CN111119973A - Air cooler suitable for high-humidity high-dust environment and design method thereof - Google Patents
Air cooler suitable for high-humidity high-dust environment and design method thereof Download PDFInfo
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- CN111119973A CN111119973A CN201811273444.7A CN201811273444A CN111119973A CN 111119973 A CN111119973 A CN 111119973A CN 201811273444 A CN201811273444 A CN 201811273444A CN 111119973 A CN111119973 A CN 111119973A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
Abstract
The invention discloses an air cooler suitable for a high-humidity high-dust environment, which comprises a shell and a heat exchanger assembly, wherein the heat exchanger assembly comprises a group of vertical oval light tube arrays arranged in parallel, a group of liquid supply tubes are arranged on two sides of each light tube array, a liquid distributor is arranged at the tail end of each liquid supply tube, a plurality of liquid distribution tubes are arranged in each liquid distributor, and the liquid supply tubes are communicated with the oval light tubes through the liquid distribution tubes; the coolant flow direction is perpendicular to the air flow direction. According to the invention, the oval light tubes with specific sizes are adopted to form the heat exchange assembly with a specific array, and a specific flowing heat exchange mode of air and coolant is matched, so that the defects of the existing cooler are effectively overcome, the blockage is not easy to occur, after long-term operation, dirt is convenient to wash, the compressor can return oil normally, and the operation is stable; the heat exchange effect is good, and the whole structure is compact; the air resistance is small, and the energy consumption of the fan is low; the method is suitable for deep well working roadways of coal mines, gold mines, copper mines and the like with high humidity and high dust.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to an air cooler suitable for a high-humidity and high-dust environment and a design method thereof.
Background
Deep well working roadways of coal mines, gold mines, copper mines and the like are generally high-humidity and high-dust environments, and in order to ensure the working efficiency and the health of workers, a refrigerating device is required to cool air in the environments in some cases. The refrigerating devices all relate to a heat exchanger for Freon and high-humidity high-dust air.
The heat exchanger between freon and cooled air in the conventional air conditioner adopts a fin tube form, and the fin spacing is 1-2 mm. When the device is used for cooling the high-humidity and high-dust air to which the device belongs, the fins are easy to block, so that the heat exchange effect is influenced, and even the device cannot work normally. One current solution is to use large fin spacing, typically 6-10mm, but this finned tube does not completely solve the problem of fin plugging and once the fins are plugged, the finned tube structure is not easily cleaned.
Another solution is to use a light pipe heat exchanger. The light pipe heat exchanger can greatly reduce the heat exchange quantity in the unit volume of the heat exchanger, so that the overall structure of the heat exchanger is overlarge, the number of used heat exchange pipes is increased, and the equipment cost is increased. With the use of a bare tube heat exchanger, the number of refrigerant circuits is often difficult to design given the limited space available and the available refrigerant dispensers available. When the number of the refrigerant passages is selected to be small, each passage is long, and the pressure loss of the refrigerant is large; when the number of the refrigerant passages is selected to be larger, each passage can be shortened, but the flow rate of the refrigerant is reduced, and the risk that the compressor cannot return oil smoothly exists.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an air cooler which is suitable for high-humidity high-dust deep well working roadways such as coal mines, gold mines, copper mines and the like aiming at the defects of the prior art;
the invention also aims to provide a design method of the air cooler suitable for the high-humidity high-dust deep well working roadway.
The technical scheme is as follows: the invention relates to an air cooler suitable for a high-humidity high-dust environment, which is characterized in that: the heat exchanger comprises a shell and a heat exchanger assembly, wherein the shell is covered on the heat exchanger assembly, one end of the shell is provided with an air inlet, and the other end of the shell is provided with an air outlet; the heat exchanger component comprises a group of vertical oval light tube arrays arranged in parallel, a group of liquid supply pipes are arranged on two sides of each light tube array, a liquid distributor is arranged at the tail end of each liquid supply pipe, a plurality of liquid distribution pipes are arranged in each liquid distributor, and each liquid supply pipe is communicated with each oval light tube through each liquid distribution pipe; the upper end and the lower end of the elliptical light pipe array are respectively provided with an upper pipe bundle positioning plate and a lower pipe bundle positioning plate; the upper pipe bundle positioning plate and the lower pipe bundle positioning plate are consistent in structure and are provided with fixing holes which are consistent with the distribution of the elliptical light pipes, and two ends of the elliptical light pipes are correspondingly arranged in the fixing holes; the outer sides of the upper tube bundle positioning plate and the lower tube bundle positioning plate are respectively provided with a tube bundle connecting elbow for connecting adjacent elliptical light tubes; the elliptical light tube array is connected with a gas collecting tube, an exhaust port is arranged on the gas collecting tube, and a liquid supply tube mounting hole and an exhaust port mounting hole are arranged at corresponding positions on the shell; the coolant flows in the oval light tube, the air flows between the oval light tube and the shell, and the flow direction of the coolant is perpendicular to the flow direction of the air.
Further, for the improvement heat transfer effect of maximize, overcome current cooler structural defect, avoid blockking up, difficult oil return scheduling problem, the specific dimensional relationship of elliptical light pipe is:
π·do＝2·π·b+4(a-b) ①
in formulae ① and ②, doFor the selected tube outside diameter, a and b are the semimajor and semiminor axis lengths of the elliptical cross-section, respectively, v is the refrigerant vapor flow rate in the evaporator tubemThe mass flow rate of the refrigerant in the evaporator tube, ρ density of the refrigerant vapor, and δ the tube wall thickness.
Further, the liquid supply speed in the liquid supply pipe is 10-15 m/s.
Further, the difference between the saturation temperature corresponding to the inlet pressure of the liquid supply pipe and the saturation temperature corresponding to the outlet pressure of the liquid supply pipe is not more than 3 ℃.
The invention also provides a design method of the air cooler suitable for the high-humidity high-dust environment, which comprises the following steps:
(1) determining the heat exchange quantity of the heat exchanger according to the air inlet and outlet states and the air flow;
(2) determining that tube bundles are arranged in a vertical order to form a light tube array, obtaining an initial design heat exchange area, and designing the size of an elliptical light tube, wherein the design formula is as follows:
π·do＝2·π·b+4(a-b) ①
in formulae ① and ②, doFor the selected tube outside diameter, a and b are the semimajor and semiminor axis lengths of the elliptical cross-section, respectively, v is the refrigerant vapor flow rate in the evaporator tubemThe mass flow rate of the refrigerant in the evaporator pipeline, the density of rho refrigerant steam and delta, the wall thickness of the pipe;
(3) according to the arrangement of the light pipes and the air state parameters, checking a corresponding heat exchange coefficient calculation formula, and calculating and determining the heat exchange coefficient of the air side;
(4) checking a corresponding heat exchange coefficient calculation formula according to the arrangement of the light pipes and the state parameters of the refrigerant, and calculating and determining the heat exchange coefficient of the air side;
(5) determining the total heat transfer coefficient, and calculating according to the following formula:
in formula ③④, FoRepresents the effective heat exchange area of the heat exchange pipeline, Q represents the designed heat exchange quantity of the heat exchanger, KoDenotes the total heat transfer coefficient of the heat exchange tube, diAnd doAre respectively in the pipelineDiameter and outer diameter, aiIs the heat exchange coefficient of the inner surface of the pipe with the refrigerant, aoIs the heat exchange coefficient between the outer surface of the pipeline and the air, and lambda is the heat conductivity coefficient of the material of the pipe wall. According to the effective area F of heat exchangeoAnd the outer diameter d of the pipeoThe total consumption of the required heat exchange tubes can be obtained;
(6) calculating the heat exchange area according to a formula ③, namely calculating to obtain the actually required heat exchange area, checking the actually required heat exchange area with the initially designed heat exchange area in the step (2), wherein if the actually required heat exchange area is smaller than the initially designed heat exchange area in the step (2), the heat transfer accounting is passed, and if not, returning to the step (2) to redesign the light pipe distribution;
(7) checking the pressure loss of the refrigerant, calculating the pressure loss of the refrigerant in the pipeline according to an equation ⑤, wherein the calculation equation is as follows:
the difference value of the saturation temperature corresponding to the inlet pressure of the liquid supply pipe and the saturation temperature corresponding to the outlet pressure is not more than 3 ℃, the pressure design requirement is met, the pressure loss calculation is passed, and otherwise, the step (2) is returned to redesign the light pipe distribution; and finishing the design of the main body parameters.
Has the advantages that: (1) according to the scheme, the oval light tubes with specific sizes are adopted to form the heat exchange assemblies in a specific array, and a specific flowing heat exchange mode of air and a coolant is matched, so that the defects of the existing cooler are effectively overcome, the blockage is not easy to occur, after long-term operation, dirt is convenient to wash, the compressor can return oil normally, and the operation is stable; the heat exchange effect is good, and the whole structure is compact; the air resistance is small, and the energy consumption of the fan is low; the device is suitable for deep well working roadways of coal mines, gold mines, copper mines and the like with high humidity and high dust; (2) the invention also provides a design method of the novel cooler, which is convenient for determining the passage of the refrigerant, ensures the smooth circulation of the refrigerant in the passage, ensures the normal oil return of the compressor and ensures the normal use of the cooler.
Drawings
FIG. 1 is a schematic view of the overall structure of the product of the present invention;
FIG. 2 is an exploded view of the product of the present invention;
FIG. 3 is a schematic view of the overall construction of the heat exchanger assembly of the present invention;
FIG. 4 is an exploded view of the heat exchanger assembly of the present invention;
FIG. 5 is a schematic view showing the connection relationship between the liquid distributor and the elliptical light pipe;
wherein: 1. the heat exchanger comprises a shell, 11, an air inlet, 12, an air outlet, 2, a heat exchanger assembly, 21, an elliptical light pipe, 22, a liquid supply pipe, 23, a liquid distributor, 24, an upper pipe bundle positioning plate, 25, a lower pipe bundle positioning plate, 26, a connecting elbow, 27, a gas collecting pipe, 28, an exhaust port, 29 and a liquid distributing pipe.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1: an air cooler suitable for a high-humidity high-dust environment comprises a shell 1 and a heat exchanger assembly 2, wherein the shell 1 covers the heat exchanger assembly 2, one end of the shell 1 is provided with an air inlet 11, and the other end of the shell 1 is provided with an air outlet 12; the heat exchanger component 2 comprises a group of vertical oval light pipes 21 arranged in parallel, a group of liquid supply pipes 22 are arranged on two sides of the light pipe array, a liquid distributor 23 is arranged at the tail end of each liquid supply pipe 22, a plurality of liquid distributing pipes are arranged in the liquid distributor 23, and the liquid supply pipes 22 are communicated with the oval light pipes 21 through the liquid distributing pipes 29; the upper end and the lower end of the array of the elliptical light pipes 21 are respectively provided with an upper pipe bundle positioning plate 24 and a lower pipe bundle positioning plate 25; the upper tube bundle positioning plate 24 and the lower tube bundle positioning plate 25 have the same structure and are provided with fixing holes which are distributed in the same way as the elliptical light tubes 21, and two ends of the elliptical light tubes 21 are correspondingly arranged in the fixing holes; the outer sides of the upper tube bundle positioning plate 24 and the lower tube bundle positioning plate 25 are respectively provided with a tube bundle connecting elbow 26 for connecting the adjacent elliptical light tubes 21; the elliptical light tubes 21 are connected with a gas collecting tube 27 in an array manner, the gas collecting tube 27 is provided with a gas exhaust port 28, and the corresponding position on the shell is provided with a liquid supply tube mounting hole and a gas exhaust port mounting hole; the coolant flows inside the elliptical light tunnel 21, the air flows between the elliptical light tunnel 21 and the housing 1, and the coolant flow direction and the air flow direction are perpendicular to each other.
The design method of the air cooler in the high-humidity high-dust environment comprises the following specific steps:
(1) determining the heat exchange quantity of the heat exchanger according to the air inlet and outlet states and the air flow;
(2) determining that tube bundles are arranged in a vertical order to form a light tube array, obtaining an initial design heat exchange area, and designing the size of an elliptical light tube, wherein the design formula is as follows:
π·do＝2·π·b+4(a-b) ①
in formulae ① and ②, doFor the selected tube outside diameter, a and b are the semimajor and semiminor axis lengths of the elliptical cross-section, respectively, v is the refrigerant vapor flow rate in the evaporator tubemThe mass flow rate of the refrigerant in the evaporator pipeline, the density of rho refrigerant steam and delta, the wall thickness of the pipe;
(3) according to the arrangement of the light pipes and the air state parameters, checking a corresponding heat exchange coefficient calculation formula, and calculating and determining the heat exchange coefficient of the air side;
(4) checking a corresponding heat exchange coefficient calculation formula according to the arrangement of the light pipes and the state parameters of the refrigerant, and calculating and determining the heat exchange coefficient of the air side;
(5) determining the total heat transfer coefficient, and calculating according to the following formula:
in formula ③④, FoRepresents the effective heat exchange area of the heat exchange pipeline, Q represents the designed heat exchange quantity of the heat exchanger, KoDenotes the total heat transfer coefficient of the heat exchange tube, diAnd doRespectively the inner and outer diameters of the pipe, aiIs the heat exchange coefficient of the inner surface of the pipe with the refrigerant, aoIs a pipeThe heat exchange coefficient between the outer surface and the air, and lambda is the heat conductivity coefficient of the pipe wall material. According to the effective area F of heat exchangeoAnd the outer diameter d of the pipeoThe total consumption of the required heat exchange tubes can be obtained;
(6) calculating the heat exchange area according to a formula ③, namely calculating to obtain the actually required heat exchange area, checking the actually required heat exchange area with the initially designed heat exchange area in the step (2), wherein if the actually required heat exchange area is smaller than the initially designed heat exchange area in the step (2), the heat transfer accounting is passed, and if not, returning to the step (2) to redesign the light pipe distribution;
(7) checking the pressure loss of the refrigerant, calculating the pressure loss of the refrigerant in the pipeline according to an equation ⑤, wherein the calculation equation is as follows:
the difference value of the saturation temperature corresponding to the inlet pressure of the liquid supply pipe and the saturation temperature corresponding to the outlet pressure is not more than 3 ℃, the pressure design requirement is met, the pressure loss calculation is passed, and otherwise, the step (2) is returned to redesign the light pipe distribution; and finishing the design of the main body parameters.
In this embodiment, to the colliery operational environment design air cooler, the design requirement is: the air inlet temperature is 30 ℃, the air inlet humidity is 70%, the air outlet temperature is 19.3 ℃, the air outlet humidity is 95%, and the air quantity is 27000m3H, refrigerant R407C, refrigerant flow rate of 5400kg/hour, refrigerant evaporation temperature of 11.3 ℃, and the requirement of the external dimension of the heat exchanger: the width of the windward side is 950mm, the height of the windward side is 800mm, and the length along the airflow direction is less than 2500 mm; the specific design process is as follows:
(1) determining the heat exchange amount: according to the air inlet and outlet states and the air flow, the heat exchange capacity of the obtained heat exchanger is 193 kW;
(2) determining the tube bundle form: the outer diameter of the copper pipe for the primarily selected heat exchanger is 12.7mm, and the wall thickness is 0.8 mm; the tube bundles are arranged in parallel, the tube spacing in the airflow direction is 30mm, the tube spacing in the vertical airflow direction is 25mm, the number of each tube row in the vertical airflow direction is 36 according to the width of the heat exchanger being 950mm, the number of tube rows in the airflow direction is 69, the number of refrigerant passages is 72, and the heat exchange tube bundles are taken according to the height of the heat exchanger being 800mmThe height of each straight pipe is 700mm, the overall dimension of the heat exchange tube bundle main body is 875mm-700mm-2040mm, and the overall appearance of the heat exchanger is expected to meet the overall dimension requirement of the heat exchanger; the effective heat exchange area of the straight pipe section of the whole heat exchanger is 69m2；
(3) The cross section size of the elliptical light pipe is determined, the elliptical light pipe is compressed to an elliptical pipe with the height of 8.6mm, the air flow speed in the elliptical light pipe is 10.3m/s according to formulas ① and ②, the air flow speed of refrigerant is between 10 and 15m/s, and the oil return requirement of a compressor is met;
(4) determining the air side heat exchange coefficient: checking a corresponding heat exchange coefficient calculation formula according to the tube bundle arrangement and the air state parameters; the air side heat transfer coefficient calculation result is 358W/(m)2-K)；
(5) Determining the heat exchange coefficient of the refrigerant side: checking a corresponding heat exchange coefficient calculation formula according to the arrangement of the tube bundle and the state parameters of the refrigerant, wherein the calculation result of the heat exchange coefficient at the refrigerant side is 915W/(m)2-K)；
(6) Determining the total heat transfer coefficient, wherein the total heat transfer coefficient is calculated to be 247W/(m) according to formula ④2-K)；
(7) Checking the heat exchange area according to the formula ③, calculating to obtain the actually required heat exchange area of 62m2(ii) a The actual heat exchange area required is smaller than the initial design effective heat exchange area determined in the step (2), the heat transfer accounting is passed, or the step (2) is returned to, and the design of the tube bundle arrangement is restarted;
(8) checking the pressure loss of the refrigerant, namely calculating to obtain the pressure loss of the refrigerant in the pipeline as 55kPa according to a formula ⑤, wherein the pressure loss can obtain that the evaporation temperature corresponding to the outlet pressure of the evaporator is 8.92 ℃, the difference value between the evaporation temperature corresponding to the inlet pressure of the evaporator and the evaporation temperature corresponding to the outlet pressure is 2.38 ℃, the pressure loss value of the refrigerant is equivalent to the reduction of the evaporation temperature not more than 3 ℃, the pressure design requirement is met, the pressure loss is checked to be passed, and otherwise, returning to the step (2) to restart the design of the tube bundle arrangement;
(9) and finishing the design of the main body parameters.
In this embodiment, each liquid separator corresponds to 36 refrigeration passages, the outlet of each liquid separating hole of the liquid separator is connected with a corresponding elliptical light tube through a liquid separating pipe 29, the refrigerant absorbs heat and turns into gas after flowing through the elliptical light tube passages, and the gas in 72 refrigerant passages is converged in the gas collecting pipe and discharged from the exhaust pipe 1.
The novel air cooler designed by the scheme of the invention is suitable for deep well working roadways of high-humidity and high-dust coal mines, gold mines, copper mines and the like, effectively overcomes the defects of the existing cooler, is not easy to block, is convenient to wash dirt after long-term operation, can normally return oil for the compressor, and is stable in operation; the heat exchange effect is good, and the whole structure is compact; the air resistance is small, and the energy consumption of the fan is low.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. An air cooler suitable for high humidity high dust environment which characterized in that: the heat exchanger comprises a shell and a heat exchanger assembly, wherein the shell is covered on the heat exchanger assembly, one end of the shell is provided with an air inlet, and the other end of the shell is provided with an air outlet; the heat exchanger component comprises a group of vertical oval light tube arrays arranged in parallel, a group of liquid supply pipes are arranged on two sides of each light tube array, a liquid distributor is arranged at the tail end of each liquid supply pipe, a plurality of liquid distribution pipes are arranged in each liquid distributor, and each liquid supply pipe is communicated with each oval light tube through each liquid distribution pipe; the upper end and the lower end of the elliptical light pipe array are respectively provided with an upper pipe bundle positioning plate and a lower pipe bundle positioning plate; the upper pipe bundle positioning plate and the lower pipe bundle positioning plate are consistent in structure and are provided with fixing holes which are consistent with the distribution of the elliptical light pipes, and two ends of the elliptical light pipes are correspondingly arranged in the fixing holes; the outer sides of the upper tube bundle positioning plate and the lower tube bundle positioning plate are respectively provided with a tube bundle connecting elbow for connecting adjacent elliptical light tubes; the elliptical light tube array is connected with a gas collecting tube, an exhaust port is arranged on the gas collecting tube, and a liquid supply tube mounting hole and an exhaust port mounting hole are arranged at corresponding positions on the shell; the coolant flows in the oval light tube, the air flows between the oval light tube and the shell, and the flow direction of the coolant is perpendicular to the flow direction of the air.
2. The air cooler suitable for use in high humidity high dust environment of claim 1, wherein: the specific size relationship of the elliptical light tube is as follows:
π·do＝2·π·b+4(a-b) ①
in formulae ① and ②, doFor the selected tube outside diameter, a and b are the semimajor and semiminor axis lengths of the elliptical cross-section, respectively, v is the refrigerant vapor flow rate in the evaporator tubemThe mass flow rate of the refrigerant in the evaporator tube, ρ density of the refrigerant vapor, and δ the tube wall thickness.
3. The air cooler suitable for use in high humidity high dust environment of claim 2, wherein: the liquid supply speed in the liquid supply pipe is 10-15 m/s.
4. The air cooler suitable for use in high humidity high dust environment of claim 3, wherein: the difference between the saturation temperature corresponding to the inlet pressure of the liquid supply pipe and the saturation temperature corresponding to the outlet pressure of the liquid supply pipe is not more than 3 ℃.
5. A method for designing an air cooler suitable for high humidity and high dust environment according to claim 1, comprising the steps of:
(1) determining the heat exchange quantity of the heat exchanger according to the air inlet and outlet states and the air flow;
(2) determining that tube bundles are arranged in a vertical order to form a light tube array, obtaining an initial design heat exchange area, and designing the size of an elliptical light tube, wherein the design formula is as follows:
π·do＝2·π·b+4(a-b) ①
in formulae ① and ②, doFor the selected tube outside diameter, a and b are the semimajor and semiminor axis lengths of the elliptical cross-section, respectively, v is the refrigerant vapor flow rate in the evaporator tubemThe mass flow rate of the refrigerant in the evaporator pipeline, the density of rho refrigerant steam and delta, the wall thickness of the pipe;
(3) according to the arrangement of the light pipes and the air state parameters, checking a corresponding heat exchange coefficient calculation formula, and calculating and determining the heat exchange coefficient of the air side;
(4) checking a corresponding heat exchange coefficient calculation formula according to the arrangement of the light pipes and the state parameters of the refrigerant, and calculating and determining the heat exchange coefficient of the air side;
(5) determining the total heat transfer coefficient, and calculating according to the following formula:
in formula ③④, FoRepresents the effective heat exchange area of the heat exchange pipeline, Q represents the designed heat exchange quantity of the heat exchanger, KoDenotes the total heat transfer coefficient of the heat exchange tube, diAnd doRespectively the inner and outer diameters of the pipe, aiIs the heat exchange coefficient of the inner surface of the pipe with the refrigerant, aoIs the heat exchange coefficient between the outer surface of the pipeline and the air, and lambda is the heat conductivity coefficient of the material of the pipe wall. According to the effective area F of heat exchangeoAnd the outer diameter d of the pipeoThe total consumption of the required heat exchange tubes can be obtained;
(6) calculating the heat exchange area according to a formula ③, namely calculating to obtain the actually required heat exchange area, checking the actually required heat exchange area with the initially designed heat exchange area in the step (2), wherein if the actually required heat exchange area is smaller than the initially designed heat exchange area in the step (2), the heat transfer accounting is passed, and if not, returning to the step (2) to redesign the light pipe distribution;
(7) checking the pressure loss of the refrigerant, calculating the pressure loss of the refrigerant in the pipeline according to an equation ⑤, wherein the calculation equation is as follows:
the difference value of the saturation temperature corresponding to the inlet pressure of the liquid supply pipe and the saturation temperature corresponding to the outlet pressure is not more than 3 ℃, the pressure design requirement is met, the pressure loss calculation is passed, and otherwise, the step (2) is returned to redesign the light pipe distribution; and finishing the design of the main body parameters.
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| CN201811273444.7A CN111119973B (en) | 2018-10-30 | 2018-10-30 | Air cooler suitable for high-humidity high-dust environment and design method thereof |
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| CN201811273444.7A CN111119973B (en) | 2018-10-30 | 2018-10-30 | Air cooler suitable for high-humidity high-dust environment and design method thereof |
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| CN111119973B CN111119973B (en) | 2022-03-18 |
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Citations (3)
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|---|---|---|---|---|
| JP2000205783A (en) * | 1999-01-19 | 2000-07-28 | Calsonic Kansei Corp | Heat exchanger flat tube |
| CN101988777A (en) * | 2009-08-07 | 2011-03-23 | 珠海格力电器股份有限公司 | Micro-channel tubular heat exchanger for dehumidification and dehumidifier |
| CN105066293A (en) * | 2015-07-28 | 2015-11-18 | 珠海格力电器股份有限公司 | Heat exchange part, radiation heat exchange plate assembly and manufacturing method |
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2018
- 2018-10-30 CN CN201811273444.7A patent/CN111119973B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000205783A (en) * | 1999-01-19 | 2000-07-28 | Calsonic Kansei Corp | Heat exchanger flat tube |
| CN101988777A (en) * | 2009-08-07 | 2011-03-23 | 珠海格力电器股份有限公司 | Micro-channel tubular heat exchanger for dehumidification and dehumidifier |
| CN105066293A (en) * | 2015-07-28 | 2015-11-18 | 珠海格力电器股份有限公司 | Heat exchange part, radiation heat exchange plate assembly and manufacturing method |
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| Title |
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| 刘纪福: "《翅片管换热器的原理与设计》", 30 April 2013, 哈尔滨工业大学出版社 * |
| 赵丹: "《矿井降温与空气调节》", 31 March 2018, 煤炭工业出版社 * |
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