CN205490242U - High -efficient flue gas temperature difference power generation devices - Google Patents
High -efficient flue gas temperature difference power generation devices Download PDFInfo
- Publication number
- CN205490242U CN205490242U CN201620116590.9U CN201620116590U CN205490242U CN 205490242 U CN205490242 U CN 205490242U CN 201620116590 U CN201620116590 U CN 201620116590U CN 205490242 U CN205490242 U CN 205490242U
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- CN
- China
- Prior art keywords
- flue gas
- thermoelectric generator
- fluid reservoir
- collecting tank
- collector tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a high -efficient flue gas temperature difference power generation devices. It includes intake pipe, liquid storage pot, outlet duct, flue gas thermoelectric generator, collector tube, liquid trap and back flow. Hold the water of capacity in the liquid storage pot, the liquid storage pot bottom is goed deep into to the intake pipe, the mouth of pipe aquatic of liquid storage pot of submerging, and the outlet duct links to each other with thermoelectric generator's heat transfer passageway, connects the collector tube in the bottom of thermoelectric generator's heat transfer passageway, and the collector tube is connected with the liquid -collecting tank top, and liquid -collecting tank bottom opening is connected with the back flow, and the back flow is final to be connected bottom the liquid storage pot. The utility model discloses can effectively improve the heat exchange coefficient between flue gas and the heat transfer passageway, make thermoelectric generator's output all obtain improving with conversion efficiency.
Description
Technical field
This utility model relates to a kind of high effective flue gas temperature difference electricity generation device, belongs to the thermo-electric generation field combined with heat recovery.
Background technology
Day by day serious along with energy problem and environmental problem, how to improve to greatest extent on the premise of guaranteeing environmental friendliness the energy utilization ratio oneself become countries in the world question of common concern.Natural gas, as a kind of high-quality, efficient, the energy of cleaning, is widely used in the every field of national life and production, such as gas-heating, industry heating etc..The fast development of natural gas, the efficient utilization to its heat energy has become the top-priority problem of industry.Gas-heating equipment exhaust gas temperature is at about 150-250 DEG C at present, and industry heating facility exhaust gas temperature is higher, causes the waste of energy.Semiconductor thermoelectric generator utilizes the temperature difference that heat energy is converted into the energy conversion device of electric energy, it moves parts without chemical reaction and mechanical, thus there is noiseless, pollution-free, nothing abrasion and the advantage such as small volume and less weight, length in service life, utilize the heat energy in thermoelectric generator recovered flue gas to carry out generating and can put forward the quality of high-octane utilization ratio and energy.
Traditional temperature difference electricity generation device utilizes heat exchanger channels that the heat in flue gas passes to the hot junction of thermoelectric generator, but owing to the simple gaseous exchange coefficient of heat transfer is the lowest, only 10-100W/m2K, causes and there is the bigger temperature difference between the hot junction of thermoelectric generator and flue gas, and the cold warm end temperature difference of thermo-electric generation sheet is less, governs output and the conversion efficiency of thermo-electric generation sheet.
Summary of the invention
The purpose of this utility model is to provide a kind of high effective flue gas temperature difference electricity generation device.It is the improvement to common flue gas thermoelectric generator.This utility model can be effectively improved the coefficient of heat transfer between flue gas and heat exchanger channels, improve thermo-electric generation sheet hot-side temperature, the output making thermoelectric generator is improved with conversion efficiency, unit length thermoelectric generator generated energy increases, on this basis, length and the volume of thermoelectric generator can be reduced, decrease production cost.This utility model provides a kind of method of raising combustion gas flue gas thermo-electric generation performance simple and easy to do, widely used.
A kind of high effective flue gas temperature difference electricity generation device that this utility model provides includes air inlet pipe, fluid reservoir, escape pipe, flue gas thermoelectric generator, collector tube, liquid trap and return duct.Fluid reservoir is a tank body (or casing) sealed, wherein hold enough water, air inlet pipe is goed deep into bottom fluid reservoir, in the water of mouth of pipe fluid reservoir to be submerged, escape pipe is connected at fluid reservoir upper opening, escape pipe is connected with the heat exchanger channels of thermoelectric generator, bottom at the heat exchanger channels of thermoelectric generator, an aperture is all offered in the bottom that every plate thermo-electric generation sheet is corresponding, each aperture is all connected with a collector tube, collector tube is connected with liquid collecting tank top, liquid collecting tank is a tank body (or casing) sealed, liquid collecting tank bottom opening is connected with return duct, return duct is finally connected with bottom fluid reservoir.Additionally, fluid reservoir and liquid collecting tank setting height(from bottom) flue gas to be slightly less than thermoelectric generator, and bottom thermoelectric generator, should be higher than that fluid reservoir and the height of water level in liquid collecting tank, prevent water to be back in the heat exchanger channels of flue gas thermoelectric generator.
The step that the operation method of a kind of high effective flue gas temperature difference electricity generation device that this utility model provides includes: fluid reservoir is built with the pure water of a certain amount of (1/2-2/3 of fluid reservoir volume), high-temperature flue gas first passes through in air inlet pipe enters fluid reservoir and is fully contacted with water in tank, high-temperature flue gas is sufficiently mixed with pure water, the low temperature saturated flue gas that temperature is relatively low will be become, low temperature saturated flue gas enters thermoelectric generator by the escape pipe of fluid reservoir, in thermoelectric generator, low temperature saturated flue gas can occur to condense heat release in heat exchanger channels, its coefficient of heat transfer can improve a lot, finally, the hot-side temperature making thermoelectric generator is improved, generated energy increases.The water that in thermoelectric generator heat exchanger channels, condensation produces is flowed into liquid trap by bottom thermoelectric generator through collector tube, due to liquid trap and fluid reservoir return duct UNICOM, in the condensate return collected to fluid reservoir, it is achieved the continual and steady operation that system is overall.
This utility model has general applicability, the thermoelectric generator device being applicable not only under common heat exchanger channels, is also applied for the temperature difference electricity generation device of heat exchanger channels band enhanced heat exchange parts.This utility model utilizes the steam coagulation coefficient of heat transfer compared with big and that the latent heat of vaporization is huge feature, portion of energy in flue gas is shifted in steam, by improving the content of steam in flue gas, to improve the convection transfer rate of flue gas, thus it is effectively improved flue gas thermoelectric generator hot-side temperature, improve generating efficiency and the power generation density of thermoelectric generator, additionally due to the increase of saturated wet flue gas specific heat capacity, the generated energy of unit length thermoelectric generator increases, thus reach to save the materials of thermoelectric generator, save the purpose of production cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of high effective flue gas temperature difference electricity generation device.
Fig. 2 is traditional flue gas thermoelectric generator principle schematic.
Detailed description of the invention
Further illustrate content of the present utility model, feature and effect referring to the drawings.
As it is shown in figure 1, a kind of high effective flue gas temperature difference electricity generation device that this utility model provides includes air inlet pipe 1, fluid reservoir 2, escape pipe 3, flue gas thermoelectric generator 4, collector tube 5, liquid trap 6 and return duct 7.Fluid reservoir 2 is a tank body (or casing) sealed, wherein hold the water of enough (1/2-2/3 of fluid reservoir volume), air inlet pipe 1 is goed deep into bottom fluid reservoir 2, in the water of mouth of pipe fluid reservoir to be submerged 2, escape pipe 3 is connected at fluid reservoir 2 upper opening, escape pipe 3 is connected with the heat exchanger channels of flue gas thermoelectric generator 4, bottom at the heat exchanger channels of flue gas thermoelectric generator 4, an aperture is all offered in the bottom that every plate thermo-electric generation sheet is corresponding, each aperture is all connected with a collector tube 5, collector tube 5 is connected with liquid collecting tank 6 top, liquid collecting tank 6 is a tank body (or casing) sealed, liquid collecting tank 6 bottom opening is connected with return duct 7, return duct 7 is finally connected bottom fluid reservoir 2.Additionally, fluid reservoir 2 and liquid collecting tank 6 setting height(from bottom) flue gas to be slightly less than thermoelectric generator 4, and bottom thermoelectric generator 4, should be higher than that fluid reservoir 2 and the height of water level in liquid collecting tank 6, facilitate the condensation water in flue gas thermoelectric generator 4 heat exchanger channels to flow to liquid collecting tank 6 smoothly.
Commonly flue gas thermoelectric generator is as in figure 2 it is shown, include gas approach passage 21, exhanst gas outlet passage 22, flue gas heat exchange passage 27, cools down fluid inlet channel 23, cools down fluid outlet channels 24, cold fluid heat exchanger 25 and semiconductor temperature differential generating sheet 26.Common flue gas thermoelectric generator relies on flue gas to generate electricity with the temperature difference of cold flow body, detailed process is as follows: high-temperature flue gas enters flue gas heat exchange passage 27 by gas approach passage 21, in flue gas heat exchange passage 27, high-temperature flue gas transfers heat to the hot junction of thermo-electric generation sheet 26 and becomes low-temperature flue gas and discharged by exhanst gas outlet passage 22, in thermo-electric generation sheet 26, a part of heat is transformed into electric energy, remaining heat by the cold absorption of fluids in cold fluid heat exchanger 25, cold flow body can be cold air can also be cold water.But owing to the coefficient of heat transfer between high-temperature flue gas and flue gas heat exchange passage 27 is the most relatively low, cause and between the hot junction of high-temperature flue gas and thermo-electric generation sheet 26, there is bigger thermal resistance, the temperature of the hot-side temperature high-temperature flue gas to be far below of actual thermo-electric generation sheet 26, causes generated energy relatively low with generating efficiency.
High-temperature flue gas is first passed through air inlet pipe 1 and is passed through in fluid reservoir 2 by this utility model, it is made to be fully contacted with water in tank, partial heat transmission feedwater in high-temperature flue gas, make that part is water becomes steam, now the temperature of high-temperature flue gas reduces, but water vapour content will increase in flue gas, finally, unsaturated flue gas passes through becoming the relatively low saturated wet flue gas of temperature in the flue gas heat exchange passage 27 that air inlet pipe 3 enters thermoelectric generator 4.In flue gas heat exchange passage 27, the saturated wet flue gas of low temperature meets the cold condensation that steam will occur, the saturated wet flue gas coefficient of heat transfer in flue gas heat exchange passage 27 is more much bigger than former high-temperature flue gas, therefore, thermal resistance between the saturated wet flue gas of low temperature and thermo-electric generation sheet 26 hot junction will reduce, the hot-side temperature of thermo-electric generation sheet 26 is closer to the temperature of the saturated wet flue gas of low temperature, although the temperature of the most saturated wet flue gas is high not as the temperature of former high-temperature flue gas, but the raising of the coefficient of heat transfer makes the hot-side temperature of thermo-electric generation sheet 26 still higher than former method, the cold warm end temperature difference of thermo-electric generation sheet 26 increases, generated energy will increase with generating efficiency.Due to the condensation of steam in the saturated wet flue gas of low temperature in flue gas heat exchange passage 27, it would appear that condensed water in flue gas heat exchange passage 27, by collector tube 5 by condensation water collection to liquid collecting tank 6, the condensate return in last liquid collecting tank 6 to fluid reservoir 2 completes circulation.
In addition, owing to the specific heat of saturated wet flue gas is big compared with the specific heat of unsaturation wet flue gas, reduce identical temperature, saturated moist air discharges more heat, therefore the generated energy of unit are thermoelectric generator increases, and identical thermoelectric generator will reduce the temperature of flue gas further, and the overall utilization of fume afterheat improves, generated energy increases, and generating efficiency increases.
This utility model is equally applicable to heat exchanger channels and takes the thermoelectric generator of enhanced heat exchange mode, because this utility model is the state changing thermoelectric generator air inlet, for the passage of forced convective heat transfer of flue can be strengthened, equally strengthening the heat transfer effect of saturated wet flue gas, therefore this utility model has general applicability.
This utility model is applicable not only to reclaim the thermoelectric generator of combustion gas fume afterheat, it is also applied for the tail gas under any form that water capacity is bigger, the flue gas that coal as bigger in moisture content, biomass fuel produce, in its flue gas, water vapour content is bigger, it is possible with this utility model and improves forced convective heat transfer of flue coefficient, improve thermoelectric generator performance.
Although preferred embodiment of the present utility model being described above in conjunction with accompanying drawing; but this utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematically; it is not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; in the case of without departing from this utility model objective and scope of the claimed protection, it is also possible to make a lot of form, within these belong to protection domain of the present utility model.
Claims (4)
1. a high effective flue gas temperature difference electricity generation device, it is characterised in that it includes air inlet pipe, fluid reservoir, escape pipe, flue gas thermoelectric generator, collector tube, liquid trap and return duct；The air inlet pipe mouth of pipe gos deep in the water of fluid reservoir, and fluid reservoir top connects escape pipe one end, and the other end of escape pipe is connected with the heat exchanger channels of thermoelectric generator;Aperture, the thermo-electric generation sheet of aperture correspondence thermoelectric generator is set bottom heat exchanger channels；Each aperture is all connected with collector tube, and collector tube is connected with liquid collecting tank top；Return duct, return duct connection fluid reservoir is set bottom liquid collecting tank；Fluid reservoir seals with liquid collecting tank.
Device the most according to claim 1, it is characterised in that described air inlet pipe gos deep into the bottom of fluid reservoir.
Device the most according to claim 1, it is characterised in that described fluid reservoir and liquid collecting tank setting height(from bottom) flue gas to be slightly less than thermoelectric generator, should be higher than that fluid reservoir and the height of water level in liquid collecting tank bottom thermoelectric generator.
Device the most according to claim 1, it is characterised in that the volume of the water of described fluid reservoir is fluid reservoir volume 1/2-2/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620116590.9U CN205490242U (en) | 2016-02-05 | 2016-02-05 | High -efficient flue gas temperature difference power generation devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620116590.9U CN205490242U (en) | 2016-02-05 | 2016-02-05 | High -efficient flue gas temperature difference power generation devices |
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| Publication Number | Publication Date |
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| CN205490242U true CN205490242U (en) | 2016-08-17 |
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| CN201620116590.9U Expired - Fee Related CN205490242U (en) | 2016-02-05 | 2016-02-05 | High -efficient flue gas temperature difference power generation devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529958A (en) * | 2016-02-05 | 2016-04-27 | 河北工业大学 | Efficient flue gas temperature difference power generation device and method |
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2016
- 2016-02-05 CN CN201620116590.9U patent/CN205490242U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529958A (en) * | 2016-02-05 | 2016-04-27 | 河北工业大学 | Efficient flue gas temperature difference power generation device and method |
| CN105529958B (en) * | 2016-02-05 | 2017-10-13 | 河北工业大学 | A kind of method of high effective flue gas temperature difference electricity generation device operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20180205 |