JP3089051B2 - Thermal storage tank equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a plurality of heat storage tanks for storing a heat medium in a state of a temperature gradient from one end of a tank to the other end of the tank. A high-temperature side pipe serving as a pipe is communicated with a high-temperature side end of each of the heat storage tanks, and a low-temperature side pipe serving as a delivery pipe or a return pipe of a low-temperature side heat transfer medium is connected to the low-temperature side of each of the heat storage tanks. The present invention relates to a heat storage tank facility connected to an end.

[0002]

2. Description of the Related Art Conventionally, in a heat storage tank facility as described above, as shown in FIG. 5, each heat storage tank is filled with a high-temperature side heat transfer medium in a pipe (ie, in a state where there is no free liquid surface). 1
The high-temperature side pipe line 2 which is sent out from the storage tank 1 or refluxed to each heat storage tank 1 is directly branched and connected to the high-temperature side end of each heat storage tank 1, and the low-temperature side heat transfer medium is similarly filled in the pipe line ( The low-temperature-side pipe line 3 that is sent from each heat storage tank 1 or returned to each heat storage tank 1 in a state where there is no free liquid level) is also directly branched and connected to the low-temperature side end of each heat storage tank 1.

[0003] Then, a flow regulating valve 14 and a flow meter 15 as necessary are interposed in the branch pipe portions of the respective pipe lines 2 and 3,
Thus, the high temperature side pipe 2 is used as a delivery pipe from each heat storage tank 1, and the low temperature side pipe 3 is used as a reflux pipe to each heat storage tank 1 so that the heat medium liquid flows into and out of each heat storage tank 1. Form, and
Conversely, the low temperature side pipe 3 is used as a delivery pipe from each heat storage tank 1, and the high temperature side pipe 2 is used as a return pipe to each heat storage tank 1 so that the heat medium liquid flows into and out of each heat storage tank 1. In any case, due to the above branch connection structure, there is a difference in the pipe transport pressure loss for each of the heat storage tanks 1 in each of the pipes 2 and 3, but by adjusting the flow rate adjusting valve 14, each heat storage The amount of the heat medium flowing into and out of the tank 1 was made uniform.

[0004]

However, in order to individually adjust a plurality of flow control valves 14, one heat storage tank 1 is required.
When the outflow / inflow amount to is adjusted by the flow control valve 14,
Since the amount of flow into and out of the other heat storage tanks 1 changes due to the influence, the flow rate adjusting operation for making the flow amount of the heat medium into and out of each heat storage tank 1 uniform is extremely complicated. There is a problem that it is extremely difficult to equalize the inflow and outflow with high accuracy.

[0005] Since the flow rate adjustment operation is difficult as described above, the amount of the heat medium flowing into and out of each heat storage tank 1 is likely to be uneven, and as a result, the heat storage and heat radiation characteristics of each heat storage tank 1 become uneven. There was a problem that the efficiency of using the heat storage tank as a whole was reduced.

An object of the present invention is to solve the above problem by making a rational improvement in the configuration of sending and refluxing the heat medium to each heat storage tank.

[0007]

A first characteristic configuration of the heat storage tank equipment according to the present invention is to provide a plurality of heat storage tanks for storing a heat transfer medium with a temperature gradient from one end of the tank to the other end of the tank. The high-temperature side pipe, which is a high-temperature side heat transfer medium delivery pipe or a reflux pipe, communicates with the high-temperature side end of each of the heat storage tanks, and serves as a low-temperature side heat transfer medium discharge pipe or reflux pipe. In the configuration in which the low-temperature side pipe communicates with the low-temperature side end of each of the heat storage tanks, the high-temperature side common liquid receiving tank communicates with the high-temperature side end of each of the heat storage tanks and stores the liquid in the tanks in a free liquid state. It provided with a communicates with the cold end of the heat storage tank, respectively, and, provided the low-temperature side common receiver tank for storing the bath solution inside the free liquid surface state, the hot
The side pipeline is connected to each of the heat storage tanks through the high-temperature side common liquid receiving tank.
Communicates with the high temperature side end, and connects the low temperature side pipe to the low temperature side.
Connected to the low-temperature end of each of the heat storage tanks through
The high-temperature side pipeline as a delivery pipeline,
When the low-temperature side line is a reflux line, the low-temperature side line
Each of the heat storage tanks from the side pipeline through the low-temperature side common liquid receiving tank
The low-temperature side heat transfer fluid is refluxed to the low-temperature side end of
From the high temperature side end of each heat storage tank through the high temperature side common liquid receiving tank
The high-temperature side heat transfer fluid is sent to the high-temperature side pipe line, or
The high temperature side line is a reflux line, and the low side line is
When a delivery line is used, the high-temperature side
High-temperature heat to the high-temperature end of each of the heat storage tanks through a common liquid receiving tank
The medium is refluxed, and the low-temperature end of each of the heat storage tanks
Low temperature to the low temperature side pipe through the low temperature side common liquid receiving tank
The configuration is such that the side heat transfer medium is discharged .

[0008]

In other words, in the above-mentioned first characteristic configuration, the high-temperature side common liquid receiving tank communicating with the high-temperature side end of each heat storage tank has a liquid in the tank (that is, a heat medium liquid to be sent to the high-temperature side pipe, or ,
Since the heating medium flowing from the high-temperature side pipe is stored in a free liquid state, the outflow and inflow pressure of the heating medium with respect to the high-temperature side end of each heat storage tank can be equalized in the high-temperature common receiving tank. .

Similarly, the low-temperature side common liquid receiving tank communicating with the low-temperature side end of each heat storage tank has a liquid in the tank (that is, a heat medium liquid to be sent to the low-temperature side pipe, or an inflow from the low-temperature side pipe). In this low-temperature side common liquid receiving tank, the outflow and inflow pressure of the heat medium liquid with respect to the low-temperature side end of each heat storage tank can be made uniform.

As a result, the high-temperature side pipe is used as a delivery pipe from each heat storage tank, and the low-temperature side pipe is used as a return pipe to each heat storage tank so that the heat transfer medium flows into and out of each heat storage tank. On the other hand, on the other hand, the low-temperature side pipe is used as a delivery pipe from each heat storage tank, and the high-temperature side pipe is used as a return pipe to each heat storage tank, so that the heat medium liquid flows into and out of each heat storage tank. In any case, the inflow and outflow amounts of the heat transfer fluid into and out of the heat storage tanks are made uniform by the above-mentioned outflow and inflow pressure equalizing functions of the high-temperature side common liquid receiving tank and the low-temperature side common liquid receiving tank, respectively.

[0011]

Therefore, according to the first characteristic configuration of the present invention, when the amount of inflow / outflow to one heat storage tank is adjusted by the flow control valve, the amount of outflow / inflow to another heat storage tank changes due to the effect. Under the above, the amount of the heat medium liquid flowing into and out of each heat storage tank can be made uniform with high accuracy while eliminating the need for complicated flow adjustment operations as in the past such as individually adjusting a plurality of flow adjustment valves. The flow rate control for the heat storage tanks can be greatly facilitated, and a high heat storage tank use efficiency can be stably secured with the heat storage and heat radiation characteristics of each heat storage tank being uniform.

[Second to Fourth Characteristic Configurations of the Present Invention] A second characteristic configuration of the heat storage tank equipment according to the present invention is that the high temperature side common liquid receiving tank is connected to the high temperature side end of each of the heat storage tanks via an overflow weir. Is to communicate with

That is, if this second characteristic configuration is adopted,
The delivery of the high-temperature side heat transfer fluid from the high-temperature side end of each heat storage tank, or the reflux of the high-temperature side heat transfer liquid to the high-temperature side end of each heat storage tank,
The upper end of the heat transfer fluid reservoir zone at the high temperature side ends of the heat storage tank, respectively (i.e., the highest temperature end of the heat transfer fluid temperature gradient in each storage tank) can be performed in, thereby, the heat storage efficiency of the storage tank Can improve.

A third characteristic configuration of the heat storage tank equipment according to the present invention is that the low-temperature side common liquid receiving tank communicates with the low-temperature side end of each of the heat storage tanks through a weir.

That is, if the third characteristic configuration is adopted,
The delivery of the low-temperature heat transfer fluid from the low-temperature end of each heat storage tank, or the reflux of the low-temperature heat transfer liquid to the low-temperature end of each heat storage tank,
This can be performed at the lower end of the heat transfer fluid storage area at the low-temperature side end of each heat storage tank (that is, at the lowest temperature end of the heat transfer fluid temperature gradient in each heat storage tank) , thereby reducing the heat storage efficiency of each heat storage tank. Can improve.

A fourth characteristic configuration of the heat storage tank equipment according to the present invention is that a resistance element for imparting a flow resistance to a liquid flow between the connection portion of the low-temperature side pipe and the underground weir in the low-temperature side common liquid receiving tank. Has been established.

In other words, in the implementation of the third characteristic configuration, if the fourth characteristic configuration is adopted, even if there is a slight difference in the flow resistance of the heat medium liquid in each of the submerged weirs for each of the heat storage tanks, With the flow resistance imparted by
Uniformity of the heat medium liquid inflow / outflow with respect to the low temperature side end of each heat storage tank can be more accurately achieved.

[0018]

Next, an embodiment will be described.

FIG. 1 shows the arrangement of a heat storage tank, in which a plurality of water tanks 1a, 1b, 1c are arranged in a line, and the water tanks 1a, 1b, 1c are connected in series to form a heat storage tank in a tank row. 1 and a plurality of heat storage tanks 1 having the same specifications and formed in the same manner.

In each of the heat storage tanks 1 in the row of tanks, the heat transfer liquid is stored in a state where there is a temperature gradient from one end to the other end in the row of tanks.
And Yes so as to store the cold or hot water W of, for each of the water tank 1a positioned on the high temperature side ends of the stored water temperature gradient in the bath the column direction in each storage tank 1, the high temperature-side cold or hot side A high-temperature side pipe 2 serving as a delivery pipe or a reflux pipe for the hot water W is connected to each of the water tanks 1c located at the low-temperature side end of the stored water temperature gradient in the tank row direction in each heat storage tank 1. Is connected to a low-temperature side pipe 3 serving as a delivery pipe or a return pipe for low-temperature side cold water or low-temperature side hot water W.

The specific tank structure of each heat storage tank 1 is shown in FIG.
As shown in FIG. 5, a high-temperature side wall 5 which is located on the high-temperature side of the stored water temperature gradient in the tank row direction and forms a communication passage 4 at a lower end portion.
And a low-temperature side wall 7 located on the low-temperature side and forming a communication path 6 at the upper end, constitutes a weir structure 8 for partitioning the tank, and this weir structure 8 is used as a partition between the adjacent water tanks 1a, 1b, and 1c. , The plurality of water tanks 1 a,
1b and 1c are formed.

As a mode of use for storing the cold water W in each heat storage tank 1, at the time of cold heat consumption in which the heat stored in each heat storage tank 1 is stored by the cold water storage, as shown in FIG. 1, the stored cold water W is taken out from each of the water tanks 1c located at the low temperature side end, and the taken out cold water W is supplied to a cold heat consuming device such as an air conditioner via the low temperature side pipeline 3, and the high temperature In the case of cold heat storage in which the high-temperature cold water W returned via the side pipe 2 is returned to each of the water tanks 1a located at the high-temperature side end of each heat storage tank 1, and cold heat is stored in each heat storage tank 1. As shown in FIG. 3, the stored water W is taken out of each of the water tanks 1a located at the high-temperature side end of each heat storage tank 1 in a flow direction opposite to that at the time of the cold heat consumption, and the taken-out water W is passed through the high-temperature pipe 2 To the refrigerator through the It is then returned to a more husband of the cooled cold return water tank 1c positioned cold water W in the cold end of the heat storage tank 1 through the low-temperature-side pipe 3 people.

On the other hand, as a usage form in the case where hot water W is stored in each heat storage tank 1, at the time of heat consumption in which the heat stored in each heat storage tank 1 by hot water storage is consumed, as shown in FIG.
The stored hot water W is taken out from each of the water tanks 1a located at the high-temperature side end of each heat storage tank 1, and the taken-out hot water W is supplied to a heat consuming device such as an air conditioner via the high-temperature side pipe 2, and the heat consumption thereof is increased. The hot water W returned from the apparatus via the low-temperature pipe 3 is returned to each of the water tanks 1c located at the low-temperature side end of each heat storage tank 1, and heat storage for storing heat in each heat storage tank 1 is also performed. At times, as shown in FIG. 2, the stored water W is taken out from each of the water tanks 1c located at the low-temperature side end of each heat storage tank 1 with the flow direction being opposite to that at the time of the heat consumption, and the taken-out water W is put on the low-temperature side. The high-temperature return hot water W heated by the heat source unit is supplied to the water tanks 1a located at the high-temperature side ends of the heat storage tanks 1 through the high-temperature side pipes 2 while being supplied to the heat source unit via the pipe line 3. It is.

[0024] That is, if you want to store the cold water W, and warm water
In any case where W is stored, each of the water tanks 1a, 1 is formed by the weir structure 8 in the above-described usage form.
The storage state of the cold water and the hot water W in each of b and 1c is maintained in a stratified state, and the adjacent water tanks 1a, 1b and 1 are maintained.
The stored water temperature at the lower end of the high-temperature side water tank and the stored water temperature at the upper end of the low-temperature side water tank are continuously set during the interval c. The stored water temperature gradient is maintained.

A water tank 1a located at the high temperature end of each heat storage tank 1.
And the high-temperature side pipe line 2 communicate with each of the water tanks 1a located at the high-temperature side end of each heat storage tank 1 via the overflow weir 9 of the same specification, and the water stored in the tanks. As a high-temperature side common liquid receiving tank that stores W in the free water state
The hot side common receiving tank 10,蓄at the high temperature end of the heat storage tank 1
Provided adjacent to the heat tank side-by-side group,
The high temperature side pipe 2 is connected to the high temperature side end of each heat storage tank 1 through the water tank 10.
Is connected to each of the water tanks 1a. On the other hand, with respect to the communication configuration between each of the water tanks 1c located at the low-temperature end side and the low-temperature side pipeline 3, the water tanks 1c located at the low-temperature side end of each heat storage tank 1 are connected to the respective water tanks 1c through the same weirs 11 having the same specifications. Low temperature that stores the water W inside the tank in a free water state
The low-temperature side common receiving tank 12 as a side common receiver tank, each heat storage
The low-temperature side pipe 3 is connected to the low-temperature end side of the tank 1 so as to be adjacent to the group of juxtaposed heat storage tanks.
Communicate with each of the water tanks 1c located at the low temperature end of each heat storage tank 1.
Let me do it.

That is, in the above-mentioned usage mode, when the cold heat is consumed and when the hot heat is stored, as shown in FIG. 2, the high-temperature side cold water or hot water W returning via the high-temperature side pipe 2 is received by the high-temperature side common water. After flowing into the water tank 10, the water flows from the high-temperature side common water receiving tank 10 to each of the water tanks 1a located at the high-temperature side end of each heat storage tank 1 through the overflow weir 9 by overflowing. The low-temperature stored cold water and the stored hot water W are flowed from each of the water tanks 1c located at the low-temperature side end into the low-temperature common water receiving tank 12 through the undercut weir 11, and then the low-temperature common water tank 12 is discharged. To the low-temperature side pipeline 3.

In addition, in the above-mentioned use mode, when storing cold heat and consuming hot heat, as shown in FIG. 3 described above, cold water or hot water W on the low-temperature side returning via the low-temperature pipe 3 is supplied to the low-temperature common receiving port. after having flowed into the water tank 12, caused to flow from the low temperature side common receiving tank 12 via a submerged weir 11 into each of the tank 11c located on the cold end of the heat storage tank 1, with it, the hot side of the heat storage tank 1 the reservoir of cold water and stored hot water W from each of the high-temperature side of the tank 1a located at the end, after allowed to flow into the high temperature side common receiving tank 10 via an overflow weir 9, the high temperature side common receiving
It is made to flow out of the water tank 10 to the high-temperature side pipeline 2.

In each of the heat storage tank 1, the cold and hot water flows in and out of the heat storage tank and the hot and cold heat storage, and the cold and hot water inflow and outflow of the cold heat storage and the hot heat consumption, respectively.
High-temperature common water receiving water stored in the tank in a free water state
The cold / hot water W flows into and out of each of the high-temperature side end water tanks 1a of each heat storage tank 1 through the tank 10, and the low-temperature common water receiving tank 12 stores the water W in the tank in a free water state. The cold and hot water W flows into and out of each of the low temperature side water tanks 1c of the heat storage tank 1 so that the amount of cold and hot water flowing into and out of each heat storage tank 1 is made uniform.

As shown in FIG. 4, the overflow weir 9 has an upper edge formed in a saw-tooth shape over the entire length, so that the upper edge of the overflow weir 9 can be formed simply linearly over the entire length. In comparison, the non-uniformity of the overflow amount distribution due to the manufacturing error is prevented, and the amount of cold and hot water flowing into and out of each of the high-temperature side end water tanks 1a of each heat storage tank 1 can be made more uniform.

On the other hand, in the low-temperature side common water receiving tank 12, a porous body as a resistor for imparting a flow resistance to the flow of cold / hot water flowing between the connecting portion of the low-temperature side pipe line 3 and the boring weir 11 for each heat storage tank 1. A plate 13 is stretched, so that even if there is a slight flow resistance difference due to a manufacturing error or the like in each of the moat weirs 11, each heat storage tank 1 is kept in a state where the influence due to the flow resistance difference is suppressed. The amount of cold and hot water flowing into and out of each of the low-temperature side water tanks 1c can be accurately and uniformly set.

In connecting the high-temperature side pipe 2 and the low-temperature side pipe 3 to the high-temperature side common water receiving tank 10 and the low-temperature side common water receiving tank 12, each of the pipes 2 and 3 is branched into a plurality. , be connected to one them branch conduit to the common receiving tank 10, 12 in a dispersed state in the thermal storage tank arrangement direction, whereby, in the heat storage tank arrangement direction in the reservoir water level in each of the common water tank 10, 12 By preventing a water level difference from occurring, the amount of cold and hot water flowing into and out of each of the high-temperature end water tanks 1a and each of the low-temperature end water tanks 1c of each heat storage tank 1 can be even more accurately uniformed.

In the figure, reference numerals 14 denote flow control valves, respectively.

Another Embodiment Next, another embodiment will be described.

The heat storage tank 1 includes a plurality of water tanks 1 as in the above embodiment.
It is not limited to a tank row in which a, 1b, and 1c are communicated in series, but may be a single water tank.

The communication structure between each high-temperature side end of each heat storage tank 1 and the high-temperature side common liquid receiving tank 10 includes an overflow weir 9.
However, the present invention is not limited to this, and various configurations can be changed, for example, adopting a configuration in which communication is performed below the level of the stored liquid.

The communication between the low-temperature side end of each heat storage tank 1 and the low-temperature common liquid receiving tank 12 is also similar to
However, the present invention is not limited to this, and various configurations can be changed, for example, adopting a configuration in which communication is performed only in the middle layer of the stored liquid level.

In the above-described embodiment, each of the high-temperature side pipe 2 and the low-temperature side pipe 3 is also used as a consuming side pipe for a cold or hot consuming device and a heat source side pipe for a refrigerator or a heat source. However, separate high-temperature side pipes 2 and low-temperature side pipes 3 may be provided on the consumer side and the heat source side. High-temperature side common receiving tank 10,
Each of the low-temperature side common liquid receiving tanks 12 may be a closed tank as long as the liquid W in the tank is stored in a free liquid state.

The heating medium liquid W is not limited to cold water or hot water, but may be a liquid other than water.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a plan view showing an arrangement configuration of a heat storage tank.

FIG. 2 is a longitudinal sectional view showing a flow form at the time of cold heat consumption and hot heat storage.

FIG. 3 is a vertical cross-sectional view showing a flow form during cold heat storage and hot heat consumption.

FIG. 4 is a diagram showing an upper edge structure of an overflow weir.

FIG. 5 is a plan view showing a conventional configuration.

[Explanation of symbols]

 W Heat medium liquid 1 Heat storage tank 2 High temperature side pipe line 3 Low temperature side pipe line 9 Overflow weir 10 High temperature side common liquid receiving tank 11 Mole weir 12 Low temperature side common liquid receiving tank 13 Resistor

Claims (4)

(57) [Claims] 1. A plurality of heat storage tanks (1) for storing a heat medium liquid (W) in a state where there is a temperature gradient from one end of the tank to the other end of the tank, and a delivery pipe for the high-temperature heat medium liquid (W). A high-temperature side pipe (2) to be a channel or a reflux pipe is communicated with each high-temperature side end of the heat storage tank (1), and is a delivery pipe or a reflux pipe for the low-temperature side heat transfer fluid (W). Heat storage tank equipment in which a low temperature side pipe (3) communicates with each of the heat storage tanks (1) at a low temperature side end, wherein the heat storage tank (1) communicates with each of the high temperature side ends, and a liquid in the tank. A high-temperature side common liquid receiving tank (10) for storing (W) in a free liquid state is provided, and the heat storage tank (1) communicates with each low-temperature side end, and the liquid (W) in the tank is free liquid. A low-temperature side common liquid receiving tank (12) for storing in a surface state is provided, and the high-temperature side pipe line (2) is connected to the high-temperature side common liquid receiving tank (10).
Through the heat storage tank (1) to the high-temperature end of each
The low temperature side pipe (3) is connected to the low temperature side common liquid receiving tank (1).
2) to communicate with each of the heat storage tanks (1) at the low temperature side end.
The high-temperature side line (2) as a delivery line,
And when the said low temperature side pipe | tube (3) is used as a reflux pipe | tube,
From the low temperature side pipe (3) to the low temperature side common liquid receiving tank (1)
2) through the heat storage tank (1) to the low-temperature end of each low-temperature side
The medium (W) is refluxed, and the heat storage tank (1)
From each high temperature side end through the high temperature side common liquid receiving tank (10)
The high temperature side heat transfer fluid (W) is sent out to the high temperature side pipe (2).
That, or, the hot side conduit (2) and return line, and, prior to
When the low-temperature side line (3) is used as the delivery line,
From the side line (2) through the high temperature side common liquid receiving tank (10)
High-temperature side heat transfer fluid (W) to each high-temperature side end of the heat storage tank (1)
At the low temperature side of each of the heat storage tanks (1).
From the end through the low-temperature side common liquid receiving tank (12) to the low-temperature side
The low temperature side heat transfer fluid (W) is sent to the pipe (3).
Thermal storage tank facility at Te. 2. The heat storage tank equipment according to claim 1, wherein the high temperature side common liquid receiving tank (10) communicates with each of the heat storage tanks (1) at a high temperature side end via an overflow weir (9). . 3. The heat storage according to claim 1, wherein the low-temperature side common liquid receiving tank (12) communicates with the low-temperature side end of each of the heat storage tanks (1) through a weir (11). Tank equipment. 4. A resistor (13) for imparting a flow resistance to a liquid flow in the low-temperature side common liquid receiving tank (12) between the connection part of the low-temperature side pipe (3) and the digging weir (11). 4. The heat storage tank equipment according to claim 3, further comprising: