CN-115498922-B - Thermoelectric generator utilizing near-constant temperature water and air photo-heat and effective operation method

CN115498922BCN 115498922 BCN115498922 BCN 115498922BCN-115498922-B

Abstract

The invention relates to a thermoelectric generator utilizing nearly constant temperature water and air photo-thermal and an effective operation method, wherein the thermoelectric generator comprises a micro-channel flat plate radiator, a high-heat-conductivity graphene film, a plurality of upper thermoelectric modules, a high-heat-conductivity graphene film and an upper rib radiator are sequentially arranged on the upper side of the micro-channel flat plate radiator, a high-heat-conductivity graphene film, a plurality of lower thermoelectric modules, a high-heat-conductivity graphene film, a lower rib radiator and a bracket are sequentially arranged on the lower side of the micro-channel flat plate radiator, a transparent glass cover is arranged on the upper rib radiator, inlet and outlet connecting water pipes are connected to the two ends of the micro-channel flat plate radiator, and the problems that the traditional air photo-thermal thermoelectric generator usually uses solar irradiation as a heat source, air as a cold source and cannot generate electricity continuously all day are solved.

Inventors

QING SHAOWEI
XIE GENGXIN
HU JIAN
REN SHANGKUN

Assignees

重庆大学
西南大学

Dates

Publication Date: 20260505
Application Date: 20221024

Claims (8)

1. The efficient operation method of the thermoelectric generator utilizing near-constant temperature water and air photo-heat is characterized in that the thermoelectric generator comprises a micro-channel flat plate radiator, wherein a high-heat-conductivity graphene film, a plurality of upper thermoelectric modules, a high-heat-conductivity graphene film and an upper rib radiator are sequentially arranged on the upper side of the micro-channel flat plate radiator; the operation method comprises the following steps: S1, sequentially placing a high-heat-conductivity graphene film, an upper thermoelectric module, a high-heat-conductivity graphene film and an upper rib radiator on the upper side of a micro-channel flat radiator, wherein four corners of an upper bottom flat plate of the micro-channel flat radiator and the four corners of the upper rib radiator are fixedly connected through upper fastening bolts, and a transparent glass cover is placed on the upper rib radiator; S2, sequentially arranging the high-heat-conductivity graphene film, the lower thermoelectric module, the high-heat-conductivity graphene film, the lower rib radiator and the bracket on the lower side of the micro-channel flat radiator, wherein the four corners of the lower flat plate of the micro-channel flat radiator and the four corners of the lower rib radiator are fixedly connected through lower fastening bolts; s3, placing the microchannel flat radiator between the adjacent high-heat-conductivity graphene films, and fixedly connecting the ends of the two ends with an inlet and an outlet connecting water pipe in a welding mode, wherein the inlet and the outlet connecting water pipe is used for connecting karst cave/underground near-constant temperature water; s4, under the working condition in summer, the heat source of the upper thermoelectric module is air photo-thermal, the heat source of the lower thermoelectric module is hot air, and karst cave/underground nearly constant temperature water is used as a cold source; Under the working condition in winter, the cold source of the lower thermoelectric module is cold air, the heat source is karst cave/underground nearly constant temperature water, when the illumination is weak, the cold source of the upper thermoelectric module is air photo-thermal, the heat source is karst cave/underground nearly constant temperature water, when the illumination is strong, the cold source of the upper thermoelectric module is karst cave/underground nearly constant temperature water, and the heat source is air photo-thermal; In the step S4, when the surface temperature of the upper rib radiator is higher than the air temperature, namely the illumination is stronger, in order to avoid the convection heat dissipation between the air and the upper rib radiator, a transparent glass cover is covered on the upper rib radiator; when the surface temperature of the upper rib radiator is lower than the air temperature, namely the illumination is weaker, the transparent glass cover on the upper rib radiator should be removed in order to enhance the convection heat radiation between the air and the upper rib radiator.
2. The method of operation of claim 1, wherein the microchannel plate radiator is flat and has upper bottom plates fixedly connected to four corners of the upper fin radiator by upper fastening bolts, and lower bottom plates fixedly connected to four corners of the lower fin radiator by lower fastening bolts.
3. The method of operation of claim 2, wherein the microchannel plate heat sink is formed with a plurality of through microchannels along a length.
4. The method of operation of claim 2, wherein the inlet and outlet connecting water pipe has rectangular holes on the side facing the microchannel plate radiator and is fixedly connected with the two ends of the microchannel plate radiator by welding.
5. The efficient operation method as claimed in claim 2, wherein the upper and lower bottom plates of the microchannel plate radiator extend to both sides by 3-5 cm.
6. The efficient operation method as recited in claim 2, wherein the upper end fin radiator and the lower end fin radiator are in a comb-tooth shape.
7. The method of efficient operation according to claim 1 wherein in step S1 the upper thermoelectric modules are equally spaced apart between the high thermal conductivity graphene film and the high thermal conductivity graphene film, and the upper fin heat sink is positioned tooth-wise upward on the high thermal conductivity graphene film.
8. The method of claim 1, wherein in step S2, the high thermal conductivity graphene film is tiled on the lower fin radiator, the lower thermoelectric modules are tiled at equal intervals between the high thermal conductivity graphene film and the high thermal conductivity graphene film, the lower fin radiator is arranged on the support in a tooth shape downward manner, and the supports are respectively arranged at two ends of the lower fin radiator.

Description

Thermoelectric generator utilizing near-constant temperature water and air photo-heat and effective operation method Technical Field The invention belongs to the technical field of thermoelectric generation, relates to a thermoelectric generator utilizing near-constant temperature water and air photo-thermal and an effective operation method, and particularly relates to a thermoelectric generator utilizing karst cave/underground near-constant temperature water and air photo-thermal and an effective operation method. Background The karst cave/underground has rich near-constant temperature (15 ℃) water resources, and is usually pumped out by a water pump to supply the production and living water. The air contains inexhaustible photo-thermal resources, for example, the air temperature is generally 25-40 ℃ under summer conditions, the surface light radiation is very strong and can reach hundreds to one kilowatt per square meter, and the air temperature is generally lower than 10 ℃ under winter conditions, and the surface light radiation reaches tens to hundreds of watts per square meter. In a comprehensive view, a certain temperature difference exists between the air photo-thermal system and the karst cave/underground nearly constant-temperature water, and the device has considerable temperature difference energy utilization value. The thermoelectric generation is an all-solid-state power generation technology for directly converting heat energy into electric energy, and the electric energy can be continuously output as long as the thermoelectric generation module is arranged between the heat source and the cold source. The traditional air photo-thermal thermoelectric generator usually uses solar irradiation as a heat source and air as a cold source, so that the temperature difference is low and uninterrupted power generation cannot be realized all the day. Based on the above, a thermoelectric generator utilizing karst cave/underground nearly-constant temperature water and air photo-thermal is provided. The karst cave/underground nearly-constant temperature water flows through the micro-channel flat plate radiator, and thermoelectric modules and fin radiators are symmetrically arranged at the upper end and the lower end of the micro-channel flat plate radiator. The thermoelectric generator combines karst cave/underground nearly constant temperature water and air photo-thermal, particularly has larger temperature difference and higher power generation under the working condition of summer, can realize all-weather uninterrupted power generation, and the karst cave/underground nearly constant temperature water is generally pumped out by a water pump to be used as production and living water, so that the energy consumption of the water pump is hardly increased when the water pump flows through the micro-channel flat plate radiator in the middle link. Disclosure of Invention In view of the above, the invention provides a thermoelectric generator utilizing nearly constant temperature water and air photo-thermal and an effective operation method, which can realize uninterrupted recovery and power generation of air photo-thermal in order to solve the problems that the traditional air photo-thermal thermoelectric generator usually uses solar irradiation as a heat source and air as a cold source, and the temperature difference is low and uninterrupted power generation cannot be realized throughout the day. In order to achieve the above purpose, the present invention provides the following technical solutions: A thermoelectric generator utilizing nearly constant temperature water and air photo-heat comprises a micro-channel flat plate radiator, wherein a high heat conduction graphene film, a plurality of upper thermoelectric modules, a high heat conduction graphene film and an upper rib radiator are sequentially arranged on the upper side of the micro-channel flat plate radiator, a high heat conduction graphene film, a plurality of lower thermoelectric modules, a high heat conduction graphene film, a lower rib radiator and a support are sequentially arranged on the lower side of the micro-channel flat plate radiator, a transparent glass cover is arranged on the upper rib radiator, and inlet and outlet connecting water pipes are connected to the two ends of the micro-channel flat plate radiator. The basic scheme has the beneficial effects that the two sides of the micro-channel flat plate radiator are provided with the thermoelectric generators which are symmetrical up and down, the built thermoelectric generators which are symmetrical up and down can realize all-weather uninterrupted power generation, and the inlet and outlet connecting water pipes are used for connecting karst cave/underground nearly-constant-temperature water. Further, the micro-channel flat plate radiator is flat plate-shaped, the four corners of the upper bottom flat plate and the upper end rib radiator are fixedly connected through upper end fastenin