JP2648272B2 - Thermal wastewater power generation method and apparatus using thermocouple - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for generating hot waste water using a thermocouple, and more particularly to a hot waste water generation using a thermocouple for efficiently converting waste heat of hot waste water discharged from a heat utilization facility into electric power. Method and apparatus.

[0002]

2. Description of the Related Art Heretofore, the following devices have been proposed as power generation devices using thermoelectric elements. (1) Sorapondo thermoelectric generator: As shown in FIG. 5, the hot water (about 360 ° K) of the heat storage layer L ₃ in which solar energy is stored in Sorapondo 34 and pump 35 from the underground water source U
The thermoelectric generator 2 uses a temperature difference between the irrigation water F (approximately 290 ° K) pumped by the generator, and drives a pump 35 with electric power obtained by power generation. Solar pound in figure
In 34, L ₁ represents a surface layer, L ₂ denotes a non-convective layer. (2) Ocean temperature difference power generator: As shown in Fig. 6, the upper warm seawater S (about 300K) and the deep cold seawater D (about 280K) with a depth of about 1000m are pumped by the pump 35. The thermoelectric generator 2 converts a temperature difference between the two into an electromotive force using the thermocouple module 20.

[0003]

However, the above-mentioned conventional power generation device using a thermoelectric element requires (1) the construction of a large device for power generation, and (2) a device for circulating hot and cold water. Needed to be powered externally for

Accordingly, an object of the present invention is to provide a method and an apparatus for generating hot waste water using a thermocouple without using a chilled water circulation pump.

[0005]

SUMMARY OF THE INVENTION The present inventor has proposed that the energy of hot waste water discharged from a heat use facility is brought into contact with the other end of a thermocouple, one end of which contacts cold water supplied without a chilled water pump. It was noted that the efficiency of conversion of waste heat to electric power can be improved by recovering it as electric power. With reference to the embodiment shown in FIGS. 1 and 2, a method for generating hot waste water using a thermocouple according to the present invention will be described. The hot waste water H from the heat use equipment is caused to flow into the first flow path 5 inside the inner cylinder 4, and one end of the thermocouple 10 is brought into contact with the outer peripheral surface of the inner cylinder 4 while being electrically insulated. 4, an intermediate cylinder 7 is provided concentrically with the inner cylinder 4 with a thermocouple 10 therebetween, and the other end of the thermocouple 10 is brought into contact with the inner peripheral surface of the intermediate cylinder 7 while being electrically insulated. The second flow path 6 is provided outside the intermediate cylinder 7.
The outer cylinder 3 is provided concentrically with the intermediate cylinder 7 with the
Rotary member driven by the flow of hot water H
For example, a blade 24 with a horizontal shaft 23) is provided, and transmission means (for example, teeth
Through the vehicle device 26 and the radial axis of rotation or vertical axis 25)
And the blade 24 driven by the rotating member is set in the second flow path 6.
The cold water C is caused to flow into the second flow path 6 by the blade 23,
Due to the temperature difference between hot waste water H and cold water C
An electromotive force is generated.

The thermocouple 10 has two types of thermoelectric elements 11 and 12, a connecting portion 13 in which one end is directly connected to the thermoelectric element 11, and the other end 19.
The coupling portion 13 may be formed with the coupling electrode 14 interposed. For example, as shown in FIG.
Electrically contacted to insulate the coupling electrode 14 on the outer peripheral surface of the inner tubular member 4. Also, the other end of the thermoelectric element 11 (12) of each thermocouple 10
The connection electrode 15 connecting the 19 and the other end 19 of the thermoelectric element 11 (12) of the adjacent thermoelectric element 10 is brought into contact with, for example, the inner peripheral surface of the intermediate cylinder 7 while being electrically insulated. Further, in the illustrated example, the other end 19
Of the thermocouple 10 is not limited to the other end 19 or the connection electrode 15 in the illustrated example.

Referring to the embodiment of FIG. 2, a power generator 1A using a thermocouple according to the present invention has an inner cylinder 4 having a first flow path 5 inside, and a gap outside the inner cylinder 4 through a gap. An intermediate cylinder 7 provided concentrically, one end (in the illustrated example, a connecting portion in the illustrated example) that is disposed in the gap and electrically insulates and contacts the outer peripheral surface of the inner cylinder 4.
13) and the other end 19 electrically insulated and in contact with the inner peripheral surface of the intermediate cylindrical body 7 and an output portion of the generated electromotive force (the connection electrode in the illustrated example).
15); an output terminal 17 connected to the output section (the connection electrode 15 in the illustrated example); an outer cylindrical body provided concentrically outside the intermediate cylindrical body 7 with the second flow path 6 therebetween. It includes a 3
In the power generation device using a thermocouple, the inner cylinder 4 and the outer
The first flow path 5 and the second flow path 6 are coaxially coupled to the cylindrical body 3.
Inner cylinder 4A and outer cylinder 3A forming an extension; inner cylinder
The gear held by the support arm 16 fixed to the inner cylinder at the inner position of 4
Box 26; blades protruding from gear box 26 in the axial direction of inner cylinder 4
Horizontal shaft 23 with 24; inner cylindrical body 4 is suspended from gear box 26 in a watertight manner
Drives according to the rotation of the horizontal shaft 23 in the gear box 26
Vertical axis 25; and extension of the second flow path 6 of the vertical axis 25
It has a blade 24 attached to the inner part and extends the first flow path 5.
When the fluid H flows through the long part, the horizontal shaft 23 with wings is rotated.
And the rotation of the vertical axis 25 corresponding to the rotation of the horizontal axis 23
The rotation of the inner blade 24 of the extension of the second flow path 6 causes the second flow path 6 to rotate.
Is driven in the axial direction of the inner cylinder 4.
Things.

[0008]

The operation of the present invention will be described with reference to FIG. FIG.
The thermocouple 10 shown in FIG. 1A includes, for example, a first thermoelectric element 11 and a second thermoelectric element 12. One end of each of the thermoelectric elements 11 and 12 is connected to form a connecting portion 13. Output terminal 17 to terminal 19
And the other end of each thermoelectric element 11, 12
19 was kept at the same temperature. In the figure, the dotted frame indicates that the two other ends 19 are kept at the same temperature. When the coupling portion 13 and the two other ends 19 are kept at different temperatures T1 and T2, an electromotive force V is generated at the two output terminals 17 by the Seebeck effect. In the embodiment of FIG. 2, the flow of hot waste water H
Rotary member provided with a blade 24 with a horizontal shaft 23 driven by
And The gear device 26 provided in the first flow path 5 and the second flow path 6
The transmission means is constituted by a vertical shaft 25 extending at
The blade 24 is attached to the inside of the second flow path 6 of the
It is driven by a rotating member via the transmission means. Vertical axis 25
The rotation of the upper blade 24 allows the cold water C to flow into the second flow path 6
You. In the thermocouple 10, the connecting portion 13 is connected to the outer periphery of the inner cylindrical body 4.
Heat is taken from the hot waste water H flowing through the first flow path 5 by contact with the surface.
To maintain the temperature high, and connect the other end 19 to the inside of the intermediate cylinder 7.
Heat is applied to the cold water C flowing through the second flow path 6 by contacting the peripheral surface.
To keep the temperature low, and the output
An electromotive force V is generated in the child 17.

In order to efficiently generate electric power using a thermoelectric element using the temperature difference between hot water and cold water, it is necessary to use hot water and cold water as flowing water, respectively. The hot wastewater H discharged from the heat use facility has a considerable flow velocity, and thus does not require power for hot water circulation. If natural flowing cold water such as river running water or flowing seawater is used as the cold water C, the cold water C
The power for circulation can be omitted.

FIGS. 2 and 3 show a chilled water circulating device 9 according to the present invention which utilizes the kinetic energy of the hot waste water H for circulating the chilled water C. FIG. In the chilled water circulation device 9 shown in FIG. 3, the inner cylinder 4A and the outer cylinder are coaxially coupled with the inner cylinder 4 and the outer cylinder 3.
An extension of the first flow path 5 and the second flow path 6 is formed by 3A. The gear box 26 is placed at a predetermined position inside the inner cylinder 4A.
The horizontal shaft 23 with the blades 24 is held by the support arm 16 fixed at 4A, and protrudes from the gear box 26 in the axial direction of the inner cylinder 4A. A vertical shaft 25 is provided by vertically penetrating the inner cylindrical body 4A from the gear box 26 in a watertight manner, and the vertical shaft 25 is driven by the rotation of the horizontal shaft 23 in the gear box 26. A blade is provided on the vertical shaft 25 inside the extension of the second flow path 6.
Install 24. When the hot waste water H flows through the extension of the first flow path 5, the horizontal shaft 23 with the blades is rotated by the flow of the hot waste water H, and the second flow path 6 is extended by the rotation of the vertical shaft 25 corresponding to the horizontal rotation. Due to the rotation of the blades 24 in the section, the fluid, for example, cold water C in the extension of the second flow path 6 is removed from the inner cylinder 4A.
In the axial direction. That is, the flow of the cold water C in the extension of the second flow path 6 is generated by using the kinetic energy of the hot waste water H flowing in the extension of the first flow path 5. Preferably, in the chilled water circulation device 9, the suction port 30 and the discharge port 31 formed in the outer cylinder 3A with a gap in the axial direction of the inner cylinder 4A, and the second
An annular partition wall 18 is provided between the inner cylindrical body 4A and the outer cylindrical body 3A that divides the extension of the flow path 6 between the suction port 30 and the discharge port 31. Inner cylinder on one side
Hold at 4A internal position.

In the present invention, there is no need to externally supply power for circulating cold water. Accordingly, the object of the present invention is to provide "a method and apparatus for generating hot wastewater using a thermocouple without using a cold water circulation pump".

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the power generator of the present invention shown in FIG.
After a plurality of thermoelectric elements 10 shown in (B) are arranged in a predetermined planar shape, for example, to form the module 20 of FIG.
The coupling electrode 14 is electrically insulated and in contact with the outer peripheral surface of the inner cylinder 4, and the connection electrode 15 is electrically insulated and in contact with the inner peripheral surface of the intermediate cylinder 7. Inner peripheral surface of inner cylinder 4 and intermediate cylinder 7
Are provided on the outer peripheral surface of the fin 8 for improving the heat exchange efficiency between the hot waste water H and the cold water C.

FIG. 4 shows another embodiment of the chilled water circulation device 9. Also in the embodiment of FIG. 4, the extension of the first flow path 5 and the second flow path 6 by the inner cylinder 4A and the outer cylinder 3A coaxially coupled to the inner cylinder 4 and the outer cylinder 3. To form A part of the inner cylinder 4A is made to be a rotatable cylinder 27 rotatably supported by a circumferential watertight bearing 22 formed on the inner cylinder 4A at an axial interval. A radial blade 28 is fixed inside the rotary cylinder 27, and a water feed blade 29 is provided on the outer peripheral surface of the rotary cylinder 27.
To form When the warm drainage H flows through the extension of the first flow path 5, the rotary cylinder 27 with the radial vanes 28 is rotated by the flow of the warm drainage H, and the rotation of the water feed vane 29 on the outer peripheral surface of the rotary cylinder 27 causes the rotation. The fluid in the extension of the two flow paths 6 is driven in the axial direction. Preferably, the suction port 30 and the discharge port 31 formed in the outer cylinder 3A with a gap in the axial direction of the inner cylinder 4A,
An annular partition wall 18 is provided between the inner cylindrical body 4A and the outer cylindrical body 3A that divides the extension of the flow path 6 between the suction port 30 and the discharge port 31. Is formed on at least one side. More preferably, the water feed blade 29 is a spiral blade.

FIG. 2 shows the power generator 1A of FIG. 1 and FIG.
An embodiment of the hot water drainage power generator 1 in combination with the cold water circulation device 9 of FIG. Even when the cold water C flowing in an appropriate form cannot be used, efficient energy exchange is possible without the use of the cold water pump by combining the water circulating device 9 and the power generation efficiency can be improved. .

[0015]

As described in detail above, the method and apparatus for generating hot wastewater using thermocouples of the present invention perform hot wastewater generation using thermocouples without using a chilled water circulation pump. It works. (1) Since the structure is simple, manufacture is easy. (2) Since the power generation device and the chilled water circulation device are used in combination in a unit type, efficient installation is possible. (3) It can be easily installed on existing hot water drainage facilities. (4) Since no external power is required, power generation efficiency can be improved. (5) Maintenance work can be easily performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of one embodiment of the present invention.

FIG. 2 is an explanatory diagram of another embodiment of the present invention.

FIG. 3 is an explanatory view of an embodiment of the circulation device of the present invention.

FIG. 4 is an explanatory view of another embodiment of the circulation device of the present invention.

FIG. 5 is an explanatory diagram of a thermoelectric generator combined with a solar pond.

FIG. 6 is an explanatory diagram of a thermoelectric generator using an ocean temperature difference.

FIG. 7 is a schematic explanatory diagram of a thermocouple.

[Explanation of symbols]

1, 1A hot water drainage generator 2 thermoelectric generator 3
Outer cylinder 3A Outer cylinder 4 Inner cylinder 3B
Inner cylinder 5 First flow path 6 Second flow path 7
Intermediate cylinder 8 Fin 9 Chilled water circulation device 10
Thermocouple 11 First thermoelectric element 12 Second thermoelectric element 13
Connection part 14 Connection electrode 15 Connection electrode 16
Support arm 17 Output terminal 18 Partition wall 19
Other end 20 Module 21 Connection flange 22
Watertight bearing 23 Horizontal shaft 24 Blade 25
Vertical shaft 26 Gear unit 27 Rotating cylinder 28
Radiation blade 29 Spiral blade 30 Inlet 31
Discharge port 34 Solar pond 35 Pump 36
Circulation pump.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Katsuta Ota 2-9-1-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Corporation, Technical Research Institute

Claims (8)

(57) [Claims] 1. A hot waste water from a heat use facility is caused to flow into a first flow path inside an inner cylindrical body, and one end of a thermocouple is brought into contact with an outer peripheral surface of the inner cylindrical body by electrically insulating one end thereof. An intermediate cylinder is provided concentrically with the inner cylinder with the thermocouple provided outside the cylinder, and the other end of the thermocouple is electrically insulated and brought into contact with the inner peripheral surface of the intermediate cylinder, A second outside of the intermediate cylinder
An outer cylinder is provided concentrically with the intermediate cylinder with a flow path therebetween,
A rotating member driven by a flow of hot waste water in the first flow path
Which is driven by the rotating member via transmission means.
Blades are provided in the second flow path, and the blades
Flowing into the second flow path, and the temperature difference between the hot waste water and the cold water
A method for generating hot waste water using a thermocouple , wherein an electromotive force is generated between both ends of the thermocouple. 2. A thermal discharge power generation method according to claim 1, before
The rotation member of the first flow path is horizontally rotated on the center axis of the flow path.
A rotating blade with a shaft, and the transmission means of the horizontal rotating shaft
The transmission between rotation and the radial axis of rotation reaching the second flow path
A dynamic gear device, wherein the blades of the second flow path are rotated in the radial direction;
A hot water drainage power generation method using a thermocouple as a blade attached to a portion of the spindle in the second flow path . 3. The method according to claim 1, wherein
The inner cylinder at the same position in the length direction of the first flow path;
The intermediate cylinder and the thermocouple between the two cylinders are
Rotation that can rotate around the central axis of the flow path while keeping the density
Replacing the rotating member of the first flow path with the rotating cylinder
Fixed on the inner surface of the so that it is driven by the flow of the warm drainage
Driven blade, and the blade of the second flow path is
Of thermocouples as water feed vanes fixed to the outer surface of a tree
Thermal wastewater power generation method. 4. An inner cylinder body having a first flow passage therein.
An intermediate cylinder provided concentrically outside the side cylinder via a gap,
It is arranged in the gap and electrically connected to the outer peripheral surface of the inner cylinder.
The one end that insulates and contacts the inner cylinder and the inner peripheral surface of the intermediate cylinder
The other end that is electrically insulated and in contact with the output of the generated electromotive force
Having a second flow path outside the intermediate cylindrical body
Of a thermocouple using a concentric outer cylinder
In the electric device, the inner cylinder and the outer cylinder may be coaxial.
Combined to form an extension of the first and second flow paths
An inner cylinder and an outer cylinder;
Gear box held by a support arm fixed to the inner cylinder;
Horizontal axis with blades protruding in the axial direction of the inner cylinder from the front; front
From the gear box, penetrate the inner cylinder vertically vertically in a watertight manner, and
A vertical axis driven in response to the rotation of the horizontal axis in the car case;
And attaching the vertical axis to an inner portion of an extension of the second flow path.
Fluid flows through an extension of the first flow path.
When the horizontal axis with the wings is rotated,
Inner blade of the extension of the second flow path by vertical axis rotation corresponding to
The fluid in the extension of the second flow path by the rotation of
A hot-water drainage power generator using a thermocouple driven in the axial direction of a rectangular cylinder . 5. The power generator according to claim 4, wherein the suction port and the discharge port formed in the outer cylinder with a gap in the axial direction of the inner cylinder, and an extension of the second flow path. An annular partition wall is provided between the inner cylindrical body and the outer cylindrical body that is divided between the suction port and the discharge port, and the gear box is positioned inside the inner cylindrical body on one side of the annular partition wall. Thermal wastewater power generator using thermocouples held in 6. An inner cylinder body having a first flow passage therein.
An intermediate cylinder provided concentrically outside the side cylinder via a gap,
It is arranged in the gap and electrically connected to the outer peripheral surface of the inner cylinder.
The one end that insulates and contacts the inner cylinder and the inner peripheral surface of the intermediate cylinder
The other end that is electrically insulated and in contact with the output of the generated electromotive force
Having a second flow path outside the intermediate cylindrical body
Of a thermocouple using a concentric outer cylinder
An inner cylinder and an outer cylinder that are coaxially coupled to the inner cylinder and the outer cylinder to form extensions of the first flow path and the second flow path; A rotatable cylinder that is rotatable by supporting a part of the inner cylinder with a circumferential water-tight bearing formed at an axial interval; a blade fixed inside the rotatable cylinder; and the rotation a water feed blade formed on an outer peripheral surface of the cylindrical body, rotating the bladed rotary cylinder body when the fluid flow in the extension of the first flow path, the water feed vanes on the rotary tubular member outer peripheral surface A hot-water drainage power generation device using a thermocouple, wherein a fluid in an extension of the second flow path is driven in the axial direction by rotation. 7. The power generating apparatus according to claim 6, wherein the suction port and the discharge port formed in the outer cylinder with a gap in the axial direction of the inner cylinder, and an extension of the second flow path. A thermocouple formed by providing an annular partition wall between the inner cylindrical body and the outer cylindrical body that is divided at an intermediate portion between the suction port and the discharge port, and forming the rotary cylindrical body on at least one side of the annular partition wall; Exhaust use
Water power generator. The power generation system of claim 8 according to claim 6 or 7, the water feed blade thermocouple use comprising a spiral blade temperature
Drainage power generator.