JPS61159092A - Heat accumulating tank - Google Patents

Abstract

PURPOSE:To reduce combined heat loss in the tank efficiently and increase the ratio of effective heat accumulating capacity with respect to the volume of the tank as much as possible by a method wherein the supplying and discharging pipes for high-temperature heat medium liquid are opened in the upper partition of a supplying and discharging section while the supplying and discharging pipes for low-temperature heat medium liquid are opened in the lower partition of the supplying and discharging section. CONSTITUTION:High-temperature heat medium liquid is supplied into and discharged from the upper layer of a storing section 2 through a heat medium liquid flow path 6 in the condition of horizontal laminar flow while the low-temperature heat medium liquid is supplied into and discharged from the lower layer of the storing section 2 through the heat medium liquid path 7 in the condition of horizontal laminar flow respectively, whereby the formation and maintaining of the layered condition of temperature in the storing section 2 are contrived under preventing the mixing of stored heat medium liquid by the mixing effect accompanied by the discharging of the heat medium liquid from heat medium liquid supplying and discharging pipelines 8A, 8B. The flow paths 6, 7 are formed at the upper end rim side and the lower end rim side of the same upright wall 4 whereby the flow direction of the heat medium liquid, supplied and discharged through the flow paths 6, 7, intersects orthogonally with the shortest shortcircuiting direction of both flow paths 6, 7 and the diagonal shortcircuit flow of the heat medium may be avoided.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a heat storage tank for air conditioning.

[Conventional technology]

Conventionally, hollow weir type and improved hollow weir type heat storage tanks have been put into practical use as heat storage tanks for air conditioning that suppress heat loss due to mixing of high temperature storage heat transfer liquid and low temperature storage heat transfer liquid in the tank and improve heat storage efficiency. However, while those types of @thermal tanks are equipped with a heat medium liquid storage part consisting of a meandering flow path, the heat medium liquid storage part is simply formed without forming a meandering flow path. In a relatively simple type of heat storage tank formed with a box-shaped chamber, the storage state of the heat medium liquid in the box-shaped heat medium liquid storage section is brought into a temperature stratified state by means such as ``Combination or F'' below. try to get closer,
This was intended to reduce mixing heat loss within the tank.

((a) As shown in Fig. 5, the heat medium liquid supply pipes (8A) and (8B) are inserted directly into the heat medium liquid storage section (2).
Of these, the high temperature heat medium liquid supply/discharge pipe (8A) is opened at the upper part of the fit's liquid storage section (2), and the low temperature heat medium liquid supply/discharge pipe (8B) is opened for the heat medium liquid. It is opened at the lower layer of the reservoir (2).

K, as shown in Figure 6, the first
The vertical wall (4A) forms a supply/discharge section (8A) for high-temperature heat medium liquid, and on the other side of the tank, a second vertical wall (4B) forms a low-density semi-medium liquid supply/discharge section (8B). The first vertical wall (
4A) A gap-shaped high-temperature heat transfer liquid flow path (6) formed to be located between the upper end line and the liquid level of the heat transfer liquid stored in the tank.
The low-temperature heat medium liquid is supplied to the storage part (2) in a horizontal laminar flow in the upper layer of the storage part (2) through 82
A gap formed between the lower end of the vertical wall (48) and the bottom wall of the tank! The same horizontal laminar flow is carried out in the lower part of the storage section (2) through the flow path (7) for heat medium liquid. (I cannot point to any literature.) [Problem that the invention seeks to solve].

However, in the above-mentioned method (a), the stored heat medium liquid is violently agitated due to the stirring action accompanying the discharge of the heat medium liquid from the heat medium liquid supply and discharge pipes ('8A), 1'8B). Furthermore, it has been virtually impossible to form and maintain a temperature stratification state in the stored heat transfer fluid, and the objective of reducing mixing heat loss has hardly been achieved.

In addition, in the above-mentioned means (-), the supply pipes (8A) and (8B
) Although it is possible to avoid stirring the stored fN heat medium liquid due to the stirring action accompanying discharge from the first vertical wall (4A),
The high temperature 21 liquid flow path (6) formed on the upper vertical side and the low temperature heat transfer liquid flow path (7) formed on the lower edge side of the second vertical wall (4B) on the other side form a box-shaped heat transfer path. Medium storage part (2)
If the heating medium liquid is located at a diagonal position, the stored heating medium liquid will short-circuit and flow diagonally across both flow paths (6) and (7) as the heating medium liquid is supplied and discharged. There is still a problem that considerable mixing heat loss occurs because the temperature stratification state of the stored heat medium liquid is disturbed by the short-circuit flow, and in addition, the box-shaped heat medium liquid storage part (2) is caused by the diagonal short-circuit flow. There was also a problem that the effective heat storage capacity became small in proportion to the tank volume because dead water retention of the heat medium occurred in the other diagonal portions (a) and (b) of the tank.

An object of the present invention is to effectively reduce in-tank mixing heat loss by rationally forming a piP medium liquid supply/discharge part to a box-shaped heat medium liquid storage part that does not have a meandering flow path. At the same time,
The key is to minimize the ratio of effective heat storage capacity to tank volume.

[Means for solving problems]

The characteristic structure of the heat storage tank according to the present invention is that a vertical wall is provided to partition the inside of the tank into a heat medium liquid storage section and a heat medium liquid supply/discharge section, a horizontal wall is provided that partitions the abovementioned supply/discharge section into a lower part, and the above-mentioned storage section and the A heat medium liquid flow path communicating with the upper partition portion of the supply/discharge section is formed to be located between the upper end line of the vertical wall and the liquid level of the stored heat medium liquid, and the lower edge of the vertical wall and the tank A heat medium liquid flow path is formed between the storage part and the lower partition part of the supply/discharge part, and a high temperature heat medium liquid supply conduit is connected to the supply/discharge part. The functions and effects of the supply and discharge pipes for the low temperature heat medium liquid are opened in the upper partition part and in the lower partition part of the supply and discharge part, respectively.

[For production]

In other words, as shown in FIG. 1 or FIG.
) A horizontal laminar flow is generated in the upper part of the storage part (2) through a gap-shaped heat medium liquid flow path (6) formed so as to be located between the upper end line of the tank and the liquid level of the heat medium liquid stored in the tank. and the storage part (2
) is supplied to the storage section (2 ), the heat medium liquid supply and discharge pipes (8A
), while preventing the stored heat medium liquid from being agitated by the stirring action accompanying the heat medium liquid discharge from (, 8B).
The aim is to form and maintain a temperature stratified state in the box-shaped heat medium liquid storage part (2), and the high temperature heat medium liquid flow path (6) and the low temperature heat medium liquid flow path (6), in which the heat medium liquid is supplied and discharged in a horizontal laminar flow manner, are intended to be formed and maintained. Flow path for heat medium liquid (7
) are formed on the upper end line side and the lower end edge side of the same vertical wall (4), each heat medium liquid flow path (6).

(7) The flow direction of the heat transfer liquid supplied and discharged through (horizontal direction) and the direction that shortens the liquid flow paths (6) and (7) in the shortest way (direction along the vertical wall (4)) Since they are perpendicular to each other, it is possible to avoid the diagonal short-circuit flow of the heat medium liquid as described above, which is caused by the two heat medium liquid flow paths being located at diagonal positions of the Hakobushi liquid storage part. The flow state of the heat medium liquid within the box-shaped liquid storage portion (2) accompanying the supply and discharge of the heat medium liquid can be brought close to the vertical piston flow state that is optimal for forming and maintaining a temperature stratified state.

〔Effect of the invention〕

As a result of the above, it is possible to effectively reduce the heat loss due to the mixing of the high-temperature stored heat medium liquid and the low-temperature stored P8IIX liquid in the tank, and it is possible to effectively reduce the heat loss even though the heat medium liquid storage part is formed in a simple box shape. Efficiency can be greatly improved, and dead water retention of the heat medium caused by short-circuit flow within the storage section can be avoided, so the effective heat storage capacity can be increased by 90% compared to the storage volume, even though it is compact. It has a large effective heat storage capacity, and as a whole, the heat tank is excellent in terms of economical efficiency in terms of heat balance, economical efficiency in terms of equipment costs, and ease of installation.

〔Example〕

Next, an embodiment of the present invention will be described based on FIGS. 1 and 2.

For cold water for air conditioning consisting of a box-shaped concrete structure! ! (
1), a vertical wall (4) that partitions the internal space into a cold water storage section (2) and a cold water supply/discharge section (3) for the cold water storage section (2) is installed inside the tank near one side of the tank and extends into the tank. The cold water supply/discharge section (3) thus formed is partitioned into approximately two equal parts vertically by a horizontal wall (5) extending between the vertical wall (4) and the side wall of the tank.

Then, the upper partition part (
8A), a gap-like high-temperature cold water flow path (6) communicating with
is formed throughout the tank in a state where it is located between the upper end line of the vertical wall (4) and the liquid level of the cold water stored in the tank, and
Between the lower edge of the vertical M (4) and the bottom wall of the tank.

A gap-like low-temperature cold water flow path (7) is formed throughout the tank, communicating the storage part (2) and the lower partition part (8B) of the supply/discharge part, and also Among the cold water circulation pipes connected to the air conditioner, the high temperature side pipe (8A) is placed in the upper partition part (8A) of the supply/discharge part (3), and the low temperature side pipe (8B) is placed in the supply/discharge part (3). ) are respectively opened within the lower partition portion (8B).

In other words, high-temperature cold water is supplied and discharged to and from the storage section (2) in a horizontal laminar flow manner in the upper layer of the storage section (2) via the gap-like high-temperature cold water flow path (6), and The low-temperature cold water is supplied to and discharged from the storage part (2) through a gap-shaped low-temperature cold water flow path (7) located vertically below the high-temperature cold water flow path (6) and opening in the same direction. ), the flow state of the stored cold water in the storage part (2) as the cold water is supplied and discharged is made into a vertical piston flow state, and thereby, The cold water storage state in the storage section (2) is maintained in a favorable temperature stratification state with extremely low mixing loss.

Note that the arrows in the figure indicate 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. In the heat storage consumption operation state, the high-temperature cold water is taken from the load side air conditioner to the load side air conditioner and returned from the load side air conditioner to the tank (1), the arrows are all reversed. As shown in FIG. The supply/discharge part (3) formed between ) is partitioned into upper and lower parts by a horizontal wall (5). The flow path (6) for cold water is located between the upper end line of each vertical wall (4) and the liquid level of the cold water stored in the tank, and the supply/discharge part (
3) Gap-like low-temperature cold water flow paths (7) communicating between the lower partition portion (8B) and the storage portion (2) are formed between the lower edge of each vertical wall (4) and the bottom wall of the tank. In the wall structure, the high-temperature cold water supply/discharge pipe (8A) is placed in the upper partition part (8A) of the supply/discharge section (3), and the low-temperature cold water supply/discharge pipe (8B)
may be configured to open in the 'F @ partition part (8B) of the supply/discharge part, and this separate actual flow side configuration has a structure in which the storage part (
It is suitable when the volume of 2) is large.

As the storage target, various heat medium liquids can be stored, such as cold water for air conditioning, hot water for heating, or heat medium liquids made by adding various chemicals to these hydrothermal mediums.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view, and FIG. 2 is a sectional view taken along the line ff-ff in FIG. 1. FIGS. 5 and 6 are longitudinal sectional views showing conventional structures, respectively. (1)......turret, (2)......reservoir, (
3)... Supply/discharge section, (8A)... Upper partition part, (8B)... Lower partition part. (4)・・・Standing wall, (5)・・・Side wall, (
6), (7)...Flow path, (8A)...
...High temperature pp! Supply/discharge pipe connection for liquid medium, (8B)...
・Supply/discharge pipe for low-temperature heat transfer fluid.

Claims (1)

[Claims] Inside the tank (1), there is a heat medium liquid storage part (2) and a heat medium liquid supply/discharge part (3).
A vertical wall (4) is provided to partition the supply and discharge part (3) into an upper and a lower part, and a horizontal wall (5) is provided to partition the supply and discharge part (3) into upper and lower parts. A heat medium liquid flow path (6) communicating with the vertical wall (4) is formed so as to be located between the upper end line of the vertical wall (4) and the liquid level of the stored thermal medium liquid, and the vertical wall (4)
) between the lower edge of the tank (1) and the bottom wall of the tank (1), a heat medium liquid flow path ( 7), and the high temperature heat transfer fluid supply/discharge pipe (8A) is connected to the upper partition part (3) of the supply/discharge section (3).
A), and a heat storage tank in which low-temperature heat transfer fluid supply/discharge pipes (8B) are opened to the lower partition portion (3B) of the supply/discharge section (3).