JPS5949492A - Heat accumulating tank and heat accumulating system utilizing hydrogenated metal - Google Patents

Abstract

PURPOSE:To rise the reference temperature of the hydrogenated metal from the level of room temperature to the level of heat exhausting temperature and reduce the sensitive heat loss of a pressure resistant vessel upon heat dissipation by a constitution wherein a hydrogenated metal tank is covered by a heat insulating layer and the outside thereof is covered by a temperature keeping tank while a low-qualitied heat exhausting medium is passed through the temperature keeping tank. CONSTITUTION:The temperature keeping tank 4 is provided at the outside of the hydrogenated metal tank 2 of the pressure resistant vessel through the heat insulating layer 3 while the tank 4 is provided with a low-qualitied heat exhausting medium introducing tube 5 and the discharging tube 6 of the same. One end of the hydrogenated metal tank 2 is connected to a heat exchanger 7 provided with a heat medium introducing tube 8 and the discharging tube 9 of the same. Upon dissipating heat, the heat exhausting medium is passed previously through both of the temperature keeping tank 4 and the heat exchanger 7 by the heat medium introducing tube and the discharging tubes 5, 6, 8, 9 to rise the reference temperature of the whole of the hydrogenated metal tank 2 from the level of the room temperature to the level of the heat exhausting temperature and, thereafter, hydrogen is introduced through a hydrogen transfer tube 10.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a frame tube for a heat insulating tank through which a low-quality waste heat medium from a low-quality heat source can pass through a heat insulating layer outside the metal hydride tank. A heat storage tank capable of raising temperature from room temperature to exhaust heat temperature level, and a heat storage system using this heat storage tank, which uses the low-quality waste heat IIL in the heat dissipation process once a month to generate heat from hydrogenation reaction. The present invention relates to an FC heat storage system configured to effectively recover heat at high P1C levels.

A certain f-heavy gold h7! Hydrogen and alloys are capable of storing hydrogen at densities equal to or higher than that of liquid hydrogen, and are attracting attention as a new hydrogen storage area. Metal hydrides that have been depleted have the property of not only storing hydrogen, but also as energy conversion materials for converting the chemical energy of hydrogen into heat or mechanical energy.
), and the amount of heat storage per unit volume is about 10 times that of conventional heat storage materials. It is highly expected to be used as a medium for air conditioning, heating, and hot water systems, heat Fi&+3+i+, compressors, pumps, etc.

The x-thermal system using metal hydrides is currently in the development stage, but since it involves a reaction between a solid (alloy) and a gas (hydrogen), it has the advantage that the entire system can be controlled only by controlling the gas flow rate.

However, in order to use pressurized hydrogen, the metal water bulk tank must be a pressure-resistant container, so when high-temperature level heat is dissipated during the heat dissipation process, the amount of heat expended at the 'A temperature of the heat storage tank is extremely low. As a result, the ratio of recovery passion to heat storage becomes smaller. However, even in this case, the entire tank remains at a high temperature level, so while heat recovery is being performed, The amount of heat dissipated to the surroundings is too large to be ignored.

This invention was made in order to minimize the sensible heat loss of the pressure vessel as described above and the heat loss dissipated to the surroundings. It is equipped with a heat exchanger connected to the other end, and a heat insulating layer that covers at least a portion of the tank excluding the other end, and a heat insulating tank is installed outside the heat insulating layer (1111). 4
%, and four heat storage tanks are provided in which the reference temperature of the metal hydride tank can be raised by passing a low-quality waste heat medium through the heat storage tank.

The heat storage of this invention is to cover the metal water bulk compound tank with a thermal layer (;
This heat insulation (i) is configured to allow a low-quality waste heat medium to pass through it, and is characterized by scales that raise the reference temperature of the metal hydride from the room temperature level to the waste heat level.
It is something.

Furthermore, the present invention provides a method for connecting the heat storage tank with a hydrogen inlet/output conduit at one end and a heat exchanger at the other end, and a fc hydrogen storage tank charged with gold 8 hydride. The excess heat medium is connected to the hydrogen storage 1i' by connecting it through an on-off valve; −t,′
A cooling medium transfer pipe to pass through the heat exchanger No. 1 via an on-off valve, and a low-quality waste heat medium to the heat exchanger of the heat storage tank, the heat storage tank of the heat storage 41, and the heat exchanger of the hydrogen storage tank. The present invention provides a heat storage system having a pipe for transferring waste heat medium through an on-off valve.

The heat storage system of the present invention uses the above-mentioned heat storage tank, and in the heat dissipation process, branches the low-quality waste heat medium into three directions, and exchanges heat with the heat retention tank of the heat storage tank P2! The heat from the hydrogenation reaction is passed through the heat exchanger of the hydrogen storage IR tank and the hydrogen storage IR tank at the same time to achieve a high τIA.
It is occupied by one so that it can be collected effectively.

(According to this invention, the pressure resistant Q-7 device during heat dissipation is
11 Agency ~ Loss is stored in advance due to low quality 14 heat.
4\'i The whole is made from the room temperature level to the exhaust heat temperature level in two rows, and the kth becomes very small. RS loss scattered around the area is heat storage 4i'! Is the ambient temperature of each metal water voluminous compound tank 1 in 1 discharged? ? The vorticity becomes very small because it is raised by the bell switch. Furthermore, this heat storage system can also be used as a heat pump.

Next, this invention will be explained in detail with reference to the drawings.

FIG. 1 shows a cross-sectional view of a heat storage tank ( ) according to an embodiment of the present invention.

That is, a heat insulating tank (4) is installed on the outside of the metal hydride tank (21) of the pressure-resistant container via a heat insulating layer (3), and this heat insulating tank (4) is connected to the low-quality waste heat medium introduction pipe (5). The same discharge pipe (6
). Also, at one end of the metal hydride tank (2),
A heat exchanger (7) having one inlet pipe (8) and one discharge pipe (91) is connected to the heat exchanger (7).When releasing heat, the waste heat medium is transferred to the heat retention tank (4) and the heat exchanger (7) in advance. and to both,
Each tJ medium type inlet and outlet pipe (5) 101
(81 (metal hydride 4' passed by 91:
! / (2 + overall reference temperature from room temperature L/bell
(Let it rise to temperature level, then introduce hydrogen through the hydrogen transfer tube.

Fig. 2 1-1 Aspiration of an embodiment of this invention! (tank (111
78 hydride tank (NJ [(+3: Fault J layer +
041: Heat retention 131, OFQ: 1'j'-cross]
An embodiment of the present invention in which a hydrogen storage m11171 with a west side exchanger (1G connected to one end) is connected by a hydrogen transfer pipe Ill via a 11-closed valve +]i11. The structure of the heat storage system is explained in 1. t20+ is a low-quality waste heat medium transfer pipe, 121) is a cooling 117, body transfer pipe, (〃 is a surplus heat medium transfer pipe,
1 (2r, l are on-off valves, gradient is a load section.

During heat storage, first close the on-off valve (2)++ (251m), open the on-off valve (24+), and exchange heat with the heat storage tank (thermal tank 04 of 111) through the low-quality waste heat medium transfer pipe 201. The temperature of the metal hydride tank O4 is raised to the temperature level of the low-quality heat medium by passing through the metal hydride tank 09.Then, the on-off valve Q4) is closed and the on-off valve Q4) is opened to transfer all 1 jll thermal bodies to that f8. Hydrogen generated by causing a dehydrogenation reaction of the metal hydride by being sent to the heat exchanger (li) through the water transfer pipe (a) and passing through the water transfer pipe (u9) to the opened on-off valve +IP- At the same time, the opening/closing valve is opened and the cooling medium is sent to the hydrogen storage tank (17) and passed through the hydrogen storage tank (161). ) is cooled and hydrogenated using the water bed sent from the heat storage tank (111).
First, heat storage occurs. In this way, the tetrahydride is discharged to the gold in the p7% u form in advance with the size of the p7%u body! Since heat can be stored after the body has cooled by one temperature, heat can be recovered from the surplus heat cream body without waste.

On the other hand, during heat dissipation, close the on-off valve [25+ (to), open the on-off valve (23) and open the on-off valve (4) to send the waste heat medium to the heat exchanger 010υ and heat retention tank 04), and let it pass through the hydrogen storage tank +17. ) and the heat storage tank (1]), the temperature of one t71 heat lamp increases by 1 ζ
After that, open the 1/11 closing valve (IIζ) and close the hydrogen transfer pipe E.
1!1, hydrogen is transferred from the hydrogen storage tank gη to the gold 8-hydride tank θ. As a result, gold has tetrahydride 4';
The metal hydride in V (+2 is hydrogenated and heat is generated, and the thermal energy μ is stored Iy 41”i p+, %
The heat medium is transferred to the first door 09 and the temperature is 7' higher than the other heat temperature level! l temperature and is supplied to the load surface.

In this way, this heat storage system has traditionally been difficult to obtain due to the national crisis.
It is possible to efficiently recover heat at a high temperature level.

[Brief explanation of the drawing]

FIG. 1 is a tc1 sectional view of an embodiment of the heat storage tank of the present invention,
FIG. 2 shows the accumulation of this invention in one embodiment of the 1-system (j
It is a 91 diagram of q construction. (1) Ill, , thermal storage tank, (21(12-...gold hydride, (31(1:6 =-insulating layer, (41(
141-, heat retention tank, (7) 0! 'DllG...r? 1
~Exchanger, (5) (81...Heat 111.l: Body introduction pipe, f61t9+...Heat medium discharge pipe, (1(I +
191...Hydrogen transfer pipe, +171...Hydrogen storage R tank, 11111 G! :ll [24+ (δ)Q6)・
...Opening/closing valve, 121+1...Low quality waste heat medium transfer pipe,
2+1...Cooling medium transfer pipe, (221...Remaining 11
Heat medium transfer pipe, schiff)...Load section.

Claims (1)

[Scope of Claims] J, a metal hydride phase having a hydrogen inlet/output pipe at one end, a heat exchanger connected to the other end of this (17), and a heat insulator covering at least a portion of this tank except for the other end. Furthermore, a heat insulating tank is covered on the outside of this heat insulating layer, and the temperature of the metal hydride phase can be increased by passing a low-quality waste heat medium through '1'. a metal water impurity tank having a heat storage 40°2, a hydrogen inlet/output member, and a pipe at one end;
It is equipped with a heat exchanger connected to the other end of this tank, and an Ur# layer covering at least a portion of the tank excluding the other end, and furthermore, a heat insulating tank 7 is covered on the outside of this heat insulating layer. A heat storage cover j1,
Hydrogen storage Xt4 with a hydrogen inlet/output pipe at one end, a heat exchanger installed at the other end, and filled with metal hydride? ff by connecting each hydrogen inlet/output conduit via an on-off valve; Excess heat medium transfer pipe line for passing the excess heat medium to the heat exchanger of the heat storage tank via the on-off valve, and cooling medium. A cooling medium transfer line for passing the low-quality waste heat medium to A- of the hydrogen storage tank through an on-off valve, and a heat exchanger for the heat storage tank, a heat insulating tank for the heat storage tank, and a hydrogen storage tank. A heat storage system that has a heat exchanger and a waste heat medium transfer pipe that is passed through an on-off valve.