JPH06117724A - Chemical heat storage type heat pump - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate the flow of the reaction gas in the reactor 1 of the chemical heat storage type heat pump and to provide the space 10 in the reactor 1.
It is to reduce the ratio of, and to make it smaller and more efficient. A reactor 1 filled with solid particles 2, a container 3 enclosing a liquid 4 and a conduit 5 with a valve 6 connecting them are provided, and the conduit is extended from inside the reactor 1 to an internal pipe 7a. Become.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A conventional chemical heat storage type heat pump is, for example, a solar energy volume 34, number 4 /
5 "STUDIES OF AN ENERGY STORAGE
System by Use of the Reversible Chemical Reaction "(Solar Energy Vol.34, N
4/5, pp.367-377 (1985) "Studies
Of An Energy Storage System By Use Of The Reversi
As described in “ble Chemical Reaction”, in order to sufficiently distribute the reaction gas, pass a heat exchanger through a cylinder made of wire mesh,
A large number of columnar particles filled with solid particles are lined up at intervals in the space surrounded by the inner surface of the wire mesh and the outer surface of the heat exchanger, and these are installed in the reactor. A conduit is attached to connect to the vessel (or condenser).

Further, as described in JP-A-57-65589, a space surrounded by an inner surface of a circular tube and an outer surface of a filter cylinder is filled with a metal hydride, and hydrogen is introduced into the filter cylinder. There is an attempt to increase the reaction rate. However, in this example, when the circular pipe is long, there is a possibility that hydrogen gas may not be sufficiently supplied to the tip of the circular pipe.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to ensure the flow rate of a reaction gas in a reactor and reduce the ratio of wasted space in the reactor so that the chemistry is small and has high reaction efficiency. To obtain a heat storage type heat pump.

[0005]

SUMMARY OF THE INVENTION The above problems are solved by inserting a reaction gas conduit inside the reactor.

[0006]

[Function] Since the flow rate of the reaction gas in the reactor can be secured, the reaction rate is increased. Further, the reactor can be downsized.

[0007]

EXAMPLES Examples of the chemical heat storage type heat pump of the present invention will be described below.

FIG. 1 is a vertical cross-sectional view showing the configuration of an embodiment of the chemical heat storage type heat pump of the present invention. The chemical heat storage type heat pump comprises a reactor 1, a vessel 3 and a conduit 5 with a valve 6 connecting them. In the reactor 1, solid particles 2 (quick lime, zeolite, silica gel, etc.)
The container 3 is filled with a liquid 4 (water, ethanol, etc.). Solid that generates reaction gas instead of liquid 4
(Hydrogen storage alloy, etc.) may be enclosed. This drawing shows the case where the heat medium is liquid, and heat medium flow paths 11a and 11b are provided on the outer surfaces of the reactor 1 and the container 3, respectively. At the time of heat dissipation, the heat medium flowing in the heat medium flow passage 11a removes heat generated from the solid particles 2, and the heat medium flowing in the heat medium flow passage 11b heats the liquid 4. In this case, the container 3 acts as an evaporator, and the reaction gas moves from the container 3 to the reactor 1. Further, during heat storage, the heat medium flowing in the heat medium flow passage 11a heats the solid particles 2, and the heat medium flowing in the heat medium flow passage 11b cools the liquid 4. In this case, the container 3 acts as a condenser, and the reaction gas moves from the reactor 1 to the container 3. A space 10 is provided by a wire mesh 9 in the packed bed of the solid particles 2 in the reactor 1, and an insertion tube 7a is inserted into the space 10. A hole 8 is provided at the tip of the insertion tube 7a, and a hole 8a is provided at the intermediate portion. With this structure, when heat is dissipated, the reaction gas is directly ejected from the hole 8 at the tip of the insertion tube 7a and the hole 8a at the intermediate portion. After that, the reaction gas passes through the space 10 and further through the mesh of the wire net 9 to be uniformly diffused in the packed layer of the solid particles 2. Further, even when heat is stored, the reaction gas generated by the reverse reaction can be efficiently introduced into the container 3 and condensed in a short time by passing through the holes 8 and 8a.

FIG. 2 is a vertical sectional view showing a second embodiment in which a plurality of insertion tubes 7a are provided in the reactor 1, and FIG. 3 is a sectional view taken along the line AA of FIG. In this embodiment, the conduit 5 is branched into a plurality of insertion tubes 7a in the reactor 1, but it is also possible to branch into a plurality outside the reactor 1. This example is effective when the reactor 1 is relatively large.

FIG. 4 is a vertical sectional view showing a third embodiment of the reactor 1. This is because a wire net 12a is attached to the lower part of the reactor 1, and the solid particles 2 are placed on the wire net 12a to provide spaces 10 and 10a in the upper part and the lower part, respectively, and the packed bed of the solid particles 2 is penetrated from the bottom of the reactor 1. The reaction gas is circulated through the holes 8 and 8a of the inserted tube 7a. With such a structure, without connecting the two conduits 5 to one reactor 1 from the outside, the pressure in the upper part and the lower part in the reactor 1 is made uniform by one insertion tube 7a, and the solid particles 2 The reaction gas can be uniformly diffused in the packed bed. As a result, the portion occupied by the conduit 5 is reduced, and the heat pump can be downsized. Further, the number of connection points between the reactor 1 and the conduit 5 can be reduced.

FIG. 5 is a vertical sectional view showing a fourth embodiment of the reactor 1. In this embodiment, a plurality of vertically long reactors 1 are arranged in parallel, and an insertion tube 7a is inserted into each of them. By elongating the reactor 1 and providing the fins 13a on the outside, heat exchange between the solid particles 2 and the heat medium flowing on the outer surface of the reactor 1 is promoted. The reactor 1 in this figure can also be arranged horizontally.

FIG. 6 is a vertical sectional view showing a fifth embodiment in which the reactor 1 is horizontally long, and FIG. 7 is a sectional view taken along line BB of FIG. In this embodiment, the space 1 formed above the reactor 1
An insertion tube 7a is inserted at 0. By providing the holes 8 at the tip end and the intermediate portion of the insertion tube 7a, the reaction gas is easily diffused uniformly in the packed layer of the solid particles 2.

FIG. 8 is a transverse sectional view showing a sixth embodiment of the reactor, and FIG. 9 is a sectional view taken along the line CC of FIG. This is one in which a reactor 1 is provided with a packed bed of a plurality of solid particles 2 surrounded by a metal net 12b and an insertion tube 7a.
A heat exchanger 14 with fins 13b is provided in the packed bed of the solid particles 2. In the present embodiment, the heat exchange efficiency is improved by providing the heat exchanger 14 with the fins 13b in each packed bed. Further, since a plurality of insertion tubes 7a are inserted in the space 10 in the reactor 1, the reaction gas is easily diffused in the packed bed of each solid particle 2.

FIG. 10 shows an insertion tube 7a having a large number of holes 8a.
2 is a vertical cross-sectional view showing a second embodiment of FIG. As shown in this figure, by providing a large number of holes 8a in the insertion tube 7a, the reaction gas can be uniformly diffused in the packed bed of the solid particles 2 while maintaining the strength of the insertion tube 7a.

FIG. 11 is a vertical sectional view showing a third embodiment of the insertion tube 7a. In this embodiment, many holes 8a are provided in the vicinity of the tip of the insertion tube 7a to facilitate the diffusion of the reaction gas from the vicinity of the tip.

FIG. 12 is a vertical sectional view showing a fourth embodiment of the insertion tube 7a. In this embodiment, the insertion tube 7a and the wire net 9 are integrated by a wire net support 15. With such a structure, the shape and size of the space 10 around the insertion tube 7a can be freely determined.

FIG. 13 is a vertical sectional view showing a fifth embodiment of the insertion tube 7a. In this embodiment, the adjacent wire mesh support 15
By providing the wire net 9 as shown in the figure, the diffusion of the reaction gas into the packed bed of the solid particles 2 is further facilitated.

FIG. 14 is a vertical sectional view showing a sixth embodiment of the reactor 1. In the present embodiment, a plurality of branch pipes 7c branched from the insertion pipe 7a are provided in the horizontal direction, and a hole 8 is made at the tip thereof, so that the solid particles 2 in the vicinity of the heat medium flow passage 11a are formed.
A large amount of reaction gas can be introduced into. With this structure, the reaction rate of the reactor 1 can be increased.

FIG. 15 is a vertical sectional view showing a second embodiment of the chemical heat storage type heat pump of the present invention. In this embodiment, a solid reaction gas generator (hydrogen storage alloy, hydrated salt, etc.) 16 is enclosed in the container 3 instead of the liquid 4. As an example, when the hydrogen storage alloy is used in the chemical heat storage type heat pump, both the reactor 1 and the container 3 are filled with the hydrogen storage alloy. Therefore, by providing the insertion tube 7a not only in the reactor 1 but also in the container 3, the same effect as the reactor 1 can be obtained in the container 3.

[0020]

According to the present invention, (1) the flow of the reaction gas in the reactor 1 is facilitated, and the solid particles 2 in the reactor 1 are
Increase the reaction rate of. (2) Due to the effect of (1), the reactor 1
Can be downsized. (3) The number of connection points between the reactor 1 and the conduit 5 can be reduced.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a chemical heat storage type heat pump of the present invention.

FIG. 2 is a vertical cross-sectional view showing a second embodiment of the reactor of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a vertical sectional view showing a third embodiment of the reactor of the present invention.

FIG. 5 is a vertical cross-sectional view showing a fourth embodiment of the reactor of the present invention.

FIG. 6 is a vertical sectional view showing a fifth embodiment of the reactor of the present invention.

7 is a sectional view taken along line BB of FIG.

FIG. 8 is a cross-sectional view showing a sixth embodiment of the reactor of the present invention.

9 is a sectional view taken along line CC of FIG.

FIG. 10 is a vertical cross-sectional view showing a second embodiment of the insertion tube of the present invention.

FIG. 11 is a vertical cross-sectional view showing a third embodiment of the insertion tube of the present invention.

FIG. 12 is a vertical sectional view showing a fourth embodiment of the insertion tube of the present invention.

FIG. 13 is a vertical cross-sectional view showing a fifth embodiment of the insertion tube of the present invention.

FIG. 14 is a vertical sectional view showing a seventh embodiment of the reactor of the present invention.

FIG. 15 is a vertical cross-sectional view of a configuration showing a second embodiment of the chemical heat storage type heat pump of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Reactor, 1a ... Reactor wall, 2 ... Solid particles, 3 ... Container, 4 ... Liquid, 5 ... Conduit, 7a ... Internal pipe, 7c ... Branch pipe,
8, 8a ... Hole, 9 ... Wire mesh, 10, 10a ... Space, 11
a, 11b ... Heat medium flow path.

Claims (1)

[Claims] 1. A reactor filled with solid particles, a container in which a liquid is sealed, and a conduit having a valve for connecting them, and an insertion pipe extending from the conduit is inserted into the reactor. Chemical heat storage type heat pump.