CN201903225U - Evaporator suitable for CO2 solid and gas two-phase flow - Google Patents
Evaporator suitable for CO2 solid and gas two-phase flow Download PDFInfo
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- CN201903225U CN201903225U CN2010206529590U CN201020652959U CN201903225U CN 201903225 U CN201903225 U CN 201903225U CN 2010206529590 U CN2010206529590 U CN 2010206529590U CN 201020652959 U CN201020652959 U CN 201020652959U CN 201903225 U CN201903225 U CN 201903225U
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Abstract
The utility model relates to an evaporator suitable for the CO2 solid and gas two-phase flow, and belongs to the technical field of refrigeration heat pump. The evaporator with the structure mainly includes a CO2 inlet vertical main channel, a CO2 outlet vertical main channel, a plurality of horizontal evaporation tubes, and annular fins fixed on the outer walls of the evaporation tubes, wherein two ends of each evaporation tube are communicated with the CO2 inlet vertical main channel and the CO2 outlet vertical main channel respectively. The evaporator is characterized in that the annular fins are periodically and unevenly arranged on the circumferences of the outer walls of the evaporation tubes. The evaporator can avoid the generation of phenomena that CO2 solid particles are continuously accumulated in a flow path and the CO2 solid particles in the flow path block a pipe, thereby ensuring that the evaporator suitable for the CO2 solid and gas two-phase flow sublimation process can normally and effectively work.
Description
Technical field
The invention belongs to heat energy utilization and heat pump refrigerating technical field, particularly a kind of evaporimeter that goes for carbon dioxide solid-gas phase sublimation process.
Background technology:
The economic continual and steady rapid growth of China in recent years, the consumption of the energy also significantly increases thereupon, and according to statistics in 2006, the China's Oil interdependency reached 47%.The energy resource consumption that wherein is used for the people's livelihood and building occupies very big proportion; And in consuming in this section, the energy resource consumption of refrigeration air-conditioner accounts for 30-50%.Therefore very important at the power-saving technology of this part.Heat pump techniques is an advanced person's a power-saving technology, has very big potentiality, can be widely used in the people's livelihood and the building, and refrigeration air-conditioner and heat supply etc. are provided, and is the efficient use and energy-conservation the contributing of this part energy.Heat pump mainly is made up of compressor, expander, evaporimeter and condenser, and evaporator section wherein is the important component part of system, and is most important to the efficient operation of system.The evaporimeter of heat pump commonly used all is that the liquid state or the gas-liquid two-phase state of working medium absorbs heat by evaporation process as its name suggests, thereby finishes the function of evaporimeter, reaches the purpose of refrigeration.But the cryogenic temperature that this evaporimeter can provide is limited in scope, generally at-30 ℃-0 ℃.
In order to satisfy the more refrigeration demand of low temperature, can use CO
2The refrigerating method of solid-gas phase and CO
2The steam compression heat pump system, in the evaporimeter of this system, CO
2Solid-gas phase passes through CO
2The distillation of solid particle reaches the absorption heat, the purpose of cooling refrigeration.Figure 1 shows that general CO
2Evaporation structure, this structure comprises CO
2Vertical main channel 11, CO enter the mouth
2Export vertical main channel 12, many horizontal evaporation tubes 13, be fixed on the ring wing 14 of evaporation tube outer wall, wherein each evaporation tube 13 two ends respectively with CO
2Vertical main channel 11 and CO enter the mouth
2Export vertical main channel 12 and be connected, on the outer wall circumference of the evaporation tube 13 that ring wing 14 is evenly arranged in, be used to promote heat transfer process; With CO
2Vertical main channel 11 and CO enter the mouth
2Export and be respectively equipped with the adjustable netted dividing plate 15 in position in the vertical main channel 12, enter other parts of heat pump refrigerating system in order to exclude than macroparticle.
Its course of work: medium to be cooled is horizontal in evaporation pipeline, low temperature CO
2Gu-gas two phase flow is from CO
2The vertical main channel 11 that enters the mouth enters, by being converted into gaseous state CO behind each evaporation tube 13
2, converge at CO
2Export vertical main channel 12, and enter subsequent parts from 12 outlets of vertical main channel.Finish the refrigerating function for the treatment of cooling medium.
In this evaporimeter, ring wing 14 is for being evenly distributed on the evaporator tube.This structure is at low temperature CO
2In the solid-gas phase evaporation and heat-exchange process because CO arranged in pipeline
2The existence of solid particle may be stopped up the passage in the evaporimeter.And then block the peripheral passage of whole heat pump working medium, influence the normal operation of system, even cause danger and accident.
Summary of the invention
The purpose of the utility model patent is in order to overcome the weak point of prior art, to propose a kind of CO that is applicable to
2The evaporator of solid-gas phase can be realized CO
2Solid-gas phase can not block boiler channel in the distillation endothermic process.
The utility model proposes a kind of CO of being applicable to
2The evaporimeter of solid two phase flow, this structure evaporimeter mainly comprises: CO
2Vertical main channel, CO enter the mouth
2Export vertical main channel, many horizontal evaporation tubes, be fixed on the ring wing of evaporation tube outer wall, wherein each evaporation tube two ends respectively with CO
2Vertical main channel and CO enter the mouth
2Export vertical main channel and be connected, it is characterized in that, on the outer wall circumference of this ring wing for the non-homogeneous evaporation tube that is arranged in of periodicity.
Characteristics of the present utility model and beneficial effect:
CO in the evaporimeter of the present utility model
2The working medium stream generally adopts horizontal positioned.Because this stream contains CO
2Solids are different from general inlet gas liquid type or liquid-type evaporimeter, the CO in the stream
2Solids possibility total blockage pipeline, thus cause the pressure jump in the refrigeration system unusual, influence the operate as normal of system, even the whole refrigeration system of paralysing; Perhaps CO
2The accumulation of solids in stream may reduce flow, makes the operation off-design operating mode of system, has influence on the efficient of system.The utility model adopts the unique design of fin-tube type structure, can strengthen local heat transfer exchange capability of heat, can effectively avoid the CO2 solids in stream lasting accumulation and stream in CO
2The generation of solids blocking pipeline phenomenon.
CO of the present utility model
2The evaporimeter of solid-gas phase is applicable to CO
2Vapor compression refrigeration device is CO in its evaporimeter
2Solid-gas phase distillation flow process, evaporimeter adopts the gas source formula, and mentioned wind speed refers to the wind speed of this gas source; Water vapour mass content in this gas source must be less than 0.1%.
Description of drawings
Fig. 1 is the structural representation of general evaporimeter.
Fig. 2 adopts the utility model example structure and the effect schematic diagram that does not adopt the present embodiment structure; Wherein:
Fig. 2 (a) is the effect schematic diagram that adopts the utility model example structure,
Fig. 2 (b) is the effect schematic diagram that does not adopt the present embodiment structure.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated:
The CO that is applicable to of the present utility model
2The evaporimeter of solid two phase flow, its basic structure is identical with the structure of general design, as shown in Figure 1, comprises CO
2Vertical main channel 11, CO enter the mouth
2Export vertical main channel 12, many horizontal evaporation tubes 13, be fixed on the ring wing 14 of evaporation tube outer wall, wherein each evaporation tube two ends respectively with CO
2Vertical main channel and CO enter the mouth
2Export vertical main channel and be connected, difference of the present utility model is, on the outer wall circumference of this ring wing 14 for the non-homogeneous evaporation tube that is arranged in 13 of periodicity.
The shape of above-mentioned ring wing does not have specific restriction can adopt general circular design, can adopt square, rectangle, other polygon or irregularly shaped yet, and the thickness of ring wing adopts general design.
Ring wing of the present utility model 14 height (from the evaporation tube outer wall to the distance the ring wing edge) also can be: from the evaporation tube porch every 12D～15D, at its upstream 2D to the ring wing height at downstream 2D place be that the interior ring wing height in other interval is high by 1/3～4/5; From evaporator inlet to the 6D length of interval, ring wing height be that other ring wing height in interval is high by 1/2～3/5, other interval is all intervals in addition, above-mentioned interval.
The arrangement of above-mentioned ring wing and height
Adopt the following parameter of employing of embodiment of the present utility model:
CO
2The solid-gas phase evaporation tube: internal diameter is the copper pipe of 0.01m;
Ring wing: aluminum ring wing;
Pipeline porch CO
2The mass percent of solids is 0.2 in the solid-gas phase;
The characteristics of present embodiment are for from the pipeline porch, and every 12D=0.12m place, to encircle the wing spacing to the 2D=0.02m length of interval of downstream be 2mm to 2D=0.02m at its upstream; Along flow direction, in the 6D=0.06m scope of pipeline porch, ring wing spacing is 1.5mm simultaneously;
The wing spacing that other is interval: 3mm;
The wing height that other is interval: 0.01m;
Other interval wing is thick: 0.2mm.
The present embodiment structure after tested, evaporimeter internal flow mean temperature is at-68 ℃, average pressure is at 0.4MPa, pressure and temperature change very little in time, present stable tendency, shown in Fig. 2 (a), SP is the suction pressure line, ET is the evaporating temperature line.This figure shows the CO of present embodiment structure
2The solid-gas phase evaporimeter can steady in a long-term move.On the contrary, if there is not this design, promptly encircles wing and all adopt other interval interior parameter, CO
2Solids then can block the circulation pipeline.Its ruuning situation is shown in Fig. 2 (b), and SP and ST are respectively suction pressure and inlet temperature line.This obstruction can cause the sudden change of interior temperature of evaporimeter and pressure, so the system's cisco unity malfunction that causes evaporimeter and be connected.
Claims (4)
1. one kind is applicable to CO
2The evaporimeter of solid two phase flow, this structure evaporimeter mainly comprises: CO
2Vertical main channel, CO enter the mouth
2Export vertical main channel, many horizontal evaporation tubes, be fixed on the ring wing of evaporation tube outer wall, wherein each evaporation tube two ends respectively with CO
2Vertical main channel and CO enter the mouth
2Export vertical main channel and be connected, it is characterized in that, on the outer wall circumference of this ring wing for the non-homogeneous evaporation tube that is arranged in of periodicity.
2. evaporimeter as claimed in claim 1 is characterized in that, being shaped as of described ring wing is circular, square, rectangle or polygon.
3. evaporimeter according to claim 1, it is characterized in that, described ring wing is arranged as: begin in this evaporator tube porch, encircle wing spacing for other in interval every the upstream 2D at the interval of 12D～15D ring wing spacing to the 2D length of interval of downstream and reduce 1/3～4/5; Along flow direction, to the 6D scope, ring wing spacing reduces 1/2～3/5 for other interval interior ring wing spacing from the evaporation tube porch simultaneously, and other interval is all intervals beyond the above-mentioned interval, and D is the evaporation tube diameter.
4. as evaporimeter as described in the claim 1,2 or 3, it is characterized in that described ring wing (14) highly is: every 12D～15D, 2D is that other ring wing height in interval is high by 1/3～4/5 to the ring wing height at downstream 2D place at its upstream from the evaporation tube porch; From evaporator inlet to the 6D length of interval, ring wing height be that other ring wing height in interval is high by 1/2～3/5, other interval is all intervals in addition, above-mentioned interval, D is the evaporation tube diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206529590U CN201903225U (en) | 2010-12-10 | 2010-12-10 | Evaporator suitable for CO2 solid and gas two-phase flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206529590U CN201903225U (en) | 2010-12-10 | 2010-12-10 | Evaporator suitable for CO2 solid and gas two-phase flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903225U true CN201903225U (en) | 2011-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206529590U Expired - Lifetime CN201903225U (en) | 2010-12-10 | 2010-12-10 | Evaporator suitable for CO2 solid and gas two-phase flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903225U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019113327A1 (en) * | 2019-05-20 | 2020-11-26 | Technische Universität Dresden | Heat exchangers and cooling processes |
| CN113190101A (en) * | 2021-06-09 | 2021-07-30 | 楚岳(惠州)热传科技有限公司 | Circulating two-phase flow industrial computer radiator |
-
2010
- 2010-12-10 CN CN2010206529590U patent/CN201903225U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019113327A1 (en) * | 2019-05-20 | 2020-11-26 | Technische Universität Dresden | Heat exchangers and cooling processes |
| US11994346B2 (en) | 2019-05-20 | 2024-05-28 | Technische Universitat Dresden | Heat exchanger and cooling method |
| CN113190101A (en) * | 2021-06-09 | 2021-07-30 | 楚岳(惠州)热传科技有限公司 | Circulating two-phase flow industrial computer radiator |
| CN113190101B (en) * | 2021-06-09 | 2022-05-10 | 楚岳(惠州)热传科技有限公司 | Circulating two-phase flow industrial computer radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING GONGDAO ENVIRONMENTAL PROTECTION TECHNOLOG Free format text: FORMER OWNER: SHAOXING INSTITUTE OF TECHNOLOGY OF COLLEGE OF ENGINEERING, PEKING UNIVERSITY Effective date: 20150508 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 312000 SHAOXING, ZHEJIANG PROVINCE TO: 100094 HAIDIAN, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150508 Address after: 100094, No. 13, building, No. 3, Feng Xiu Middle Road, Beijing, Haidian District Patentee after: Beijing road environmental protection technology Co., Ltd. Address before: 312000 Zhejiang province Shaoxing Paojiang Industrial Zone together intersection of Beijing University of technology, Shaoxing Institute of technology 419 room Patentee before: Shaoxing Institute of Technology, College of Engineering, PKU |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180903 Address after: 100094 Building 1, Cui Hunan Ring Road, Sujia Tuo Town, Haidian District, Beijing, 1 Patentee after: Beijing Collaborative Innovation Institute Address before: 100094 building 13, 3, Fung Xiu Road, Haidian District, Beijing. Patentee before: Beijing road environmental protection technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
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| CX01 | Expiry of patent term |