JPS58129193A - Heat accumulating member - Google Patents

Abstract

PURPOSE:To improve the heat accumulating efficiency of a heat accumulating member by a method wherein the heat accumulating member is formed of a capsule made of a metallic mesh and filled with an inorganic salt. CONSTITUTION:When a heat medium is circulated through a heating pipe 6, methanol 7 in a storage tank 8 is heated to vaporize and the vaporized methanol is supplied to a heat accumulation tank 4 through a communication pipe 10. In this case, the vaporized methanol passes among, and diffused into, a plurality of the heat accumulating members 1 in the tank 4 through the meshes of the heat accumulating members and adsorbed by the surface of calcium chloride filled into the members 1 to thereby generate heat. The heat thus generated is then transferred to a heat transfer pipe 5 through which water circulates. As the capsule forming each of the heat accumulating members 1 is made of the metallic mesh, it excels in heat transfer property so that the heat exchange between the capsule and the calcium chloride filled therein is promoted. Further, as the methanol passes among the capsules and among the meshes of the capsules, it is diffused speedily and the adsorption and separation of the methanol are made uniformly and quickly over the entire surface of the calcium chloride filled into the capsules.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a heat storage material that is useful for recovering thermal energy O, and particularly relates to an improved filling structure of the heat storage material.

[Technical background of the invention and its problems]

Conventionally, one stone of water and inorganic salts are generally used as the heat storage material for heat storage devices, but in one-heat type heat storage devices that use one stone of water as the heat storage material, the amount of heat during storage of thermal energy is To avoid radiation, it is necessary to round and insulate the mat.
9. It is difficult to store thermal energy for a long time.
It is.

On the other hand, storage of thermal energy in a heat storage material by inorganic salts that adsorb fJ or vapor and generate heat or absorb heat due to the combined energy of the inorganic salts is achieved by disconnecting the inorganic salts from the adsorbate gas or vapor. This has the advantage that thermal energy can be stored semi-permanently.

However, since inorganic salts have low thermal conductivity, the speed of heat transfer when heat is input to or output from the heat storage device is slow, and thermal energy cannot be used efficiently. is used by filling a thermal storage tank with a heat exchanger, but as the amount of filling increases, the speed at which adsorbent I-Sya vapor diffuses within the inorganic salts slows down, and the contact area with the inorganic salts decreases. There were drawbacks such as the inorganic salts being filled were not being utilized effectively and the heat storage efficiency was decreasing.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned conventional drawbacks, and is based on gold mW.
Inorganic salts are filled into a capsule made of MEC to increase the transfer speed of heat within the inorganic salts, and to increase the diffusion speed f# of vapor in the adsorbate gas to uniformly transfer heat in and out. It is an object of the present invention to provide a heat storage body whose heat storage efficiency can be improved quickly and efficiently.

[Summary of the invention]

The heat storage body of the present invention is made of metal MEC! The cell is filled with inorganic salts.

The metal mesh forming the capsule may be made of materials with high thermal conductivity such as steel, aluminum, and stainless steel, but steel and stainless steel are particularly preferred. Also, metal mesh 7. It is necessary to select a mesh that does not allow inorganic salts to pass through the mesh of MEC, but if the value of MEC is too large and too fine, it will prevent the vapor O from passing through the adsorbate gas. 100 metsushi.

The following is Suitoku. The inorganic salts are dispersed in the gas deposited in the inorganic salts filled in the capsule! l1lK@ does not interfere with the loading and is determined based on the amount of inorganic salts to be filled and the mechanical strength of the capsule that supports it. [Power to the power! The shape of the cell may be irregular, such as rectangular or spherical.

The force f (inorganic salts filled in the chamber as a heat storage material include adsorbent gases and steam such as water vapor and methanol vapor)
Madanesium chloride (Mg
('42 Calcium chloride (CaCjz), etc.) In addition, when selecting these inorganic salts, O has a phase change point at a temperature suitable for each heat utilization system, and the calorific value of Li It is preferable to choose the meeting.

The heat storage body configured in this way is made of metal.

The power formed by shi! Since the cells are filled with inorganic salts, they have excellent thermal conductivity and promote heat exchange with the inorganic salts. *The mesh of the metal shell that forms the capsule and the capsule is rounded and forms a passageway for gas and steam, and diffusion is fast, allowing the vapor in the gas to flow uniformly and quickly over the entire inorganic salt. adsorption and desorption effects are carried out.

[Embodiments of the invention]

Figures 1 and 2 show the embodiment of the present invention, in which the heat storage body 1 is a cube of 20 cm on each side made of stainless steel 11050 mesh! Calcium chloride 1 in cell 2
40.

This heat storage body 1 is filled into a heat storage tank 4 of a heat storage device shown in FIG. 2 so that the total amount of calcium chloride 1 becomes 1-. The heat storage device includes a heat storage tank 4 filled with a heat storage body 1, which is drawn in from the outside and uses a heat exchanger tube 1, and a heat tank 4 which is drawn in from the outside and stores methanol 1 therein. 1 and
It consists of a communicating pipe 1- which extends between these two tanks and has a condenser t installed in the middle.

First, to explain the exothermic effect, when a 30°C heat medium is passed through the heating tube I, the methanol 1 in the storage tank 1 is heated and evaporated, and this methanol vapor passes through the communication pipe 10 and enters the heat storage tank 4. Supplied. The supplied methanol vapor passes through the heat storage body 1 and diffuses into the interior of the capsule 2, filling it with calcium nonachloride at>*
It sticks to surfaces and generates heat. This heat is 20℃O water is 1001
The water was transferred to the heat exchanger tube 5 which was circulated at 00d1 to perform heat exchange and heat the water. In this case, when we investigated the change in the water O heating temperature during the mountain pass, we found that it came to be shown by curve a in the third EO group I)7.

Next, to explain the action during heat storage, 12
In order to heat the heat storage body 1 by circulating a heat medium at 0° C., the calcium chloride 3 in the heat storage body 1 is heated, and the adsorbed methanol 1 is evaporated and desorbed. The desorbed methanol vapor is condensed in the condenser 9 through the communication pipe 1 and stored in the storage tank aK again.

In the case of ξO, the graph in Figure 4 shows the change over time of the residual amount of methanol adsorbed on calcium chloride (weight of Calcium chloride + methanol) after the start of heat storage. Klk Riku as shown in a.

As a ninth comparison with the present invention, a conventional heat storage stirrup in which the total amount of calcium chloride 1 was not filled into the capsule 2 but into the heat storage tank 4 was used, and the same as in the above embodiment was used. The change in 0 water oii* during heat generation was investigated, and the temperature after 70M was shown in Da 27 in Figure 3 with koji matte. We also investigated the residual amount of methanol during heat storage and found that it was III! The graph of 41iC now shows the song 41b.

〔Effect of the invention〕

As explained above, according to the heat storage body according to the present invention, there is no gold.
The cuff consisting of 11 meshes is filled with inorganic salts to increase the Ct*O movement within the inorganic salts, and also to reduce the diffusion rate of vapor in the adsorbent gas, thereby reducing heat. The heat storage efficiency can be improved by quickly and efficiently, and the heat transfer metal cag cells that perform heat exchange with the heat storage body are rounded and have electric fins that act as fins. Using a straight tube instead of a tortoise tube has significant advantages, such as making the device faster and cheaper.

41ElliiO Brief explanation@1 Figure 1 is a partially cutaway perspective view of a heat storage body according to an embodiment of the present invention, Figure 2 is a sectional view of a heat storage device using the heat storage body shown in Figure 11, and Figure 3 is a cross-sectional view of a heat storage device using the heat storage body shown in Figure 11. A graph showing changes in the water outlet device over time during heat generation, llll4E is a graph showing changes in the amount of methanol remaining over time during heat storage.

1- Heat storage body, 2... Power! Cell, 1... Calcium chloride, 4... Heat storage tank, 5... Heat exchanger tube, 6... Heating tube, r-methanol, 8... Storage tank, 9... Condenser, 10 ...Communication pipe.

Applicant's agent Patent attorney Hikoko Suzue Takeshi Q. Higashi Tsune tuyere ρ

Claims (2)

[Claims] (1) In the force f-, which consists of metal metal,
1. A heat storage body characterized by being filled with an inorganic salt that adsorbs gas or vapor and generates heat or absorbs heat. (2) The heat storage body according to claim 1, wherein the capsule is formed of a metal mesh having high thermal conductivity such as copper, aluminum, or stainless steel.