JPH03110331A - Heat storage device - Google Patents

Abstract

PURPOSE:To enable reduction of a running cost by a method wherein, based on the detection result of a body for detecting the interval between adjacent latent heat storage bodies, the phase change state of each latent heat storage body in a heat storage tank is grasped. CONSTITUTION:A pair of right and a left moving bodies 3 for detection are supported slidably in the axial direction of a float preventing stay 2. A detecting body 19 comprises first swing arms 6 following movement of the moving bodies 3 for detection, a second swing arm 9 connected to a rack pinion 8 for driving a rotation detecting sensor 7, and a link mechanism 18 coupled to two swing arms 6 and 9. Thus, when a latent heat storage body 1 is expanded by a change in a phase, the moving body 3 for detecting is moved. Frames for supporting a rack 8A and a pinion 8B are moved in the reverse direction to each other, and the interval L between adjacent latent heat storage bodies 1 and 1 can be taken out as a rotation angle. The rotation angle is outputted to a control means 20, and a control mode in which a heat pump and a heating medium fluid circulating pump are stopped can be employed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flexible container in which a plurality of latent heat storage materials are arranged side by side in a heat storage tank, or a plurality of latent heat storage materials are enclosed in a flexible container. A heat storage device is provided with a plurality of heat storage tanks in which the latent heat storage body is stored overnight, and more specifically, the heat storage device and a heat pump are used together, and the heat pump is operated using nighttime electricity to cool the heat storage body. The present invention relates to a heat storage device that stores heat and can reduce the total running cost by operating the heat storage device alone or by operating the heat storage device and a heat pump simultaneously for daytime air conditioning loads, compared to operating only the heat pump.

[Conventional technology]

In this type of heat storage device, when performing heat storage, it is important to know how much heat has been stored in the heat storage body, and conversely, when using heat storage, it is important to know how much heat storage remains. This is an important requirement for accurately controlling operations such as when stopping operations.

Therefore, as a device to know the remaining amount of heat storage, for example,
In No. 3-239292, the present applicants proposed a heat storage device that detects the total amount of expansion in the juxtaposition direction of a group of latent heat storage bodies whose volume expands due to a phase change to determine the remaining amount of heat storage.

[Problem to be solved by the invention]

However, the heat storage and heat dissipation rates of the latent heat storage bodies are not constant for each latent heat storage body due to drifting and speed fluctuations of the heat medium fluid. Moreover, it is impossible to eliminate individual differences between latent heat storage bodies, such as the amount of expansion slightly differing even if the amount of stored heat is the same depending on the flexibility of the container.

Therefore, if the sensor is set to detect the total expansion amount when all the latent heat storage bodies have completely expanded to the desired state, the latent heat storage body that has undergone the specified expansion before the sensor detects the expansion will be Heat exchange is wasted, and
If the total expansion amount is set small, some percentage of the total latent heat storage body may not be able to store sufficient heat.
In any case, it is difficult to set the detection timing of the sensor in consideration of such individual differences in heat storage rate.

An object of the present invention is to solve the conventional problems and to find a latent heat storage body with poor heat storage efficiency.

[Means to solve the problem]

The characteristic structure according to the present invention is that a detecting body is provided for detecting the distance between adjacent latent heat storage bodies, and the latent heat storage body expands and contracts in accordance with the volumetric expansion and contraction of the latent heat storage material that changes phase. There is provided a means for grasping the phase change state of each latent heat storage body in the heat storage tank based on the detection result of the detection body with respect to a change in the adjacent spacing, and its effects are as follows.

[For production]

In other words, when the body expands or contracts and the distance between adjacent latent heat storage bodies reaches a predetermined standard interval, the detection body senses it, indicating that the latent heat storage body has reached a predetermined amount of heat storage or heat release. .

〔Effect of the invention〕

As a result, since the amount of expansion, etc. is measured for two adjacent latent heat storage bodies, it is possible to determine the amount of expansion with less influence of individual differences compared to conventional detection structures, and it is possible to measure the amount of expansion between two adjacent latent heat storage bodies. It is also possible to provide a detection body for all of the latent heat storage body groups within, and it is possible to know the individual heat storage rate etc. in detail compared to the conventional detection structure.

For example, this makes it possible to grasp the degree of unbalanced flow of the heat transfer fluid, and it is also possible to take measures such as providing a rectifying mechanism or the like to correct the degree of unbalanced flow.

The heat storage efficiency of each latent heat storage body can also be detected, and improvements such as replacing those with particularly poor heat storage efficiency can be made.

Furthermore, the heat storage efficiency of the latent heat storage body in each heat storage tank can be determined for each heat storage tank. The detection object can be installed only in a limited manner.

〔Example〕

In Fig. 3, (10) indicates a heat storage tank of a heat storage device that stores the phase change of the latent heat storage material, specifically, the latent heat related to its solidification. a first heat storage tank (11) divided into four by a partition wall (17);
It consists of a second heat storage tank (12), a third heat storage tank (13), and a fourth heat storage tank (14). More specifically, the heat storage tank (
10) is a first heat storage tank (11) to which a heat medium fluid is supplied from a heat medium fluid supply port (15) and allows the heat medium fluid to flow inside; A second heat storage tank (in which the heat medium fluid wetting out is introduced and the heat medium fluid is made to flow inside)
12), a third heat storage tank (13) into which a heat medium fluid sent out after passing through the second heat storage tank (12) is introduced, and the third heat storage tank (13) allows the heat medium fluid to flow therethrough; (13) From a fourth heat storage tank (14) into which a heat medium fluid that flows through and wets out is introduced and is discharged from a heat medium fluid outlet (16) after passing through the heat medium fluid inside. The multi-tank (11),
In (12), (13), and (14), latent heat storage bodies (1) are housed and arranged in an aligned manner, respectively.

To describe the latent heat storage body (1) in detail, the latent heat storage body (1) is, as shown in FIG. A latent heat storage material is sealed together with air inside a plate-shaped container. The latent heat storage body (1) is a multi-tank (11) of the heat storage tank (10).

(12), (13), and (14) are arranged in tandem in multiple rows (two rows for each voltage detector), with a spacer (4) interposed in between. They are arranged in a stacked manner in multiple stages, and are housed in an aligned state.

Moreover, a protrusion (Ia) is provided on the side surface of each latent heat storage body (1). A fluid flow area is formed.

The latent heat storage bodies (1) thus arranged in an array are the latent heat storage bodies (1) located in the uppermost stage among them.
Various (11), (12), (13), (1
The buoyancy of the stays (2), which are allocated to each of the four floating stays (2), prevents them from floating due to their buoyancy. Note that (5) in Figure 3 is the heat storage tank (10)
This is a drop shelf placed in the top opening of the .

Next, a means for knowing the amount of heat stored in each latent heat storage body (1) will be explained.

As shown in FIG. 1, a pair of left and right detection movable bodies (3) are supported so as to be slidable in the axial direction of the floating stay (2), and the detection movable bodies (3)
a first swing arm (6) that swings following the movement of the rack and pinion (8) that drives the rotation detection sensor (7);
and a link mechanism (18) connecting the first swing arm (6) and the second swing arm (9) to detect the detection object (19). It is composed.

Therefore, when the latent heat storage body (1) expands due to a phase change, the detection moving body (3) moves, and accordingly, the frame supporting the rack (8A) and pinion (8B) moves in opposite directions. and the adjacent latent heat storage body (
1), (1) The adjacent spacing (L) between the two can be extracted as a rotation angle. A control form can be adopted in which this rotation angle is output to the control means (20) to stop a heat pump (not shown), a heat medium fluid circulation pump, or the like.

[Another example]

(2) The detection object (19) may be as follows.

■ As shown in Figure 4, the adjacent latent heat storage body (1),
(1) Arch-shaped flexible plate-like body (21) across the comrades
The two latent heat storage bodies (1
) decreases, the flexible plate-like body (2
1) into a higher arch shape, and the upper end of the flexible plate-like body (21) in a state where the latent heat storage body (1) has expanded to a predetermined amount of heat storage. The test needle-like body (22) is stretched at a height position corresponding to the position,
A configuration may be adopted in which an operator visually observes the heat storage body of each latent heat storage body (1) and makes the determination.

◎ As shown in Figure 5, each adjacent latent heat storage body (1)
, (1) Detachably attach the electrodes (23) and (23) to the shoulders, detect changes in capacitance, and connect both heat storage bodies (1).
, (1) may be configured to measure the proximity distance (L) and grasp the amount of heat storage. In the figure (24) is an electrode (23),
It is an integrated bellows type cover that covers (23).

O Each heat storage tank (1
A method may be adopted in which the expansion and contraction of the latent heat storage body (1) of 0) is recorded as an image and the recorded image is processed to determine the heat storage state.

■ As shown in Figure 1, the stay (2) holds the moving body (3) afloat.
A method is adopted in which the position of the moving body (3) is scanned by a laser scanning distance measuring device, the amount of movement after the phase change is detected, and the state of heat storage is ascertained. You can.

■ By measuring each latent heat storage body (1) as described above, it is possible to know the heat storage status of each heat storage tank (lO), and the information provided by the detection body (19) can be effectively utilized. .

(2) As a measurement method, the total latent heat storage body (1) may be the object of measurement, but a method may be adopted in which the measurement is performed on a new day for each heat storage tank (10).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the heat storage device according to the present invention, FIG. 1 is an overall configuration diagram for grasping the amount of heat storage, FIG. 2 is a perspective view showing a latent heat storage body, and FIG. 3 is a perspective view showing the overall configuration. FIGS. 4 and 5 are configuration diagrams showing other embodiments of the detection object, respectively. (1)...Latent heat storage body, (10)...
Heat storage tank, (19)... Detection object, (L)...
...Adjacent spacing.

Claims (1)

[Claims] A plurality of latent heat storage bodies (1) each containing a latent heat storage material enclosed in a flexible container are arranged side by side in a heat storage tank (10), or
In a heat storage device including a plurality of heat storage tanks (10) each having a plurality of latent heat storage bodies, the latent heat storage body (1)
A detecting body (19) is provided for detecting the adjacent spacing (L) between the two, and the adjacency is caused by the latent heat storage material (1) expanding and contracting following the volumetric expansion and contraction of the latent heat storage material undergoing phase change. The detection object (
19) A heat storage device comprising a means for grasping the phase change state of each latent heat storage body (1) in the heat storage tank (10) based on the detection result of the heat storage tank (10).