JPH0650687A - Heat accumulator - Google Patents

Abstract

PURPOSE:To improve a heat generating efficiency by forming a second storage unit by holding a second heat storage substance between an outer periphery of a pipe member and a gas permeable member, and supplying gaseous first heat storage substance to an outer periphery of a gas permeable member in a housing in connection with a first storage unit for storing liquid first heat storage substance. CONSTITUTION:When a fluid 17 flows through a pipe 21 in a first storage unit 11, liquidlike first heat storage substance 15 in a vacuum, low pressure state space 23 is easily boiled to become gaseous state to be advanced from a tube 14 to a space 43 of a second storage unit 12. When gaseous first heat storage substance 15 starts to flow on outer peripheries of gas permeable members 40-42, second heat storage substance 18 is adsorbed to and bonded to the substance 15 to cause exothermic reaction. Here, since fins 37-39 connect outer peripheries of tubular parts 31-33 to inner peripheries of the members 40-42, heat is efficiently transferred to the members 31-33 to heat fluid 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage device.

[0002]

2. Description of the Related Art As a prior art relating to the present invention, there is "evaporation / condensation device and energy system" disclosed in, for example, International Publication No. WO91 / 19155. This conventional technique will be described with reference to FIG. 3. The heat storage fluid 72 is accumulated at the bottom of the fluid tank 71, and the capillary portion 73 is used.
In the heat storage fluid 7 by the external fluid flowing in the pipe 80 at
The evaporation of 2 is promoted. The heat storage fluid 72 that has evaporated is a pipe 74.
The inside of the chamber 7 is moved upwards depending on the opening degree of the valve body 75.
Intrude into 6. The chamber 76 is filled with a heat storage substance 77, and when the heat storage fluid 72 is combined with the heat storage substance 77, an exothermic reaction occurs. The heat generated by this exothermic reaction is
The external fluid flowing around the outer peripheral portion of the outer wall 81 of the chamber 76 is heated.
However, the heat storage substance 77 filled in the bottom portion of the chamber 76 has a problem that the evaporated heat storage fluid 72 is hard to reach and the exothermic reaction is slow.

Further, in order to perform heat exchange without the heat storage substance 77 and the external fluid flowing on the outer peripheral portion of the outer wall 81 being mixed with each other, the outer wall 81 having no air permeability is indispensable, and the heat capacity is increased. A large amount of heat is required to warm the outer wall 81 itself before the reaction heat is transferred to the external fluid, which causes a problem that the heat exchange with the external fluid is delayed in rising.

Further, there is a limit to the amount of the heat storage substance 77 that can be filled in the chamber 76, and in order to obtain a larger amount of heat storage, the chamber 7 can be used.
The number of 6 must be increased and the outer wall 81
However, there is a problem that the number of heat treatments, that is, the heat capacity increases. As a basic principle related art relating to the present invention, for example, there is one disclosed in Japanese Patent Laid-Open No. 53-148753.

[0005]

Therefore, the technical problems of the present invention are to improve the exothermic reaction in the heat storage device and to reduce the heat capacity of the heat storage device itself.

[0006]

[Constitution of the invention]

[0007]

The technical means of the present invention taken to solve the above-mentioned technical problems of the present invention include a first heat storage material and a second heat storage material which can be coupled / separated from each other, and a first heat storage material. ，
A heat storage device having a housing in which a second heat storage substance is enclosed, a first storage part in which the liquid of the first heat storage substance in the housing is stored, and a second storage part in which the solid of the second heat storage substance in the housing is stored. In, a tubular member that supports the second storage portion in a housing and through which a fluid flows, and a fin whose inner end is fixed to the outer circumferential surface of the tubular member so as to be able to transfer heat without contacting the housing. , A housing and a tubular gas permeable member that surrounds the outer ends of the fins in a non-contact manner. The second heat storage material is held between the outer peripheral surface of the tubular member and the gas permeable member, and the gas That is, the gas of the first heat storage substance is allowed to flow through the outer peripheral portion of the permeable member.

[0008]

According to the above-mentioned technical means of the present invention, when the gas of the first heat storage substance introduced into the housing of the second storage portion flows through the outer peripheral portion of the gas permeable member, it passes through the gas permeable member. Adsorbs and binds to the second heat storage material. Here, the tubular gas permeable member encloses the outer end of the fin and has a large area, and the gas of the first heat storage material can pass through any portion from the upper portion to the lower portion of the tubular gas permeable member. Can well adsorb and bond with the second heat storage material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the technical means of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the heat storage device 10 comprises a first storage section 11 and a second storage section 12, and both storage sections 11, 12 are provided.
The spaces are connected by a pipe 14 having a control valve 13.
In the first storage portion 11, a part of the pipe 21 is arranged in a space 23 in the first housing (housing) 22, and a large number of fins 24 are fixed around the pipe 21 in the space 23. ing. Further, a proper amount of the first heat storage substance (for example, H ₂ O) 15 in a liquid state is enclosed in the space 23, and the fluid 17 flows in the pipe 21.

The second storage portion 12 will be described with reference to FIG. 2 as well. The tubular members 31, 32 and 33 (however, the tubular members are not limited to three and may be any number) include a second housing (housing). The fluid 16 flows in the tubular member 31 (32, 33) from the introduction chamber 35 toward the discharge chamber 36 while being supported by the housing 34 so as to be positioned in the space 43 in the inside 34. A plurality of donut-shaped fins 37 (38, 39) are arranged on the outer peripheral surface of the tubular member 31 (32, 33) without contacting the housing 34. At this time, the fins 37 (38, 3) are arranged.
The inner end of 9) is fixed to the tubular member 31 (32, 33) so as to be able to transfer heat by means such as welding or adhesion. Here, among the fins 37 (38, 39), the one at the uppermost portion in the drawing acts as the upper bottom, and the one at the lowermost portion in the drawing acts as the lower bottom.

On the other hand, for example, a cylindrical gas permeable member 40 (4) that surrounds the outer ends of the fins 37 (38, 39).
1, 42) are arranged in non-contact with the housing 34. The gas permeable member 40 (41, 42) may be, for example, a mesh, a synthetic fiber, a sintered metal or the like, and can be surely held so as not to spill the second heat storage substance 18 described later, and if it is breathable. Anything is fine. Further, in this embodiment, the fins 37 (38, 39) have a donut disc shape, but the tubular member 31 (32, 3).
Any shape may be used as long as it connects the outer peripheral surface of 3) and the inner peripheral surface of the gas permeable member 40 (41, 42), such as a spiral plate shape or a flat plate shape extending in the vertical direction. But it's okay. However, in these cases, the second
Upper and lower bottom plates are provided to prevent the heat storage material 18 from spilling. The second heat storage material 18, such as Na ₂ S, is cylindrically held between the outer peripheral surface of the tubular member 31 (32, 33) and the inner peripheral surface of the gas permeable member 40 (41, 42). It When holding the heat substance 18, the heat substance 18 is filled between the adjacent fins 37 (38, 39), and then the gas permeable member 40 (41, 42) is inserted into the fins 37 (38, 39).
It is sufficient to cover the outer end so as to surround it, and this can be easily performed. The space 23, the pipe 14 and the space 43 are kept in a vacuum and low pressure state when the heat storage device 10 is operated. The operation of the heat storage device 10 having the above configuration will be described. The basic purpose of the heat storage device 10 is to heat the fluid 16 and cool the fluid 17. First, the first storage unit 1
In FIG. 1, when the fluid 17 flows in the pipe 21, the liquid first heat storage substance 15 in the space 23 under vacuum and low pressure is easily boiled and becomes a gas, and the first heat storage substance 15 is changed from the pipe 14 to the second storage portion 12. To the space 43. When the first heat storage substance 15 boils, heat is efficiently transferred from the fluid 17 to the first heat storage substance 15 as latent heat of vaporization through the fins 24, and the fluid 17 is cooled.

On the other hand, in the second storage portion 12, if the control valve 13 is opened, the first heat storage substance 15 in the form of gas enters the space 43, and the outer periphery of the gas permeable member 40 (41, 42). Flowing through the section. The second heat storage material 18 is in a state of, for example, Na ₂ S and does not have H ₂ O when the heat storage device 10 performs the heat radiation operation. However, when the gaseous first heat storage substance 15 starts to flow in the outer peripheral portion of the gas permeable member 40 (41, 42), the gaseous first heat storage substance 15 passes through the gas permeable member 40 (41, 42) to generate the second heat storage. It begins to act on the substance 18. That is,
The second heat storage material 18 is adsorbed and combined with the first heat storage material 15,
For example, Na ₂ S becomes Na ₂ S.xH ₂ O (0 <x <5), and an exothermic reaction occurs. Here, the fins 37 (38,
39) has such a shape that the outer peripheral surface of the tubular member 31 (32, 33) is connected to the inner peripheral surface of the gas permeable member 40 (41, 42), so that the second heat storage substance 18 is connected to the tubular member 31.
Gas-permeable member 40 (4
1, 42), the heat generated by the exothermic reaction is efficiently transferred through the circumferentially extending fins 37 (38, 39) to the tubular member 31 (32, 33) and the fluid 1
The fluid 16 can be heated by going to 6. Further, unlike the above-described conventional technique, the gas of the first heat storage substance 15 acts from the outer peripheral side of the cylindrical second heat storage substance 18,
More gas is likely to be adsorbed and bonded to the second heat storage material 18. Further, the heat capacity of the tubular members 31, 32, 33 is smaller than that of the outer wall as in the prior art, and the gas permeable member 40 (4
1, 42) also has a smaller heat capacity than the outer wall as in the prior art.

Eventually, the liquid first heat storage substance 15 in the first storage portion 11 becomes substantially entirely in a gaseous state, and is adsorbed and bonded to the second heat storage substance 18 in the first storage portion 12, thereby forming a fluid. The heating of 16 and the cooling of the fluid 17 are complete.
However, the fluid 16 can be heated and the fluid 17 can be cooled any number of times by repeatedly performing the regeneration described below.

That is, the fluid 16 having a temperature higher than the heat generation temperature of the second heat storage material 18 is caused to flow in the tubular member 31 (32, 33), and the fluid 17 having a temperature lower than the evaporation temperature of the first heat storage material 15 is passed through the pipe 21. Shed. As a result, the second storage unit 12 is in the state of Na ₂ S · xH ₂ O (0 <x <5)
The heat storage material 18 emits xH ₂ O (0 <x <5),
The liquid reaches the storage portion 11, is liquefied by being cooled by the fluid 17 via the fins 24, and is accumulated in the space 23.
Then, almost all of the first heat storage substance 15 in the first storage unit 11 and the second storage unit 12 is liquefied, and the regeneration is completed.

[0016]

As described above, in the heat storage device of the present invention,
When the gas of the first heat storage substance introduced into the housing of the second storage part passes through the gas permeable member and is adsorbed and combined with the second heat storage substance, the gas permeable member surrounds the outer end of the fin. Since the area is large and the gas of the first heat storage substance can be efficiently adsorbed and bound to the second heat storage substance, the exothermic reaction associated with this adsorption and binding is improved.

Further, since the housing is not in contact with the fins or the gas permeable member, the heat capacity in the reaction part is small and the exothermic reaction starts up quickly.

[Brief description of drawings]

FIG. 1 shows a configuration diagram of a heat storage device according to an embodiment of the present invention.

FIG. 2 shows an enlarged perspective view of a main part in FIG.

FIG. 3 shows a cross-sectional view of a prior art evaporation / condensation device and energy system.

[Explanation of symbols]

 10 heat storage device, 11 1st storage part, 12 2nd storage part, 15 1st heat storage substance, 18 2nd heat storage substance, 22 1st housing (housing), 31, 32, 33 tubular member, 34 2nd housing (housing) ), 37, 38, 39 fins, 40, 41, 42 gas permeable members.

Claims (1)

[Claims] 1. A first and a second heat storage substance that can be combined / separated from each other, a housing in which the first and the second heat storage substance are enclosed, and a liquid of the first heat storage substance in the housing is stored. In the heat storage device which has a 1st storage part and a 2nd storage part by which the solid of the 2nd heat storage substance of the housing is stored, the 2nd storage part is supported by the housing, and a fluid flows inside. A tubular member, a fin whose inner end is fixedly mounted on the outer peripheral surface of the tubular member in a non-contact manner with the tubular member, and a cylinder surrounding the outer end of the fin in a non-contact manner with the housing. The second heat storage material is held between the outer peripheral surface of the tubular member and the gas permeable member, and the gas of the first heat storage material flows through the outer peripheral portion of the gas permeable member. Characterized by Heat equipment.