JPS58130996A - Method and apparatus for chemical heat accumulation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chemical heat storage method and device for storing solar heat, industrial waste heat, and other waste heat through a chemical heat storage reaction, and recovering the heat at a higher temperature than the waste heat source when the heat is released. .

→ Currently, there is a social need for energy conservation, and various energy conservation technologies have been discovered, but among these, energy storage and heat storage technology, which is an effective way to use intermittent waste energy, is an important area. The location has been cleared.

By the way, at present, as a chemical heat storage body, Ca0-H=
o, Mgo-HIO, metal hydrides, ammine complexes, and many others.
In the high temperature range of 0℃, H-snow 804-H snow 0 series is 100℃~
In the intermediate temperature range of 300℃, and for the ammine complex system at 100℃
It is used in the following low temperature ranges. However, in the asymptote, due to energy saving technology, there is an increasing need for heat storage technology for waste heat sources in the medium and low temperature ranges, rather than technology for utilizing waste heat in the high temperature range, which is considered to be of relatively good quality.

The principle and structure of the conventional chemical heat storage method related to the present invention are as follows.

Conventional method (part 1) A -nx (solid) + to H,: A (solid) + n -x (gas) (a) A -nx = hydrate or complex, △H =
Heat of reaction A = anhydrous salt n = number of moles X
=The heat storage and heat release process of a chemical heat storage body using a chemical reaction of steam or gas is explained as follows with reference to FIGS. 1 and 2. In the ft) Fi condenser in Fig. 2, the vapor flowing in from the communication pipe (3) is condensed by the refrigerant flowing in and out through the refrigerant inlet pipe (7), the cooling section (4), and the refrigerant outlet pipe (6). to make a liquid. On the other hand, the reactor (2) is filled with a hydrate or a complex, and the heat source medium passes through the heat source medium inlet (9), the heating section (6), and the heat source medium outlet (8).
The filling inside is heated. Note that (lO) is pulp.

A) About the heat storage process 4g First, fill the reactor (2) with water or a complex,
When loop 11 (m) is opened, the refrigerant inlet/outlet pipe +61
+71 and cooling section (4). After that, the heat source medium inflow/outflow pipe +8) (91 and heating section (6)K) By letting the heat source medium flow in, the filling in the reactor (2) is heated and decomposed to generate steam. This steam is The internal pressure of the condenser (1) flows through the communication pipe (3) and is cooled and condensed into a liquid by the cooling section (4) inside.This reaction proceeds from the left side to the right side as shown in reaction formula (a). This means that the reaction has progressed according to the solid line with arrows in the vapor pressure diagram of FIG.

After this reaction is completed, when the pulp scream is closed, both systems are isolated and a heat storage state is established.

B) Regarding heat radiation process In the case of heat radiation, heat source medium inflow and outflow pipes +81, +91
After the heat recovery medium is circulated through the heating section (6), when the pulp pump is opened, the internal pressure inside the reactor (2) increases to the condenser 1.
Since the internal pressure is lower than the internal pressure in the condenser (11), it reacts with the anhydrous salt in item 1 and changes into a hydrate, and the heat of reaction generated at this time is recovered by the heat recovery medium. This step In applications, a low temperature heat source, such as water, is usually used to evaporate the condensate.

Conventional method (Part 2) B −n'c (solid) + △H°2B (solid) + n'C! (
Spirit piece...(b) D -n"E (hard) 10△H":D(
solid)+n"Ft(ki>・----eqB-n'c=
Hydrate or complex C=vapour or gas D −n”
E = hydrate or complex E = vapor or gas ΔH
' = Reaction heat
This will be explained with a diagram.

-4 In Figure 4, the reactor (!1) has a heat source medium inlet/outlet pipe (08) which is a flow path for the heat source medium and the heat recovery medium, DI and heating section (1), and the reactor (!1) has a double structure. The reactor (condensate of steam from the river) is stored on the outside, and the filling is stored on the inside.

In addition, the condenser has refrigerant inlet and outlet pipes that serve as cooling refrigerant passages.
There is a circle and a cooling section. The communication pipe (111 is the reactor (I)
l) and the outer part (12b) of reactor 0, and the communication pipe αη communicates with the inner part (12a) of reactor α.
The condenser 0'4 is connected to the condenser 0'4. Note that (14) (
lxun is pulp.

A) Regarding the heat storage process, first the reactor (river and reactor (inner part of l@@12a)
The refrigerant is filled with hydrate or complex, and the refrigerant flows into the refrigerant inlet/outlet pipe and the cooling section. After that (Lupu 04)
When (1@ is opened and the heat source medium flows into the heat source medium inflow and outflow pipe H (II), the filling in the reactor (11) is heated by the heating section. At this time, in the reaction equation e→, the flow changes from the left side to the right side. The reaction progresses. The steam generated in the reactor θ1) flows into the outer part (12b) of the reactor (1'4), and by heating the filling in the inner part (12a) of the reactor, the steam is condensed. The vapor generated from the heated filling in the reactor H passes through the communication pipe (lη) and reaches the condenser 01, where it contacts the cooling section to exchange heat and condense.

The reaction at this time is that the reaction progressed from the left side to the right side in the reaction equation. 0 After the reaction is completed, the pulp (14)
When DI is closed, the heat storage process ends.

B) Regarding the heat dissipation process In the case of heat dissipation, the heat recovery medium is flowed into the reactor (1) through the heat source medium inflow and outflow pipe.

When the pulp (16) (11 is opened, the steam in the condenser α field flows through the communication pipe C1711 into the reactor (inner part (12a) of I), reacts with the filling material, and generates reaction heat. This heat heats the condensate in the outer part (12b) of the reactor and generates steam.
6) and enters the reactor (11) where it reacts with the filling and generates reaction heat. The generated reaction heat is transferred to the heat source medium inlet and outlet pipe Q.
8) It exchanges heat with the heat recovery medium flowing inside H and is carried away to the outside.

The reaction that occurs in the reactor (11) is a reaction that proceeds from the right side to the left side in the reaction equation (1'4), and there is a reaction equation that occurs in the reactor (11). This is the vapor pressure in Figure 3. The conventional method (
Similar to part 1), a low-temperature heat source is required to evaporate the condensate.

In the above two conventional methods, it is possible to recover heat, but it is impossible to recover heat having a temperature higher than the temperature of the heat source. There is currently a need to obtain a recovered heat source from low temperature heat sources that is higher in temperature than those heat sources, and the present invention is provided to meet this need.

Next, the present invention will be explained in detail using FIGS. 5 and 6.

Reactor? Inside the Shu, there is a filling and a heat source medium inlet/outlet pipe side, 0
The condenser t2BK has a cooling section 4 connected to the refrigerant inflow/outflow pipe side (A) and the limb pipes. The reactor has an inner part (26a) and an outer part (26a).
b) It has a double structure separated from the inner part (26a
) is internally provided with a heat source medium inflow/outflow pipe f411 and a heating section connected to the limb pipe. Further, the condenser K is internally provided with a refrigerant inlet/outlet pipe (1) and a cooling part port υ connected to the limb pipe. The communication pipe - is a pipe that connects the reactor (goods) and the condenser -, and the communication pipe - connects the reactor (goods) and the outer part (26b) of the reactor (a) through the communication pipe @4. It is a tube that

The communication pipe (goods) connects the condenser (to) and the outer part (2) of the reactor.
6b), and the communication pipe is a pipe that connects the inner part (26a) of the reactor and the condenser (b).

←4) (Hate decoy [ηni ~---〇p is pulp.

A) Regarding the heat storage process, first, the inner part (26a) of the reactor (24 and (a))
After filling the Ic hydrate or complex, open the pulp door and transfer the cooling medium to the condenser (goods) and (goods), respectively, through the refrigerant inlet and outflow pipes (3I19 (to)) and the respective cooling sections (2). After that, the parbu-η is opened and the pulp KI II is opened to connect the heat source medium inflow and outflow pipes to the reactor example and the inner part (26a) of the reactor (a), respectively!61@ηf41f41) Then, the hydrate or complex in each reactor is heated to the temperature (TI) of the heat source.
At the same time, the vapor pressure (formula) increases and steam is generated.

The steam generated in the reactor example is passed through the communication pipe and the pulp (44
It comes into contact with the cooling section 4 in the condenser (c) through I and becomes a condensed liquid and accumulates. The temperature of the condensed liquid at this time is (T1). In addition, the hydrate or complex filled in the inner part (26a) of the reactor is also heated and generates steam having a temperature of vapor pressure (P*)y (TI) as in reactor e241, and the steam is in contact with the communication pipe and the pulp (through 4η to the condenser, refrigerant inflow/outflow pipe IQ f43) and the cooling section (30) to become a condensed liquid with a temperature of (T).In this way, each reaction After the reaction in the vessel is completed, the heat storage process is completed by closing each pulp.This reaction progresses from the left side to the right side of reaction equation (a).

(2) Heat radiation process In the case of heat radiation, the pulp chamber is first opened, and the condensate in the condenser kiln is allowed to flow down to the outer part (26a) of the reactor through the communication pipe. 46) close.

Then, the heat recovery medium is inserted into the reactor and the inner part (26a) of (a).
1+ and between the heating parts. Next is pulp←
When η- is opened, the steam in the condenser passes through the communication pipe and reaches the inner part of the reactor (26a), where the reaction formula (
A reaction occurs from the right side to the left side of b), and reaction heat is generated.

This heat of reaction heats the condensate in the outer part of the reactor (26b) to the temperature (TI) shown in FIG.

There, steam with a steam pressure (P"l) corresponding to the temperature (T1) is generated. This steam passes through the communication pipe UN and reaches the reactor, which is in a lower pressure state, and the reaction formula (a) is expressed. The reaction from the right side to the left side generates heat and rises to a temperature (Ts) corresponding to the vapor pressure (PII, ) of the hydrate or complex, and the heat at a higher temperature than the heat source is recovered by the heat recovery medium. Even in the case of woodworking 11, it is necessary for the water to evaporate the condensate to evaporate the condensate in the case of the heat storage process. By using this method, it is possible to recover heat having a temperature higher than that of conventional heat sources, which has been impossible, and has the tremendous effect of making it possible.

Fig. 1%$3 is a conventionally known vapor pressure diagram, Fig. 2 is a schematic diagram showing the chemical heat storage method based on Fig. 1, Fig. 4 is a schematic diagram showing the chemical heat storage method based on Fig. 3, and Fig. FIG. 6 is a vapor pressure diagram for explanation, and is a schematic diagram showing an embodiment of the present invention.

(2 Shu・・・・・・Reactor □□□・・・・
・・Condenser acupuncture・・・・・・・Reactor □□□
......Condenser 0 [...Heating part
(2I＠υ・・・・・・Cooling part oni 1 Liu Saiz 1ml f 31狽″7′4−lΔ ロ Voice Qi 5゛ −

Claims (1)

[Claims] (+) A−X+△H2A+X A4 = hydrate or complex A - anhydrous salt A chemical heat storage method that utilizes a reaction system (which becomes solid when the heat source is heated), characterized in that heat at a temperature higher than that of the heat source medium is recovered by combining at least two series of said reaction systems in series. Method (2) A-X + △H: Ax A-X - Hydrate or complex 8 - Anhydrous salt A device for storing heat using a reaction system (which becomes a solid when it becomes a solid), which has at least two reactors and two condensers, and one of the reactors
One of the condensers has a structure that can accommodate the reactant and the condensate at the same time in an isolated state, one of the condensers has a structure that has the function of an evaporator, and the other has a structure that has the function of an evaporator.