CN202853431U - Organic Rankine cycle evaporator used for engine exhaust emission waste heat recovery - Google Patents
Organic Rankine cycle evaporator used for engine exhaust emission waste heat recovery Download PDFInfo
- Publication number
- CN202853431U CN202853431U CN2012205054786U CN201220505478U CN202853431U CN 202853431 U CN202853431 U CN 202853431U CN 2012205054786 U CN2012205054786 U CN 2012205054786U CN 201220505478 U CN201220505478 U CN 201220505478U CN 202853431 U CN202853431 U CN 202853431U
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- CN
- China
- Prior art keywords
- tube sheet
- working medium
- heat exchanger
- organic working
- organic
- 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.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0058—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having different orientations to each other or crossing the conduit for the other heat exchange medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F2009/0285—Other particular headers or end plates
- F28F2009/029—Other particular headers or end plates with increasing or decreasing cross-section, e.g. having conical shape
Abstract
The utility model discloses an organic Rankine cycle evaporator used for engine exhaust emission waste heat recovery, and belongs to the technical field of energy conservation and emission reduction. An exhaust emission inlet (2) and an exhaust emission outlet (3) are respectively connected with the upper end surface and the lower end surface of a shell body (1), round cross fins (9) are sleeved on horizontally arranged heat exchange pipes (8), the heat exchange pipes (8) are connected with the shell body (1) through a left fixing tube sheet (3) and a right fixing tube sheet (11), outside the heat exchange pipes, high temperature exhausted gas flows in a space formed by the left fixing tube sheet (3), the right fixing tube sheet (11) and the shell body (1), a left tube box (4) is a sealed space formed by the shell body (1) and the left fixing tube sheet (3), a right tube box (10) is another sealed space formed by the shell body (1) and the right fixing tube sheet (11), no high temperature waste flowing exists in the sealed spaces, high pressure organic working medium flows inside the heat exchange pipes (8), an organic working medium inlet (6) and an organic working medium outlet (5) are connected with the left tube box (4), and overall trending of cross flow arrangement is formed in a counter flow type. The organic Rankine cycle evaporator used for the engine exhaust emission waste heat recovery is compact in design structure, and quite favorable for various vehicle engines, in particular for automotive gasoline engines.
Description
Technical field
The utility model relates to a kind of engine exhaust heat recovery and uses the organic Rankine circulating evaporator, belongs to the energy-conserving and emission-cutting technology field.
Background technology
The heat energy that the fuel combustion of current vehicular engine produces only has sub-fraction to be converted into useful work output, also has convection current and the heat loss through radiation of exhaust, cooling system and the engine body of nearly 2/3rds the launched machine of heat energy to consume in vain.If this energy of partly wasting can be utilized effectively, can improve on the one hand the overall thermal efficiency of engine fuel, save energy-output ratio, on the other hand, to the heat radiation of environment, improve environmental quality, the trend of slowing global warming in the time of can reducing the engine acting.
Utilize at present the method for the discarded waste heat of engine to mainly contain: to utilize the waste heat heating, utilize the thermo-electric generation of high exhaust temperatures, utilize the adsorption type heat pump refrigeration of waste heat and utilize organic Rankine circulating generation or the output useful work of waste heat.Utilize the waste heat heating can utilize preferably the waste heat of engine in the winter time, but when do not need to warm oneself other season, can't take full advantage of the waste heat of engine.Utilize the thermo-electric generation technology to be subject to the low restriction of conversion efficiency, also can't realize practical application at present.Often volume is too large to utilize the adsorption type heat pump refrigerating plant, and efficient is not high, also is not suitable for vehicular engine and uses.Utilizing the heat recovery technology of organic Rankine circulation is the highest in current efficient, adopt organic rankine cycle system at present also in conceptual phase, evaporimeter is the key equipment of the waste heat recovery of organic Rankine circulation, and the evaporimeter difficulty that the vehicle instructions for use is satisfied in design is very large.
The utility model content
The purpose of this utility model is to provide a kind of engine exhaust heat simple and compact for structure, that heat exchange area is large, exhaust resistance is little, reliability is high, easy to installation and maintenance to reclaim and uses the organic Rankine circulating evaporator.
In order to realize above-mentioned target, the utility model adopts following technical solution: described a kind of engine exhaust heat reclaims uses the organic Rankine circulating evaporator, it comprises housing 1, exhaust gas intake port 2, air exit 7, organic working medium import 6, organic working medium outlet 5, heat exchanger tube 8, circle fin 9, left fixed tube sheet 3, right fixed tube sheet 11, left pipe box 4, right pipe box 10, it is characterized in that: exhaust gas intake port 2 links to each other with the lower surface with housing 1 upper surface respectively with air exit 7, cover has circular horizontal fin sheet 9 and passes through left fixed tube sheet 3 on the horizontally disposed heat exchanger tube 8, right fixed tube sheet 11 links to each other with housing 1, outside heat exchanger tube, left fixed tube sheet 3, what flow in the space that right fixed tube sheet 11 and housing 1 form is high-temperature exhaust air, two airtight spaces that left pipe box 4 and right pipe box 10 are comprised of with left fixed tube sheet 3 and right fixed tube sheet 11 respectively housing 1, there is not high-temp waste gas to flow in it, heat exchanger tube 8 interior mobile be the organic working medium of high pressure, the import 6 of organic working medium links to each other with left pipe box 4 with outlet 5, and forming general trend is the cross-current layout of adverse current type.
Described heat exchanger tube 8 adopts the design of single tube journey, and heat-exchanging tube bundle adopts the fork of equilateral triangle to arrange and puts pattern, and the circular horizontal fin 9 of cover is high fin on the heat exchanger tube 8.
Described exhaust gas intake port 2 links to each other with waste pipe by flange with air exit 7, and organic working medium import 6 links to each other by the pipeline of flange with the organic Rankine circulation with organic working medium outlet 5.
Described exhaust gas intake port 2 and air exit 7 adopt respectively conical diffuser.
The utility model has the advantages that:
1, adopts the heat-exchanging tube bundle of fin-tube type, the condition of work of HTHP in the time of can tolerating on the one hand heat exchange between engine exhaust and the organic working medium, has on the other hand very large heat exchange area, gas heat-transfer for low convection transfer rates such as engine exhausts, can so that project organization is compacter, be very beneficial for using on the vehicle.
2, adopt the high horizontal fin sheet tube bank of fork row to arrange, the turbulence intensity when being conducive to improve engine exhaust has on the one hand improved the convection transfer rate of high-temperature exhaust air, can reduce on the other hand the resistance of engine exhaust, is conducive to improve the net power output of engine.
3, heat-exchanging tube bundle adopts the horizontally disposed pattern of single tube journey, and is arranged to the cross-current that general trend becomes adverse current type, is conducive to organic working medium flowing and conducting heat when the evaporation gasification, so that the structure of evaporimeter densification further.
4, the shell-side of evaporimeter be connected being connected of side and exterior line and adopt flange to connect, be conducive to install and later cleaning and maintenance.
The utility model can be applicable to various vehicular engines, especially vehicular petrol engine.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A cross-sectional schematic among Fig. 1.
Among the figure: the 1-housing; 2-exhaust gas intake port; 3-left fixed tube sheet; 4-left pipe box; The outlet of 5-organic working medium; The import of 6-organic working medium; 7-air exit; 8-heat exchanger tube; 9-circle fin; 10-right pipe box; 11-right fixed tube sheet.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of engine exhaust heat of the present utility model reclaims uses the organic Rankine circulating evaporator, its structural representation as shown in Figure 1, it comprises housing 1, exhaust gas intake port 2, air exit 7, organic working medium import 6, organic working medium outlet 5, heat exchanger tube 8, circle fin 9, left fixed tube sheet 3, right fixed tube sheet 11, left pipe box 4, right pipe box 10.Exhaust gas intake port 2 links to each other with the lower surface with housing 1 upper surface respectively with air exit 7, and cover has circular horizontal fin sheet 9 also to link to each other with housing 1 by left fixed tube sheet 3, right fixed tube sheet 11 on the horizontally disposed heat exchanger tube 8.Outside heat exchanger tube, what flow in the space that left fixed tube sheet 3, right fixed tube sheet 11 and housing 1 form is high-temperature exhaust air; Left pipe box 4 and right pipe box 10 do not have high-temp waste gas to flow by two airtight spaces that housing 1 forms with left fixed tube sheet 3 and right fixed tube sheet 11 respectively in it; Heat exchanger tube 8 interior mobile be the organic working medium of high pressure.The import 6 of organic working medium links to each other with left pipe box 4 with outlet 5, and forming general trend is the cross-current layout of adverse current type.
Heat exchanger tube 8 adopts the design of single tube journey, and heat-exchanging tube bundle adopts the fork of equilateral triangle to arrange and puts pattern, and the circular horizontal fin 9 of cover is high fin on the heat exchanger tube 8.
Exhaust gas intake port 2 links to each other with waste pipe by flange with air exit 7, and organic working medium import 6 links to each other by the pipeline of flange with the organic Rankine circulation with organic working medium outlet 5.
Exhaust gas intake port 2 and air exit 7 adopt respectively conical diffuser.
Specific works process of the present utility model is as follows:
After vehicular engine is started working, the high-temperature exhaust air that engine is discharged flows into evaporimeter and heats heat exchanger tube 8 through exhaust gas intake port 2 from the upstream of blast pipe, the engine exhaust of low temperature enters the downstream of blast pipe through air exit 7 afterwards, and finally is discharged in the atmospheric environment.Meanwhile, the working medium pump starting of organic Rankine circulation, through the high pressure organic working medium of organic working medium import 6 to heat exchanger tube 8 transporting low temperature liquid state, in organic working medium is flowed through the process of heat exchanger tube 8, absorb gradually the heat from the outer high-temperature exhaust air of pipe, and become saturated liquid, follow and then evaporation gasification generation saturated gas, the organic working medium saturated gas of HTHP is exported to the decompressor of organic Rankine circulation by pipeline through organic working medium outlet 5, in decompressor, become the overheated gas of low pressure behind the expansion output useful work, become the saturated liquid of low temperature through condenser condenses after, again flow to again working medium pump and carry out next one circulation.
Claims (4)
1. an engine exhaust heat reclaims and uses the organic Rankine circulating evaporator, it comprises housing (1), exhaust gas intake port (2), air exit (7), organic working medium import (6), organic working medium outlet (5), heat exchanger tube (8), circle fin (9), left fixed tube sheet (3), right fixed tube sheet (11), left pipe box (4), right pipe box (10), it is characterized in that: exhaust gas intake port (2) links to each other with the lower surface with housing (1) upper surface respectively with air exit (7), the upper cover of horizontally disposed heat exchanger tube (8) has circular horizontal fin sheet (9) and passes through left fixed tube sheet (3), right fixed tube sheet (11) links to each other with housing (1), outside heat exchanger tube, left fixed tube sheet (3), what flow in the space that right fixed tube sheet (11) and housing (1) form is high-temperature exhaust air, two airtight spaces that left pipe box (4) and right pipe box (10) are comprised of with left fixed tube sheet (3) and right fixed tube sheet (11) respectively housing (1), there is not high-temp waste gas to flow in it, what flow in heat exchanger tube (8) is the organic working medium of high pressure, the import of organic working medium (6) links to each other with left pipe box (4) with outlet (5), and forming general trend is the cross-current layout of adverse current type.
2. a kind of engine exhaust heat according to claim 1 reclaims and uses the organic Rankine circulating evaporator, it is characterized in that: described heat exchanger tube (8) adopts the design of single tube journey, the heat-exchanging tube bundle that heat exchanger tube (8) consists of adopts the fork of equilateral triangle to arrange and puts pattern, and the circular horizontal fin (9) of the upper cover of heat exchanger tube (8) is high fin.
3. a kind of engine exhaust heat according to claim 1 reclaims and uses the organic Rankine circulating evaporator, it is characterized in that: described exhaust gas intake port (2) links to each other with waste pipe by flange with air exit (7), and organic working medium import (6) links to each other by the pipeline of flange with the organic Rankine circulation with organic working medium outlet (5);
4. a kind of engine exhaust heat according to claim 1 reclaims and uses the organic Rankine circulating evaporator, and it is characterized in that: described exhaust gas intake port (2) and air exit (7) adopt respectively conical diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205054786U CN202853431U (en) | 2012-09-28 | 2012-09-28 | Organic Rankine cycle evaporator used for engine exhaust emission waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205054786U CN202853431U (en) | 2012-09-28 | 2012-09-28 | Organic Rankine cycle evaporator used for engine exhaust emission waste heat recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853431U true CN202853431U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205054786U Expired - Fee Related CN202853431U (en) | 2012-09-28 | 2012-09-28 | Organic Rankine cycle evaporator used for engine exhaust emission waste heat recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853431U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180690A (en) * | 2014-08-22 | 2014-12-03 | 苟仲武 | Novel liquid heating and gasification device and method for operating same |
| CN104457334A (en) * | 2013-09-22 | 2015-03-25 | 洛阳蓝海实业有限公司 | Air-water heat exchanger |
| CN105673144A (en) * | 2016-03-01 | 2016-06-15 | 兖州煤业股份有限公司 | Underground diesel trackless rubber-wheeled vehicle and tail gas purification device thereof |
-
2012
- 2012-09-28 CN CN2012205054786U patent/CN202853431U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457334A (en) * | 2013-09-22 | 2015-03-25 | 洛阳蓝海实业有限公司 | Air-water heat exchanger |
| CN104180690A (en) * | 2014-08-22 | 2014-12-03 | 苟仲武 | Novel liquid heating and gasification device and method for operating same |
| CN104180690B (en) * | 2014-08-22 | 2016-04-06 | 苟仲武 | A kind of new liquid intensification gasification installation and method of work |
| CN105673144A (en) * | 2016-03-01 | 2016-06-15 | 兖州煤业股份有限公司 | Underground diesel trackless rubber-wheeled vehicle and tail gas purification device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130928 |