Hot water supply system

Abstract

To provide a hot water supply system in which a wide light receiving area is provided for a solar power generation device and a solar water heater.SOLUTION: A hot water supply system 1 comprises a solar water heater 15 having a heat collector 15a, and a solar power generation device 17. A light receiving unit 17a of the solar power generation device 17 is made of a translucent material, and is provided in a position facing the heat collector 15a.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a hot water supply system using a solar water heater.

Background Art

[0002] Conventionally, as disclosed in Patent Document 1, a container equipped with a solar power generation device and a solar water heater has been proposed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when installing a solar water heater and a solar power generation device, it is necessary to reduce the respective dimensions so that the collector of the solar water heater and the light-receiving part of the solar power generation device do not overlap.

[0005] Therefore, an object of the present invention is to provide a hot water supply system in which the light-receiving areas of a solar power generation device and a solar water heater are widely provided.

Means for Solving the Problems

[0006] The hot water supply system according to the present invention includes a solar water heater having a collector and a solar power generation device. The light-receiving part of the solar power generation device is made of a light-transmitting material and is provided at a position facing the collector.

[0007] The light-receiving part of the solar power generation device can be superimposed on the light-receiving surface of the collector of the solar water heater. Thereby, it becomes possible to receive sunlight in a wide area (the light-receiving surface of the collector of the solar water heater, the light-receiving part of the solar power generation device) and supply hot water and electric power to the hot water supply room.

[0008] Preferably, the light receiving part is used as a member that covers the heat collector and protects the heat collector.

[0009] It becomes possible to utilize the light receiving part and provide a member that covers the heat collector and protects the heat collector without separately providing a transparent body.

[0010] Also preferably, the light receiving part is provided at a position where it sandwiches a transparent body that covers the heat collector and protects the heat collector together with the heat collector. The light receiving part has a lower light transmittance than the transparent body.

[0011] By attachment or the like, it can be attached to the transparent body of an existing solar water heater, and the superposition of the solar water heater and the solar power generation device can be easily achieved. Compared with a form in which only a normal transparent body is provided, heat is accumulated in the light receiving part, and the time for forming hot water can be lengthened.

[0012] Also preferably, the hot water supply system further includes a pump that performs at least one of supplying cold water to the solar water heater and supplying hot water from the solar water heater. The power supply to the pump is performed based on the power obtained by the solar power generation device.

[0013] Flow rate control regarding the supply of water to the solar water heater and the supply of hot water produced by the solar water heater can be realized without relying on an external power source.

Advantages of the Invention

[0014] As described above, according to the present invention, it is possible to provide a hot water supply system in which the light receiving areas of the solar power generation device and the solar water heater are widely provided.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0016] Hereinafter, the first embodiment will be described with reference to the drawings. Note that the embodiments are not limited to the following embodiments. In addition, the content described in one embodiment is generally applicable to other embodiments as well. Also, each embodiment and each modification can be combined as appropriate.

[0017] The hot water supply system 1 in the first embodiment includes a housing 10, a hot water supply chamber 11, a solar water heater 15, a water storage tank 16, a pump 16a, a solar power generation device 17, a battery 18, a power generation device 21, and a fuel tank 22 (see FIGS. 1 to 4).

[0018] To indicate directions, one of the horizontal directions is taken as the x direction, the horizontal direction perpendicular to the x direction is taken as the y direction, and the vertical direction perpendicular to the x direction and the y direction is taken as the z direction.

[0019] The housing 10 holds the hot water supply chamber 11, the solar water heater 15, the water storage tank 16, the pump 16a, the solar power generation device 17, the battery 18, the power generation device 21, and the fuel tank 22.

[0020] The hot water supply chamber 11 has a water discharge port 11a for discharging the hot water heated by the solar water heater 15, a drain port 11b for discharging the liquid discharged into the hot water supply chamber 11 to the outside (such as a sewer), an electric device (for example, a lighting fixture) 11c driven based on the electric power supplied from any of the solar power generation device 17, the battery 18, and the engine generator 21, and an entrance / exit 11d. For example, a shower room, a toilet, a bathroom, a washbasin, etc. can be considered (see Fig. 4). A plurality of hot water supply chambers 11 may be provided.

[0021] The solar water heater 15 is a device that heats cold water by solar heat, and has a heat collector 15a that collects solar heat and generates hot water, a hot water storage tank 15b that stores the hot water generated by the heat collector 15a, and a pedestal 15c that supports the lower part of the hot water storage tank 15b.

[0022] The water storage tank 16 stores the cold water supplied from a faucet or the like that discharges tap water and supplies it to the heat collector 15a via the pump 16a. The pump 16a supplies at least one of the supply of cold water to the solar water heater 15 and the supply of hot water from the solar water heater 15.

[0023] The solar power generation device 17 is a device that generates electricity based on sunlight, and a light receiving part 17a is arranged on an inclined surface. The light receiving part 17a is composed of a light transmissive member and is provided at a position facing the heat collector 15a. In the first embodiment, the light receiving part 17a covers the light receiving surface of the heat collector 15a and is used as a member to protect the light receiving surface of the heat collector 15a, and the transparent body 17d shown in the second embodiment is omitted.

[0024] The electric power obtained by the solar power generation device 17 is stored in the battery 18 or used for driving the electric device 11c and the pump 16a.

[0025] The engine generator 21 is a device that generates electricity based on the combustion of fuel supplied from the fuel tank 22. For example, a gas generator that generates electricity based on the combustion of gas (fuel) supplied from a gas cylinder (fuel tank 22) can be considered, and it is mainly used when the power supply from the solar power generation device 17 is insufficient.

[0026] Note that the electric power obtained by the solar power generation device 17, the electric power stored in the battery 18, and the electric power obtained by the engine power generation device 21 are not only used to drive the electrical equipment (for example, the electrical equipment 11c) in the hot water supply system 1, but may also be supplied to external electrical equipment or transmitted (sold) to the commercial power supply.

[0027] (Effect of using the light receiving part 17a composed of a light transmissive member) The light receiving part 17a of the solar power generation device 17 can be superimposed on the light receiving surface of the heat collector 15a of the solar water heater 15. Thereby, it becomes possible to receive sunlight in a wide area (the light receiving surface of the heat collector 15a of the solar water heater 15, the light receiving part 17a of the solar power generation device 17) and supply hot water and electric power to the hot water supply chamber 11.

[0028] (Effect of using the light receiving part 17a as the transmissive body 15d) The light receiving part 17a can be utilized, and it becomes possible to provide a member that covers the heat collector 15a and protects the heat collector 15a without separately providing the transmissive body 15d.

[0029] (Effect of driving the pump 16a with the electric power obtained by the solar power generation device 17) Flow rate control regarding the supply of water to the solar water heater 15 and the supply of the hot water produced by the solar water heater 15 can be achieved without relying on an external power source.

[0030] (Application example of the light receiving part 17a) In the first embodiment, an example of using the light receiving part 17a as the transmissive body 15d has been described. However, the light receiving part 17a may be attached on the transmissive body 15d by pasting or the like (see Fig. 5, second embodiment). In this case, the transmissive body 17d is sandwiched between the light receiving part 17a and the heat collector 15a. Also, the light receiving part 17a has a lower light transmittance than the transmissive body 15d.

[0031] (Effect of providing the light-receiving part 17a on the transparent body 15d) By attachment or the like, it can be attached to the transparent body 15d of the existing solar water heater 15, and the superposition of the solar water heater 15 and the solar power generation device 17 can be easily achieved. Compared with the form in which only the normal transparent body 15d is provided, heat is accumulated in the light-receiving part 17a, and the time for forming hot water can be lengthened.

[0032] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalent scope thereof.

Explanation of reference numerals

[0033] 1 Hot water supply system 10 Housing 10 11 Hot water supply chamber 11a Water outlet 11b Drain outlet 11c Electrical equipment 11d Entrance / exit 15 Solar water heater 15a Collector 15b Hot water storage tank 15c Stand 15d Transparent body 16 Water storage tank 16a Pump 17 Solar power generation device 17a Light-receiving part 18 Battery 21 Power generation and power generation device 22 Fuel tank

Claims

1. A solar water heater having a collector, and a solar power generation device, comprising a hot water supply system, wherein a light receiving part of the solar power generation device is made of a light transmissive material and is provided at a position facing the collector.

2. The hot water supply system according to claim 1, wherein the light receiving part covers the collector and is used as a member for protecting the collector.

3. The hot water supply system according to claim 1, wherein the light receiving part is provided at a position where a transparent body that covers and protects the collector is sandwiched between the light receiving part and the collector, and the light receiving part has a lower light transmittance than the transparent body.

4. The hot water supply system according to any one of claims 1 to 3, further comprising a pump that performs at least one of supplying cold water to the solar water heater and supplying hot water from the solar water heater, wherein power supply to the pump is performed based on electric power obtained by the solar power generation device.

Images