JPS6114231B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention uses a water electrolyzer (solid polymer electrolyte (SPE) type electrolytic cell) capable of electrolysis with high current efficiency to obtain a heat medium for heating and other uses. The present invention relates to a heat source device.

The above-mentioned water electrolyzer is already used to produce hydrogen gas, which is used as a fuel or chemical raw material, using water as a raw material.As shown in Figure 1, the water electrolyzer Pure water c can be freely supplied from pure water tank b to tank a, while a DC power supply d is connected to the electrode of tank a, hydrogen gas obtained from tank a is sent to demand e, and oxygen gas is At this time, the above-mentioned pure water c is consumed as the water electrolyzer a operates, so the pure water tank b contains water produced by the separately equipped pure water production equipment f. It is necessary to replenish pure water.

However, since the pure water production equipment f is quite expensive, not only does the initial cost of this type of plant become high, but it also requires a large equipment area, and moreover, the use of the DC power supply d There are drawbacks such as consuming a lot of commercial power and increasing running costs.
These difficulties have been a major bottleneck in trying to utilize the plant in multiple ways.

This invention provides a solution to the problems related to pure water supply sources that this type of plant has, uses solar cells as the DC power source to utilize natural energy, and has a configuration appropriate for the plant. By adding a combustion section using the necessary piping, the aim is to provide an inexpensive heat source device that can be used for heating livestock barns, greenhouses, etc., and to save energy at the same time as making the system labor-saving. It is a purpose.

This invention will be described in detail by means of illustrated embodiments.
As shown in FIG. 2, the water electrolyzer 1 has a pure water supply source 2.
Pure water 3 is supplied from the pure water tank shown in the figure through the supply pipe 4, and the residual pure water in the tank 1 is returned to the pure water tank through the recovery pipe 5. Hydrogen gas and oxygen gas are discharged into the hydrogen pipe 6 and the oxygen pipe 7, respectively.
Furthermore, the configuration in which a DC power source is applied to the electrodes of the water electrolyzer 1 is the same as that of the hydrogen gas production plant illustrated in FIG.

In this invention, first of all, a power supply unit 8 that uses solar cells instead of using commercial power as the DC power supply is adopted, and the power supply unit 8 is installed, for example, on the roof of the livestock shed A as shown in FIG. When the solar cell module 8 ₁ is configured with only the known solar cell module 8 ₁ . _. . as shown in FIG. A part of the output from the battery is consumed by the electrode, and the remaining output charges the battery ₈₃ , and at night when the body is not exposed to sunlight, the output from the charged battery ₈₃ is used to perform electrolysis in the water electrolyzer 1. may be continued.

Next, in this invention, the hydrogen piping 6 and the oxygen piping 7 are opened to the combustion chamber 11 of the combustion section 10 which is closed by the vessel body 9, and therefore an ignition (not shown) is provided in the same chamber 11. When the gas supplied to the chamber 11 is ignited by the stopper and completely combusted, water vapor is generated in the chamber 11 due to H ₂ and O ₂ , and high-calorie heat is generated due to the oxyhydrogen flame. That's true.

Furthermore, the combustion section 10 has a heat exchange chamber 13 partitioned by a partition wall 12 above the combustion chamber 11, and one end of a heat radiation path 14 installed in the chamber 13 opens into the combustion chamber 11. The other end of the channel 14 is a pure water return channel 15 extending through the container body 9.
It is in communication with the pure water supply source 2 through.

A liquid or gas heat medium B flows into the heat exchange chamber 13 from the medium introduction pipe 16, and the medium B is heated by the hot water vapor passing through the heat radiation path 14, and this heated heat medium B is supplied through a heat supply pipe 17 to a heat demand destination 18 such as a radiator, for example.

At this time, the heat medium B is the − dotted chain line L in FIG.
The medium is introduced into the heat exchange chamber 13 from the medium introduction pipe 16 as shown in FIG.
The heat medium B may be sent to the customer 18 and discharged outside the system, or the heat medium B may be circulated as shown by the dashed line L'.

In the embodiment shown in FIG. 2, the hydrogen storage tank 19 and its on-off valve 20, and the oxygen storage tank 21 are connected to the hydrogen pipe 6 and the distribution pipe 7, respectively.
and an on-off valve 22 are provided.

Therefore, if the device according to the above embodiment is operated now, pure water 3 is supplied from the pure water supply source 2, and the water electrolyzer 1 is supplied with a DC voltage to the electrodes by the power supply section 8 using a solar cell. , pure water is electrolyzed and hydrogen gas and oxygen gas are stored in a hydrogen storage tank 19 and an oxygen storage tank 21 via a hydrogen pipe 6 and an oxygen pipe 7, respectively.

Therefore, in order to supply the heated heat medium to the heat demand destination 18, the opening/closing valves 20 and 22 are opened appropriately and ignited in the combustion chamber 11, so that an appropriate amount of hydrogen gas flows into the combustion chamber 11. The oxygen gas is completely combusted, and as a result, heated water vapor is sent to the heat exchange chamber 13 and the internal heat radiation path 14.

From the medium introduction pipe 16 to this heat exchange chamber 13,
For example, since a heat medium B such as air, water, or oil is supplied, the heat medium B is heated by the heated steam, and the heat medium B with sufficient thermal energy is supplied to the heat supply pipe 17 to meet the heat demand. Sent to destination 18.

Here, in the heat radiation path 14, the heated steam is cooled by the heat medium B, so the steam becomes pure water, and this pure water is passed through the pure water return path 15.
The purified water is then returned to the pure water supply source 2.

The present invention is embodied by the above embodiment, in which a water electrolytic cell 1 having an anode and a cathode and a pure water supply source 2 supply stored pure water 3 of the supply source 2 into the tank of the water electrolytic cell 1. The anode and cathode are connected to the positive and negative output terminals of a power supply section 8 using a solar cell, respectively, and the separately equipped combustion section 10 has a combustion chamber 11 and a combustion chamber 11. A heat exchange chamber 13 is provided, and the combustion chamber 11 includes a hydrogen pipe 6 and an oxygen pipe connected to the water electrolyzer 1 to extract hydrogen gas and oxygen gas generated by electrolysis of the pure water 3, respectively. One end of the heat radiation path 14 installed inside the heat exchange chamber 13 and connected to the pipe 7 for the combustion chamber 13 is connected to the combustion chamber 13.
It opens into the combustion chamber 11 so that water vapor obtained by combustion of the hydrogen gas and oxygen gas supplied thereto can be introduced, and the other end is connected to the pure water supply source 2 through the pure water return path 15. A medium introduction pipe 1 that communicates with the heat exchange chamber 13 and introduces the heat medium B into the heat exchange chamber 13.
6 and a heat supply pipe 17 from which the heat medium after heat exchange with the water vapor in the heat radiation path 14 is led out, and this heat supply pipe 17 is connected to the heat demand destination 18. , B is the heat demand source High heat is obtained by the oxyhydrogen flame, and the heat medium B with sufficient thermal energy is sent to the heat demand destination 18, and the generated heated steam is cooled and becomes pure water. Since the hydrogen gas is returned to the supply source 2, there is no need to replenish pure water, thereby eliminating the need for expensive pure water production equipment that has been indispensable in conventional hydrogen gas production plants.

As a result, equipment investment for heating equipment, etc. can be greatly reduced, labor can be saved by eliminating the need for pure water replenishment, the equipment area can be reduced, and the power source using solar cells can be used as a power source. Since section 8 is a DC power source for electrolysis, running costs can be reduced by utilizing natural energy.

The hydrogen storage tank 19 and oxygen storage tank 21 described above may be built into the combustion section 10.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the piping configuration showing a conventional hydrogen gas production plant using a water electrolyzer, FIG. 2 is an explanatory diagram of the piping configuration of a heat source device according to the present invention, and FIG. FIG. 2 is a perspective explanatory diagram showing an installed state of a power supply section using a battery. 1...Water electrolyzer, 2...Pure water supply source, 3...Pure water, 4
…Supply piping, 6…Hydrogen piping, 7…Oxygen piping,
8... Power source section using solar cells, 8 ₃ ... Battery, 10... Combustion section, 11... Combustion chamber, 13... Heat exchange chamber, 14... Heat radiation path, 15... Pure water return path, 16...
Medium introduction pipe, 17...Heat supply pipe, 18...Heat demand destination, 19...Hydrogen storage tank, 21...Oxygen storage tank, B...Heating medium.

Claims (1)

[Scope of Claims] 1. A water electrolyzer having an anode and a cathode and a pure water supply source are connected by a supply pipe that supplies stored pure water from the supply source into the tank of the water electrolyzer, The positive and negative output terminals of a power supply section using a solar cell are connected to the anode and cathode, respectively, and the separately equipped combustion section is equipped with a combustion chamber and a heat exchange chamber, and the combustion chamber includes:
Hydrogen piping and distribution piping are connected to the water electrolyzer and lead out hydrogen gas and oxygen gas generated by the electrolysis of the pure water, respectively, and are connected to the heat radiation path installed inside the heat exchange chamber. One end is inside the combustion chamber,
It opens into the combustion chamber so that water vapor obtained by combustion of the hydrogen gas and oxygen gas supplied thereto can be introduced, and the other end communicates with the pure water supply source via a pure water return path, In addition, a medium introduction pipe through which a heat medium is introduced into the heat exchange chamber and a heat supply pipe through which the heat medium is led out after exchanging heat with the water vapor in the heat radiation path are connected, and the heat supply pipe is connected to the heat exchange chamber. A heat source device using a water electrolyzer using solar cells, which is piped to a heat demand destination. 2. A heat source device using a water electrolyzer using a solar cell according to claim 1, wherein the power supply section using a solar cell includes a battery that is charged by photovoltaic force generated by the solar cell. 3. Claim 1: Hydrogen gas and oxygen gas supplied from the water electrolyzer to the combustion chamber are supplied in a timely manner from a hydrogen storage tank and an oxygen storage tank, respectively, which are interposed in the hydrogen piping and the oxygen piping. A heat source device using a water electrolyzer using the solar cell described above.