JP5851341B2 - Hybrid power supply system - Google Patents

Description

The present invention relates to a hybrid power supply system using a solar water heater, a wind power generator, a solar power generator and the like in combination.

  Conventionally, so-called solar water heaters that generate hot water using the heat of sunlight are generally known, and are often used to meet the purpose of a power saving request. And with the trend of encouraging eco-saving in recent years, the utilization of wind power generators and solar power generators has been improving year by year.

  Here, first, the outline of the conventional configuration of the solar water heater will be described. A heat collecting material is applied to the outer periphery of a so-called glass tube to form a heat collecting tube, and a plurality of the heat collecting tubes are arranged side by side. Solar heat is absorbed by the heat collecting tube, the water in the heat collecting tube is heated, and a communicating portion is provided at the tip side, so that the gravity difference between hot water and cold water between the water in the hot water storage tank connected to the heat collecting tube is reduced. Utilizing this, the water in the hot water storage tank is circulated to finally generate hot water.

  However, in the conventional solar water heater, there is a problem that heat exchange efficiency is poor because heat is exchanged with water in the hot water storage tank, and it takes time until it is used as hot water.

  In addition, since the water in the hot water storage tank and the water in the heat collection pipe are in direct communication with each other, when the temperature falls at night, the heat collection pipe is cooled by the outside air and the heat easily escapes from the location of the heat collection pipe. There are also issues.

  Furthermore, since water pressure cannot be applied in the hot water storage tank, the water pressure on the outlet side serving as the outlet for hot water cannot be increased, so the so-called conventional power supply is installed at a high place, The current situation is that the hot water is sent out from the high place and used.

  Also, among the plurality of heat collecting tubes described above, if one heat collecting tube breaks due to, for example, one heat collecting tube breaking, the inside of the hot water storage tank and the plurality of heat collecting tubes communicate with each other. The water of the water leaks from the damaged part and becomes unusable.In addition, when the conventional solar water heater is used for a long period of time, a large amount of water remains inside the heat collecting tube, which reduces the heat collecting efficiency. There was a problem that it was difficult to clear the scale.

  Therefore, in recent years, so-called vacuum power supply has become mainstream. Here, the outline of the configuration of a so-called vacuum type solar water heater will be described. First, a heat pipe type heat collecting tube whose inside is formed in a vacuum is used as the heat collecting tube.

  That is, the type in which the inside of the hot water storage tank and the inside of the heat collecting pipe are not communicated, the end of the heat collecting pipe is brought into contact with one end surface of the hot water storage tank, and the water in the hot water storage tank is indirectly heated at that part. It is said.

  That is, the solar water heater employed in the present invention employs a structure in which a heat collecting tube formed in a vacuum efficiently collects solar energy and heats water by heat exchange based on the principle of a heat pipe with high heat transfer efficiency.

  In addition, the heat collecting tube formed in a vacuum is similar to the so-called thermos principle, and is not easily affected by the outside air temperature even in winter when sunlight is weak, and does not cool the hot water in the hot water storage tank.

  And since the hot water storage tank can be directly connected to the water pipe, it can also be used for hot water supply and showers that require so-called high water pressure. Furthermore, since air does not enter the hot water storage tank, the generated hot water can be managed in a sanitary manner.

  First, a heat solvent (for example, a heat transfer fluid) is hermetically sealed in a heat collecting tube formed in a vacuum. This heat transfer fluid is transferred by the solar solar energy from the inner surface of the heat collection tube, which is a glass tube, to, for example, aluminum heat transfer fins, and then to the heat pipe, and further to the heat transfer fluid in the copper tube, that is, the heat transfer fluid. Finally, the heat transfer liquid is vaporized to become steam.

The heat transfer fluid that has become steam is heat-exchanged with the water in the hot water storage tank and condensed (liquefied again). Water in the hot water storage tank is heated by the condensation heat at this time.
By sequentially repeating this phenomenon, the water in the hot water storage tank is heated.
The energy of water with an atmospheric pressure of 100 ° C is about 100 (kcal / kg), whereas the energy of steam with an atmospheric pressure of 100 ° C is said to be about 540 (kcal / kg). The energy of is released as heat of condensation and heated. Therefore, the heat transfer of “steam” vs. “water” has a heat transfer coefficient about 5 times that of heat transfer of “water” vs. “water”, so the heat transfer efficiency is very good. Even if the heat transfer area of the copper tube is small, the hot water storage tank can be sufficiently heated.

  By the way, in recent years, with the change in power situation resulting from disasters, for example, there is an increasing tendency to equip small wind power generators and small solar power generators together with the solar water heaters, for example, in personal houses, The power generated from these generators is used as much as possible, and so-called commercial power is used as much as possible to save power. The spread of the proposed circle is attracting a lot of attention.

Also, in recent years, the housing composition that has been working on disaster prevention measures in both housing complexes and private housing has gradually spread. For example, instead of erasing the rainwater that has fallen as it is, the rainwater can be used as a rainwater storage tank. After storing and purifying the rainwater with a purifier, devices such as showers and baths are used for domestic water other than drinking water. .

JP 05-79706 A

Thus, the present invention was created as part of making a so-called local production for local consumption type power supply system for power saving measures for commercial power that has been actively proposed in recent years, and uses a general commercial power source as much as possible. In addition, it is an object of the present invention to provide a hybrid power supply system that can be covered with its own power and that can be highly evaluated in terms of disaster prevention measures.

The hybrid power supply system according to the present invention is:
A heat collecting part that collects a plurality of heat collecting pipes formed by arranging a heat medium pipe and a heat collecting plate in a glass tube whose inside is evacuated, and collects solar heat, and the heat collecting part A solar water heater constituted by a hot water section in which the stored water is heated and stored by the solar heat collected in
An electric heater that is inserted into the hot water section and heats the internal hot water;
A wind power generator and / or a solar power generator,
A storage battery to which the generated power generated by the wind power generator and / or the solar power generator is charged;
A controller for controlling a destination of generated power generated by the wind power generator and / or the solar power generator;
A water heater controller that operates by obtaining a power source for operation from the controller;
A rainwater storage tank for disaster prevention, which purifies and stores rainwater,
A heat storage tank for storing heat using the thermal energy of the hot water generated by the solar water heater;
With
The controller has a full charge state confirmation unit for confirming a full charge state of the storage battery, and when the full charge state confirmation is made by the full charge state confirmation unit, from the wind power generator and / or the solar power generator. A destination switching unit for switching the destination of the generated power from the storage battery side to the electric heater side;
For the solar water heater, when the temperature of the hot water stored in the hot water section is below a temperature of about 36 degrees, an emergency state confirmation unit that transmits a confirmation signal to notify the emergency state;
Have
When the emergency state confirmation unit confirms that the temperature is below the temperature of about 36 degrees, the power transmission from the wind power generator and / or solar power generator is switched to the electric heater for use. It is configured to send a signal to the destination switching unit,
The installed solar water heater can provide the desired hot water without interruption,
The disaster-use rainwater storage tank stores rainwater that has rained, purifies the water, supplies water to the storage tank of the solar water heater through an on- off valve, and uses the solar water heater as hot water for showers and baths. So that it can be used as hot water,
After taking out the heat energy in the heat storage tank and storing the heat, the low temperature hot water from which the heat energy was taken out is returned to the solar water heater and becomes high temperature hot water,
The thermal energy stored in the heat storage tank is used as a heat source for panel heaters laid on the floor of the house,
The water heater controller is a power supply for operating an on-off valve in a delivery pipe that mixes rainwater purified in the rainwater storage tank for disaster prevention with tap water and sends it to a bath or shower side, hot water generated by a solar water heater Operating power for the open / close valve of the delivery pipe that sends the water to the heat storage tank and the operating power of the water level sensor that detects the water level of the hot water part in the solar water heater, and control the open / close valve and the water level sensor,
In the controller, the purified water stored in the disaster prevention storage tank is sent to the tap water side in an emergency, and the operation power is supplied to operate the pump that sends the hot water generated by the solar water heater to the heat storage tank. ,
It is characterized by
Or
The thermal energy stored in the heat storage tank is used as a heat source for a panel heater, or used as a power source for a Stirling engine as a generator.
It is characterized by
The controller is configured to supply electric power generated by a wind power generator or a solar power generator to household appliances as household AC power,
It is characterized by this.

With the hybrid power supply system according to the present invention, a wind power generator, a solar power generator, and a heat storage tank can be provided together with a solar water heater, and a system that can use these generated power and thermal energy without waste can be constructed. At the same time, for example, even in an area that is installed in a cold region and tends to be relatively insufficient in capturing solar heat, it is possible to use, for example, the generated power from the various generators installed in advance so that a solar water heater As a part of creating a power supply system for commercial power saving that has been actively proposed in recent years, it is possible to supply hot water from solar water heaters at low cost in any region. It is an excellent system that can be covered with your own power without using general commercial power as much as possible, and can be highly evaluated in terms of disaster prevention. Achieve the results.

It is explanatory drawing which shows schematic structure of the hybrid type electric power supply system which concerns on this invention. It is explanatory drawing explaining schematic structure of the hybrid type solar water heater by this invention. 1 is a block diagram showing a schematic configuration of a hybrid power supply system according to the present invention. It is explanatory drawing explaining schematic structure of the conventional solar water heater.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

  FIG. 1 is an explanatory diagram for explaining a schematic configuration of the present invention.

  Reference numeral 1 denotes a heat collecting tube according to the present invention. Although details of the heat collecting tube 1 are not shown, a heat medium tube and a heat collecting tube in which a heat medium liquid is enclosed in a glass tube whose inside is evacuated. And a plate.

  And the heat collecting part 2 which heat-collects solar heat by arranging this heat collecting tube 1 in parallel is comprised.

  Reference numeral 3 denotes a hot water storage unit that is a hot water storage tank in which stored water is heated and stored by the heat of solar heat collected by the heat collection unit 2, and the solar water heater 4 of the present invention. Is basically composed of the heat collecting section 2 and the hot water section 3.

  Reference numeral 5 denotes a wind power generator provided alongside the solar water heater 4, and generated power is generated when a so-called vertical axis type windmill 6 shown in the figure rotates by receiving wind. Here, the vertical axis type wind turbine 6 that can be installed without taking up a space and efficiently generates power by rotating even in a relatively light wind is not limited to this wind turbine, but other configurations A windmill made of may be used.

  Reference numeral 7 denotes a solar power generator, which receives sunlight by a solar panel and can generate generated power. The solar power generator 7 is also rapidly spreading in recent years, and is often installed close to the solar water heater 4 in the system of the present invention.

  Reference numeral 8 denotes a controller. The controller 8 supplies electric power generated from the wind power generator 5 or the solar power generator 7 to the storage battery 10 via an AC / DC converter 9 installed in some cases. It is configured so that it can be sent out at any time.

  When the storage battery 10 is in a fully charged state, it is not charged even if the generated power from the wind power generator 5 or the solar power generator 7 is sent to the storage battery 10. However, it also means that the power generated from the wind power generator 5 or the solar power generator 7 that has generated the corner power is completely wasted.

  Therefore, in such a case, the controller 8 is operated so that the generated power from the wind power generator 5 or the solar power generator 7 that has generated the corner power is not wasted. It is configured to send to the side. That is, an electric heater 13 is attached in the hot water section 3 of the solar water heater 4 as shown in the figure. For example, when the storage battery 10 is fully charged, the wind power generator 5 and the solar The power generated from the generator 7 is used for the electric heater 13.

  Therefore, these controls are performed by the controller 8 as described above. The configuration of the controller 8 will be described with reference to FIG. 3. In addition to the AC / DC converter 9 described above, the controller 8 receives a detection signal 11 from the storage battery 10 to detect the full charge state, A full charge state confirmation unit 12 for confirming the charge state, and when the full charge state confirmation unit 12 confirms the full charge state, a destination of generated power from the wind power generator 5 or the solar power generator 7 Is configured to have a destination switching unit 14 that switches the storage battery 10 side to the electric heater 13 side.

  For example, when the wind is strong, the vertical axis wind turbine 6 rotates rapidly and vigorously, thereby causing the wind power generator 5 to perform a powerful power generation operation and a large amount of generated power is sent to the storage battery 10. Then, the storage battery 10 is immediately in a fully charged state, and thereafter, even if the generated power is sent from the wind power generator 5 side to the storage battery 10 side, it is not charged and the generated power from the wind power generator 5 side is wasted. Will happen.

  Therefore, at this time, the full charge confirmation unit 12 detects the full charge state of the storage battery 10 and sends a switching signal to the transmission destination switching unit 14 in order to smoothly switch the transmission destination of the generated power. Thus, the generated power is sent by quickly switching the destination of the generated power from the storage battery 10 side to the electric heater 13 side.

Then, the electric heater 13 is used as electric power for heating the hot water in the hot water section 3 of the solar water heater 4, and the generated electric power that has been generated in vain as before is not wasted at all. It can be consumed effectively.
Reference numeral 15 denotes an emergency state confirmation unit. For example, when the solar water heater 4 according to the present invention is installed in an area where a large amount of snow falls, there is a case where the solar heat is relatively small and a large amount of solar heat cannot be obtained.

In such a case, when the temperature of the hot water unit 3 stored in the hot water unit 3 is lower than a predetermined temperature, for example, approximately around 36 degrees Celsius, a confirmation signal for notifying an emergency state is transmitted. Make up.

And when the emergency condition confirmation part 15 receives the confirmation signal , for example, the confirmation signal which consists of the content that it is less than about 36 degrees Celsius, the generated electric power from the wind power generator 5 or the solar power generator 7 is used. A signal is transmitted to the destination switching unit 14 so as to switch to the electric heater 13 for use.

Thereby, even when the solar water heater 4 according to the present invention is installed in an area where a large amount of solar heat cannot be obtained, such as an area where a large amount of snow falls, a desired high temperature hot water can be obtained without interruption. Can be generated and provided.
In addition, although the case where the generated electric power from the wind power generator 5 or the solar power generator 7 is insufficient for the generation of high-temperature hot water is assumed, in such a case, the electric power from the storage battery 10 is used as the electric heater 13 side. It can also be configured to be sent out.

  Next, reference numeral 16 denotes a rainwater storage tank for disaster prevention. For example, rainwater that has rained on the roof is stored without wasting, purified water through the water purification agent 17, and then hot water for showers and baths in an emergency. It can be used as

In the event of an unexpected disaster, water supply and electricity may stop, and it is important to store rainwater and the like without escaping as usual.
In this invention, the rainwater storage tank 16 for disaster prevention mentioned above was installed, and it was comprised so that it could be stored and used without flowing rainwater.

Reference numeral 19 denotes a heat storage tank. The heat storage tank 19 uses hot water generated by the solar water heater 4 and extracts thermal energy of the hot water.
And the low temperature hot water from which the thermal energy was taken out is returned again to the hot water section 3 of the solar water heater 4 to become high temperature hot water.

  Here, the heat energy stored in the heat storage tank 19 is used as, for example, an electric heat source of a panel heater laid on the floor surface of a house, or a Stirling engine that has recently attracted attention as a third generator. For example, the Stirling engine can be operated by using the heat energy, and the generated power can be generated by the Stirling engine.

In FIG. 1, reference numeral 20 denotes a water heater controller, and the water heater controller 20 operates by obtaining a power source for operation from the controller 8. The rainwater purified by the disaster-use rainwater storage tank 16 is mixed with tap water and sent to the bath or the shower side. Electric power for operating the on-off valve 21 in the delivery pipe, or hot water generated by the solar water heater 4 the sending operating power, such as operating power of the water level sensor 22 for detecting the water level of the hot water section 3 in close valve 21 for operating power and solar water heaters 4 delivery pipe for delivering the heat storage tank 19, the water heater controller 20 The on-off valve 21 and the water level sensor 22 are controlled.

  In the controller 8, the purified water stored in the disaster prevention storage tank 16 is sent to the tap water side in an emergency, or when hot water is generated by the solar water heater 4, the hot water is sent to the heat storage tank 19. It also supplies operating power to operate the pumps.

Further, as understood from FIG. 1, the controller 8 is configured so that the generated power generated by the wind power generator 5 or the solar power generator 7 can be supplied to indoor electrical appliances as, for example, AC 100 V household AC power. It is. When the power generated by the wind power generator 5 or the solar power generator 7 cannot be covered, the power stored from the storage battery 10 can be used. In this case, the power from the storage battery 10 is DC / AC converted by the DC / AC converter and supplied to the indoor AC power appliance. Here, there are various kinds of indoor appliances such as a microwave oven, an air conditioner, a pot, a rice cooker, a washing machine, a dryer, and a personal computer.

DESCRIPTION OF SYMBOLS 1 Heat collecting pipe 2 Heat collecting part 3 Hot water part 4 Solar water heater 5 Wind power generator 6 Vertical axis type windmill 7 Solar power generator 8 Controller 9 AC / DC converter 10 Storage battery 11 Detection signal 12 Full charge state confirmation part 13 Electric heat Heater 14 Destination switching unit 15 Emergency state confirmation unit 16 Rainwater storage tank 17 for disaster prevention Water purification material 18 Emergency pump 19 Heat storage tank 20 Water heater controller 21 On-off valve 22 Water level sensor

Claims (3)

A heat collecting part that collects a plurality of heat collecting pipes formed by arranging a heat medium pipe and a heat collecting plate in a glass tube whose inside is evacuated, and collects solar heat, and the heat collecting part A solar water heater constituted by a hot water section in which the stored water is heated and stored by the solar heat collected in
An electric heater that is inserted into the hot water section and heats the internal hot water;
A wind power generator and / or a solar power generator,
A storage battery to which the generated power generated by the wind power generator and / or the solar power generator is charged;
A controller for controlling a destination of generated power generated by the wind power generator and / or the solar power generator;
A water heater controller that operates by obtaining a power source for operation from the controller;
A rainwater storage tank for disaster prevention, which purifies and stores rainwater,
A heat storage tank for storing heat using the thermal energy of the hot water generated by the solar water heater;
With
The controller has a full charge state confirmation unit for confirming a full charge state of the storage battery, and when the full charge state confirmation is made by the full charge state confirmation unit, from the wind power generator and / or the solar power generator. A destination switching unit for switching the destination of the generated power from the storage battery side to the electric heater side;
For the solar water heater, when the temperature of the hot water stored in the hot water section is below a temperature of about 36 degrees, an emergency state confirmation unit that transmits a confirmation signal to notify the emergency state;
Have
When the emergency state confirmation unit confirms that the temperature is below the temperature of about 36 degrees, the power transmission from the wind power generator and / or solar power generator is switched to the electric heater for use. It is configured to send a signal to the destination switching unit,
The installed solar water heater can provide the desired hot water without interruption,
The disaster-use rainwater storage tank stores rainwater that has rained, purifies the water, supplies water to the storage tank of the solar water heater through an on- off valve, and uses the solar water heater as hot water for showers and baths. So that it can be used as hot water,
After taking out the heat energy in the heat storage tank and storing the heat, the low temperature hot water from which the heat energy was taken out is returned to the solar water heater and becomes high temperature hot water,
The thermal energy stored in the heat storage tank is used as a heat source for panel heaters laid on the floor of the house,
The water heater controller is a power supply for operating an on-off valve in a delivery pipe that mixes rainwater purified in the rainwater storage tank for disaster prevention with tap water and sends it to a bath or shower side, hot water generated by a solar water heater Operating power for the open / close valve of the delivery pipe that sends the water to the heat storage tank and the operating power of the water level sensor that detects the water level of the hot water part in the solar water heater, and control the open / close valve and the water level sensor,
In the controller, the purified water stored in the disaster prevention storage tank is sent to the tap water side in an emergency, and the operation power is supplied to operate the pump that sends the hot water generated by the solar water heater to the heat storage tank. ,
A hybrid power supply system characterized by that.
The thermal energy stored in the heat storage tank is used as a heat source for a panel heater, or used as a power source for a Stirling engine as a generator.
The hybrid power supply system according to claim 1.
The controller is configured to supply electric power generated by a wind power generator or a solar power generator to household appliances as household AC power,
The hybrid power supply system according to claim 1 or 2, characterized in that

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