipe line, and the low-temperature heat transfer medium liquid is supplied into the tank from the low-temperature heat transfer medium liquid supply / discharge line. When discharging the low temperature heat transfer fluid, the high temperature heat transfer fluid is supplied in a horizontal laminar flow form to the upper layer of each heat transfer fluid storage portion on both sides via the upper heat transfer fluid flow path formed on the upper edge side of the standing wall, In parallel with this, by discharging the low-temperature heat transfer medium liquid of the lower layer in each heat transfer liquid storage part on both sides through the lower heat transfer liquid flow path formed on the lower edge side of the standing wall, each heat transfer liquid storage part on both sides is discharged. Under the guiding action of each facing standing wall, the heat medium liquid in each heat medium liquid storage portion is caused to flow downward in a piston flow state. On the contrary, the high temperature heat transfer medium liquid is discharged from the tank through the high temperature heat transfer medium supply / discharge pipe line, and the low temperature heat transfer medium liquid is supplied into the tank from the low temperature heat transfer medium supply / discharge line. In this case, the low-temperature heat transfer medium is supplied in a horizontal laminar flow to the lower layer of each heat transfer medium storage section on both sides via the lower heat transfer medium flow path formed on the lower edge of the standing wall, and in parallel with it, By discharging the upper layer high temperature heat transfer fluid in each heat transfer fluid storage part on both sides through the upper heat transfer fluid flow path formed on the upper edge side of the standing wall, guiding of each standing wall facing each heat transfer fluid storage part on both sides Under action, the heat transfer liquid in each heat transfer liquid reservoir is caused to flow upward in a piston flow state. Further, the high-temperature heat medium liquid supply / discharge pipe line opened to the upper partition portion of the heat medium liquid supply / discharge portion is opened to the upper partition portion below the upper edge of the standing wall, and
The low-temperature heat-medium liquid supply / discharge pipe line opened to the lower partition part in the heat-medium liquid supply / discharge part is opened in the lower partition part above the lower end edge of the standing wall so that The turbulence of the standing wall prevents the heat medium liquid turbulence generated by the discharge and suction of the heat medium liquid at the opening of the pipe from propagating to the heat medium liquid reservoirs on both sides. That is, the formation of the piston flow under the guide action of the standing wall and the prevention of the turbulent propagation due to the barrier action of the standing wall prevent the short circuit flow of the heat medium liquid storage state in each heat medium liquid storage portion on both sides. It can be maintained in a stable temperature stratified state without stirring. Further, since the heat medium liquid storage section is formed on both sides of the heat medium liquid supply / discharge section by the partition by the vertical wall, even if the tank volume is increased, for example, as shown in FIGS. The heat medium liquid supply / discharge part 3 is formed at one end of the tank by means of 4 and the heat medium liquid storage part 2 is formed only on the other side of the heat medium liquid supply / discharge part 3 in comparison with the embodiment shown in FIG. It is possible to effectively avoid the situation where the above-mentioned downward flow or upward flow of the heat medium liquid becomes slow on the inner end side of the tank away from the medium liquid supply / discharge section 3 and a situation close to the dead water region occurs, and the heat medium liquid supply is performed. Stable formation of a piston flow in a temperature stratified state even on the inner end side of the tank away from the discharge part 3.
Can be maintained. That is, according to the present invention, the storage state of the heat transfer medium can be stably maintained in the temperature stratified state, so that the inside of the tank of the high temperature storage heat transfer liquid and the low temperature storage heat transfer liquid can be maintained. The heat loss due to the mixing can be effectively reduced, and thus, the heat storage efficiency can be greatly improved even though the heat medium liquid storage portion has a simple structure in a box shape. Further, since the piston flow in the temperature stratified state can be stably formed and maintained even on the inner end side of the tank away from the heat medium liquid supply / discharge section, a high ratio of the effective heat storage capacity to the tank volume can be secured. It is possible to make a heat storage tank that is compact but has a large effective heat storage capacity.
As a whole, it has become possible to provide a heat storage tank which is excellent in terms of heat balance economical efficiency, facility cost economical efficiency, and installation efficiency. Embodiments of the present invention will be described below with reference to FIGS. 3 and 4. 1 is a cold water tank for air conditioning as a heat storage tank composed of a box-shaped concrete structure, and in the center of the tank,
Two standing walls 4 that are parallel to each other are provided over the entire width of the tank, and the inside of the tank is provided by these standing walls 4 and the cold water supply / discharge section 3 between the compatible walls 4 and both sides of the cold water supply / discharge section 3 are provided. It is separated from the cold water storage section 2 located at. The cold water supply / discharge section 3 is divided into an upper partition section 3A and a lower partition section 3B by a lateral wall 5 extending over the compatible wall 4 in such a manner that it is substantially vertically divided into two equal parts. On the upper edge side of each standing wall 4, a gap-like upper flow path 6 for high-temperature cold water that connects the upper partition portion 3A of the supply / discharge section 3 and the storage sections 2 on both sides is connected to the upper edge of each standing wall 4. Is formed over the entire width of the tank in a state of being positioned between the tank and the liquid surface of the cold water stored in the tank, and between the bottom edge of each standing wall 4 and the bottom wall of the tank. Side partition part 3B
Similarly, a lower flow path 7 for low temperature cold water, which is also in the shape of a gap, is formed over the entire width of the tank so as to connect the storage section 2 on both sides. In the cold water circulation passage connected to the refrigerator or the load side air conditioner, the high temperature side pipe passage 8A is opened below the upper edge of the standing wall 4 with respect to the upper partition portion 3A of the supply / discharge portion 3. In addition, the low temperature side conduit 8B is connected to the supply / discharge unit 3
Is opened above the lower edge of the standing wall 4 with respect to the lower partition portion 3B. That is, with the above structure, the supply and discharge of the high-temperature cold water to and from both the reservoirs 2 are performed in a horizontal laminar flow manner in the upper layers of both the reservoirs 2 through the upper flow passage 6 for the high-temperature cold water in the form of a gap,
In addition, the low-temperature cold water is supplied to and discharged from both the reservoirs 2 through the gap-shaped lower flow passage 7 for the low-temperature cold water located vertically below the upper flow passage 6 for the high-temperature cold water. Laminar flow is performed, whereby the flow of the stored cold water in both storage parts 2 due to the supply and discharge of the cold water becomes a vertical piston flow shape under the guiding action of the standing walls 4 facing both storage parts 2. To do. Further, the supply / discharge unit 3 is arranged in the center of the tank,
By forming the storage section 2 on both sides of the supply / discharge section 3,
The piston flow described above is effectively and stably formed even on the inner end side of the tank, which is remote from the supply / discharge unit 3. The high temperature side conduit 8A and the low temperature side conduit 8B
Propagation of cold water turbulence that accompanies the suction and discharge of cold water at the opening of the pipe to the both storage portions 2 is prevented by the barrier action of each standing wall 4, and the formation of these piston flows and the prevention of the turbulent propagation prevent the both water storage. The cold water storage state in the section 2 is stably maintained in a good temperature stratified state with extremely small mixing loss, and a large effective heat storage capacity can be secured for the tank volume. The arrows in the figure show the flow state when low-temperature cold water is supplied from the refrigerator to the tank 1 and high-temperature cold water is taken out from the tank 1 to the refrigerator. Take it out to the air conditioner, and supply hot and cold water from the load side air conditioner to tank 1.
In the heat storage consumption operation state of returning to, the directions of the arrows are all in the opposite directions. [Other Embodiments] As a storage object, various kinds of heat medium liquids such as cold water for cooling, hot water for heating, or heat medium liquids obtained by adding various chemicals to these water heat mediums are to be stored. You can BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view showing a comparative example. FIG. 2 is a sectional view taken along the line II-II in FIG. 1. FIG. 3 is a vertical sectional view showing an embodiment of the present invention. 4] A sectional view taken along line IV-IV in Fig. 3 [Fig. 5] A longitudinal sectional view showing a conventional example [Fig. 6] A longitudinal sectional view showing another conventional example [Description of symbols] 1 tank 2 storage part 3 supply / discharge part 3A Upper partition part 3B Lower partition part 4 Standing wall 5 Horizontal walls 6, 7 Flow path 8A High temperature heat medium liquid supply / discharge pipe line 8B Low temperature heat medium liquid supply / discharge pipe line

Claims (1)

What is claimed is: 1. A standing wall (4) for partitioning the inside of a tank (1) into a heat medium liquid supply / discharge part (3) and heat medium liquid storage parts (2) on both sides thereof, and the heat medium liquid supply / discharge part. A lateral wall (5) for partitioning (3) into an upper partition part (3A) and a lower partition part (3B) is provided, and the upper partition part (3A) and the heat medium liquid storage parts (2) on both sides thereof are provided. The upper heat medium liquid flow path (6) to be communicated,
It is formed so as to be located between the upper edge of the standing wall (4) and the liquid surface of the stored heat transfer medium liquid, and the lower partition part (3B) and the heat transfer liquid storage parts (2) on both sides thereof are formed. The lower heat medium liquid flow path (7) to be communicated,
It is formed between the lower end edge of the standing wall (4) and the bottom wall of the tank (1), and a high temperature heat transfer medium supply / discharge pipe line (8A) is provided below the upper end edge of the standing wall (4). A heat storage tank which is opened in the upper partition portion (3A), and the low temperature heat transfer medium supply / discharge pipe line (8B) is opened in the lower partition portion (3B) above the lower end edge of the standing wall (4).