CN110030574A - A kind of compact regenerative air heater of Stirling engine external combustion system - Google Patents
A kind of compact regenerative air heater of Stirling engine external combustion system Download PDFInfo
- Publication number
- CN110030574A CN110030574A CN201810025678.3A CN201810025678A CN110030574A CN 110030574 A CN110030574 A CN 110030574A CN 201810025678 A CN201810025678 A CN 201810025678A CN 110030574 A CN110030574 A CN 110030574A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- air
- preheater
- flue gas
- exchange unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/04—Arrangements of recuperators
- F23L15/045—Arrangements of recuperators using intermediate heat-transfer fluids
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a kind of Stirling engine external combustion system close-coupled Air Preheater Technologies.Preheater uses ring structure, it is made of 8 identical 45 degree annular heat exchange units, pass through welded connecting between two neighboring heat exchange unit, air enters 8 heat exchange units by preheater bottom, it curves by 90 degree into each heat exchange unit ring fin heat exchange area air layer, is discharged with after combustion product gases heat exchange by preheater top.The high-temperature flue gas generated that burns enters 8 heat exchange units by preheater ring-shaped inner part, curves through 90 degree into each heat exchange unit fin heat exchange area flue gas layer, exports and be discharged through preheater outer ring after being exchanged heat with air.Interlayer adverse current heat convection is carried out between air and flue gas.Compact regenerative air heater proposed by the present invention, using segmented plate fin structure, gas circuit connection and reasonable arrangement is ingenious, has the characteristics that modularization, easy processing, has remarkable result to Stirling engine external combustion system efficiency of combustion and system generating efficiency is improved.
Description
Technical field
The present invention relates to a kind of air preheater more particularly to a kind of Stirling engine external combustion system close-coupled air are pre-
Hot device.
Background technique
Air preheater is the important component of Stirling engine external combustion system, is the main height of Stirling engine
Temperature heat exchanger, if fuel combustion generates heat without air preheater, in engine 45% or so will be expelled directly out.
Air preheater can make full use of these waste-heat combustion airs, make the efficiency of Stirling engine external combustion system significantly
It is promoted, to improve the overall efficiency of Stirling engine.The efficiency of air preheater and the burning thermal effect of Stirling engine
Rate is directly proportional, can be increased to 85%~90% from 55% or so using the efficiency of the usual Stirling engine external combustion system of preheater, and
And burning is more abundant, discharges lower.Due to being limited by Stirling engine outer dimension, air preheater is meeting heat exchange
While high-efficient and flow resistance is small, to accomplish that size is small, light-weight as far as possible, this proposes the design of air preheater very big
Challenge.The invention proposes a kind of compact efficient heat exchanger structures, and using segmented plate fin structure, gas circuit connection and reasonable arrangement is skilful
It is wonderful, have the characteristics that modularization, easy processing, has to raising Stirling engine external combustion system efficiency of combustion and system generating efficiency
There is remarkable result.
Summary of the invention
The present invention provides a kind of compact regenerative air heaters of Stirling engine external combustion system, and the preheater is using segmentation
Formula plate fin structure, gas circuit connection and reasonable arrangement is ingenious, has the characteristics that compact-sized, modularization, easy processing.
The technical scheme is that
A kind of Stirling engine external combustion system compact efficient air preheater, including 8 identical 45 degree of annulars heat exchange are single
Member, heat exchange unit are combined by Multi-layer exchanging heat fin and are welded, and each heat exchange unit is equipped with Cryogenic air import and high temperature is empty
Gas outlet and high-temperature flue gas import and low-temperature flue gas outlet.
By being welded to connect between two neighboring heat exchange unit, annular air preheater is formed, convenient for being located at central area
Combustion chamber burning after flue gas discharged by air preheater.
Air enters each heat exchange unit by the air intlet of preheater bottom 8, curves by 90 degree single into heat exchange
First annular heat exchange fin heat exchange area air layer is discharged with after combustion product gases heat exchange by 8 gas outlets above preheater.
High-temperature flue gas enters each heat exchange unit by the gas inlet on 8 heat exchange units of preheater ring-shaped inner part, through 90
Degree is curved into annular heat exchange fin heat exchange area flue gas layer, through 8 heat exchange units of preheater outer ring after being exchanged heat with air
On exhanst gas outlet discharge.
Air layer and flue gas layer are located in adjacent heat exchange fin in heat exchange unit, and it is inverse that interlayer is carried out between air and flue gas
Flow heat convection.
Flow channel in heat exchange fin is using unipath or biasing access setting.It is more inclined using the heat exchange fin of unipath
The heat exchange fin flow resistance for setting access is small, but heat exchange efficiency is not as good as biasing access.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical solution of the present invention
It is briefly described.
Fig. 1 is air preheater structural schematic diagram of the present invention；
Fig. 2 is air preheater heat exchange unit structural schematic diagram of the present invention；
Fig. 3 is air preheater heat exchange unit heat exchange fin structural schematic diagram of the present invention.
The compact regenerative air heater of 1- in figure, 2- heat exchange unit, 3- high-temperature flue gas import, the outlet of 4- low-temperature flue gas, 5- are low
Warm air import, the outlet of 6- high temperature air, 7 (a)-straight channel heat exchange fins, 7 (b)-offset passages heat exchange fins.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 show a kind of compact regenerative air heater structural schematic diagram of Stirling engine external combustion system, including 8 identical
45 degree of annular heat exchange unit 2(Fig. 2), heat exchange unit is formed by 7 Combination Welding of Multi-layer exchanging heat fin, heat exchange fin structural schematic diagram
As shown in figure 3, each heat exchange unit is equipped with Cryogenic air import 5 and high temperature air outlet 6 and high-temperature flue gas import 3 and low
Warm exhanst gas outlet 4.By being welded to connect between two neighboring heat exchange unit 2, annular air preheater 1 is formed, center is located at
Flue gas after the combustion chamber burning in domain is discharged by air preheater.Air enters 8 by preheater bottom air import 5
Heat exchange unit is curved by 90 degree into 8 heat exchange area air layer of annular heat exchange fin, by preheater after exchanging heat with combustion product gases
6 discharge of upper air outlet.High-temperature flue gas enters each change by the gas inlet 3 on 8 heat exchange units of preheater ring-shaped inner part
Hot cell is curved through 90 degree into 8 heat exchange area flue gas layer of annular heat exchange fin, through preheater outer ring after being exchanged heat with air
Exhanst gas outlet 4 on 8 heat exchange units is discharged.Air layer and flue gas layer are located at the heat exchange fin of different layers in heat exchange unit
It is interior, and interlayer setting respectively, interlayer adverse current heat convection is carried out between air and flue gas.Heat exchange fin flowing in heat exchange unit
Channel is using unipath or using biasing access.It is small compared with the heat exchange fin flow resistance of biasing access using the heat exchange fin of unipath,
But heat exchange efficiency is not as good as biasing access.Compact regenerative air heater proposed by the present invention, using segmented plate fin structure, gas circuit cloth
Set rationally it is ingenious, have the characteristics that modularization, easy processing, to improve Stirling engine external combustion system efficiency of combustion and system hair
Electrical efficiency has remarkable result.
Claims (6)
1. a kind of Stirling engine external combustion system compact efficient air preheater, including 8 identical 45 degree of annulars heat exchange
Unit, heat exchange unit are combined by Multi-layer exchanging heat fin and are welded, and each heat exchange unit is equipped with Cryogenic air import and high temperature
Air outlet slit and high-temperature flue gas import and low-temperature flue gas outlet.
2. air preheater according to claim 1, it is characterised in that: connected between two neighboring heat exchange unit by welding
It connects, forms annular air preheater.
3. air preheater according to claim 1, it is characterised in that: air enters heat exchange by preheater bottom air inlet
Unit is curved by 90 degree into annular heat exchange fin heat exchange area air layer, by above preheater after exchanging heat with combustion product gases
Gas outlet discharge.
4. air preheater according to claim 1, it is characterised in that: high-temperature flue gas is by preheater ring-shaped inner part air inlet
Into heat exchange unit, curve through 90 degree into annular heat exchange fin heat exchange area flue gas layer, through preheating after being exchanged heat with air
The discharge of device outer ring gas outlet.
5. air preheater according to claim 1, it is characterised in that: air layer is located at phase with flue gas layer in heat exchange unit
In adjacent heat exchange fin, interlayer adverse current heat convection is carried out between air and flue gas.
6. air preheater according to claim 1, it is characterised in that: the heat exchange fin flow channel in heat exchange unit is adopted
With unipath or biasing access setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025678.3A CN110030574A (en) | 2018-01-11 | 2018-01-11 | A kind of compact regenerative air heater of Stirling engine external combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025678.3A CN110030574A (en) | 2018-01-11 | 2018-01-11 | A kind of compact regenerative air heater of Stirling engine external combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110030574A true CN110030574A (en) | 2019-07-19 |
Family
ID=67234265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810025678.3A Pending CN110030574A (en) | 2018-01-11 | 2018-01-11 | A kind of compact regenerative air heater of Stirling engine external combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030574A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1421021A (en) * | 1972-01-31 | 1976-01-14 | Nippon Denso Co | Heat exchangers |
| EP0246486A1 (en) * | 1986-05-06 | 1987-11-25 | STEIN INDUSTRIE Société Anonyme dite: | Exchanger for heating air under pressure in counter flow with fumes circulating in tube bundles |
| CN1682021A (en) * | 2002-09-20 | 2005-10-12 | 穆丹制造公司 | Internally mounted radial flow intercooler for a combustion air charger |
| CN201242379Y (en) * | 2008-05-09 | 2009-05-20 | 苏州森光换热器有限公司 | Novel adverse current plate heat exchanger |
| CN102317731A (en) * | 2009-01-07 | 2012-01-11 | 泽斯股份有限公司 | Heat exchanger and production and preparation method thereof |
| CN102840777A (en) * | 2012-08-01 | 2012-12-26 | 北京丰凯换热器有限责任公司 | Aluminum plate-fin type annular heat radiator with radially flowing fluid |
| CN202757145U (en) * | 2012-07-23 | 2013-02-27 | 陈立德 | Partition plate type heat exchanging device |
| CN103335546A (en) * | 2013-05-09 | 2013-10-02 | 合肥通用机械研究院 | Plate type heat exchanger |
-
2018
- 2018-01-11 CN CN201810025678.3A patent/CN110030574A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1421021A (en) * | 1972-01-31 | 1976-01-14 | Nippon Denso Co | Heat exchangers |
| EP0246486A1 (en) * | 1986-05-06 | 1987-11-25 | STEIN INDUSTRIE Société Anonyme dite: | Exchanger for heating air under pressure in counter flow with fumes circulating in tube bundles |
| CN1682021A (en) * | 2002-09-20 | 2005-10-12 | 穆丹制造公司 | Internally mounted radial flow intercooler for a combustion air charger |
| CN201242379Y (en) * | 2008-05-09 | 2009-05-20 | 苏州森光换热器有限公司 | Novel adverse current plate heat exchanger |
| CN102317731A (en) * | 2009-01-07 | 2012-01-11 | 泽斯股份有限公司 | Heat exchanger and production and preparation method thereof |
| CN202757145U (en) * | 2012-07-23 | 2013-02-27 | 陈立德 | Partition plate type heat exchanging device |
| CN102840777A (en) * | 2012-08-01 | 2012-12-26 | 北京丰凯换热器有限责任公司 | Aluminum plate-fin type annular heat radiator with radially flowing fluid |
| CN103335546A (en) * | 2013-05-09 | 2013-10-02 | 合肥通用机械研究院 | Plate type heat exchanger |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20190719 |