Geothermal power generation system

Abstract

The invention mainly discloses a geothermal power generation system, which comprises a heat collection cover, which comprises a cover body and a cover opening, and is characterized in that the cover body sequentially comprises a heat conduction layer, a thermoelectric conversion layer and a heat dissipation layer from inside to outside, and the cover opening can face a geothermal well; the temperature measuring device can measure the heat collecting temperature of the heat conducting layer; a lifting device; the control circuit is used for controlling the distance between the heat collecting cover and the geothermal well through the lifting device according to the heat collecting temperature, if the heat collecting temperature is higher than a set temperature interval, the heat collecting cover is controlled to be far away from the geothermal well, and if the heat collecting temperature is lower than a set temperature interval, the heat collecting cover is controlled to be close to the geothermal well. And if the heat collection temperature is within a set temperature interval, the heat collection cover is controlled not to act.

Description

Geothermal power generation system Technical Field

[0001] The present invention relates to the technical field of a power generation system, and in particular to the technical field of a geothermal power generation system. Background Art

[0002] Geothermal power generation currently utilizes underground heat to heat groundwater, converting it into steam, which then drives a generator to generate electricity. Hot spring power generation is also a form of geothermal power generation. Typically, the outlet temperature of a hot spring must be above 85°C to be effective for generating electricity. The heat contained in the hot spring vaporizes the refrigerant, which in turn drives the generator. Hot spring heat exchange utilizes two parallel pipes, one for the hot spring water and the other for the refrigerant. The hot spring water transfers heat energy to the refrigerant pipe through heat conduction, causing the refrigerant to evaporate and drive the generator.

[0003] Summary of the Invention

[0004] The main purpose of the present invention is to provide a geothermal power generation system that does not require a refrigerant. In one embodiment, the system includes:

[0005] A heat collecting cover comprises a cover body and a cover opening, wherein the cover body comprises a heat conducting layer, a thermoelectric conversion layer, and a heat dissipation layer in order from the inside to the outside, wherein the cover opening can face a geothermal well;

[0006] a temperature measuring device capable of measuring a heat collecting temperature of the heat conducting layer;

[0007] a lifting device;

[0008] A control circuit controls a distance between the heat collecting cover and the geothermal well via the lifting device according to the heat collecting temperature, wherein if the heat collecting temperature is higher than a set temperature range, the heat collecting cover is controlled to move away from the geothermal well; wherein if the heat collecting temperature is lower than the set temperature range, the heat collecting cover is controlled to move closer to the geothermal well; wherein if the heat collecting temperature is between the set temperature range, the heat collecting cover is controlled not to move.

[0009] The main purpose of the present invention is to provide a geothermal power generation system that does not require a refrigerant. In one embodiment, the system includes:

[0010] A heat collecting cover comprises a cover body and a cover opening, wherein the cover body comprises a heat conducting layer, a thermoelectric conversion layer, and a heat dissipation layer in order from the inside to the outside, wherein the cover opening can face a geothermal well;

[0011] a temperature measuring device capable of measuring a heat collecting temperature of the heat conducting layer;

[0012] an exhaust valve, including an exhaust port, which may be disposed in the geothermal well;

[0013] A control circuit controls an exhaust volume of the geothermal well through the exhaust valve according to the heat collection temperature, wherein if the heat collection temperature is higher than a set temperature range, the exhaust valve is controlled to shrink the exhaust port, wherein if the heat collection temperature is lower than the set temperature range, the exhaust valve is controlled to expand the exhaust port, wherein if the heat collection temperature is between the set temperature range, the exhaust valve is controlled not to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a cross-sectional view of a heat collecting cover according to an embodiment of the present invention;

[0015] FIG2 is a schematic diagram of a geothermal power generation system according to an embodiment of the present invention;

[0016] FIG3 is a schematic diagram of a geothermal power generation system according to another embodiment of the present invention.

[0017] Legend:

[0018] <The present invention>

[0019] 1 heat shield

[0020] 2 geothermal wells

[0021] 3 lifting device

[0022] 4 exhaust valves

[0023] 5 exhaust ports

[0024] 11. Mask body

[0025] 12 hood openings

[0026] 111 thermal conductive layer

[0027] 112 Thermoelectric conversion layer

[0028] 113 heat dissipation layer DETAILED DESCRIPTION

[0029] In one embodiment, referring to FIG1 , a cross-sectional view of a heat collecting cover 1 is shown, comprising a cover body 11 and a cover opening 12. The cover body 11 comprises, from the inside to the outside, a heat conducting layer 111, a thermoelectric conversion layer 112, and a heat dissipation layer 113. In one embodiment, the heat conducting layer 111 may be a copper layer, an aluminum layer, or a zinc layer, the thermoelectric conversion layer 112 may be formed by laying out a plurality of thermoelectric chips to convert thermal energy into electrical energy, and the heat dissipation layer 113 may be formed by laying out a plurality of heat dissipation fins. The cover opening 12 may face a heat source, such as a geothermal well, and collect hot air emitted from the geothermal well through the cover opening 12. The heat conducting layer 111 conducts the thermal energy of the hot air to the thermoelectric conversion layer 112, and the thermoelectric conversion layer 112 then converts the thermal energy into electrical energy. The heat dissipation layer 113 can help the thermoelectric conversion layer 112 to accelerate heat dissipation.

[0030] In one embodiment, referring to Figure 2 , a geothermal power generation system includes a heat collection cover 1, a geothermal well 2, a lifting device 3, a temperature measuring device, a control circuit, and an energy storage device. The heat collection cover 1, with its opening 12 facing the geothermal well 2, collects the hot gas exhausted from the well 2, generates electricity from the hot gas, and then transmits the electricity to the energy storage device for storage.

[0031] In one embodiment, the temperature measuring device may be a non-contact temperature measuring device, such as an infrared thermometer, or a contact temperature measuring device, such as a temperature sensing chip, which can measure the heat collection temperature of the heat conductive layer 111 when the heat collection cover 1 collects heat.

[0032] In one embodiment, the control circuit can control the distance between the heat collecting cover 1 and the geothermal well 2 via a motorized lifting device 3. For example, a pre-set temperature range can be used. When the heat collecting temperature is above the set temperature range, the lifting device 3 moves the heat collecting cover 1 away from the geothermal well 2. When the heat collecting temperature is below the set temperature range, the lifting device 3 moves the heat collecting cover 1 closer to the geothermal well 2. When the heat collecting temperature is within the set temperature range, the lifting device 3 stops the heat collecting cover 1 from moving.

[0033] In one embodiment, the power storage device may be a rechargeable battery or a supercapacitor.

[0034] In one embodiment, referring to Figure 3, a geothermal power generation system includes a heat collection cover 1, a geothermal well 2, an exhaust valve 4, a temperature measurement device, a control circuit, and an energy storage device. The heat collection cover 1, with its opening 12 facing the geothermal well 2, collects heat emitted from the well 2, which is then used to generate electricity, which is then transferred to the energy storage device for storage. The exhaust valve 4 is located within the geothermal well 2. It has an exhaust port 5, the size of which determines the amount of exhaust gas from the geothermal well 2.

[0035] In one embodiment, the control circuit can control the amount of exhaust from geothermal well 2 via an electrically operated exhaust valve 4 installed in geothermal well 2. For example, a predetermined temperature range can be set. When the collector temperature is above the predetermined range, exhaust valve 4 contracts exhaust port 5. When the collector temperature is below the predetermined range, exhaust valve 4 expands exhaust port 5. When the collector temperature is within the predetermined range, exhaust valve 4 deactivates exhaust port 5.

Claims

1. A geothermal power generation system comprising: A heat collecting cover comprises a cover body and a cover opening, wherein the cover body comprises a heat conducting layer, a thermoelectric conversion layer, and a heat dissipation layer in order from the inside to the outside, wherein the cover opening can face a geothermal well; a temperature measuring device capable of measuring a heat collecting temperature of the heat conducting layer; a lifting device; A control circuit controls a distance between the heat collecting cover and the geothermal well via the lifting device according to the heat collecting temperature, wherein if the heat collecting temperature is higher than a set temperature range, the heat collecting cover is controlled to move away from the geothermal well; wherein if the heat collecting temperature is lower than the set temperature range, the heat collecting cover is controlled to move closer to the geothermal well; wherein if the heat collecting temperature is between the set temperature range, the heat collecting cover is controlled not to move. 2 . The geothermal power generation system as claimed in claim 1 , wherein the heat conductive layer comprises a copper layer. 3 . The geothermal power generation system as claimed in claim 1 , wherein the heat conductive layer comprises an aluminum layer.

4. The geothermal power generation system as claimed in claim 1, wherein the heat conductive layer comprises a zinc layer. The geothermal power generation system as claimed in claim 1 , wherein the thermoelectric conversion layer comprises a plurality of thermoelectric chips. The geothermal power generation system as claimed in claim 1 , wherein the heat dissipation layer comprises a plurality of heat dissipation fins.

7. The geothermal power generation system as claimed in claim 1, wherein the temperature measuring device comprises an infrared thermometer.

8. The geothermal power generation system as claimed in claim 1, wherein the temperature measuring device comprises a temperature sensing chip.

9. A geothermal power generation system comprising: A heat collecting cover comprises a cover body and a cover opening, wherein the cover body comprises a heat conducting layer, a thermoelectric conversion layer, and a heat dissipation layer in order from the inside to the outside, wherein the cover opening can face a geothermal well; a temperature measuring device capable of measuring a heat collecting temperature of the heat conducting layer; an exhaust valve, including an exhaust port, which may be disposed in the geothermal well; A control circuit controls an exhaust volume of the geothermal well through the exhaust valve according to the heat collection temperature, wherein if the heat collection temperature is higher than a set temperature range, the exhaust valve is controlled to shrink the exhaust port, wherein if the heat collection temperature is lower than the set temperature range, the exhaust valve is controlled to expand the exhaust port, wherein if the heat collection temperature is between the set temperature range, the exhaust valve is controlled not to operate. 10 . The geothermal power generation system as claimed in claim 9 , wherein the heat conductive layer comprises a copper layer. 11 . The geothermal power generation system as claimed in claim 9 , wherein the thermoelectric conversion layer comprises a plurality of thermoelectric chips. 12 . The geothermal power generation system as claimed in claim 9 , wherein the heat dissipation layer comprises a plurality of heat dissipation fins.

13. The geothermal power generation system as claimed in claim 9, wherein the temperature measuring device comprises an infrared thermometer.

14. The geothermal power generation system as claimed in claim 9, wherein the temperature measuring device comprises a temperature sensing chip.

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