CN106100452A - A kind of thermal energy step utilizes the temperature difference electricity generation device of type - Google Patents
A kind of thermal energy step utilizes the temperature difference electricity generation device of type Download PDFInfo
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- CN106100452A CN106100452A CN201610674899.4A CN201610674899A CN106100452A CN 106100452 A CN106100452 A CN 106100452A CN 201610674899 A CN201610674899 A CN 201610674899A CN 106100452 A CN106100452 A CN 106100452A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
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Abstract
The invention discloses a kind of thermal energy step and utilize the temperature difference electricity generation device of type, including combustor, burner and flue, outer wall at combustor is provided with high temperature temperature-difference power generation module, flue outer wall is provided with middle temperature temperature-difference power generation module, the outside of high temperature temperature-difference power generation module is provided with cooling jacket, the outlet of cooling jacket connects with cooling water reheater, and cooling water reheater outlet is connected by the hot junction of cooling water pipe with low temperature temperature-difference power generation module.The present invention has the advantage that the present invention is by the three kinds of different module arrangement of high, medium and low temperature high-temperature region, middle warm area and low-temperature space in same system compared to existing technology, form the cascade utilization for thermal source, so that the capacity usage ratio of whole thermo-electric generation system and efficiency are highly improved.
Description
Technical field
The present invention relates to heat energy power-generating technical field, the efficient temperature-difference generating dress of a kind of Multi-class propagation
Put.
Background technology
Thermoelectric generation refer to metal or quasiconductor be heated at two ends inequality time, carrier therein migrates,
Thus electric potential difference is formed at its two ends.There is the thermoelectric material of thermo-electric generation performance, clamped by the cold end of module and module hot junction,
Thus constitute temperature-difference power generation module.When module hot-side temperature is higher than the cold end of module, temperature-difference power generation module i.e. produces electric energy, its
The temperature difference at the size of electric energy often two ends cold and hot to module is directly proportional.
Thermoelectric generation is usually used in the temperature difference heat energy utilization in various environment, but the thermo-electric conversion of temperature-difference power generation module is imitated
Rate is relatively low, and different types of temperature-difference power generation module can only play its optimal power generation performance, example a narrower temperature range
As higher in high temperature temperature-difference power generation module work efficiency in 700-1000 DEG C of interval, middle temperature temperature-difference power generation module is at 350-500 DEG C
In interval, power generation performance is higher, and the power generation performance that low temperature temperature-difference power generation module is below 100 DEG C is higher.Therefore a certain kind is used
The generating efficiency of the single-stage thermo-electric generation system that temperature-difference power generation module is constituted is relatively low, thus constrains thermoelectric generation at Gao Pin
The development directly utilizing (heat energy utilization produced by such as fuel combustion) field in potential energy source.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of thermal energy step utilizes the thermo-electric generation of type
Device.
The present invention is achieved by the following technical solutions: a kind of thermal energy step utilizes the temperature difference electricity generation device of type, including
Combustor, burner and flue, burner is arranged in combustor, flue and combustion chamber, it is characterised in that: at combustor
Outer wall be provided with high temperature temperature-difference power generation module, the hot junction of high temperature temperature-difference power generation module is arranged on outer wall of combustion chamber side, high temperature
The cold end of temperature-difference power generation module is arranged on cooling jacket side, and flue outer wall is provided with middle temperature temperature-difference power generation module, the middle temperature temperature difference
The hot junction of electricity generation module is arranged on flue outer wall side, and the cold end of middle temperature temperature-difference power generation module is arranged on air side, at high temperature
The outside of temperature-difference power generation module is provided with cooling jacket, and the outlet of cooling jacket is by cooling water pipe and low temperature temperature-difference power generation module
Hot junction connection, the cold end of low-temperature electricity-generating module is arranged on air side.
As further improvement of these options, high temperature temperature-difference power generation module selects PbTe type or PbSnTe type quasiconductor
Material makes；Middle temperature temperature-difference power generation module selects PbTe type semi-conductor thermoelectric material to make；Low temperature temperature-difference power generation module selects
Use Bi2Te3Type semi-conducting material makes.
As further improvement of these options, the cooling water pipe between cooling jacket and low temperature temperature-difference power generation module
Being additionally provided with cooling water reheater on road, cooling water reheater is lifted in flue.
As further improvement of these options, the cold end of middle temperature temperature-difference power generation module is provided with radiating fin, low temperature
The cold end of temperature-difference power generation module is also equipped with radiating fin.
The present invention has the advantage that three kinds of different module arrangement of high, medium and low temperature are existed by the present invention compared to existing technology
High-temperature region in same system, middle warm area and low-temperature space, form the cascade utilization for thermal source, so that whole temperature
Capacity usage ratio and the efficiency of difference electricity generation system are highly improved.For the power generation characteristics of temperature-difference power generation module self, gram
Take the shortcoming that existing thermo-electric generation system energy utilization efficiency is the highest, it is provided that a kind of novel cascaded utilization of energy type thermo-electric generation
Device, it is intended to by high, medium and low temperature temperature-difference power generation module being reasonably arranged in a high-temperature flue gas produced with burning as heat
In the different temperatures interval of the system in source, effectively high temperature heat source can be produced cascade utilization effect, promote thermo-electric generation system
The generating efficiency of system.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following enforcement
Example.
A kind of thermal energy step utilizes the temperature difference electricity generation device of type, and including combustor 2, burner 1 and flue 3, burner 1 sets
Putting in combustor 2, flue 3 connects with combustor 2, and the outer wall at combustor 2 is provided with high temperature temperature-difference power generation module 6, high temperature
The hot junction of temperature-difference power generation module 6 is arranged on combustor 2 outer wall side, and the cold end of high temperature temperature-difference power generation module 6 is arranged on cooling water
Overlapping 5 sides, flue 3 outer wall is provided with middle temperature temperature-difference power generation module 7, and the hot junction of middle temperature temperature-difference power generation module 7 is arranged on outside flue 3
Wall side, the cold end of middle temperature temperature-difference power generation module 7 is arranged on air side, is provided with in the outside of high temperature temperature-difference power generation module 6
Cooling jacket 5, the outlet of cooling jacket 5 is connected by the hot junction of cooling water pipe 9 with low temperature temperature-difference power generation module 8, low-temperature electricity-generating
The cold end of module is arranged on air side.
Thermoelectric generation is fitted as a kind of all solid state thermoelectric conversion mode, its simple in construction, and movement-less part, thermal source
Strong by property, therefore can generate electricity in conjunction with the thermal source etc. that useless waste heat, solar energy or combustion of natural gas produce.While it is true, system
The maximum bottleneck that about thermo-electric generation system develops on a large scale with application is that its generating efficiency is the most relatively low.And existing with
In the thermo-electric generation system that high-temperature flue gas is thermal source that burning produces, owing to system only employing single-stage high temperature thermo-electric generation mould
Block 6, therefore only with the high-temperature flue gas section of system, and for the heat in the flue gas of middle low-temperature zone and heated cooling water
Can then utilize not, cause the waste of energy and the low of generating efficiency.
Owing to the temperature in combustor 2 is the highest, in order to enable as much as possible being used for of heat to generate electricity, combustor
The outer wall of 2 does not do isothermal holding, enables the hot junction of high-temperature power generation module to reach the highest temperature, sends out to increase the high temperature temperature difference
The temperature difference at the electricity cold and hot two ends of module 6, the cold junction temperature that makes that the scheme of use cooling jacket 5 can be the fastest reduces, thus has
Effect ensures that the temperature difference makes electricity generation module normally work.Flue gas after burning also has the highest temperature, but relative to combustor 2
Temperature has reduced much, in order to effectively utilize these energy to generate electricity, the outer wall at flue 3 arranges the middle temperature temperature difference and sends out
Electricity module 7 can effectively utilize the heat energy that these grades are relatively low, after the cooling to high temperature temperature-difference power generation module 6, cools down water
In energy can be utilized by low temperature temperature-difference power generation module 8.Owing to the temperature-difference power generation module of each type is in different temperatures district
Conversion efficiency of thermoelectric in territory is different, and by energy cascade burning produced, and the energy for difference taste uses relatively
The temperature-difference power generation module answered, to change into electric energy, solves thermo-electric generation and cannot efficiently utilize the low problem of heat energy efficiency.By
In the present invention in running, on the one hand, high, medium and low temperature temperature-difference power generation module 8 can be operated in respective optimum temperature district
Between, improve the generating efficiency of module；On the other hand, the high-temperature flue gas of system, middle temperature flue gas and cooling water can obtain
Utilizing, define the cascade utilization for heat energy with this, therefore system whole efficiency is improved.
High temperature temperature-difference power generation module 6 selects PbTe type or PbSnTe type semi-conducting material to make；Middle temperature thermo-electric generation mould
Block 7 selects PbTe type semi-conductor thermoelectric material to make；Low temperature temperature-difference power generation module 8 selects Bi2Te3Type semi-conducting material system
Make.According to correlational study, it has been found that have a variety of materials to be suitable for doing thermoelectric material, according to the operational temperature of different materials
Difference, it is possible to be divided into high-temperature thermoelectric material, warm thermoelectric material and low-temperature thermoelectric material.There are some researches show and utilized Bi2Te3
The low-temperature difference generating system being fabricated to, under the hot water heating that thermal source is 80 DEG C, has the most static and dynamic property.
According to correlational study, the high temperature temperature difference being made up of P-type semiconductor material PbSnTe and N-type semiconductor material PbTe/PbSnTe
When electricity generation module 6 is operated in high-temperature region (640～730 DEG C), there is higher electric energy output.
Cooling water reheater it is additionally provided with on cooling water pipe 9 road between cooling jacket 5 and low temperature temperature-difference power generation module 8
4, cooling water reheater 4 is lifted in flue 3.Due to the temperature of high-temperature flue gas that is delivered directly in flue 3 from combustor 2 very
Height, tends to reach 500～600 DEG C, and the optimum working temperature having exceeded middle temperature temperature-difference power generation module 7 is interval, by cigarette
Road 3 and combustor 2 connecting portion arrange cooling water reheater 4 can effectively reduce the temperature of flue gas, simultaneously cooling water reheater 4
Can be by the energy recovery of this part, for the thermal source of low temperature temperature-difference power generation module 8, it is ensured that the normal work of whole TRT
Make, make the thermoelectric conversion rate of device be improved simultaneously.
The cold end of middle temperature temperature-difference power generation module 7 is provided with radiating fin, and the cold end of low temperature temperature-difference power generation module 8 is also equipped with
Radiating fin.Fin can help cold end to keep the steady statue of low temperature, makes middle temperature temperature-difference power generation module 7 and low temperature thermo-electric generation
The temperature difference of module 8 is constant, enables normally to work.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Any amendment, equivalent and the improvement etc. made within principle, should be included within the scope of the present invention.
Claims (4)
1. thermal energy step utilizes a temperature difference electricity generation device for type, and including combustor, burner and flue, described burner is arranged
In combustor, described flue and combustion chamber, it is characterised in that: the outer wall at combustor is provided with high temperature thermo-electric generation mould
Block, the hot junction of described high temperature temperature-difference power generation module is arranged on outer wall of combustion chamber side, the cold end of described high temperature temperature-difference power generation module
Being arranged on cooling jacket side, described flue outer wall is provided with middle temperature temperature-difference power generation module, described middle temperature temperature-difference power generation module
Hot junction is arranged on flue outer wall side, and the cold end of described middle temperature temperature-difference power generation module is arranged on air side, in described high temperature temperature
The outside of difference electricity generation module is provided with cooling jacket, and the outlet of described cooling jacket is by cooling water pipe and low temperature thermo-electric generation mould
The hot junction connection of block, the cold end of low-temperature electricity-generating module is arranged on air side.
A kind of thermal energy step the most as claimed in claim 1 utilizes the temperature difference electricity generation device of type, it is characterised in that: the described high temperature temperature difference
Electricity generation module selects PbTe type or PbSnTe type semi-conducting material manufacturing；Described middle temperature temperature-difference power generation module selects PbTe type partly to lead
Body heat electric material makes；Described low temperature temperature-difference power generation module selects Bi2Te3Type semi-conducting material manufacturing.
A kind of thermal energy step the most as claimed in claim 2 utilizes the temperature difference electricity generation device of type, it is characterised in that: cooling jacket with
Being additionally provided with cooling water reheater on cooling water pipeline between low temperature temperature-difference power generation module, described cooling water reheater is lifted on
In described flue.
A kind of thermal energy step the most as claimed in claim 1 utilizes the temperature difference electricity generation device of type, it is characterised in that: the described middle temperature temperature difference
The cold end of electricity generation module is provided with radiating fin, and the cold end of described low temperature temperature-difference power generation module is also equipped with radiating fin.
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| CN201610674899.4A CN106100452A (en) | 2016-08-16 | 2016-08-16 | A kind of thermal energy step utilizes the temperature difference electricity generation device of type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533263A (en) * | 2016-12-29 | 2017-03-22 | 哈尔滨工业大学 | Multi-stage semiconductor thermoelectric power generation and cooling integrated system for hypersonic flight vehicle |
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| JP2007214523A (en) * | 2006-02-13 | 2007-08-23 | Sadao Takagi | Tpv combined power generating apparatus |
| CN101425768A (en) * | 2008-11-21 | 2009-05-06 | 华南师范大学 | Industrial cooling and waste heat recovery apparatus |
| CN103166523A (en) * | 2011-12-14 | 2013-06-19 | 中国钢铁股份有限公司 | Method and device for recovering waste heat of heating furnace wall and generating electricity |
| CN103475268A (en) * | 2013-09-03 | 2013-12-25 | 华中科技大学 | Micro-burning electric generating device |
| CN205945554U (en) * | 2016-08-16 | 2017-02-08 | 中国大唐集团科学技术研究院有限公司华东分公司 | Temperature difference power generation devices of heat energy cascade utilization type |
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- 2016-08-16 CN CN201610674899.4A patent/CN106100452A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007214523A (en) * | 2006-02-13 | 2007-08-23 | Sadao Takagi | Tpv combined power generating apparatus |
| CN2879528Y (en) * | 2006-03-30 | 2007-03-14 | 刘春生 | Micro-burning electricity generator |
| CN101425768A (en) * | 2008-11-21 | 2009-05-06 | 华南师范大学 | Industrial cooling and waste heat recovery apparatus |
| CN103166523A (en) * | 2011-12-14 | 2013-06-19 | 中国钢铁股份有限公司 | Method and device for recovering waste heat of heating furnace wall and generating electricity |
| CN103475268A (en) * | 2013-09-03 | 2013-12-25 | 华中科技大学 | Micro-burning electric generating device |
| CN205945554U (en) * | 2016-08-16 | 2017-02-08 | 中国大唐集团科学技术研究院有限公司华东分公司 | Temperature difference power generation devices of heat energy cascade utilization type |
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| CN106533263A (en) * | 2016-12-29 | 2017-03-22 | 哈尔滨工业大学 | Multi-stage semiconductor thermoelectric power generation and cooling integrated system for hypersonic flight vehicle |
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Application publication date: 20161109 |