CN107300332A - A kind of two-tube pass heat exchanger - Google Patents
A kind of two-tube pass heat exchanger Download PDFInfo
- Publication number
- CN107300332A CN107300332A CN201610230400.0A CN201610230400A CN107300332A CN 107300332 A CN107300332 A CN 107300332A CN 201610230400 A CN201610230400 A CN 201610230400A CN 107300332 A CN107300332 A CN 107300332A
- Authority
- CN
- China
- Prior art keywords
- cavity
- tube
- heat exchanger
- condensation chamber
- high vacuum
- 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.)
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Classifications
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0417—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to technical field of heat exchangers, more particularly to a kind of two-tube pass heat exchanger, including condensation chamber, evaporation cavity is connected by rise and fall pipe below described condensation chamber, one closing condition of high vacuum degree cavity of cavity formation between described evaporation cavity, condensation chamber and rise and fall pipe, low boiling working media is filled in described closing condition of high vacuum degree cavity, refrigerant tube bank is installed in described condensation chamber, heating agent tube bank is installed, it is for straight tube beam that described refrigerant tube bank and heating agent, which are restrained in the heat exchange for sewage, in described evaporation cavity.A kind of two-tube pass heat exchanger with multigroup series connection or multigroup parallel connection in use, different low boiling working medias can be filled in the cavity of re-closed condition of high vacuum degree as needed.The beneficial effects of the invention are as follows：The coefficient of heat transfer can be effectively improved, heat exchange area reduces, and weight of equipment is reduced, cost reduction, the equipment for completing identical heat exchange amount, weight is only the 35~66% of shell-and-tube heat exchanger.
Description
Technical field
The present invention relates to technical field of heat exchangers, more particularly to a kind of two-tube pass heat exchanger.
Background technology
Heat exchanger is the equipment that the partial heat of hot fluid is passed to cold fluid.Exchange capability of heat by heat exchanging fluid property,
The factors such as the heat exchanging fluid temperature difference, the flow velocity of fluid, the geometry of heat-transfer surface are determined.Heat exchanging fluid property is fluid itself
Characteristic, it is difficult to change, meanwhile, heat transfer temperature difference is technical conditions of the heat exchanging fluid under specific operation, it is also difficult to changed.Therefore,
Exchange capability of heat is improved, it is necessary to geometrically suitably being changed with rate of flow of fluid in heat transmission equipment.In normal work, by
Larger in the circulation area of the shell-side fluid of shell-and-tube heat exchanger, flow velocity is difficult to improve, and constrains exchange capability of heat raising；It is board-like to change
The circulation crack limited width of hot device, liquid is in 1mm~3mm spatial flow, and resistance exponentially changes, consumption additionaling power compared with
Greatly, economy is far inferior to Bottomhole pressure, and index variation is presented with the coefficient of heat transfer in flow velocity.Currently, wide-runner plate heat exchanger is able to
Using heat exchange film layer is thickened, and is unfavorable for improving heat exchange efficiency；Especially for the heat exchange of sewage, the reduction of flow rate of liquid is unfavorable for
Take out stains.
The content of the invention
In order to solve problem of the prior art, the invention provides one kind energy-conservation, efficient two-tube pass heat exchanger.
Technical scheme of the present invention is as follows：
Evaporation cavity is connected by rise and fall pipe below a kind of two-tube pass heat exchanger, including condensation chamber, described condensation chamber,
One closing condition of high vacuum degree cavity of cavity formation between described evaporation cavity, condensation chamber and rise and fall pipe, described closing
Fill and be provided with low boiling working media, described condensation chamber in refrigerant tube bank, described evaporation cavity in condition of high vacuum degree cavity
Heating agent tube bank is installed.
Described refrigerant tube bank and heating agent tube bank are that for straight tube beam, can realize backwash in the heat exchange for sewage,
Improve the service life of equipment.
A kind of two-tube pass heat exchanger in use, can with multigroup series connection, to improve heat transfer temperature difference, can also carry out it is multigroup simultaneously
Connection,, can re-closed condition of high vacuum degree as needed under multigroup series connection or multigroup operating mode in parallel to adapt to big flow heat-exchange system
Cavity in fill different low boiling working medias.
The beneficial effect that the technical scheme that the present invention is provided is brought is：
Flowed by the way that the refrigerant and heating agent of heat exchanging fluid are all designed in tube side, cold and hot bundle profile is into cavity, cavity
A certain degree of vacuum is inside pumped into, and fills low boiling working media, and segmentation can be realized, heat transfer temperature difference is effectively improved.In circulation
Under the premise of resistance raising is limited, flow velocity is effectively improved, and heat transfer temperature difference is improved so that the coefficient of heat transfer is improved, heat exchange
Area reduces, and weight of equipment is reduced, cost reduction.
Being formed in closing condition of high vacuum degree cavity tends to the conductor of zero thermal resistance, and low thermal resistance, which exchanges heat, causes heat exchange loss to reduce.
Being effectively increased for flow velocity, increases substantially the coefficient of heat transfer so that the coefficient of heat transfer than shell-and-tube heat exchanger 3~5 times of increase, it is but many
Go out a tube wall heat transfer process, Comprehensive Correlation, with reference to actual measurement data, the equipment for completing identical heat exchange amount, weight is only
The 35~66% of shell-and-tube heat exchanger.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
As shown in figure 1, a kind of two-tube pass heat exchanger, including condensation chamber 2, the described lower section of condensation chamber 2 passes through rise and fall
Pipe 1 connects one closing high vacuum of cavity formation between evaporation cavity 4, described evaporation cavity 4, condensation chamber 2 and rise and fall pipe 1
Spend and low boiling working media is filled in cavity, described closing condition of high vacuum degree cavity, provided with refrigerant tube bank in described condensation chamber 2
3, described evaporation cavity 4 is interior provided with heating agent tube bank 5.
Described refrigerant tube bank 3 and heating agent tube bank 5 are that for straight tube beam, can realize backwash in the heat exchange for sewage,
To improve the service life of equipment.
A kind of two-tube pass heat exchanger in use, can with multigroup series connection, to improve heat transfer temperature difference, can also carry out it is multigroup simultaneously
Connection,, can re-closed condition of high vacuum degree as needed under multigroup series connection or multigroup operating mode in parallel to adapt to big flow heat-exchange system
Cavity in fill different low boiling working medias.
During work, heating agent fluid (water) enters heating agent tube bank 5, and heating agent fluid is in flow process, the tube wall of heating agent tube bank 5
Temperature is improved so that low boiling working media in evaporation cavity 4 turns into after HTHP gas-liquid mixture, into condensation chamber 2,
In condensation chamber 2, HTHP gas-liquid mixture condenses heat release in the outer wall that refrigerant restrains 3, restrains 3 pairs of refrigerants by refrigerant and restrains
Refrigerant fluid is heated in 3.When evaporation cavity 4 is equal with gas-liquid mixture temperature in condensation chamber 2, heat transfer process is realized
In tend to zero thermal resistance.Refrigerant fluid is restrained in 4 in refrigerant tube bank 2 and heating agent respectively with heating agent fluid, and it is several that cold fluid and hot fluid is mixed
Rate is reduced, and is conducive to the heat exchange of dangerous fluid.Refrigerant fluid is restrained in 4 in the beam of refrigerant pipe 3 and heating agent respectively with heating agent fluid,
Because single tube diameter is smaller, bearing capacity is strong, can be used for the heat exchange of relatively high pressure liquid.Single group device can be to the stream of cold fluid and hot fluid
Amount is designed so that device is easy to standardized production, is conducive to the series connection of equipment and used in parallel.
Following test is done to present device：
To carry out 10m3Tested exemplified by bath sewage heat recovery, wherein 35 DEG C of bath sewage inlet temperature,
Water-carrying capacity is 40m3/ h, heating 10m is carried out by present invention heat exchanger3Clear water, clear water inlet temperature is 10 DEG C, and water-carrying capacity is
40m3/ h, selects diameter 25mm, wall thickness is 2.5mm, and inwall carries out the middle low-pressure boiler pipe of enamel processing as heat exchanger tube, cold
Heat pipe bundle quantity is 24, length 2m.Shell-and-tube heat exchanger selection tube side selection 48, length 2m are contrasted, and is carried out in shell side
Four bafflings, weight of equipment is basically identical.
By 1 hour circulation temperature lowering, present invention heat exchanger bath sewage temperature was reduced to 24.6 DEG C, and sewage thermal discharge is
4.186 × 10 × 1000 × (35-24.6)/3600=120.92kW；Total heat exchange area (25-2 × 2.5) × 10-3 × 0.02 ×
3.14 × 2 × 48=6.0228 ㎡；Clear water temperature is increased to 20 DEG C, and heat exchange logarithmic temperature difference isIntegrated heat transfer coefficient is 120.92 × 1000/14.79/6.0228=1357w/
(㎡·℃)；
And shell-and-tube heat exchanger bath sewage temperature is reduced to 30 DEG C, sewage thermal discharge is 4.186 × 10 × 1000 × (35-
30)/3600=58.14kW；Total heat exchange area (25-2 × 2.5) × 10-3 × 0.02 × 3.14 × 2 × 48=6.0228 ㎡；Clearly
Water is increased to 14.8 DEG C, and heat exchange logarithmic temperature difference isIntegrated heat transfer coefficient be 58.14 ×
1000/20.1/6.0228=480w/ (㎡ DEG C).
To sum up, consistent in total heat exchange area, under the premise of engineering boundary is consistent, the coefficient of heat transfer of two-tube pass heat exchanger is substantially big
In shell-and-tube heat exchanger.Using numerical simulation analysis, in 0.5~2m/s of tube side flow velocity is interval, the hot device advantage of two-tube-pass pipe is bright
It is aobvious, when tube side flow velocity is less than 0.1m/s, difference of them very little.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (3)
1. pass through rise and fall Guan Lian below a kind of two-tube pass heat exchanger, it is characterised in that including condensation chamber, described condensation chamber
One closing condition of high vacuum degree cavity of cavity formation between logical evaporation cavity, described evaporation cavity, condensation chamber and rise and fall pipe, institute
Filled in the closing condition of high vacuum degree cavity stated and refrigerant tube bank is installed in low boiling working media, described condensation chamber, it is described
Heating agent tube bank is installed in evaporation cavity.
2. a kind of two-tube pass heat exchanger according to claim 1, it is characterised in that described refrigerant tube bank and heating agent tube bank
It is for straight tube beam in the heat exchange for sewage.
3. the use of a kind of two-tube pass heat exchanger according to claim 1, it is characterised in that can be with single group, multigroup series connection
Or it is multigroup used in parallel, it is multigroup series connection or it is multigroup used in parallel when, can as needed close condition of high vacuum degree cavity in fill
Fill different low boiling working medias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230400.0A CN107300332A (en) | 2016-04-14 | 2016-04-14 | A kind of two-tube pass heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230400.0A CN107300332A (en) | 2016-04-14 | 2016-04-14 | A kind of two-tube pass heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107300332A true CN107300332A (en) | 2017-10-27 |
Family
ID=60137455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610230400.0A Pending CN107300332A (en) | 2016-04-14 | 2016-04-14 | A kind of two-tube pass heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107300332A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500907A (en) * | 2019-09-27 | 2019-11-26 | 南京工业大学 | A kind of Residual heat removal heat exchanger apparatus using heat pipe as heat conducting element |
| CN114425201A (en) * | 2021-12-21 | 2022-05-03 | 丁妙春 | Industrial waste gas environmental protection clarification plant |
| CN115164452A (en) * | 2022-06-14 | 2022-10-11 | 约克（无锡）空调冷冻设备有限公司 | Condensing device and heat pump system comprising same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109540U (en) * | 1992-01-09 | 1992-07-08 | 田建旭 | Low boiling point in-tube boiling heat exchanger |
| CN101245971A (en) * | 2007-04-10 | 2008-08-20 | 马永锡 | Enclosed cavity type heat exchanger |
| CN101275816A (en) * | 2008-01-08 | 2008-10-01 | 王全龄 | Low water temperature high-efficiency heat exchange tube full solution type evaporator |
| CN101871738A (en) * | 2010-06-22 | 2010-10-27 | 江苏中圣高科技产业有限公司 | Thermal-load adjustable high-efficiency heat exchanger |
| CN205537205U (en) * | 2016-04-14 | 2016-08-31 | 济南岳华节能设备有限公司 | Double -barrelled journey heat exchanger |
-
2016
- 2016-04-14 CN CN201610230400.0A patent/CN107300332A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109540U (en) * | 1992-01-09 | 1992-07-08 | 田建旭 | Low boiling point in-tube boiling heat exchanger |
| CN101245971A (en) * | 2007-04-10 | 2008-08-20 | 马永锡 | Enclosed cavity type heat exchanger |
| CN101275816A (en) * | 2008-01-08 | 2008-10-01 | 王全龄 | Low water temperature high-efficiency heat exchange tube full solution type evaporator |
| CN101871738A (en) * | 2010-06-22 | 2010-10-27 | 江苏中圣高科技产业有限公司 | Thermal-load adjustable high-efficiency heat exchanger |
| CN205537205U (en) * | 2016-04-14 | 2016-08-31 | 济南岳华节能设备有限公司 | Double -barrelled journey heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500907A (en) * | 2019-09-27 | 2019-11-26 | 南京工业大学 | A kind of Residual heat removal heat exchanger apparatus using heat pipe as heat conducting element |
| CN114425201A (en) * | 2021-12-21 | 2022-05-03 | 丁妙春 | Industrial waste gas environmental protection clarification plant |
| CN115164452A (en) * | 2022-06-14 | 2022-10-11 | 约克（无锡）空调冷冻设备有限公司 | Condensing device and heat pump system comprising same |
| CN115164452B (en) * | 2022-06-14 | 2024-02-02 | 约克（无锡）空调冷冻设备有限公司 | Condensing equipment reaches heat pump system including it |
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